提交 3eb3963f 编写于 作者: I Ingo Molnar

Merge branch 'cpus4096' into core/percpu

Conflicts:
	arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
	arch/x86/kernel/tlb_32.c

Merge it here because both the cpumask changes and the ongoing percpu
work is touching the TLB code. The percpu changes take precedence, as
they eliminate tlb_32.c altogether.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
......@@ -84,7 +84,7 @@ void build_cpu_to_node_map(void);
.child = NULL, \
.groups = NULL, \
.min_interval = 8, \
.max_interval = 8*(min(num_online_cpus(), 32)), \
.max_interval = 8*(min(num_online_cpus(), 32U)), \
.busy_factor = 64, \
.imbalance_pct = 125, \
.cache_nice_tries = 2, \
......
......@@ -190,9 +190,20 @@ extern int __node_distance(int, int);
#else /* !CONFIG_NUMA */
#define numa_node_id() 0
#define cpu_to_node(cpu) 0
#define early_cpu_to_node(cpu) 0
static inline int numa_node_id(void)
{
return 0;
}
static inline int cpu_to_node(int cpu)
{
return 0;
}
static inline int early_cpu_to_node(int cpu)
{
return 0;
}
static inline const cpumask_t *cpumask_of_node(int node)
{
......
......@@ -1844,6 +1844,11 @@ void __cpuinit generic_processor_info(int apicid, int version)
num_processors++;
cpu = cpumask_next_zero(-1, cpu_present_mask);
if (version != apic_version[boot_cpu_physical_apicid])
WARN_ONCE(1,
"ACPI: apic version mismatch, bootcpu: %x cpu %d: %x\n",
apic_version[boot_cpu_physical_apicid], cpu, version);
physid_set(apicid, phys_cpu_present_map);
if (apicid == boot_cpu_physical_apicid) {
/*
......
......@@ -145,13 +145,14 @@ typedef union {
struct drv_cmd {
unsigned int type;
cpumask_var_t mask;
const struct cpumask *mask;
drv_addr_union addr;
u32 val;
};
static void do_drv_read(struct drv_cmd *cmd)
static long do_drv_read(void *_cmd)
{
struct drv_cmd *cmd = _cmd;
u32 h;
switch (cmd->type) {
......@@ -166,10 +167,12 @@ static void do_drv_read(struct drv_cmd *cmd)
default:
break;
}
return 0;
}
static void do_drv_write(struct drv_cmd *cmd)
static long do_drv_write(void *_cmd)
{
struct drv_cmd *cmd = _cmd;
u32 lo, hi;
switch (cmd->type) {
......@@ -186,30 +189,23 @@ static void do_drv_write(struct drv_cmd *cmd)
default:
break;
}
return 0;
}
static void drv_read(struct drv_cmd *cmd)
{
cpumask_t saved_mask = current->cpus_allowed;
cmd->val = 0;
set_cpus_allowed_ptr(current, cmd->mask);
do_drv_read(cmd);
set_cpus_allowed_ptr(current, &saved_mask);
work_on_cpu(cpumask_any(cmd->mask), do_drv_read, cmd);
}
static void drv_write(struct drv_cmd *cmd)
{
cpumask_t saved_mask = current->cpus_allowed;
unsigned int i;
for_each_cpu(i, cmd->mask) {
set_cpus_allowed_ptr(current, cpumask_of(i));
do_drv_write(cmd);
work_on_cpu(i, do_drv_write, cmd);
}
set_cpus_allowed_ptr(current, &saved_mask);
return;
}
static u32 get_cur_val(const struct cpumask *mask)
......@@ -235,6 +231,7 @@ static u32 get_cur_val(const struct cpumask *mask)
return 0;
}
cmd.mask = mask;
drv_read(&cmd);
dprintk("get_cur_val = %u\n", cmd.val);
......@@ -366,7 +363,7 @@ static unsigned int get_cur_freq_on_cpu(unsigned int cpu)
return freq;
}
static unsigned int check_freqs(const cpumask_t *mask, unsigned int freq,
static unsigned int check_freqs(const struct cpumask *mask, unsigned int freq,
struct acpi_cpufreq_data *data)
{
unsigned int cur_freq;
......@@ -401,9 +398,6 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
return -ENODEV;
}
if (unlikely(!alloc_cpumask_var(&cmd.mask, GFP_KERNEL)))
return -ENOMEM;
perf = data->acpi_data;
result = cpufreq_frequency_table_target(policy,
data->freq_table,
......@@ -448,9 +442,9 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
/* cpufreq holds the hotplug lock, so we are safe from here on */
if (policy->shared_type != CPUFREQ_SHARED_TYPE_ANY)
cpumask_and(cmd.mask, cpu_online_mask, policy->cpus);
cmd.mask = policy->cpus;
else
cpumask_copy(cmd.mask, cpumask_of(policy->cpu));
cmd.mask = cpumask_of(policy->cpu);
freqs.old = perf->states[perf->state].core_frequency * 1000;
freqs.new = data->freq_table[next_state].frequency;
......@@ -477,7 +471,6 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
perf->state = next_perf_state;
out:
free_cpumask_var(cmd.mask);
return result;
}
......
......@@ -971,6 +971,8 @@ static int __devinit workqueue_cpu_callback(struct notifier_block *nfb,
}
#ifdef CONFIG_SMP
static struct workqueue_struct *work_on_cpu_wq __read_mostly;
struct work_for_cpu {
struct work_struct work;
long (*fn)(void *);
......@@ -991,8 +993,8 @@ static void do_work_for_cpu(struct work_struct *w)
* @fn: the function to run
* @arg: the function arg
*
* This will return -EINVAL in the cpu is not online, or the return value
* of @fn otherwise.
* This will return the value @fn returns.
* It is up to the caller to ensure that the cpu doesn't go offline.
*/
long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
{
......@@ -1001,14 +1003,8 @@ long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
INIT_WORK(&wfc.work, do_work_for_cpu);
wfc.fn = fn;
wfc.arg = arg;
get_online_cpus();
if (unlikely(!cpu_online(cpu)))
wfc.ret = -EINVAL;
else {
schedule_work_on(cpu, &wfc.work);
flush_work(&wfc.work);
}
put_online_cpus();
queue_work_on(cpu, work_on_cpu_wq, &wfc.work);
flush_work(&wfc.work);
return wfc.ret;
}
......@@ -1025,4 +1021,8 @@ void __init init_workqueues(void)
hotcpu_notifier(workqueue_cpu_callback, 0);
keventd_wq = create_workqueue("events");
BUG_ON(!keventd_wq);
#ifdef CONFIG_SMP
work_on_cpu_wq = create_workqueue("work_on_cpu");
BUG_ON(!work_on_cpu_wq);
#endif
}
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