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Merge branch 'linus' into sched/core

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Conflicts:
	fs/proc/array.c

Merge reason: resolve conflict and queue up dependent patch.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
2009-10-25 17:30:53 +01:00
parent cf82ff7ea7 964fe080d9
commit 0b9e31e926
5200 changed files with 413826 additions and 140103 deletions
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92
fs/proc/array.c
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@@ -82,6 +82,7 @@
#include <linux/pid_namespace.h>
#include <linux/ptrace.h>
#include <linux/tracehook.h>
#include <linux/swapops.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
@@ -321,6 +322,94 @@ static inline void task_context_switch_counts(struct seq_file *m,
p->nivcsw);
}
#ifdef CONFIG_MMU
struct stack_stats {
struct vm_area_struct *vma;
unsigned long startpage;
unsigned long usage;
};
static int stack_usage_pte_range(pmd_t *pmd, unsigned long addr,
unsigned long end, struct mm_walk *walk)
{
struct stack_stats *ss = walk->private;
struct vm_area_struct *vma = ss->vma;
pte_t *pte, ptent;
spinlock_t *ptl;
int ret = 0;
pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
for (; addr != end; pte++, addr += PAGE_SIZE) {
ptent = *pte;
#ifdef CONFIG_STACK_GROWSUP
if (pte_present(ptent) || is_swap_pte(ptent))
ss->usage = addr - ss->startpage + PAGE_SIZE;
#else
if (pte_present(ptent) || is_swap_pte(ptent)) {
ss->usage = ss->startpage - addr + PAGE_SIZE;
pte++;
ret = 1;
break;
}
#endif
}
pte_unmap_unlock(pte - 1, ptl);
cond_resched();
return ret;
}
static inline unsigned long get_stack_usage_in_bytes(struct vm_area_struct *vma,
struct task_struct *task)
{
struct stack_stats ss;
struct mm_walk stack_walk = {
.pmd_entry = stack_usage_pte_range,
.mm = vma->vm_mm,
.private = &ss,
};
if (!vma->vm_mm || is_vm_hugetlb_page(vma))
return 0;
ss.vma = vma;
ss.startpage = task->stack_start & PAGE_MASK;
ss.usage = 0;
#ifdef CONFIG_STACK_GROWSUP
walk_page_range(KSTK_ESP(task) & PAGE_MASK, vma->vm_end,
&stack_walk);
#else
walk_page_range(vma->vm_start, (KSTK_ESP(task) & PAGE_MASK) + PAGE_SIZE,
&stack_walk);
#endif
return ss.usage;
}
static inline void task_show_stack_usage(struct seq_file *m,
struct task_struct *task)
{
struct vm_area_struct *vma;
struct mm_struct *mm = get_task_mm(task);
if (mm) {
down_read(&mm->mmap_sem);
vma = find_vma(mm, task->stack_start);
if (vma)
seq_printf(m, "Stack usage:\t%lu kB\n",
get_stack_usage_in_bytes(vma, task) >> 10);
up_read(&mm->mmap_sem);
mmput(mm);
}
}
#else
static void task_show_stack_usage(struct seq_file *m, struct task_struct *task)
{
}
#endif /* CONFIG_MMU */
static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
{
seq_printf(m, "Cpus_allowed:\t");
@@ -351,6 +440,7 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
task_show_regs(m, task);
#endif
task_context_switch_counts(m, task);
task_show_stack_usage(m, task);
return 0;
}
@@ -492,7 +582,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
rsslim,
mm ? mm->start_code : 0,
mm ? mm->end_code : 0,
(permitted && mm) ? mm->start_stack : 0,
(permitted) ? task->stack_start : 0,
esp,
eip,
/* The signal information here is obsolete.