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| author | Oleg Nesterov <oleg@redhat.com> | 2010-05-26 14:43:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-27 09:12:47 -0700 |
| commit | 5089a9768041206c76fac299ccd82a528c24c254 (patch) | |
| tree | 88c7951ab137bc04db3ca02ef8bfeef2536472e2 /kernel/sched_debug.c | |
| parent | 7e49827cc937a742ae02078b483e3eb78f791a2a (diff) | |
| download | lwn-5089a9768041206c76fac299ccd82a528c24c254.tar.gz lwn-5089a9768041206c76fac299ccd82a528c24c254.zip | |
proc_sched_show_task(): use get_nr_threads()
Trivial, use get_nr_threads() helper to read signal->count which we are
going to change.
Like other callers, proc_sched_show_task() doesn't need the exactly
precise nr_threads.
David said:
: Note that get_nr_threads() isn't completely equivalent (it can return 0
: where proc_sched_show_task() will display a 1). But I don't think this
: should be a problem.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sched_debug.c')
| -rw-r--r-- | kernel/sched_debug.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c index 87a330a7185f..35565395d00d 100644 --- a/kernel/sched_debug.c +++ b/kernel/sched_debug.c @@ -381,15 +381,9 @@ __initcall(init_sched_debug_procfs); void proc_sched_show_task(struct task_struct *p, struct seq_file *m) { unsigned long nr_switches; - unsigned long flags; - int num_threads = 1; - - if (lock_task_sighand(p, &flags)) { - num_threads = atomic_read(&p->signal->count); - unlock_task_sighand(p, &flags); - } - SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid, num_threads); + SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid, + get_nr_threads(p)); SEQ_printf(m, "---------------------------------------------------------\n"); #define __P(F) \ |