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| author |   David Rientjes <rientjes@google.com> | 2010-08-09 17:18:46 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-09 20:44:56 -0700 |
| commit | 74ab7f1d3f22ccb02f8b14f1f2375416b1ab0adb (patch) | |
| tree | 94f7e6b0e77fe11f200941f97d1fc895dc950fde /mm/oom_kill.c | |
| parent | oom: dump_tasks use find_lock_task_mm too (diff) | |
| download | linux-dev-74ab7f1d3f22ccb02f8b14f1f2375416b1ab0adb.tar.xz linux-dev-74ab7f1d3f22ccb02f8b14f1f2375416b1ab0adb.zip | |
oom: improve commentary in dump_tasks()
The comments in dump_tasks() should be updated to be more clear about why
tasks are filtered and how they are filtered by its argument.
An unnecessary comment concerning a check for is_global_init() is removed
since it isn't of importance.
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/oom_kill.c')
| -rw-r--r-- | mm/oom_kill.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 5285da9a9c1a..ef4ed4ae6f64 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -323,7 +323,7 @@ static struct task_struct *select_bad_process(unsigned long *ppoints, /** * dump_tasks - dump current memory state of all system tasks - * @mem: target memory controller + * @mem: current's memory controller, if constrained * * Dumps the current memory state of all system tasks, excluding kernel threads. * State information includes task's pid, uid, tgid, vm size, rss, cpu, oom_adj @@ -342,11 +342,6 @@ static void dump_tasks(const struct mem_cgroup *mem) printk(KERN_INFO "[ pid ] uid tgid total_vm rss cpu oom_adj " "name\n"); for_each_process(p) { - /* - * We don't have is_global_init() check here, because the old - * code do that. printing init process is not big matter. But - * we don't hope to make unnecessary compatibility breaking. - */ if (p->flags & PF_KTHREAD) continue; if (mem && !task_in_mem_cgroup(p, mem)) @@ -355,8 +350,8 @@ static void dump_tasks(const struct mem_cgroup *mem) task = find_lock_task_mm(p); if (!task) { /* - * Probably oom vs task-exiting race was happen and ->mm - * have been detached. thus there's no need to report + * This is a kthread or all of p's threads have already + * detached their mm's. There's no need to report * them; they can't be oom killed anyway. */ continue; |