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提交 0d66cba1 编写于 作者: L Linus Torvalds
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Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (29 commits)
  [S390] cpu hotplug: fix external interrupt subclass mask handling
  [S390] oprofile: dont access lowcore
  [S390] oprofile: add missing irq stats counter
  [S390] Ignore sendmmsg system call note wired up warning
  [S390] s390,oprofile: fix compile error for !CONFIG_SMP
  [S390] s390,oprofile: fix alert counter increment
  [S390] Remove unused includes in process.c
  [S390] get CPC image name
  [S390] sclp: event buffer dissection
  [S390] chsc: process channel-path-availability information
  [S390] refactor page table functions for better pgste support
  [S390] merge page_test_dirty and page_clear_dirty
  [S390] qdio: prevent compile warning
  [S390] sclp: remove unnecessary sendmask check
  [S390] convert old cpumask API into new one
  [S390] pfault: cleanup code
  [S390] pfault: cpu hotplug vs missing completion interrupts
  [S390] smp: add __noreturn attribute to cpu_die()
  [S390] percpu: implement arch specific irqsafe_cpu_ops
  [S390] vdso: disable gcov profiling
  ...
上级 4637f40f 5bd41878
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Showing with 895 addition and 1284 deletion
arch/s390/Kconfig
浏览文件 @ 0d66cba1
......@@ -230,17 +230,6 @@ config SYSVIPC_COMPAT
config AUDIT_ARCH
def_bool y
config S390_EXEC_PROTECT
def_bool y
prompt "Data execute protection"
help
This option allows to enable a buffer overflow protection for user
space programs and it also selects the addressing mode option above.
The kernel parameter noexec=on will enable this feature and also
switch the addressing modes, default is disabled. Enabling this (via
kernel parameter) on machines earlier than IBM System z9 this will
reduce system performance.
comment "Code generation options"
choice
......
arch/s390/appldata/appldata_base.c
浏览文件 @ 0d66cba1
......@@ -130,9 +130,7 @@ static void appldata_work_fn(struct work_struct *work)
{
struct list_head *lh;
struct appldata_ops *ops;
int i;
i = 0;
get_online_cpus();
mutex_lock(&appldata_ops_mutex);
list_for_each(lh, &appldata_ops_list) {
......
arch/s390/include/asm/cmpxchg.h
浏览文件 @ 0d66cba1
......@@ -167,7 +167,6 @@ static inline unsigned long __cmpxchg(void *ptr, unsigned long old,
#ifdef CONFIG_64BIT
#define cmpxchg64(ptr, o, n) \
({ \
BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
cmpxchg((ptr), (o), (n)); \
})
#else /* CONFIG_64BIT */
......
arch/s390/include/asm/elf.h
浏览文件 @ 0d66cba1
......@@ -196,18 +196,6 @@ do { \
} while (0)
#endif /* __s390x__ */
/*
* An executable for which elf_read_implies_exec() returns TRUE will
* have the READ_IMPLIES_EXEC personality flag set automatically.
*/
#define elf_read_implies_exec(ex, executable_stack) \
({ \
if (current->mm->context.noexec && \
executable_stack != EXSTACK_DISABLE_X) \
disable_noexec(current->mm, current); \
current->mm->context.noexec == 0; \
})
#define STACK_RND_MASK 0x7ffUL
#define ARCH_DLINFO \
......
arch/s390/include/asm/hugetlb.h
浏览文件 @ 0d66cba1
......@@ -111,21 +111,10 @@ static inline void huge_ptep_invalidate(struct mm_struct *mm,
{
pmd_t *pmdp = (pmd_t *) ptep;
if (!MACHINE_HAS_IDTE) {
__pmd_csp(pmdp);
if (mm->context.noexec) {
pmdp = get_shadow_table(pmdp);
__pmd_csp(pmdp);
}
return;
}
__pmd_idte(address, pmdp);
if (mm->context.noexec) {
pmdp = get_shadow_table(pmdp);
if (MACHINE_HAS_IDTE)
__pmd_idte(address, pmdp);
}
return;
else
__pmd_csp(pmdp);
}
#define huge_ptep_set_access_flags(__vma, __addr, __ptep, __entry, __dirty) \
......
arch/s390/include/asm/irq.h
浏览文件 @ 0d66cba1
......@@ -15,6 +15,7 @@ enum interruption_class {
EXTINT_VRT,
EXTINT_SCP,
EXTINT_IUC,
EXTINT_CPM,
IOINT_QAI,
IOINT_QDI,
IOINT_DAS,
......
arch/s390/include/asm/lowcore.h
浏览文件 @ 0d66cba1
......@@ -124,7 +124,7 @@ struct _lowcore {
/* Address space pointer. */
__u32 kernel_asce; /* 0x02ac */
__u32 user_asce; /* 0x02b0 */
__u32 user_exec_asce; /* 0x02b4 */
__u32 current_pid; /* 0x02b4 */
/* SMP info area */
__u32 cpu_nr; /* 0x02b8 */
......@@ -255,7 +255,7 @@ struct _lowcore {
/* Address space pointer. */
__u64 kernel_asce; /* 0x0310 */
__u64 user_asce; /* 0x0318 */
__u64 user_exec_asce; /* 0x0320 */
__u64 current_pid; /* 0x0320 */
/* SMP info area */
__u32 cpu_nr; /* 0x0328 */
......
arch/s390/include/asm/mmu.h
浏览文件 @ 0d66cba1
......@@ -5,19 +5,18 @@ typedef struct {
atomic_t attach_count;
unsigned int flush_mm;
spinlock_t list_lock;
struct list_head crst_list;
struct list_head pgtable_list;
unsigned long asce_bits;
unsigned long asce_limit;
unsigned long vdso_base;
int noexec;
int has_pgste; /* The mmu context has extended page tables */
int alloc_pgste; /* cloned contexts will have extended page tables */
/* Cloned contexts will be created with extended page tables. */
unsigned int alloc_pgste:1;
/* The mmu context has extended page tables. */
unsigned int has_pgste:1;
} mm_context_t;
#define INIT_MM_CONTEXT(name) \
.context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \
.context.crst_list = LIST_HEAD_INIT(name.context.crst_list), \
.context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list),
#endif
arch/s390/include/asm/mmu_context.h
浏览文件 @ 0d66cba1
......@@ -35,11 +35,9 @@ static inline int init_new_context(struct task_struct *tsk,
* and if has_pgste is set, it will create extended page
* tables.
*/
mm->context.noexec = 0;
mm->context.has_pgste = 1;
mm->context.alloc_pgste = 1;
} else {
mm->context.noexec = (user_mode == SECONDARY_SPACE_MODE);
mm->context.has_pgste = 0;
mm->context.alloc_pgste = 0;
}
......@@ -63,10 +61,8 @@ static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk)
S390_lowcore.user_asce = mm->context.asce_bits | __pa(pgd);
if (user_mode != HOME_SPACE_MODE) {
/* Load primary space page table origin. */
pgd = mm->context.noexec ? get_shadow_table(pgd) : pgd;
S390_lowcore.user_exec_asce = mm->context.asce_bits | __pa(pgd);
asm volatile(LCTL_OPCODE" 1,1,%0\n"
: : "m" (S390_lowcore.user_exec_asce) );
: : "m" (S390_lowcore.user_asce) );
} else
/* Load home space page table origin. */
asm volatile(LCTL_OPCODE" 13,13,%0"
......
arch/s390/include/asm/page.h
浏览文件 @ 0d66cba1
......@@ -90,6 +90,7 @@ static inline void copy_page(void *to, void *from)
*/
typedef struct { unsigned long pgprot; } pgprot_t;
typedef struct { unsigned long pgste; } pgste_t;
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pmd; } pmd_t;
typedef struct { unsigned long pud; } pud_t;
......@@ -97,18 +98,21 @@ typedef struct { unsigned long pgd; } pgd_t;
typedef pte_t *pgtable_t;
#define pgprot_val(x) ((x).pgprot)
#define pgste_val(x) ((x).pgste)
#define pte_val(x) ((x).pte)
#define pmd_val(x) ((x).pmd)
#define pud_val(x) ((x).pud)
#define pgd_val(x) ((x).pgd)
#define __pgste(x) ((pgste_t) { (x) } )
#define __pte(x) ((pte_t) { (x) } )
#define __pmd(x) ((pmd_t) { (x) } )
#define __pud(x) ((pud_t) { (x) } )
#define __pgd(x) ((pgd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )
static inline void
page_set_storage_key(unsigned long addr, unsigned int skey, int mapped)
static inline void page_set_storage_key(unsigned long addr,
unsigned char skey, int mapped)
{
if (!mapped)
asm volatile(".insn rrf,0xb22b0000,%0,%1,8,0"
......@@ -117,15 +121,59 @@ page_set_storage_key(unsigned long addr, unsigned int skey, int mapped)
asm volatile("sske %0,%1" : : "d" (skey), "a" (addr));
}
static inline unsigned int
page_get_storage_key(unsigned long addr)
static inline unsigned char page_get_storage_key(unsigned long addr)
{
unsigned int skey;
unsigned char skey;
asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr), "0" (0));
asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr));
return skey;
}
static inline int page_reset_referenced(unsigned long addr)
{
unsigned int ipm;
asm volatile(
" rrbe 0,%1\n"
" ipm %0\n"
: "=d" (ipm) : "a" (addr) : "cc");
return !!(ipm & 0x20000000);
}
/* Bits int the storage key */
#define _PAGE_CHANGED 0x02 /* HW changed bit */
#define _PAGE_REFERENCED 0x04 /* HW referenced bit */
#define _PAGE_FP_BIT 0x08 /* HW fetch protection bit */
#define _PAGE_ACC_BITS 0xf0 /* HW access control bits */
/*
* Test and clear dirty bit in storage key.
* We can't clear the changed bit atomically. This is a potential
* race against modification of the referenced bit. This function
* should therefore only be called if it is not mapped in any
* address space.
*/
#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY
static inline int page_test_and_clear_dirty(unsigned long pfn, int mapped)
{
unsigned char skey;
skey = page_get_storage_key(pfn << PAGE_SHIFT);
if (!(skey & _PAGE_CHANGED))
return 0;
page_set_storage_key(pfn << PAGE_SHIFT, skey & ~_PAGE_CHANGED, mapped);
return 1;
}
/*
* Test and clear referenced bit in storage key.
*/
#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG
static inline int page_test_and_clear_young(unsigned long pfn)
{
return page_reset_referenced(pfn << PAGE_SHIFT);
}
struct page;
void arch_free_page(struct page *page, int order);
void arch_alloc_page(struct page *page, int order);
......
arch/s390/include/asm/percpu.h
浏览文件 @ 0d66cba1
#ifndef __ARCH_S390_PERCPU__
#define __ARCH_S390_PERCPU__
#include <linux/preempt.h>
#include <asm/cmpxchg.h>
/*
* s390 uses its own implementation for per cpu data, the offset of
* the cpu local data area is cached in the cpu's lowcore memory.
......@@ -16,6 +19,71 @@
#define ARCH_NEEDS_WEAK_PER_CPU
#endif
#define arch_irqsafe_cpu_to_op(pcp, val, op) \
do { \
typedef typeof(pcp) pcp_op_T__; \
pcp_op_T__ old__, new__, prev__; \
pcp_op_T__ *ptr__; \
preempt_disable(); \
ptr__ = __this_cpu_ptr(&(pcp)); \
prev__ = *ptr__; \
do { \
old__ = prev__; \
new__ = old__ op (val); \
switch (sizeof(*ptr__)) { \
case 8: \
prev__ = cmpxchg64(ptr__, old__, new__); \
break; \
default: \
prev__ = cmpxchg(ptr__, old__, new__); \
} \
} while (prev__ != old__); \
preempt_enable(); \
} while (0)
#define irqsafe_cpu_add_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
#define irqsafe_cpu_add_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
#define irqsafe_cpu_add_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
#define irqsafe_cpu_add_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
#define irqsafe_cpu_and_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
#define irqsafe_cpu_and_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
#define irqsafe_cpu_and_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
#define irqsafe_cpu_and_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
#define irqsafe_cpu_or_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
#define irqsafe_cpu_or_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
#define irqsafe_cpu_or_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
#define irqsafe_cpu_or_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
#define irqsafe_cpu_xor_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
#define irqsafe_cpu_xor_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
#define irqsafe_cpu_xor_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
#define irqsafe_cpu_xor_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
#define arch_irqsafe_cpu_cmpxchg(pcp, oval, nval) \
({ \
typedef typeof(pcp) pcp_op_T__; \
pcp_op_T__ ret__; \
pcp_op_T__ *ptr__; \
preempt_disable(); \
ptr__ = __this_cpu_ptr(&(pcp)); \
switch (sizeof(*ptr__)) { \
case 8: \
ret__ = cmpxchg64(ptr__, oval, nval); \
break; \
default: \
ret__ = cmpxchg(ptr__, oval, nval); \
} \
preempt_enable(); \
ret__; \
})
#define irqsafe_cpu_cmpxchg_1(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
#define irqsafe_cpu_cmpxchg_2(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
#define irqsafe_cpu_cmpxchg_4(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
#define irqsafe_cpu_cmpxchg_8(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
#include <asm-generic/percpu.h>
#endif /* __ARCH_S390_PERCPU__ */
arch/s390/include/asm/pgalloc.h
浏览文件 @ 0d66cba1
......@@ -19,14 +19,13 @@
#define check_pgt_cache() do {} while (0)
unsigned long *crst_table_alloc(struct mm_struct *, int);
unsigned long *crst_table_alloc(struct mm_struct *);
void crst_table_free(struct mm_struct *, unsigned long *);
void crst_table_free_rcu(struct mm_struct *, unsigned long *);
unsigned long *page_table_alloc(struct mm_struct *);
void page_table_free(struct mm_struct *, unsigned long *);
void page_table_free_rcu(struct mm_struct *, unsigned long *);
void disable_noexec(struct mm_struct *, struct task_struct *);
static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
{
......@@ -50,9 +49,6 @@ static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
static inline void crst_table_init(unsigned long *crst, unsigned long entry)
{
clear_table(crst, entry, sizeof(unsigned long)*2048);
crst = get_shadow_table(crst);
if (crst)
clear_table(crst, entry, sizeof(unsigned long)*2048);
}
#ifndef __s390x__
......@@ -69,10 +65,7 @@ static inline unsigned long pgd_entry_type(struct mm_struct *mm)
#define pmd_free(mm, x) do { } while (0)
#define pgd_populate(mm, pgd, pud) BUG()
#define pgd_populate_kernel(mm, pgd, pud) BUG()
#define pud_populate(mm, pud, pmd) BUG()
#define pud_populate_kernel(mm, pud, pmd) BUG()
#else /* __s390x__ */
......@@ -90,7 +83,7 @@ void crst_table_downgrade(struct mm_struct *, unsigned long limit);
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
{
unsigned long *table = crst_table_alloc(mm, mm->context.noexec);
unsigned long *table = crst_table_alloc(mm);
if (table)
crst_table_init(table, _REGION3_ENTRY_EMPTY);
return (pud_t *) table;
......@@ -99,43 +92,21 @@ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
{
unsigned long *table = crst_table_alloc(mm, mm->context.noexec);
unsigned long *table = crst_table_alloc(mm);
if (table)
crst_table_init(table, _SEGMENT_ENTRY_EMPTY);
return (pmd_t *) table;
}
#define pmd_free(mm, pmd) crst_table_free(mm, (unsigned long *) pmd)
static inline void pgd_populate_kernel(struct mm_struct *mm,
pgd_t *pgd, pud_t *pud)
{
pgd_val(*pgd) = _REGION2_ENTRY | __pa(pud);
}
static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
{
pgd_populate_kernel(mm, pgd, pud);
if (mm->context.noexec) {
pgd = get_shadow_table(pgd);
pud = get_shadow_table(pud);
pgd_populate_kernel(mm, pgd, pud);
}
}
static inline void pud_populate_kernel(struct mm_struct *mm,
pud_t *pud, pmd_t *pmd)
{
pud_val(*pud) = _REGION3_ENTRY | __pa(pmd);
pgd_val(*pgd) = _REGION2_ENTRY | __pa(pud);
}
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{
pud_populate_kernel(mm, pud, pmd);
if (mm->context.noexec) {
pud = get_shadow_table(pud);
pmd = get_shadow_table(pmd);
pud_populate_kernel(mm, pud, pmd);
}
pud_val(*pud) = _REGION3_ENTRY | __pa(pmd);
}
#endif /* __s390x__ */
......@@ -143,29 +114,19 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
spin_lock_init(&mm->context.list_lock);
INIT_LIST_HEAD(&mm->context.crst_list);
INIT_LIST_HEAD(&mm->context.pgtable_list);
return (pgd_t *)
crst_table_alloc(mm, user_mode == SECONDARY_SPACE_MODE);
return (pgd_t *) crst_table_alloc(mm);
}
#define pgd_free(mm, pgd) crst_table_free(mm, (unsigned long *) pgd)
static inline void pmd_populate_kernel(struct mm_struct *mm,
pmd_t *pmd, pte_t *pte)
{
pmd_val(*pmd) = _SEGMENT_ENTRY + __pa(pte);
}
static inline void pmd_populate(struct mm_struct *mm,
pmd_t *pmd, pgtable_t pte)
{
pmd_populate_kernel(mm, pmd, pte);
if (mm->context.noexec) {
pmd = get_shadow_table(pmd);
pmd_populate_kernel(mm, pmd, pte + PTRS_PER_PTE);
}
pmd_val(*pmd) = _SEGMENT_ENTRY + __pa(pte);
}
#define pmd_populate_kernel(mm, pmd, pte) pmd_populate(mm, pmd, pte)
#define pmd_pgtable(pmd) \
(pgtable_t)(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE)
......
arch/s390/include/asm/pgtable.h
浏览文件 @ 0d66cba1
此差异已折叠。
arch/s390/include/asm/processor.h
浏览文件 @ 0d66cba1
......@@ -84,6 +84,7 @@ struct thread_struct {
struct per_event per_event; /* Cause of the last PER trap */
/* pfault_wait is used to block the process on a pfault event */
unsigned long pfault_wait;
struct list_head list;
};
typedef struct thread_struct thread_struct;
......
arch/s390/include/asm/tlbflush.h
浏览文件 @ 0d66cba1
......@@ -50,7 +50,7 @@ static inline void __tlb_flush_full(struct mm_struct *mm)
/*
* If the process only ran on the local cpu, do a local flush.
*/
local_cpumask = cpumask_of_cpu(smp_processor_id());
cpumask_copy(&local_cpumask, cpumask_of(smp_processor_id()));
if (cpumask_equal(mm_cpumask(mm), &local_cpumask))
__tlb_flush_local();
else
......@@ -80,16 +80,11 @@ static inline void __tlb_flush_mm(struct mm_struct * mm)
* on all cpus instead of doing a local flush if the mm
* only ran on the local cpu.
*/
if (MACHINE_HAS_IDTE) {
if (mm->context.noexec)
__tlb_flush_idte((unsigned long)
get_shadow_table(mm->pgd) |
mm->context.asce_bits);
if (MACHINE_HAS_IDTE)
__tlb_flush_idte((unsigned long) mm->pgd |
mm->context.asce_bits);
return;
}
__tlb_flush_full(mm);
else
__tlb_flush_full(mm);
}
static inline void __tlb_flush_mm_cond(struct mm_struct * mm)
......
arch/s390/include/asm/unistd.h
浏览文件 @ 0d66cba1
......@@ -385,6 +385,7 @@
/* Ignore system calls that are also reachable via sys_socket */
#define __IGNORE_recvmmsg
#define __IGNORE_sendmmsg
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
......
arch/s390/kernel/asm-offsets.c
浏览文件 @ 0d66cba1
......@@ -124,13 +124,11 @@ int main(void)
DEFINE(__LC_LAST_UPDATE_TIMER, offsetof(struct _lowcore, last_update_timer));
DEFINE(__LC_LAST_UPDATE_CLOCK, offsetof(struct _lowcore, last_update_clock));
DEFINE(__LC_CURRENT, offsetof(struct _lowcore, current_task));
DEFINE(__LC_CURRENT_PID, offsetof(struct _lowcore, current_pid));
DEFINE(__LC_THREAD_INFO, offsetof(struct _lowcore, thread_info));
DEFINE(__LC_KERNEL_STACK, offsetof(struct _lowcore, kernel_stack));
DEFINE(__LC_ASYNC_STACK, offsetof(struct _lowcore, async_stack));
DEFINE(__LC_PANIC_STACK, offsetof(struct _lowcore, panic_stack));
DEFINE(__LC_KERNEL_ASCE, offsetof(struct _lowcore, kernel_asce));
DEFINE(__LC_USER_ASCE, offsetof(struct _lowcore, user_asce));
DEFINE(__LC_USER_EXEC_ASCE, offsetof(struct _lowcore, user_exec_asce));
DEFINE(__LC_INT_CLOCK, offsetof(struct _lowcore, int_clock));
DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock));
DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags));
......
arch/s390/kernel/entry.S
浏览文件 @ 0d66cba1
......@@ -212,6 +212,7 @@ __switch_to:
lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
lm %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
st %r3,__LC_CURRENT # store task struct of next
mvc __LC_CURRENT_PID(4,%r0),__TASK_pid(%r3) # store pid of next
st %r5,__LC_THREAD_INFO # store thread info of next
ahi %r5,STACK_SIZE # end of kernel stack of next
st %r5,__LC_KERNEL_STACK # store end of kernel stack
......
arch/s390/kernel/entry64.S
浏览文件 @ 0d66cba1
......@@ -220,6 +220,7 @@ __switch_to:
lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
stg %r3,__LC_CURRENT # store task struct of next
mvc __LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next
stg %r5,__LC_THREAD_INFO # store thread info of next
aghi %r5,STACK_SIZE # end of kernel stack of next
stg %r5,__LC_KERNEL_STACK # store end of kernel stack
......
arch/s390/kernel/irq.c
浏览文件 @ 0d66cba1
......@@ -32,6 +32,7 @@ static const struct irq_class intrclass_names[] = {
{.name = "VRT", .desc = "[EXT] Virtio" },
{.name = "SCP", .desc = "[EXT] Service Call" },
{.name = "IUC", .desc = "[EXT] IUCV" },
{.name = "CPM", .desc = "[EXT] CPU Measurement" },
{.name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt" },
{.name = "QDI", .desc = "[I/O] QDIO Interrupt" },
{.name = "DAS", .desc = "[I/O] DASD" },
......
arch/s390/kernel/process.c
浏览文件 @ 0d66cba1
......@@ -9,41 +9,26 @@
#include <linux/compiler.h>
#include <linux/cpu.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/stddef.h>
#include <linux/slab.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/vmalloc.h>
#include <linux/user.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/tick.h>
#include <linux/elfcore.h>
#include <linux/kernel_stat.h>
#include <linux/personality.h>
#include <linux/syscalls.h>
#include <linux/compat.h>
#include <linux/kprobes.h>
#include <linux/random.h>
#include <asm/compat.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <linux/module.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/irq.h>
#include <asm/timer.h>
#include <asm/nmi.h>
#include <asm/compat.h>
#include <asm/smp.h>
#include "entry.h"
......
arch/s390/kernel/setup.c
浏览文件 @ 0d66cba1
......@@ -305,8 +305,7 @@ static int set_amode_and_uaccess(unsigned long user_amode,
*/
static int __init early_parse_switch_amode(char *p)
{
if (user_mode != SECONDARY_SPACE_MODE)
user_mode = PRIMARY_SPACE_MODE;
user_mode = PRIMARY_SPACE_MODE;
return 0;
}
early_param("switch_amode", early_parse_switch_amode);
......@@ -315,10 +314,6 @@ static int __init early_parse_user_mode(char *p)
{
if (p && strcmp(p, "primary") == 0)
user_mode = PRIMARY_SPACE_MODE;
#ifdef CONFIG_S390_EXEC_PROTECT
else if (p && strcmp(p, "secondary") == 0)
user_mode = SECONDARY_SPACE_MODE;
#endif
else if (!p || strcmp(p, "home") == 0)
user_mode = HOME_SPACE_MODE;
else
......@@ -327,31 +322,9 @@ static int __init early_parse_user_mode(char *p)
}
early_param("user_mode", early_parse_user_mode);
#ifdef CONFIG_S390_EXEC_PROTECT
/*
* Enable execute protection?
*/
static int __init early_parse_noexec(char *p)
{
if (!strncmp(p, "off", 3))
return 0;
user_mode = SECONDARY_SPACE_MODE;
return 0;
}
early_param("noexec", early_parse_noexec);
#endif /* CONFIG_S390_EXEC_PROTECT */
static void setup_addressing_mode(void)
{
if (user_mode == SECONDARY_SPACE_MODE) {
if (set_amode_and_uaccess(PSW_ASC_SECONDARY,
PSW32_ASC_SECONDARY))
pr_info("Execute protection active, "
"mvcos available\n");
else
pr_info("Execute protection active, "
"mvcos not available\n");
} else if (user_mode == PRIMARY_SPACE_MODE) {
if (user_mode == PRIMARY_SPACE_MODE) {
if (set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY))
pr_info("Address spaces switched, "
"mvcos available\n");
......
arch/s390/kernel/smp.c
浏览文件 @ 0d66cba1
......@@ -335,7 +335,7 @@ static int smp_rescan_cpus_sigp(cpumask_t avail)
smp_cpu_polarization[logical_cpu] = POLARIZATION_UNKNWN;
if (!cpu_stopped(logical_cpu))
continue;
cpu_set(logical_cpu, cpu_present_map);
set_cpu_present(logical_cpu, true);
smp_cpu_state[logical_cpu] = CPU_STATE_CONFIGURED;
logical_cpu = cpumask_next(logical_cpu, &avail);
if (logical_cpu >= nr_cpu_ids)
......@@ -367,7 +367,7 @@ static int smp_rescan_cpus_sclp(cpumask_t avail)
continue;
__cpu_logical_map[logical_cpu] = cpu_id;
smp_cpu_polarization[logical_cpu] = POLARIZATION_UNKNWN;
cpu_set(logical_cpu, cpu_present_map);
set_cpu_present(logical_cpu, true);
if (cpu >= info->configured)
smp_cpu_state[logical_cpu] = CPU_STATE_STANDBY;
else
......@@ -385,7 +385,7 @@ static int __smp_rescan_cpus(void)
{
cpumask_t avail;
cpus_xor(avail, cpu_possible_map, cpu_present_map);
cpumask_xor(&avail, cpu_possible_mask, cpu_present_mask);
if (smp_use_sigp_detection)
return smp_rescan_cpus_sigp(avail);
else
......@@ -467,7 +467,7 @@ int __cpuinit start_secondary(void *cpuvoid)
notify_cpu_starting(smp_processor_id());
/* Mark this cpu as online */
ipi_call_lock();
cpu_set(smp_processor_id(), cpu_online_map);
set_cpu_online(smp_processor_id(), true);
ipi_call_unlock();
/* Switch on interrupts */
local_irq_enable();
......@@ -644,7 +644,7 @@ int __cpu_disable(void)
struct ec_creg_mask_parms cr_parms;
int cpu = smp_processor_id();
cpu_clear(cpu, cpu_online_map);
set_cpu_online(cpu, false);
/* Disable pfault pseudo page faults on this cpu. */
pfault_fini();
......@@ -654,8 +654,8 @@ int __cpu_disable(void)
/* disable all external interrupts */
cr_parms.orvals[0] = 0;
cr_parms.andvals[0] = ~(1 << 15 | 1 << 14 | 1 << 13 | 1 << 12 |
1 << 11 | 1 << 10 | 1 << 6 | 1 << 4);
cr_parms.andvals[0] = ~(1 << 15 | 1 << 14 | 1 << 13 | 1 << 11 |
1 << 10 | 1 << 9 | 1 << 6 | 1 << 4);
/* disable all I/O interrupts */
cr_parms.orvals[6] = 0;
cr_parms.andvals[6] = ~(1 << 31 | 1 << 30 | 1 << 29 | 1 << 28 |
......@@ -681,7 +681,7 @@ void __cpu_die(unsigned int cpu)
atomic_dec(&init_mm.context.attach_count);
}
void cpu_die(void)
void __noreturn cpu_die(void)
{
idle_task_exit();
while (sigp(smp_processor_id(), sigp_stop) == sigp_busy)
......@@ -738,8 +738,8 @@ void __init smp_prepare_boot_cpu(void)
BUG_ON(smp_processor_id() != 0);
current_thread_info()->cpu = 0;
cpu_set(0, cpu_present_map);
cpu_set(0, cpu_online_map);
set_cpu_present(0, true);
set_cpu_online(0, true);
S390_lowcore.percpu_offset = __per_cpu_offset[0];
current_set[0] = current;
smp_cpu_state[0] = CPU_STATE_CONFIGURED;
......@@ -1016,21 +1016,21 @@ int __ref smp_rescan_cpus(void)
get_online_cpus();
mutex_lock(&smp_cpu_state_mutex);
newcpus = cpu_present_map;
cpumask_copy(&newcpus, cpu_present_mask);
rc = __smp_rescan_cpus();
if (rc)
goto out;
cpus_andnot(newcpus, cpu_present_map, newcpus);
for_each_cpu_mask(cpu, newcpus) {
cpumask_andnot(&newcpus, cpu_present_mask, &newcpus);
for_each_cpu(cpu, &newcpus) {
rc = smp_add_present_cpu(cpu);
if (rc)
cpu_clear(cpu, cpu_present_map);
set_cpu_present(cpu, false);
}
rc = 0;
out:
mutex_unlock(&smp_cpu_state_mutex);
put_online_cpus();
if (!cpus_empty(newcpus))
if (!cpumask_empty(&newcpus))
topology_schedule_update();
return rc;
}
......
arch/s390/kernel/time.c
浏览文件 @ 0d66cba1
......@@ -810,7 +810,7 @@ static int etr_sync_clock_stop(struct etr_aib *aib, int port)
etr_sync.etr_port = port;
get_online_cpus();
atomic_set(&etr_sync.cpus, num_online_cpus() - 1);
rc = stop_machine(etr_sync_clock, &etr_sync, &cpu_online_map);
rc = stop_machine(etr_sync_clock, &etr_sync, cpu_online_mask);
put_online_cpus();
return rc;
}
......@@ -1579,7 +1579,7 @@ static void stp_work_fn(struct work_struct *work)
memset(&stp_sync, 0, sizeof(stp_sync));
get_online_cpus();
atomic_set(&stp_sync.cpus, num_online_cpus() - 1);
stop_machine(stp_sync_clock, &stp_sync, &cpu_online_map);
stop_machine(stp_sync_clock, &stp_sync, cpu_online_mask);
put_online_cpus();
if (!check_sync_clock())
......
arch/s390/kernel/topology.c
浏览文件 @ 0d66cba1
......@@ -52,20 +52,20 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
{
cpumask_t mask;
cpus_clear(mask);
cpumask_clear(&mask);
if (!topology_enabled || !MACHINE_HAS_TOPOLOGY) {
cpumask_copy(&mask, cpumask_of(cpu));
return mask;
}
while (info) {
if (cpu_isset(cpu, info->mask)) {
if (cpumask_test_cpu(cpu, &info->mask)) {
mask = info->mask;
break;
}
info = info->next;
}
if (cpus_empty(mask))
mask = cpumask_of_cpu(cpu);
if (cpumask_empty(&mask))
cpumask_copy(&mask, cpumask_of(cpu));
return mask;
}
......@@ -85,10 +85,10 @@ static void add_cpus_to_mask(struct topology_cpu *tl_cpu,
if (cpu_logical_map(lcpu) != rcpu)
continue;
#ifdef CONFIG_SCHED_BOOK
cpu_set(lcpu, book->mask);
cpumask_set_cpu(lcpu, &book->mask);
cpu_book_id[lcpu] = book->id;
#endif
cpu_set(lcpu, core->mask);
cpumask_set_cpu(lcpu, &core->mask);
cpu_core_id[lcpu] = core->id;
smp_cpu_polarization[lcpu] = tl_cpu->pp;
}
......@@ -101,13 +101,13 @@ static void clear_masks(void)
info = &core_info;
while (info) {
cpus_clear(info->mask);
cpumask_clear(&info->mask);
info = info->next;
}
#ifdef CONFIG_SCHED_BOOK
info = &book_info;
while (info) {
cpus_clear(info->mask);
cpumask_clear(&info->mask);
info = info->next;
}
#endif
......
arch/s390/kernel/vdso32/Makefile
浏览文件 @ 0d66cba1
......@@ -22,6 +22,9 @@ obj-y += vdso32_wrapper.o
extra-y += vdso32.lds
CPPFLAGS_vdso32.lds += -P -C -U$(ARCH)
# Disable gcov profiling for VDSO code
GCOV_PROFILE := n
# Force dependency (incbin is bad)
$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
......
arch/s390/kernel/vdso64/Makefile
浏览文件 @ 0d66cba1
......@@ -22,6 +22,9 @@ obj-y += vdso64_wrapper.o
extra-y += vdso64.lds
CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
# Disable gcov profiling for VDSO code
GCOV_PROFILE := n
# Force dependency (incbin is bad)
$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
......
arch/s390/mm/extmem.c
浏览文件 @ 0d66cba1
......@@ -412,6 +412,7 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long
struct dcss_segment *seg;
int rc, diag_cc;
start_addr = end_addr = 0;
seg = kmalloc(sizeof(*seg), GFP_KERNEL | GFP_DMA);
if (seg == NULL) {
rc = -ENOMEM;
......@@ -573,6 +574,7 @@ segment_modify_shared (char *name, int do_nonshared)
unsigned long start_addr, end_addr, dummy;
int rc, diag_cc;
start_addr = end_addr = 0;
mutex_lock(&dcss_lock);
seg = segment_by_name (name);
if (seg == NULL) {
......@@ -681,8 +683,6 @@ void
segment_save(char *name)
{
struct dcss_segment *seg;
int startpfn = 0;
int endpfn = 0;
char cmd1[160];
char cmd2[80];
int i, response;
......@@ -698,8 +698,6 @@ segment_save(char *name)
goto out;
}
startpfn = seg->start_addr >> PAGE_SHIFT;
endpfn = (seg->end) >> PAGE_SHIFT;
sprintf(cmd1, "DEFSEG %s", name);
for (i=0; i<seg->segcnt; i++) {
sprintf(cmd1+strlen(cmd1), " %lX-%lX %s",
......
arch/s390/mm/fault.c
浏览文件 @ 0d66cba1
......@@ -225,33 +225,6 @@ static noinline void do_sigbus(struct pt_regs *regs, long int_code,
force_sig_info(SIGBUS, &si, tsk);
}
#ifdef CONFIG_S390_EXEC_PROTECT
static noinline int signal_return(struct pt_regs *regs, long int_code,
unsigned long trans_exc_code)
{
u16 instruction;
int rc;
rc = __get_user(instruction, (u16 __user *) regs->psw.addr);
if (!rc && instruction == 0x0a77) {
clear_tsk_thread_flag(current, TIF_PER_TRAP);
if (is_compat_task())
sys32_sigreturn();
else
sys_sigreturn();
} else if (!rc && instruction == 0x0aad) {
clear_tsk_thread_flag(current, TIF_PER_TRAP);
if (is_compat_task())
sys32_rt_sigreturn();
else
sys_rt_sigreturn();
} else
do_sigsegv(regs, int_code, SEGV_MAPERR, trans_exc_code);
return 0;
}
#endif /* CONFIG_S390_EXEC_PROTECT */
static noinline void do_fault_error(struct pt_regs *regs, long int_code,
unsigned long trans_exc_code, int fault)
{
......@@ -259,13 +232,6 @@ static noinline void do_fault_error(struct pt_regs *regs, long int_code,
switch (fault) {
case VM_FAULT_BADACCESS:
#ifdef CONFIG_S390_EXEC_PROTECT
if ((regs->psw.mask & PSW_MASK_ASC) == PSW_ASC_SECONDARY &&
(trans_exc_code & 3) == 0) {
signal_return(regs, int_code, trans_exc_code);
break;
}
#endif /* CONFIG_S390_EXEC_PROTECT */
case VM_FAULT_BADMAP:
/* Bad memory access. Check if it is kernel or user space. */
if (regs->psw.mask & PSW_MASK_PSTATE) {
......@@ -414,11 +380,6 @@ void __kprobes do_dat_exception(struct pt_regs *regs, long pgm_int_code,
int access, fault;
access = VM_READ | VM_EXEC | VM_WRITE;
#ifdef CONFIG_S390_EXEC_PROTECT
if ((regs->psw.mask & PSW_MASK_ASC) == PSW_ASC_SECONDARY &&
(trans_exc_code & 3) == 0)
access = VM_EXEC;
#endif
fault = do_exception(regs, access, trans_exc_code);
if (unlikely(fault))
do_fault_error(regs, pgm_int_code & 255, trans_exc_code, fault);
......@@ -491,22 +452,28 @@ static int __init nopfault(char *str)
__setup("nopfault", nopfault);
typedef struct {
__u16 refdiagc;
__u16 reffcode;
__u16 refdwlen;
__u16 refversn;
__u64 refgaddr;
__u64 refselmk;
__u64 refcmpmk;
__u64 reserved;
} __attribute__ ((packed, aligned(8))) pfault_refbk_t;
struct pfault_refbk {
u16 refdiagc;
u16 reffcode;
u16 refdwlen;
u16 refversn;
u64 refgaddr;
u64 refselmk;
u64 refcmpmk;
u64 reserved;
} __attribute__ ((packed, aligned(8)));
int pfault_init(void)
{
pfault_refbk_t refbk =
{ 0x258, 0, 5, 2, __LC_CURRENT, 1ULL << 48, 1ULL << 48,
__PF_RES_FIELD };
struct pfault_refbk refbk = {
.refdiagc = 0x258,
.reffcode = 0,
.refdwlen = 5,
.refversn = 2,
.refgaddr = __LC_CURRENT_PID,
.refselmk = 1ULL << 48,
.refcmpmk = 1ULL << 48,
.reserved = __PF_RES_FIELD };
int rc;
if (!MACHINE_IS_VM || pfault_disable)
......@@ -524,8 +491,12 @@ int pfault_init(void)
void pfault_fini(void)
{
pfault_refbk_t refbk =
{ 0x258, 1, 5, 2, 0ULL, 0ULL, 0ULL, 0ULL };
struct pfault_refbk refbk = {
.refdiagc = 0x258,
.reffcode = 1,
.refdwlen = 5,
.refversn = 2,
};
if (!MACHINE_IS_VM || pfault_disable)
return;
......@@ -537,11 +508,15 @@ void pfault_fini(void)
: : "a" (&refbk), "m" (refbk) : "cc");
}
static DEFINE_SPINLOCK(pfault_lock);
static LIST_HEAD(pfault_list);
static void pfault_interrupt(unsigned int ext_int_code,
unsigned int param32, unsigned long param64)
{
struct task_struct *tsk;
__u16 subcode;
pid_t pid;
/*
* Get the external interruption subcode & pfault
......@@ -553,44 +528,79 @@ static void pfault_interrupt(unsigned int ext_int_code,
if ((subcode & 0xff00) != __SUBCODE_MASK)
return;
kstat_cpu(smp_processor_id()).irqs[EXTINT_PFL]++;
/*
* Get the token (= address of the task structure of the affected task).
*/
#ifdef CONFIG_64BIT
tsk = (struct task_struct *) param64;
#else
tsk = (struct task_struct *) param32;
#endif
if (subcode & 0x0080) {
/* Get the token (= pid of the affected task). */
pid = sizeof(void *) == 4 ? param32 : param64;
rcu_read_lock();
tsk = find_task_by_pid_ns(pid, &init_pid_ns);
if (tsk)
get_task_struct(tsk);
rcu_read_unlock();
if (!tsk)
return;
} else {
tsk = current;
}
spin_lock(&pfault_lock);
if (subcode & 0x0080) {
/* signal bit is set -> a page has been swapped in by VM */
if (xchg(&tsk->thread.pfault_wait, -1) != 0) {
if (tsk->thread.pfault_wait == 1) {
/* Initial interrupt was faster than the completion
* interrupt. pfault_wait is valid. Set pfault_wait
* back to zero and wake up the process. This can
* safely be done because the task is still sleeping
* and can't produce new pfaults. */
tsk->thread.pfault_wait = 0;
list_del(&tsk->thread.list);
wake_up_process(tsk);
put_task_struct(tsk);
} else {
/* Completion interrupt was faster than initial
* interrupt. Set pfault_wait to -1 so the initial
* interrupt doesn't put the task to sleep. */
tsk->thread.pfault_wait = -1;
}
put_task_struct(tsk);
} else {
/* signal bit not set -> a real page is missing. */
get_task_struct(tsk);
set_task_state(tsk, TASK_UNINTERRUPTIBLE);
if (xchg(&tsk->thread.pfault_wait, 1) != 0) {
if (tsk->thread.pfault_wait == -1) {
/* Completion interrupt was faster than the initial
* interrupt (swapped in a -1 for pfault_wait). Set
* pfault_wait back to zero and exit. This can be
* done safely because tsk is running in kernel
* mode and can't produce new pfaults. */
* interrupt (pfault_wait == -1). Set pfault_wait
* back to zero and exit. */
tsk->thread.pfault_wait = 0;
set_task_state(tsk, TASK_RUNNING);
put_task_struct(tsk);
} else
} else {
/* Initial interrupt arrived before completion
* interrupt. Let the task sleep. */
tsk->thread.pfault_wait = 1;
list_add(&tsk->thread.list, &pfault_list);
set_task_state(tsk, TASK_UNINTERRUPTIBLE);
set_tsk_need_resched(tsk);
}
}
spin_unlock(&pfault_lock);
}
static int __cpuinit pfault_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
struct thread_struct *thread, *next;
struct task_struct *tsk;
switch (action) {
case CPU_DEAD:
case CPU_DEAD_FROZEN:
spin_lock_irq(&pfault_lock);
list_for_each_entry_safe(thread, next, &pfault_list, list) {
thread->pfault_wait = 0;
list_del(&thread->list);
tsk = container_of(thread, struct task_struct, thread);
wake_up_process(tsk);
}
spin_unlock_irq(&pfault_lock);
break;
default:
break;
}
return NOTIFY_OK;
}
static int __init pfault_irq_init(void)
......@@ -599,22 +609,21 @@ static int __init pfault_irq_init(void)
if (!MACHINE_IS_VM)
return 0;
/*
* Try to get pfault pseudo page faults going.
*/
rc = register_external_interrupt(0x2603, pfault_interrupt);
if (rc) {
pfault_disable = 1;
return rc;
}
if (pfault_init() == 0)
return 0;
if (rc)
goto out_extint;
rc = pfault_init() == 0 ? 0 : -EOPNOTSUPP;
if (rc)
goto out_pfault;
hotcpu_notifier(pfault_cpu_notify, 0);
return 0;
/* Tough luck, no pfault. */
pfault_disable = 1;
out_pfault:
unregister_external_interrupt(0x2603, pfault_interrupt);
return 0;
out_extint:
pfault_disable = 1;
return rc;
}
early_initcall(pfault_irq_init);
#endif
#endif /* CONFIG_PFAULT */
arch/s390/mm/hugetlbpage.c
浏览文件 @ 0d66cba1
......@@ -13,7 +13,6 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *pteptr, pte_t pteval)
{
pmd_t *pmdp = (pmd_t *) pteptr;
pte_t shadow_pteval = pteval;
unsigned long mask;
if (!MACHINE_HAS_HPAGE) {
......@@ -21,18 +20,9 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
mask = pte_val(pteval) &
(_SEGMENT_ENTRY_INV | _SEGMENT_ENTRY_RO);
pte_val(pteval) = (_SEGMENT_ENTRY + __pa(pteptr)) | mask;
if (mm->context.noexec) {
pteptr += PTRS_PER_PTE;
pte_val(shadow_pteval) =
(_SEGMENT_ENTRY + __pa(pteptr)) | mask;
}
}
pmd_val(*pmdp) = pte_val(pteval);
if (mm->context.noexec) {
pmdp = get_shadow_table(pmdp);
pmd_val(*pmdp) = pte_val(shadow_pteval);
}
}
int arch_prepare_hugepage(struct page *page)
......
arch/s390/mm/init.c
浏览文件 @ 0d66cba1
......@@ -175,7 +175,8 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
pmd = pmd_offset(pud, address);
pte = pte_offset_kernel(pmd, address);
if (!enable) {
ptep_invalidate(&init_mm, address, pte);
__ptep_ipte(address, pte);
pte_val(*pte) = _PAGE_TYPE_EMPTY;
continue;
}
*pte = mk_pte_phys(address, __pgprot(_PAGE_TYPE_RW));
......
arch/s390/mm/pageattr.c
浏览文件 @ 0d66cba1
......@@ -28,7 +28,7 @@ static void change_page_attr(unsigned long addr, int numpages,
pte = *ptep;
pte = set(pte);
ptep_invalidate(&init_mm, addr, ptep);
__ptep_ipte(addr, ptep);
*ptep = pte;
addr += PAGE_SIZE;
}
......
arch/s390/mm/pgtable.c
浏览文件 @ 0d66cba1
......@@ -40,7 +40,6 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
static DEFINE_PER_CPU(struct rcu_table_freelist *, rcu_table_freelist);
static void __page_table_free(struct mm_struct *mm, unsigned long *table);
static void __crst_table_free(struct mm_struct *mm, unsigned long *table);
static struct rcu_table_freelist *rcu_table_freelist_get(struct mm_struct *mm)
{
......@@ -67,7 +66,7 @@ static void rcu_table_freelist_callback(struct rcu_head *head)
while (batch->pgt_index > 0)
__page_table_free(batch->mm, batch->table[--batch->pgt_index]);
while (batch->crst_index < RCU_FREELIST_SIZE)
__crst_table_free(batch->mm, batch->table[batch->crst_index++]);
crst_table_free(batch->mm, batch->table[batch->crst_index++]);
free_page((unsigned long) batch);
}
......@@ -125,63 +124,33 @@ static int __init parse_vmalloc(char *arg)
}
early_param("vmalloc", parse_vmalloc);
unsigned long *crst_table_alloc(struct mm_struct *mm, int noexec)
unsigned long *crst_table_alloc(struct mm_struct *mm)
{
struct page *page = alloc_pages(GFP_KERNEL, ALLOC_ORDER);
if (!page)
return NULL;
page->index = 0;
if (noexec) {
struct page *shadow = alloc_pages(GFP_KERNEL, ALLOC_ORDER);
if (!shadow) {
__free_pages(page, ALLOC_ORDER);
return NULL;
}
page->index = page_to_phys(shadow);
}
spin_lock_bh(&mm->context.list_lock);
list_add(&page->lru, &mm->context.crst_list);
spin_unlock_bh(&mm->context.list_lock);
return (unsigned long *) page_to_phys(page);
}
static void __crst_table_free(struct mm_struct *mm, unsigned long *table)
{
unsigned long *shadow = get_shadow_table(table);
if (shadow)
free_pages((unsigned long) shadow, ALLOC_ORDER);
free_pages((unsigned long) table, ALLOC_ORDER);
}
void crst_table_free(struct mm_struct *mm, unsigned long *table)
{
struct page *page = virt_to_page(table);
spin_lock_bh(&mm->context.list_lock);
list_del(&page->lru);
spin_unlock_bh(&mm->context.list_lock);
__crst_table_free(mm, table);
free_pages((unsigned long) table, ALLOC_ORDER);
}
void crst_table_free_rcu(struct mm_struct *mm, unsigned long *table)
{
struct rcu_table_freelist *batch;
struct page *page = virt_to_page(table);
spin_lock_bh(&mm->context.list_lock);
list_del(&page->lru);
spin_unlock_bh(&mm->context.list_lock);
if (atomic_read(&mm->mm_users) < 2 &&
cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id()))) {
__crst_table_free(mm, table);
crst_table_free(mm, table);
return;
}
batch = rcu_table_freelist_get(mm);
if (!batch) {
smp_call_function(smp_sync, NULL, 1);
__crst_table_free(mm, table);
crst_table_free(mm, table);
return;
}
batch->table[--batch->crst_index] = table;
......@@ -197,7 +166,7 @@ int crst_table_upgrade(struct mm_struct *mm, unsigned long limit)
BUG_ON(limit > (1UL << 53));
repeat:
table = crst_table_alloc(mm, mm->context.noexec);
table = crst_table_alloc(mm);
if (!table)
return -ENOMEM;
spin_lock_bh(&mm->page_table_lock);
......@@ -273,7 +242,7 @@ unsigned long *page_table_alloc(struct mm_struct *mm)
unsigned long *table;
unsigned long bits;
bits = (mm->context.noexec || mm->context.has_pgste) ? 3UL : 1UL;
bits = (mm->context.has_pgste) ? 3UL : 1UL;
spin_lock_bh(&mm->context.list_lock);
page = NULL;
if (!list_empty(&mm->context.pgtable_list)) {
......@@ -329,7 +298,7 @@ void page_table_free(struct mm_struct *mm, unsigned long *table)
struct page *page;
unsigned long bits;
bits = (mm->context.noexec || mm->context.has_pgste) ? 3UL : 1UL;
bits = (mm->context.has_pgste) ? 3UL : 1UL;
bits <<= (__pa(table) & (PAGE_SIZE - 1)) / 256 / sizeof(unsigned long);
page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
spin_lock_bh(&mm->context.list_lock);
......@@ -366,7 +335,7 @@ void page_table_free_rcu(struct mm_struct *mm, unsigned long *table)
page_table_free(mm, table);
return;
}
bits = (mm->context.noexec || mm->context.has_pgste) ? 3UL : 1UL;
bits = (mm->context.has_pgste) ? 3UL : 1UL;
bits <<= (__pa(table) & (PAGE_SIZE - 1)) / 256 / sizeof(unsigned long);
page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
spin_lock_bh(&mm->context.list_lock);
......@@ -379,25 +348,6 @@ void page_table_free_rcu(struct mm_struct *mm, unsigned long *table)
rcu_table_freelist_finish();
}
void disable_noexec(struct mm_struct *mm, struct task_struct *tsk)
{
struct page *page;
spin_lock_bh(&mm->context.list_lock);
/* Free shadow region and segment tables. */
list_for_each_entry(page, &mm->context.crst_list, lru)
if (page->index) {
free_pages((unsigned long) page->index, ALLOC_ORDER);
page->index = 0;
}
/* "Free" second halves of page tables. */
list_for_each_entry(page, &mm->context.pgtable_list, lru)
page->flags &= ~SECOND_HALVES;
spin_unlock_bh(&mm->context.list_lock);
mm->context.noexec = 0;
update_mm(mm, tsk);
}
/*
* switch on pgstes for its userspace process (for kvm)
*/
......
arch/s390/mm/vmem.c
浏览文件 @ 0d66cba1
......@@ -95,7 +95,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
pu_dir = vmem_pud_alloc();
if (!pu_dir)
goto out;
pgd_populate_kernel(&init_mm, pg_dir, pu_dir);
pgd_populate(&init_mm, pg_dir, pu_dir);
}
pu_dir = pud_offset(pg_dir, address);
......@@ -103,7 +103,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
pm_dir = vmem_pmd_alloc();
if (!pm_dir)
goto out;
pud_populate_kernel(&init_mm, pu_dir, pm_dir);
pud_populate(&init_mm, pu_dir, pm_dir);
}
pte = mk_pte_phys(address, __pgprot(ro ? _PAGE_RO : 0));
......@@ -123,7 +123,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
pt_dir = vmem_pte_alloc();
if (!pt_dir)
goto out;
pmd_populate_kernel(&init_mm, pm_dir, pt_dir);
pmd_populate(&init_mm, pm_dir, pt_dir);
}
pt_dir = pte_offset_kernel(pm_dir, address);
......@@ -159,7 +159,7 @@ static void vmem_remove_range(unsigned long start, unsigned long size)
continue;
if (pmd_huge(*pm_dir)) {
pmd_clear_kernel(pm_dir);
pmd_clear(pm_dir);
address += HPAGE_SIZE - PAGE_SIZE;
continue;
}
......@@ -192,7 +192,7 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
pu_dir = vmem_pud_alloc();
if (!pu_dir)
goto out;
pgd_populate_kernel(&init_mm, pg_dir, pu_dir);
pgd_populate(&init_mm, pg_dir, pu_dir);
}
pu_dir = pud_offset(pg_dir, address);
......@@ -200,7 +200,7 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
pm_dir = vmem_pmd_alloc();
if (!pm_dir)
goto out;
pud_populate_kernel(&init_mm, pu_dir, pm_dir);
pud_populate(&init_mm, pu_dir, pm_dir);
}
pm_dir = pmd_offset(pu_dir, address);
......@@ -208,7 +208,7 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
pt_dir = vmem_pte_alloc();
if (!pt_dir)
goto out;
pmd_populate_kernel(&init_mm, pm_dir, pt_dir);
pmd_populate(&init_mm, pm_dir, pt_dir);
}
pt_dir = pte_offset_kernel(pm_dir, address);
......
arch/s390/oprofile/hwsampler.c
浏览文件 @ 0d66cba1
......@@ -5,6 +5,7 @@
* Author: Heinz Graalfs <graalfs@de.ibm.com>
*/
#include <linux/kernel_stat.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/smp.h>
......@@ -674,17 +675,11 @@ int hwsampler_activate(unsigned int cpu)
static void hws_ext_handler(unsigned int ext_int_code,
unsigned int param32, unsigned long param64)
{
int cpu;
struct hws_cpu_buffer *cb;
cpu = smp_processor_id();
cb = &per_cpu(sampler_cpu_buffer, cpu);
atomic_xchg(
&cb->ext_params,
atomic_read(&cb->ext_params)
| S390_lowcore.ext_params);
kstat_cpu(smp_processor_id()).irqs[EXTINT_CPM]++;
cb = &__get_cpu_var(sampler_cpu_buffer);
atomic_xchg(&cb->ext_params, atomic_read(&cb->ext_params) | param32);
if (hws_wq)
queue_work(hws_wq, &cb->worker);
}
......@@ -764,7 +759,7 @@ static int worker_check_error(unsigned int cpu, int ext_params)
if (!sdbt || !*sdbt)
return -EINVAL;
if (ext_params & EI_IEA)
if (ext_params & EI_PRA)
cb->req_alert++;
if (ext_params & EI_LSDA)
......@@ -1009,7 +1004,7 @@ int hwsampler_deallocate()
if (hws_state != HWS_STOPPED)
goto deallocate_exit;
smp_ctl_clear_bit(0, 5); /* set bit 58 CR0 off */
ctl_clear_bit(0, 5); /* set bit 58 CR0 off */
deallocate_sdbt();
hws_state = HWS_DEALLOCATED;
......@@ -1123,7 +1118,7 @@ int hwsampler_shutdown()
mutex_lock(&hws_sem);
if (hws_state == HWS_STOPPED) {
smp_ctl_clear_bit(0, 5); /* set bit 58 CR0 off */
ctl_clear_bit(0, 5); /* set bit 58 CR0 off */
deallocate_sdbt();
}
if (hws_wq) {
......@@ -1198,7 +1193,7 @@ int hwsampler_start_all(unsigned long rate)
hws_oom = 1;
hws_flush_all = 0;
/* now let them in, 1407 CPUMF external interrupts */
smp_ctl_set_bit(0, 5); /* set CR0 bit 58 */
ctl_set_bit(0, 5); /* set CR0 bit 58 */
return 0;
}
......
drivers/crypto/Kconfig
浏览文件 @ 0d66cba1
......@@ -74,6 +74,8 @@ config ZCRYPT
+ PCI-X Cryptographic Coprocessor (PCIXCC)
+ Crypto Express2 Coprocessor (CEX2C)
+ Crypto Express2 Accelerator (CEX2A)
+ Crypto Express3 Coprocessor (CEX3C)
+ Crypto Express3 Accelerator (CEX3A)
config ZCRYPT_MONOLITHIC
bool "Monolithic zcrypt module"
......
drivers/s390/block/dasd_alias.c
浏览文件 @ 0d66cba1
......@@ -253,13 +253,11 @@ int dasd_alias_make_device_known_to_lcu(struct dasd_device *device)
*/
void dasd_alias_lcu_setup_complete(struct dasd_device *device)
{
struct dasd_eckd_private *private;
unsigned long flags;
struct alias_server *server;
struct alias_lcu *lcu;
struct dasd_uid uid;
private = (struct dasd_eckd_private *) device->private;
device->discipline->get_uid(device, &uid);
lcu = NULL;
spin_lock_irqsave(&aliastree.lock, flags);
......@@ -279,13 +277,11 @@ void dasd_alias_lcu_setup_complete(struct dasd_device *device)
void dasd_alias_wait_for_lcu_setup(struct dasd_device *device)
{
struct dasd_eckd_private *private;
unsigned long flags;
struct alias_server *server;
struct alias_lcu *lcu;
struct dasd_uid uid;
private = (struct dasd_eckd_private *) device->private;
device->discipline->get_uid(device, &uid);
lcu = NULL;
spin_lock_irqsave(&aliastree.lock, flags);
......
drivers/s390/block/dasd_eckd.c
浏览文件 @ 0d66cba1
......@@ -1611,10 +1611,8 @@ static void dasd_eckd_analysis_callback(struct dasd_ccw_req *init_cqr,
static int dasd_eckd_start_analysis(struct dasd_block *block)
{
struct dasd_eckd_private *private;
struct dasd_ccw_req *init_cqr;
private = (struct dasd_eckd_private *) block->base->private;
init_cqr = dasd_eckd_analysis_ccw(block->base);
if (IS_ERR(init_cqr))
return PTR_ERR(init_cqr);
......@@ -2264,7 +2262,6 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track(
unsigned int blk_per_trk,
unsigned int blksize)
{
struct dasd_eckd_private *private;
unsigned long *idaws;
struct dasd_ccw_req *cqr;
struct ccw1 *ccw;
......@@ -2283,7 +2280,6 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track(
unsigned int recoffs;
basedev = block->base;
private = (struct dasd_eckd_private *) basedev->private;
if (rq_data_dir(req) == READ)
cmd = DASD_ECKD_CCW_READ_TRACK_DATA;
else if (rq_data_dir(req) == WRITE)
......@@ -2556,8 +2552,7 @@ static int prepare_itcw(struct itcw *itcw,
dcw = itcw_add_dcw(itcw, pfx_cmd, 0,
&pfxdata, sizeof(pfxdata), total_data_size);
return rc;
return IS_ERR(dcw) ? PTR_ERR(dcw) : 0;
}
static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track(
......@@ -2573,7 +2568,6 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track(
unsigned int blk_per_trk,
unsigned int blksize)
{
struct dasd_eckd_private *private;
struct dasd_ccw_req *cqr;
struct req_iterator iter;
struct bio_vec *bv;
......@@ -2594,7 +2588,6 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track(
unsigned int count, count_to_trk_end;
basedev = block->base;
private = (struct dasd_eckd_private *) basedev->private;
if (rq_data_dir(req) == READ) {
cmd = DASD_ECKD_CCW_READ_TRACK_DATA;
itcw_op = ITCW_OP_READ;
......@@ -2801,7 +2794,6 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
struct dasd_block *block,
struct request *req)
{
struct dasd_eckd_private *private;
unsigned long *idaws;
struct dasd_device *basedev;
struct dasd_ccw_req *cqr;
......@@ -2836,7 +2828,6 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
trkcount = last_trk - first_trk + 1;
first_offs = 0;
basedev = block->base;
private = (struct dasd_eckd_private *) basedev->private;
if (rq_data_dir(req) == READ)
cmd = DASD_ECKD_CCW_READ_TRACK;
......
drivers/s390/char/Kconfig
浏览文件 @ 0d66cba1
......@@ -119,18 +119,6 @@ config S390_TAPE
comment "S/390 tape interface support"
depends on S390_TAPE
config S390_TAPE_BLOCK
def_bool y
prompt "Support for tape block devices"
depends on S390_TAPE && BLOCK
help
Select this option if you want to access your channel-attached tape
devices using the block device interface. This interface is similar
to CD-ROM devices on other platforms. The tapes can only be
accessed read-only when using this interface. Have a look at
<file:Documentation/s390/TAPE> for further information about creating
volumes for and using this interface. It is safe to say "Y" here.
comment "S/390 tape hardware support"
depends on S390_TAPE
......
drivers/s390/char/Makefile
浏览文件 @ 0d66cba1
......@@ -3,7 +3,7 @@
#
obj-y += ctrlchar.o keyboard.o defkeymap.o sclp.o sclp_rw.o sclp_quiesce.o \
sclp_cmd.o sclp_config.o sclp_cpi_sys.o
sclp_cmd.o sclp_config.o sclp_cpi_sys.o sclp_ocf.o
obj-$(CONFIG_TN3270) += raw3270.o
obj-$(CONFIG_TN3270_CONSOLE) += con3270.o
......@@ -22,7 +22,6 @@ obj-$(CONFIG_ZVM_WATCHDOG) += vmwatchdog.o
obj-$(CONFIG_VMLOGRDR) += vmlogrdr.o
obj-$(CONFIG_VMCP) += vmcp.o
tape-$(CONFIG_S390_TAPE_BLOCK) += tape_block.o
tape-$(CONFIG_PROC_FS) += tape_proc.o
tape-objs := tape_core.o tape_std.o tape_char.o $(tape-y)
obj-$(CONFIG_S390_TAPE) += tape.o tape_class.o
......
drivers/s390/char/monwriter.c
浏览文件 @ 0d66cba1
......@@ -97,7 +97,7 @@ static int monwrite_new_hdr(struct mon_private *monpriv)
{
struct monwrite_hdr *monhdr = &monpriv->hdr;
struct mon_buf *monbuf;
int rc;
int rc = 0;
if (monhdr->datalen > MONWRITE_MAX_DATALEN ||
monhdr->mon_function > MONWRITE_START_CONFIG ||
......@@ -135,7 +135,7 @@ static int monwrite_new_hdr(struct mon_private *monpriv)
mon_buf_count++;
}
monpriv->current_buf = monbuf;
return 0;
return rc;
}
static int monwrite_new_data(struct mon_private *monpriv)
......
drivers/s390/char/raw3270.c
浏览文件 @ 0d66cba1
......@@ -598,7 +598,6 @@ __raw3270_size_device(struct raw3270 *rp)
static const unsigned char wbuf[] =
{ 0x00, 0x07, 0x01, 0xff, 0x03, 0x00, 0x81 };
struct raw3270_ua *uap;
unsigned short count;
int rc;
/*
......@@ -653,7 +652,6 @@ __raw3270_size_device(struct raw3270 *rp)
if (rc)
return rc;
/* Got a Query Reply */
count = sizeof(rp->init_data) - rp->init_request.rescnt;
uap = (struct raw3270_ua *) (rp->init_data + 1);
/* Paranoia check. */
if (rp->init_data[0] != 0x88 || uap->uab.qcode != 0x81)
......
drivers/s390/char/sclp.h
浏览文件 @ 0d66cba1
......@@ -28,6 +28,7 @@
#define EVTYP_CONFMGMDATA 0x04
#define EVTYP_SDIAS 0x1C
#define EVTYP_ASYNC 0x0A
#define EVTYP_OCF 0x1E
#define EVTYP_OPCMD_MASK 0x80000000
#define EVTYP_MSG_MASK 0x40000000
......@@ -40,6 +41,7 @@
#define EVTYP_CONFMGMDATA_MASK 0x10000000
#define EVTYP_SDIAS_MASK 0x00000010
#define EVTYP_ASYNC_MASK 0x00400000
#define EVTYP_OCF_MASK 0x00000004
#define GNRLMSGFLGS_DOM 0x8000
#define GNRLMSGFLGS_SNDALRM 0x4000
......@@ -186,4 +188,26 @@ sclp_ascebc_str(unsigned char *str, int nr)
(MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
}
static inline struct gds_vector *
sclp_find_gds_vector(void *start, void *end, u16 id)
{
struct gds_vector *v;
for (v = start; (void *) v < end; v = (void *) v + v->length)
if (v->gds_id == id)
return v;
return NULL;
}
static inline struct gds_subvector *
sclp_find_gds_subvector(void *start, void *end, u8 key)
{
struct gds_subvector *sv;
for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length)
if (sv->key == key)
return sv;
return NULL;
}
#endif /* __SCLP_H__ */
drivers/s390/char/sclp_config.c
浏览文件 @ 0d66cba1
......@@ -71,21 +71,9 @@ static struct sclp_register sclp_conf_register =
static int __init sclp_conf_init(void)
{
int rc;
INIT_WORK(&sclp_cpu_capability_work, sclp_cpu_capability_notify);
INIT_WORK(&sclp_cpu_change_work, sclp_cpu_change_notify);
rc = sclp_register(&sclp_conf_register);
if (rc)
return rc;
if (!(sclp_conf_register.sclp_send_mask & EVTYP_CONFMGMDATA_MASK)) {
pr_warning("no configuration management.\n");
sclp_unregister(&sclp_conf_register);
rc = -ENOSYS;
}
return rc;
return sclp_register(&sclp_conf_register);
}
__initcall(sclp_conf_init);
drivers/s390/char/sclp_ocf.c 0 → 100644
浏览文件 @ 0d66cba1
/*
* drivers/s390/char/sclp_ocf.c
* SCLP OCF communication parameters sysfs interface
*
* Copyright IBM Corp. 2011
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
*/
#define KMSG_COMPONENT "sclp_ocf"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/stat.h>
#include <linux/device.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/kmod.h>
#include <linux/timer.h>
#include <linux/err.h>
#include <asm/ebcdic.h>
#include <asm/sclp.h>
#include "sclp.h"
#define OCF_LENGTH_HMC_NETWORK 8UL
#define OCF_LENGTH_CPC_NAME 8UL
static char hmc_network[OCF_LENGTH_HMC_NETWORK + 1];
static char cpc_name[OCF_LENGTH_CPC_NAME + 1];
static DEFINE_SPINLOCK(sclp_ocf_lock);
static struct work_struct sclp_ocf_change_work;
static struct kset *ocf_kset;
static void sclp_ocf_change_notify(struct work_struct *work)
{
kobject_uevent(&ocf_kset->kobj, KOBJ_CHANGE);
}
/* Handler for OCF event. Look for the CPC image name. */
static void sclp_ocf_handler(struct evbuf_header *evbuf)
{
struct gds_vector *v;
struct gds_subvector *sv, *netid, *cpc;
size_t size;
/* Find the 0x9f00 block. */
v = sclp_find_gds_vector(evbuf + 1, (void *) evbuf + evbuf->length,
0x9f00);
if (!v)
return;
/* Find the 0x9f22 block inside the 0x9f00 block. */
v = sclp_find_gds_vector(v + 1, (void *) v + v->length, 0x9f22);
if (!v)
return;
/* Find the 0x81 block inside the 0x9f22 block. */
sv = sclp_find_gds_subvector(v + 1, (void *) v + v->length, 0x81);
if (!sv)
return;
/* Find the 0x01 block inside the 0x81 block. */
netid = sclp_find_gds_subvector(sv + 1, (void *) sv + sv->length, 1);
/* Find the 0x02 block inside the 0x81 block. */
cpc = sclp_find_gds_subvector(sv + 1, (void *) sv + sv->length, 2);
/* Copy network name and cpc name. */
spin_lock(&sclp_ocf_lock);
if (netid) {
size = min(OCF_LENGTH_HMC_NETWORK, (size_t) netid->length);
memcpy(hmc_network, netid + 1, size);
EBCASC(hmc_network, size);
hmc_network[size] = 0;
}
if (cpc) {
size = min(OCF_LENGTH_CPC_NAME, (size_t) cpc->length);
memcpy(cpc_name, cpc + 1, size);
EBCASC(cpc_name, size);
cpc_name[size] = 0;
}
spin_unlock(&sclp_ocf_lock);
schedule_work(&sclp_ocf_change_work);
}
static struct sclp_register sclp_ocf_event = {
.receive_mask = EVTYP_OCF_MASK,
.receiver_fn = sclp_ocf_handler,
};
static ssize_t cpc_name_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
int rc;
spin_lock_irq(&sclp_ocf_lock);
rc = snprintf(page, PAGE_SIZE, "%s\n", cpc_name);
spin_unlock_irq(&sclp_ocf_lock);
return rc;
}
static struct kobj_attribute cpc_name_attr =
__ATTR(cpc_name, 0444, cpc_name_show, NULL);
static ssize_t hmc_network_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
int rc;
spin_lock_irq(&sclp_ocf_lock);
rc = snprintf(page, PAGE_SIZE, "%s\n", hmc_network);
spin_unlock_irq(&sclp_ocf_lock);
return rc;
}
static struct kobj_attribute hmc_network_attr =
__ATTR(hmc_network, 0444, hmc_network_show, NULL);
static struct attribute *ocf_attrs[] = {
&cpc_name_attr.attr,
&hmc_network_attr.attr,
NULL,
};
static struct attribute_group ocf_attr_group = {
.attrs = ocf_attrs,
};
static int __init ocf_init(void)
{
int rc;
INIT_WORK(&sclp_ocf_change_work, sclp_ocf_change_notify);
ocf_kset = kset_create_and_add("ocf", NULL, firmware_kobj);
if (!ocf_kset)
return -ENOMEM;
rc = sysfs_create_group(&ocf_kset->kobj, &ocf_attr_group);
if (rc) {
kset_unregister(ocf_kset);
return rc;
}
return sclp_register(&sclp_ocf_event);
}
device_initcall(ocf_init);
drivers/s390/char/sclp_sdias.c
浏览文件 @ 0d66cba1
......@@ -69,9 +69,6 @@ static DEFINE_MUTEX(sdias_mutex);
static void sdias_callback(struct sclp_req *request, void *data)
{
struct sdias_sccb *cbsccb;
cbsccb = (struct sdias_sccb *) request->sccb;
sclp_req_done = 1;
wake_up(&sdias_wq); /* Inform caller, that request is complete */
TRACE("callback done\n");
......
drivers/s390/char/sclp_tty.c
浏览文件 @ 0d66cba1
......@@ -408,118 +408,72 @@ static int sclp_switch_cases(unsigned char *buf, int count)
return op - buf;
}
static void
sclp_get_input(unsigned char *start, unsigned char *end)
static void sclp_get_input(struct gds_subvector *sv)
{
unsigned char *str;
int count;
count = end - start;
str = (unsigned char *) (sv + 1);
count = sv->length - sizeof(*sv);
if (sclp_tty_tolower)
EBC_TOLOWER(start, count);
count = sclp_switch_cases(start, count);
EBC_TOLOWER(str, count);
count = sclp_switch_cases(str, count);
/* convert EBCDIC to ASCII (modify original input in SCCB) */
sclp_ebcasc_str(start, count);
sclp_ebcasc_str(str, count);
/* transfer input to high level driver */
sclp_tty_input(start, count);
}
static inline struct gds_vector *
find_gds_vector(struct gds_vector *start, struct gds_vector *end, u16 id)
{
struct gds_vector *vec;
for (vec = start; vec < end; vec = (void *) vec + vec->length)
if (vec->gds_id == id)
return vec;
return NULL;
sclp_tty_input(str, count);
}
static inline struct gds_subvector *
find_gds_subvector(struct gds_subvector *start,
struct gds_subvector *end, u8 key)
static inline void sclp_eval_selfdeftextmsg(struct gds_subvector *sv)
{
struct gds_subvector *subvec;
void *end;
for (subvec = start; subvec < end;
subvec = (void *) subvec + subvec->length)
if (subvec->key == key)
return subvec;
return NULL;
end = (void *) sv + sv->length;
for (sv = sv + 1; (void *) sv < end; sv = (void *) sv + sv->length)
if (sv->key == 0x30)
sclp_get_input(sv);
}
static inline void
sclp_eval_selfdeftextmsg(struct gds_subvector *start,
struct gds_subvector *end)
static inline void sclp_eval_textcmd(struct gds_vector *v)
{
struct gds_subvector *subvec;
subvec = start;
while (subvec < end) {
subvec = find_gds_subvector(subvec, end, 0x30);
if (!subvec)
break;
sclp_get_input((unsigned char *)(subvec + 1),
(unsigned char *) subvec + subvec->length);
subvec = (void *) subvec + subvec->length;
}
}
struct gds_subvector *sv;
void *end;
static inline void
sclp_eval_textcmd(struct gds_subvector *start,
struct gds_subvector *end)
{
struct gds_subvector *subvec;
end = (void *) v + v->length;
for (sv = (struct gds_subvector *) (v + 1);
(void *) sv < end; sv = (void *) sv + sv->length)
if (sv->key == GDS_KEY_SELFDEFTEXTMSG)
sclp_eval_selfdeftextmsg(sv);
subvec = start;
while (subvec < end) {
subvec = find_gds_subvector(subvec, end,
GDS_KEY_SELFDEFTEXTMSG);
if (!subvec)
break;
sclp_eval_selfdeftextmsg((struct gds_subvector *)(subvec + 1),
(void *)subvec + subvec->length);
subvec = (void *) subvec + subvec->length;
}
}
static inline void
sclp_eval_cpmsu(struct gds_vector *start, struct gds_vector *end)
static inline void sclp_eval_cpmsu(struct gds_vector *v)
{
struct gds_vector *vec;
void *end;
vec = start;
while (vec < end) {
vec = find_gds_vector(vec, end, GDS_ID_TEXTCMD);
if (!vec)
break;
sclp_eval_textcmd((struct gds_subvector *)(vec + 1),
(void *) vec + vec->length);
vec = (void *) vec + vec->length;
}
end = (void *) v + v->length;
for (v = v + 1; (void *) v < end; v = (void *) v + v->length)
if (v->gds_id == GDS_ID_TEXTCMD)
sclp_eval_textcmd(v);
}
static inline void
sclp_eval_mdsmu(struct gds_vector *start, void *end)
static inline void sclp_eval_mdsmu(struct gds_vector *v)
{
struct gds_vector *vec;
vec = find_gds_vector(start, end, GDS_ID_CPMSU);
if (vec)
sclp_eval_cpmsu(vec + 1, (void *) vec + vec->length);
v = sclp_find_gds_vector(v + 1, (void *) v + v->length, GDS_ID_CPMSU);
if (v)
sclp_eval_cpmsu(v);
}
static void
sclp_tty_receiver(struct evbuf_header *evbuf)
static void sclp_tty_receiver(struct evbuf_header *evbuf)
{
struct gds_vector *start, *end, *vec;
struct gds_vector *v;
start = (struct gds_vector *)(evbuf + 1);
end = (void *) evbuf + evbuf->length;
vec = find_gds_vector(start, end, GDS_ID_MDSMU);
if (vec)
sclp_eval_mdsmu(vec + 1, (void *) vec + vec->length);
v = sclp_find_gds_vector(evbuf + 1, (void *) evbuf + evbuf->length,
GDS_ID_MDSMU);
if (v)
sclp_eval_mdsmu(v);
}
static void
......
drivers/s390/char/tape_3590.c
浏览文件 @ 0d66cba1
......@@ -796,10 +796,8 @@ static void tape_3590_med_state_set(struct tape_device *device,
static int
tape_3590_done(struct tape_device *device, struct tape_request *request)
{
struct tape_3590_disc_data *disc_data;
DBF_EVENT(6, "%s done\n", tape_op_verbose[request->op]);
disc_data = device->discdata;
switch (request->op) {
case TO_BSB:
......@@ -1394,17 +1392,12 @@ tape_3590_print_era_msg(struct tape_device *device, struct irb *irb)
static int tape_3590_crypt_error(struct tape_device *device,
struct tape_request *request, struct irb *irb)
{
u8 cu_rc, ekm_rc1;
u8 cu_rc;
u16 ekm_rc2;
u32 drv_rc;
const char *bus_id;
char *sense;
sense = ((struct tape_3590_sense *) irb->ecw)->fmt.data;
bus_id = dev_name(&device->cdev->dev);
cu_rc = sense[0];
drv_rc = *((u32*) &sense[5]) & 0xffffff;
ekm_rc1 = sense[9];
ekm_rc2 = *((u16*) &sense[10]);
if ((cu_rc == 0) && (ekm_rc2 == 0xee31))
/* key not defined on EKM */
......@@ -1429,7 +1422,6 @@ tape_3590_unit_check(struct tape_device *device, struct tape_request *request,
struct irb *irb)
{
struct tape_3590_sense *sense;
int rc;
#ifdef CONFIG_S390_TAPE_BLOCK
if (request->op == TO_BLOCK) {
......@@ -1454,7 +1446,6 @@ tape_3590_unit_check(struct tape_device *device, struct tape_request *request,
* - "break": basic error recovery is done
* - "goto out:": just print error message if available
*/
rc = -EIO;
switch (sense->rc_rqc) {
case 0x1110:
......
drivers/s390/char/tape_block.c 已删除 100644 → 0
浏览文件 @ 4637f40f
/*
* drivers/s390/char/tape_block.c
* block device frontend for tape device driver
*
* S390 and zSeries version
* Copyright (C) 2001,2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Carsten Otte <cotte@de.ibm.com>
* Tuan Ngo-Anh <ngoanh@de.ibm.com>
* Martin Schwidefsky <schwidefsky@de.ibm.com>
* Stefan Bader <shbader@de.ibm.com>
*/
#define KMSG_COMPONENT "tape"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/buffer_head.h>
#include <linux/kernel.h>
#include <asm/debug.h>
#define TAPE_DBF_AREA tape_core_dbf
#include "tape.h"
#define TAPEBLOCK_MAX_SEC 100
#define TAPEBLOCK_MIN_REQUEUE 3
/*
* 2003/11/25 Stefan Bader <shbader@de.ibm.com>
*
* In 2.5/2.6 the block device request function is very likely to be called
* with disabled interrupts (e.g. generic_unplug_device). So the driver can't
* just call any function that tries to allocate CCW requests from that con-
* text since it might sleep. There are two choices to work around this:
* a) do not allocate with kmalloc but use its own memory pool
* b) take requests from the queue outside that context, knowing that
* allocation might sleep
*/
/*
* file operation structure for tape block frontend
*/
static DEFINE_MUTEX(tape_block_mutex);
static int tapeblock_open(struct block_device *, fmode_t);
static int tapeblock_release(struct gendisk *, fmode_t);
static unsigned int tapeblock_check_events(struct gendisk *, unsigned int);
static int tapeblock_revalidate_disk(struct gendisk *);
static const struct block_device_operations tapeblock_fops = {
.owner = THIS_MODULE,
.open = tapeblock_open,
.release = tapeblock_release,
.check_events = tapeblock_check_events,
.revalidate_disk = tapeblock_revalidate_disk,
};
static int tapeblock_major = 0;
static void
tapeblock_trigger_requeue(struct tape_device *device)
{
/* Protect against rescheduling. */
if (atomic_cmpxchg(&device->blk_data.requeue_scheduled, 0, 1) != 0)
return;
schedule_work(&device->blk_data.requeue_task);
}
/*
* Post finished request.
*/
static void
__tapeblock_end_request(struct tape_request *ccw_req, void *data)
{
struct tape_device *device;
struct request *req;
DBF_LH(6, "__tapeblock_end_request()\n");
device = ccw_req->device;
req = (struct request *) data;
blk_end_request_all(req, (ccw_req->rc == 0) ? 0 : -EIO);
if (ccw_req->rc == 0)
/* Update position. */
device->blk_data.block_position =
(blk_rq_pos(req) + blk_rq_sectors(req)) >> TAPEBLOCK_HSEC_S2B;
else
/* We lost the position information due to an error. */
device->blk_data.block_position = -1;
device->discipline->free_bread(ccw_req);
if (!list_empty(&device->req_queue) ||
blk_peek_request(device->blk_data.request_queue))
tapeblock_trigger_requeue(device);
}
/*
* Feed the tape device CCW queue with requests supplied in a list.
*/
static int
tapeblock_start_request(struct tape_device *device, struct request *req)
{
struct tape_request * ccw_req;
int rc;
DBF_LH(6, "tapeblock_start_request(%p, %p)\n", device, req);
ccw_req = device->discipline->bread(device, req);
if (IS_ERR(ccw_req)) {
DBF_EVENT(1, "TBLOCK: bread failed\n");
blk_end_request_all(req, -EIO);
return PTR_ERR(ccw_req);
}
ccw_req->callback = __tapeblock_end_request;
ccw_req->callback_data = (void *) req;
ccw_req->retries = TAPEBLOCK_RETRIES;
rc = tape_do_io_async(device, ccw_req);
if (rc) {
/*
* Start/enqueueing failed. No retries in
* this case.
*/
blk_end_request_all(req, -EIO);
device->discipline->free_bread(ccw_req);
}
return rc;
}
/*
* Move requests from the block device request queue to the tape device ccw
* queue.
*/
static void
tapeblock_requeue(struct work_struct *work) {
struct tape_blk_data * blkdat;
struct tape_device * device;
struct request_queue * queue;
int nr_queued;
struct request * req;
struct list_head * l;
int rc;
blkdat = container_of(work, struct tape_blk_data, requeue_task);
device = blkdat->device;
if (!device)
return;
spin_lock_irq(get_ccwdev_lock(device->cdev));
queue = device->blk_data.request_queue;
/* Count number of requests on ccw queue. */
nr_queued = 0;
list_for_each(l, &device->req_queue)
nr_queued++;
spin_unlock(get_ccwdev_lock(device->cdev));
spin_lock_irq(&device->blk_data.request_queue_lock);
while (
blk_peek_request(queue) &&
nr_queued < TAPEBLOCK_MIN_REQUEUE
) {
req = blk_fetch_request(queue);
if (rq_data_dir(req) == WRITE) {
DBF_EVENT(1, "TBLOCK: Rejecting write request\n");
spin_unlock_irq(&device->blk_data.request_queue_lock);
blk_end_request_all(req, -EIO);
spin_lock_irq(&device->blk_data.request_queue_lock);
continue;
}
nr_queued++;
spin_unlock_irq(&device->blk_data.request_queue_lock);
rc = tapeblock_start_request(device, req);
spin_lock_irq(&device->blk_data.request_queue_lock);
}
spin_unlock_irq(&device->blk_data.request_queue_lock);
atomic_set(&device->blk_data.requeue_scheduled, 0);
}
/*
* Tape request queue function. Called from ll_rw_blk.c
*/
static void
tapeblock_request_fn(struct request_queue *queue)
{
struct tape_device *device;
device = (struct tape_device *) queue->queuedata;
DBF_LH(6, "tapeblock_request_fn(device=%p)\n", device);
BUG_ON(device == NULL);
tapeblock_trigger_requeue(device);
}
/*
* This function is called for every new tapedevice
*/
int
tapeblock_setup_device(struct tape_device * device)
{
struct tape_blk_data * blkdat;
struct gendisk * disk;
int rc;
blkdat = &device->blk_data;
blkdat->device = device;
spin_lock_init(&blkdat->request_queue_lock);
atomic_set(&blkdat->requeue_scheduled, 0);
blkdat->request_queue = blk_init_queue(
tapeblock_request_fn,
&blkdat->request_queue_lock
);
if (!blkdat->request_queue)
return -ENOMEM;
rc = elevator_change(blkdat->request_queue, "noop");
if (rc)
goto cleanup_queue;
blk_queue_logical_block_size(blkdat->request_queue, TAPEBLOCK_HSEC_SIZE);
blk_queue_max_hw_sectors(blkdat->request_queue, TAPEBLOCK_MAX_SEC);
blk_queue_max_segments(blkdat->request_queue, -1L);
blk_queue_max_segment_size(blkdat->request_queue, -1L);
blk_queue_segment_boundary(blkdat->request_queue, -1L);
disk = alloc_disk(1);
if (!disk) {
rc = -ENOMEM;
goto cleanup_queue;
}
disk->major = tapeblock_major;
disk->first_minor = device->first_minor;
disk->fops = &tapeblock_fops;
disk->private_data = tape_get_device(device);
disk->queue = blkdat->request_queue;
set_capacity(disk, 0);
sprintf(disk->disk_name, "btibm%d",
device->first_minor / TAPE_MINORS_PER_DEV);
blkdat->disk = disk;
blkdat->medium_changed = 1;
blkdat->request_queue->queuedata = tape_get_device(device);
add_disk(disk);
tape_get_device(device);
INIT_WORK(&blkdat->requeue_task, tapeblock_requeue);
return 0;
cleanup_queue:
blk_cleanup_queue(blkdat->request_queue);
blkdat->request_queue = NULL;
return rc;
}
void
tapeblock_cleanup_device(struct tape_device *device)
{
flush_work_sync(&device->blk_data.requeue_task);
tape_put_device(device);
if (!device->blk_data.disk) {
goto cleanup_queue;
}
del_gendisk(device->blk_data.disk);
device->blk_data.disk->private_data = NULL;
tape_put_device(device);
put_disk(device->blk_data.disk);
device->blk_data.disk = NULL;
cleanup_queue:
device->blk_data.request_queue->queuedata = NULL;
tape_put_device(device);
blk_cleanup_queue(device->blk_data.request_queue);
device->blk_data.request_queue = NULL;
}
/*
* Detect number of blocks of the tape.
* FIXME: can we extent this to detect the blocks size as well ?
*/
static int
tapeblock_revalidate_disk(struct gendisk *disk)
{
struct tape_device * device;
unsigned int nr_of_blks;
int rc;
device = (struct tape_device *) disk->private_data;
BUG_ON(!device);
if (!device->blk_data.medium_changed)
return 0;
rc = tape_mtop(device, MTFSFM, 1);
if (rc)
return rc;
rc = tape_mtop(device, MTTELL, 1);
if (rc < 0)
return rc;
pr_info("%s: Determining the size of the recorded area...\n",
dev_name(&device->cdev->dev));
DBF_LH(3, "Image file ends at %d\n", rc);
nr_of_blks = rc;
/* This will fail for the first file. Catch the error by checking the
* position. */
tape_mtop(device, MTBSF, 1);
rc = tape_mtop(device, MTTELL, 1);
if (rc < 0)
return rc;
if (rc > nr_of_blks)
return -EINVAL;
DBF_LH(3, "Image file starts at %d\n", rc);
device->bof = rc;
nr_of_blks -= rc;
pr_info("%s: The size of the recorded area is %i blocks\n",
dev_name(&device->cdev->dev), nr_of_blks);
set_capacity(device->blk_data.disk,
nr_of_blks*(TAPEBLOCK_HSEC_SIZE/512));
device->blk_data.block_position = 0;
device->blk_data.medium_changed = 0;
return 0;
}
static unsigned int
tapeblock_check_events(struct gendisk *disk, unsigned int clearing)
{
struct tape_device *device;
device = (struct tape_device *) disk->private_data;
DBF_LH(6, "tapeblock_medium_changed(%p) = %d\n",
device, device->blk_data.medium_changed);
return device->blk_data.medium_changed ? DISK_EVENT_MEDIA_CHANGE : 0;
}
/*
* Block frontend tape device open function.
*/
static int
tapeblock_open(struct block_device *bdev, fmode_t mode)
{
struct gendisk * disk = bdev->bd_disk;
struct tape_device * device;
int rc;
mutex_lock(&tape_block_mutex);
device = tape_get_device(disk->private_data);
if (device->required_tapemarks) {
DBF_EVENT(2, "TBLOCK: missing tapemarks\n");
pr_warning("%s: Opening the tape failed because of missing "
"end-of-file marks\n", dev_name(&device->cdev->dev));
rc = -EPERM;
goto put_device;
}
rc = tape_open(device);
if (rc)
goto put_device;
rc = tapeblock_revalidate_disk(disk);
if (rc)
goto release;
/*
* Note: The reference to <device> is hold until the release function
* is called.
*/
tape_state_set(device, TS_BLKUSE);
mutex_unlock(&tape_block_mutex);
return 0;
release:
tape_release(device);
put_device:
tape_put_device(device);
mutex_unlock(&tape_block_mutex);
return rc;
}
/*
* Block frontend tape device release function.
*
* Note: One reference to the tape device was made by the open function. So
* we just get the pointer here and release the reference.
*/
static int
tapeblock_release(struct gendisk *disk, fmode_t mode)
{
struct tape_device *device = disk->private_data;
mutex_lock(&tape_block_mutex);
tape_state_set(device, TS_IN_USE);
tape_release(device);
tape_put_device(device);
mutex_unlock(&tape_block_mutex);
return 0;
}
/*
* Initialize block device frontend.
*/
int
tapeblock_init(void)
{
int rc;
/* Register the tape major number to the kernel */
rc = register_blkdev(tapeblock_major, "tBLK");
if (rc < 0)
return rc;
if (tapeblock_major == 0)
tapeblock_major = rc;
return 0;
}
/*
* Deregister major for block device frontend
*/
void
tapeblock_exit(void)
{
unregister_blkdev(tapeblock_major, "tBLK");
}
drivers/s390/char/tape_std.c
浏览文件 @ 0d66cba1
......@@ -564,7 +564,6 @@ int
tape_std_mtreten(struct tape_device *device, int mt_count)
{
struct tape_request *request;
int rc;
request = tape_alloc_request(4, 0);
if (IS_ERR(request))
......@@ -576,7 +575,7 @@ tape_std_mtreten(struct tape_device *device, int mt_count)
tape_ccw_cc(request->cpaddr + 2, NOP, 0, NULL);
tape_ccw_end(request->cpaddr + 3, CCW_CMD_TIC, 0, request->cpaddr);
/* execute it, MTRETEN rc gets ignored */
rc = tape_do_io_interruptible(device, request);
tape_do_io_interruptible(device, request);
tape_free_request(request);
return tape_mtop(device, MTREW, 1);
}
......
drivers/s390/cio/chsc.c
浏览文件 @ 0d66cba1
......@@ -326,6 +326,36 @@ static void chsc_process_sei_res_acc(struct chsc_sei_area *sei_area)
s390_process_res_acc(&link);
}
static void chsc_process_sei_chp_avail(struct chsc_sei_area *sei_area)
{
struct channel_path *chp;
struct chp_id chpid;
u8 *data;
int num;
CIO_CRW_EVENT(4, "chsc: channel path availability information\n");
if (sei_area->rs != 0)
return;
data = sei_area->ccdf;
chp_id_init(&chpid);
for (num = 0; num <= __MAX_CHPID; num++) {
if (!chp_test_bit(data, num))
continue;
chpid.id = num;
CIO_CRW_EVENT(4, "Update information for channel path "
"%x.%02x\n", chpid.cssid, chpid.id);
chp = chpid_to_chp(chpid);
if (!chp) {
chp_new(chpid);
continue;
}
mutex_lock(&chp->lock);
chsc_determine_base_channel_path_desc(chpid, &chp->desc);
mutex_unlock(&chp->lock);
}
}
struct chp_config_data {
u8 map[32];
u8 op;
......@@ -376,9 +406,12 @@ static void chsc_process_sei(struct chsc_sei_area *sei_area)
case 1: /* link incident*/
chsc_process_sei_link_incident(sei_area);
break;
case 2: /* i/o resource accessibiliy */
case 2: /* i/o resource accessibility */
chsc_process_sei_res_acc(sei_area);
break;
case 7: /* channel-path-availability information */
chsc_process_sei_chp_avail(sei_area);
break;
case 8: /* channel-path-configuration notification */
chsc_process_sei_chp_config(sei_area);
break;
......
drivers/s390/cio/device_fsm.c
浏览文件 @ 0d66cba1
......@@ -408,9 +408,10 @@ ccw_device_done(struct ccw_device *cdev, int state)
CIO_MSG_EVENT(0, "Disconnected device %04x on subchannel "
"%04x\n", cdev->private->dev_id.devno,
sch->schid.sch_no);
if (ccw_device_notify(cdev, CIO_NO_PATH) != NOTIFY_OK)
if (ccw_device_notify(cdev, CIO_NO_PATH) != NOTIFY_OK) {
cdev->private->state = DEV_STATE_NOT_OPER;
ccw_device_sched_todo(cdev, CDEV_TODO_UNREG);
else
} else
ccw_device_set_disconnected(cdev);
cdev->private->flags.donotify = 0;
break;
......@@ -840,9 +841,6 @@ ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event)
static void
ccw_device_killing_irq(struct ccw_device *cdev, enum dev_event dev_event)
{
struct subchannel *sch;
sch = to_subchannel(cdev->dev.parent);
ccw_device_set_timeout(cdev, 0);
/* Start delayed path verification. */
ccw_device_online_verify(cdev, 0);
......
drivers/s390/cio/device_ops.c
浏览文件 @ 0d66cba1
......@@ -418,12 +418,9 @@ int ccw_device_resume(struct ccw_device *cdev)
int
ccw_device_call_handler(struct ccw_device *cdev)
{
struct subchannel *sch;
unsigned int stctl;
int ending_status;
sch = to_subchannel(cdev->dev.parent);
/*
* we allow for the device action handler if .
* - we received ending status
......
drivers/s390/cio/qdio_main.c
浏览文件 @ 0d66cba1
......@@ -1446,7 +1446,7 @@ static int handle_inbound(struct qdio_q *q, unsigned int callflags,
static int handle_outbound(struct qdio_q *q, unsigned int callflags,
int bufnr, int count)
{
unsigned char state;
unsigned char state = 0;
int used, rc = 0;
qperf_inc(q, outbound_call);
......
drivers/s390/crypto/ap_bus.c
浏览文件 @ 0d66cba1
......@@ -1183,8 +1183,12 @@ static void ap_scan_bus(struct work_struct *unused)
INIT_LIST_HEAD(&ap_dev->list);
setup_timer(&ap_dev->timeout, ap_request_timeout,
(unsigned long) ap_dev);
if (device_type == 0)
ap_probe_device_type(ap_dev);
if (device_type == 0) {
if (ap_probe_device_type(ap_dev)) {
kfree(ap_dev);
continue;
}
}
else
ap_dev->device_type = device_type;
......
include/asm-generic/pgtable.h
浏览文件 @ 0d66cba1
......@@ -184,22 +184,18 @@ static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b)
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif
#ifndef __HAVE_ARCH_PAGE_TEST_DIRTY
#define page_test_dirty(page) (0)
#ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY
#define page_test_and_clear_dirty(pfn, mapped) (0)
#endif
#ifndef __HAVE_ARCH_PAGE_CLEAR_DIRTY
#define page_clear_dirty(page, mapped) do { } while (0)
#endif
#ifndef __HAVE_ARCH_PAGE_TEST_DIRTY
#ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY
#define pte_maybe_dirty(pte) pte_dirty(pte)
#else
#define pte_maybe_dirty(pte) (1)
#endif
#ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG
#define page_test_and_clear_young(page) (0)
#define page_test_and_clear_young(pfn) (0)
#endif
#ifndef __HAVE_ARCH_PGD_OFFSET_GATE
......
include/linux/page-flags.h
浏览文件 @ 0d66cba1
......@@ -308,7 +308,7 @@ static inline void SetPageUptodate(struct page *page)
{
#ifdef CONFIG_S390
if (!test_and_set_bit(PG_uptodate, &page->flags))
page_clear_dirty(page, 0);
page_set_storage_key(page_to_pfn(page), PAGE_DEFAULT_KEY, 0);
#else
/*
* Memory barrier must be issued before setting the PG_uptodate bit,
......
mm/rmap.c
浏览文件 @ 0d66cba1
......@@ -719,7 +719,7 @@ int page_referenced(struct page *page,
unlock_page(page);
}
out:
if (page_test_and_clear_young(page))
if (page_test_and_clear_young(page_to_pfn(page)))
referenced++;
return referenced;
......@@ -785,10 +785,8 @@ int page_mkclean(struct page *page)
struct address_space *mapping = page_mapping(page);
if (mapping) {
ret = page_mkclean_file(mapping, page);
if (page_test_dirty(page)) {
page_clear_dirty(page, 1);
if (page_test_and_clear_dirty(page_to_pfn(page), 1))
ret = 1;
}
}
}
......@@ -981,10 +979,9 @@ void page_remove_rmap(struct page *page)
* not if it's in swapcache - there might be another pte slot
* containing the swap entry, but page not yet written to swap.
*/
if ((!PageAnon(page) || PageSwapCache(page)) && page_test_dirty(page)) {
page_clear_dirty(page, 1);
if ((!PageAnon(page) || PageSwapCache(page)) &&
page_test_and_clear_dirty(page_to_pfn(page), 1))
set_page_dirty(page);
}
/*
* Hugepages are not counted in NR_ANON_PAGES nor NR_FILE_MAPPED
* and not charged by memcg for now.
......
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