int prof_on __read_mostly;
EXPORT_SYMBOL_GPL(prof_on);
-static cpumask_t prof_cpu_mask = CPU_MASK_ALL;
+static cpumask_var_t prof_cpu_mask;
#ifdef CONFIG_SMP
static DEFINE_PER_CPU(struct profile_hit *[2], cpu_profile_hits);
static DEFINE_PER_CPU(int, cpu_profile_flip);
/* only text is profiled */
prof_len = (_etext - _stext) >> prof_shift;
buffer_bytes = prof_len*sizeof(atomic_t);
- if (!slab_is_available()) {
- prof_buffer = alloc_bootmem(buffer_bytes);
- return 0;
- }
+
+ if (!alloc_cpumask_var(&prof_cpu_mask, GFP_KERNEL))
+ return -ENOMEM;
+
+ cpumask_copy(prof_cpu_mask, cpu_possible_mask);
prof_buffer = kzalloc(buffer_bytes, GFP_KERNEL);
if (prof_buffer)
if (prof_buffer)
return 0;
+ free_cpumask_var(prof_cpu_mask);
return -ENOMEM;
}
node = cpu_to_node(cpu);
per_cpu(cpu_profile_flip, cpu) = 0;
if (!per_cpu(cpu_profile_hits, cpu)[1]) {
- page = alloc_pages_node(node,
+ page = alloc_pages_exact_node(node,
GFP_KERNEL | __GFP_ZERO,
0);
if (!page)
per_cpu(cpu_profile_hits, cpu)[1] = page_address(page);
}
if (!per_cpu(cpu_profile_hits, cpu)[0]) {
- page = alloc_pages_node(node,
+ page = alloc_pages_exact_node(node,
GFP_KERNEL | __GFP_ZERO,
0);
if (!page)
return NOTIFY_BAD;
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
- cpu_set(cpu, prof_cpu_mask);
+ if (prof_cpu_mask != NULL)
+ cpumask_set_cpu(cpu, prof_cpu_mask);
break;
case CPU_UP_CANCELED:
case CPU_UP_CANCELED_FROZEN:
case CPU_DEAD:
case CPU_DEAD_FROZEN:
- cpu_clear(cpu, prof_cpu_mask);
+ if (prof_cpu_mask != NULL)
+ cpumask_clear_cpu(cpu, prof_cpu_mask);
if (per_cpu(cpu_profile_hits, cpu)[0]) {
page = virt_to_page(per_cpu(cpu_profile_hits, cpu)[0]);
per_cpu(cpu_profile_hits, cpu)[0] = NULL;
if (type == CPU_PROFILING && timer_hook)
timer_hook(regs);
- if (!user_mode(regs) && cpu_isset(smp_processor_id(), prof_cpu_mask))
+ if (!user_mode(regs) && prof_cpu_mask != NULL &&
+ cpumask_test_cpu(smp_processor_id(), prof_cpu_mask))
profile_hit(type, (void *)profile_pc(regs));
}
#ifdef CONFIG_PROC_FS
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
-#include <asm/ptrace.h>
static int prof_cpu_mask_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
- int len = cpumask_scnprintf(page, count, (cpumask_t *)data);
+ int len = cpumask_scnprintf(page, count, data);
if (count - len < 2)
return -EINVAL;
len += sprintf(page + len, "\n");
static int prof_cpu_mask_write_proc(struct file *file,
const char __user *buffer, unsigned long count, void *data)
{
- cpumask_t *mask = (cpumask_t *)data;
+ struct cpumask *mask = data;
unsigned long full_count = count, err;
- cpumask_t new_value;
+ cpumask_var_t new_value;
- err = cpumask_parse_user(buffer, count, &new_value);
- if (err)
- return err;
+ if (!alloc_cpumask_var(&new_value, GFP_KERNEL))
+ return -ENOMEM;
- *mask = new_value;
- return full_count;
+ err = cpumask_parse_user(buffer, count, new_value);
+ if (!err) {
+ cpumask_copy(mask, new_value);
+ err = full_count;
+ }
+ free_cpumask_var(new_value);
+ return err;
}
void create_prof_cpu_mask(struct proc_dir_entry *root_irq_dir)
entry = create_proc_entry("prof_cpu_mask", 0600, root_irq_dir);
if (!entry)
return;
- entry->data = (void *)&prof_cpu_mask;
+ entry->data = prof_cpu_mask;
entry->read_proc = prof_cpu_mask_read_proc;
entry->write_proc = prof_cpu_mask_write_proc;
}
};
#ifdef CONFIG_SMP
-static inline void profile_nop(void *unused)
+static void profile_nop(void *unused)
{
}
int node = cpu_to_node(cpu);
struct page *page;
- page = alloc_pages_node(node,
+ page = alloc_pages_exact_node(node,
GFP_KERNEL | __GFP_ZERO | GFP_THISNODE,
0);
if (!page)
goto out_cleanup;
per_cpu(cpu_profile_hits, cpu)[1]
= (struct profile_hit *)page_address(page);
- page = alloc_pages_node(node,
+ page = alloc_pages_exact_node(node,
GFP_KERNEL | __GFP_ZERO | GFP_THISNODE,
0);
if (!page)