- 16 12月, 2006 1 次提交
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由 Linus Torvalds 提交于
It has caused more problems than it ever really solved, and is apparently not getting cleaned up and fixed. We can put it back when it's stable and isn't likely to make warning or bug events worse. In the meantime, enable frame pointers for more readable stack traces. Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 12 12月, 2006 1 次提交
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由 Brice Goglin 提交于
Fix typo in 'EXPERIMENTAL' in config CC_STACKPROTECTOR in arch/x86_64/Kconfig. Signed-off-by: NBrice Goglin <brice@myri.com> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 11 12月, 2006 1 次提交
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Cc: Andi Kleen <ak@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: David Howells <dhowells@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 10 12月, 2006 3 次提交
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由 Andi Kleen 提交于
The new PDA code uses a dummy _proxy_pda variable to describe memory references to the PDA. It is never referenced in inline assembly, but exists as input/output arguments. gcc 4.2 in some cases can CSE references to this which causes unresolved symbols. Define it to zero to avoid this. Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Ravikiran G Thirumalai 提交于
2.6.19 stopped booting (or booted based on build/config) on our x86_64 systems due to a bug introduced in 2.6.19. check_nmi_watchdog schedules an IPI on all cpus to busy wait on a flag, but fails to set the busywait flag if NMI functionality is disabled. This causes the secondary cpus to spin in an endless loop, causing the kernel bootup to hang. Depending upon the build, the busywait flag got overwritten (stack variable) and caused the kernel to bootup on certain builds. Following patch fixes the bug by setting the busywait flag before returning from check_nmi_watchdog. I guess using a stack variable is not good here as the calling function could potentially return while the busy wait loop is still spinning on the flag. AK: I redid the patch significantly to be cleaner Signed-off-by: NRavikiran Thirumalai <kiran@scalex86.org> Signed-off-by: NShai Fultheim <shai@scalex86.org> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Andi Kleen 提交于
Signed-off-by: NAndi Kleen <ak@suse.de>
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- 09 12月, 2006 3 次提交
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由 David Howells 提交于
This facility provides three entry points: ilog2() Log base 2 of unsigned long ilog2_u32() Log base 2 of u32 ilog2_u64() Log base 2 of u64 These facilities can either be used inside functions on dynamic data: int do_something(long q) { ...; y = ilog2(x) ...; } Or can be used to statically initialise global variables with constant values: unsigned n = ilog2(27); When performing static initialisation, the compiler will report "error: initializer element is not constant" if asked to take a log of zero or of something not reducible to a constant. They treat negative numbers as unsigned. When not dealing with a constant, they fall back to using fls() which permits them to use arch-specific log calculation instructions - such as BSR on x86/x86_64 or SCAN on FRV - if available. [akpm@osdl.org: MMC fix] Signed-off-by: NDavid Howells <dhowells@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: David Howells <dhowells@redhat.com> Cc: Wojtek Kaniewski <wojtekka@toxygen.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Josef "Jeff" Sipek 提交于
Change all the uses of f_{dentry,vfsmnt} to f_path.{dentry,mnt} in the x86_64 arch code. Signed-off-by: NJosef "Jeff" Sipek <jsipek@cs.sunysb.edu> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Jeremy Fitzhardinge 提交于
This makes x86-64 use the generic BUG machinery. The main advantage in using the generic BUG machinery for x86-64 is that the inlined overhead of BUG is just the ud2a instruction; the file+line information are no longer inlined into the instruction stream. This reduces cache pollution. Signed-off-by: NJeremy Fitzhardinge <jeremy@goop.org> Cc: Andi Kleen <ak@muc.de> Cc: Hugh Dickens <hugh@veritas.com> Cc: Michael Ellerman <michael@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 08 12月, 2006 8 次提交
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由 Magnus Damm 提交于
The elf note saving code is currently duplicated over several architectures. This cleanup patch simply adds code to a common file and then replaces the arch-specific code with calls to the newly added code. The only drawback with this approach is that s390 doesn't fully support kexec-on-panic which for that arch leads to introduction of unused code. Signed-off-by: NMagnus Damm <magnus@valinux.co.jp> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: Andi Kleen <ak@suse.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ingo Molnar 提交于
There was lots of #ifdef noise in the kernel due to hotcpu_notifier(fn, prio) not correctly marking 'fn' as used in the !HOTPLUG_CPU case, and thus generating compiler warnings of unused symbols, hence forcing people to add #ifdefs. the compiler can skip truly unused functions just fine: text data bss dec hex filename 1624412 728710 3674856 6027978 5bfaca vmlinux.before 1624412 728710 3674856 6027978 5bfaca vmlinux.after [akpm@osdl.org: topology.c fix] Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Andrew Morton 提交于
smp_call_function_single() can deadlock if the caller disabled local interrupts (the target CPU could be spinning on call_lock). Check for that. Why on earth do these functions use spin_lock_bh()?? Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Masami Hiramatsu 提交于
When we are unregistering a kprobe-booster, we can't release its instruction buffer immediately on the preemptive kernel, because some processes might be preempted on the buffer. The freeze_processes() and thaw_processes() functions can clean most of processes up from the buffer. There are still some non-frozen threads who have the PF_NOFREEZE flag. If those threads are sleeping (not preempted) at the known place outside the buffer, we can ensure safety of freeing. However, the processing of this check routine takes a long time. So, this patch introduces the garbage collection mechanism of insn_slot. It also introduces the "dirty" flag to free_insn_slot because of efficiency. The "clean" instruction slots (dirty flag is cleared) are released immediately. But the "dirty" slots which are used by boosted kprobes, are marked as garbages. collect_garbage_slots() will be invoked to release "dirty" slots if there are more than INSNS_PER_PAGE garbage slots or if there are no unused slots. Cc: "Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: "bibo,mao" <bibo.mao@intel.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Yumiko Sugita <yumiko.sugita.yf@hitachi.com> Cc: Satoshi Oshima <soshima@redhat.com> Cc: Hideo Aoki <haoki@redhat.com> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Magnus Damm 提交于
Define elf_addr_t in linux/elf.h. The size of the type is determined using ELF_CLASS. This allows us to remove the defines that today are spread all over .c and .h files. Signed-off-by: NMagnus Damm <magnus@valinux.co.jp> Cc: Daniel Jacobowitz <drow@false.org> Cc: Roland McGrath <roland@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Henry Nestler 提交于
After LOADER_TYPE && INITRD_START are true, the short if-condition for INITRD_START can never be false. Remove unused code from the else condition. Signed-off-by: NHenry Nestler <henry.ne@arcor.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Arnd Bergmann 提交于
The last thing we agreed on was to remove the macros entirely for 2.6.19, on all architectures. Unfortunately, I think nobody actually _did_ that, so they are still there. [akpm@osdl.org: x86_64 fix] Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg Schafer <gschafer@zip.com.au> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
SLAB_KERNEL is an alias of GFP_KERNEL. Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 07 12月, 2006 23 次提交
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由 Andi Kleen 提交于
smp_call_function() is exported, makes sense to export this one too. Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Jan Beulich 提交于
The .eh_frame section contents is never written to, so it can as well benefit from CONFIG_DEBUG_RODATA. Diff-ed against firstfloor tree. Signed-off-by: NJan Beulich <jbeulich@novell.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Yinghai Lu 提交于
setup_IO_APIC_irqs could fail to get vector for some device when you have too many devices, because at that time only boot cpu is online. So check vector for irq in setup_ioapic_dest and call setup_IO_APIC_irq to make sure IO-APIC irq-routing table is initialized. Also seperate setup_IO_APIC_irq from setup_IO_APIC_irqs. Signed-off-by: NYinghai Lu <yinghai.lu@amd.com> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@osdl.org>
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由 Andi Kleen 提交于
- Remove "Disabling IOMMU" message because it confuses people - Clarify that the GART IOMMU is refered to in other message Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Venkatesh Pallipadi 提交于
Idle callbacks has some races when enter_idle() sets isidle and subsequent interrupts that can happen on that CPU, before CPU goes to idle. Due to this, an IDLE_END can get called before IDLE_START. To avoid these races, disable interrupts before enter_idle and make sure that all idle routines do not enable interrupts before entering idle. Note that poll_idle() still has a this race as it has to enable interrupts before going to idle. But, all other idle routines have the race fixed. Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Andi Kleen 提交于
This was added as a workaround for the fallback unwinder not supporting unaligned stack pointers properly. But now it was fixed to do that, so it's not needed anymore Cc: mingo@elte.hu Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Jan Beulich 提交于
Tighten the requirements on both input to and output from the Dwarf2 unwinder. Signed-off-by: NJan Beulich <jbeulich@novell.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Andi Kleen 提交于
We're already well protected against module unloads because module unload uses stop_machine(). The only exception is NMIs, but other users already risk lockless accesses here. This avoids some hackery in lockdep and also a potential deadlock This matches what i386 does. Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Arjan van de Ven 提交于
On the Core2 cpus, the rdtsc instruction is not serializing (as defined in the architecture reference since rdtsc exists) and due to the deep speculation of these cores, it's possible that you can observe time go backwards between cores due to this speculation. Since the kernel already deals with this with the SYNC_RDTSC flag, the solution is simple, only assume that the instruction is serializing on family 15... The price one pays for this is a slightly slower gettimeofday (by a dozen or two cycles), but that increase is quite small to pay for a really-going-forward tsc counter. Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Muli Ben-Yehuda 提交于
Spotted by d binderman <dcb314@hotmail.com>. Signed-off-by: NMuli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Andi Kleen 提交于
There is no guarantee that two RDTSCs in a row are monotonic, so don't assume it on single core AMD systems. This will make gettimeofday slower again Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Yinghai Lu 提交于
remove unused acpi_found_madt in mparse.c Signed-off-by: NYinghai Lu <yinghai.lu@amd.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Rafael J. Wysocki 提交于
Make mce_remove_device() clean up the kobject in per_cpu(device_mce, cpu) after it has been unregistered. Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Adrian Bunk 提交于
One ARCH_DISCONTIGMEM_ENABLE option is enough. Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Yinghai Lu 提交于
interrupt array is referred for idt vectors instead of NR_IRQS, so change size to NR_VECTORS - FIRST_EXTERNAL_VECTOR. Also change to static. Signed-off-by: NYinghai Lu <yinghai@amd.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Yinghai Lu 提交于
idt_table is in the .bss section, so clear_bss need to called at first Signed-off-by: NYinghai Lu <yinghai.lu@amd.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Chuck Ebbert 提交于
Add sysctl for kstack_depth_to_print. This lets users change the amount of raw stack data printed in dump_stack() without having to reboot. Signed-off-by: NChuck Ebbert <76306.1226@compuserve.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 David Rientjes 提交于
Remove unused GET_APIC_VERSION call from clear_local_APIC() and __setup_APIC_LVTT(). Reported by D Binderman <dcb314@hotmail.com>. Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: NDavid Rientjes <rientjes@cs.washington.edu> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Karsten Wiese 提交于
Read/Write APIC_LVTPC and APIC_LVTTHMR only, if get_maxlvt() returns certain values. This is done like everywhere else in i386/kernel/apic.c, so I guess its correct. Suspends/Resumes to disk fine and eleminates an smp_error_interrupt() here on a K8. AK: ported to x86-64 too Signed-off-by: NKarsten Wiese <fzu@wemgehoertderstaat.de> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Stephane Eranian 提交于
Here is a small patch for x86-64 which adds a cpufeature flag and detection code for Intel's Branch Trace Store (BTS) feature. This feature can be found on Intel P4 and Core 2 processors among others. It can also be used by perfmon. changelog: - add CPU_FEATURE_BTS - add Branch Trace Store detection signed-off-by: Nstephane eranian <eranian@hpl.hp.com> Signed-off-by: NAndi Kleen <ak@suse.de>
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由 Siddha, Suresh B 提交于
Move the irqbalance quirks for E7320/E7520/E7525(Errata 23 in http://download.intel.com/design/chipsets/specupdt/30304203.pdf) to early quirks. And add a PCI quirk for these platforms to check(which happens very late during the boot) if the APIC routing is indeed set to default flat mode. This fixes the breakage(in x86_64) of this quirk due to cpu hotplug which selects physical mode instead of the logical flat(as needed for this errata workaround). Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Li, Shaohua" <shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org>
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由 Siddha, Suresh B 提交于
Add genapic_force. Used by the next Intel quirks patch. Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NAndi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Li, Shaohua" <shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org>
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由 Andi Kleen 提交于
Signed-off-by: NAndi Kleen <ak@suse.de>
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