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| author | David Rientjes <rientjes@google.com> | 2010-08-09 17:19:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-09 20:45:02 -0700 |
| commit | 51b1bd2ace1595b72956224deda349efa880b693 (patch) | |
| tree | 82732bb33d26379c05494dcdba8ea390ae0621db /fs/proc | |
| parent | a63d83f427fbce97a6cea0db2e64b0eb8435cd10 (diff) | |
| download | linux-stable-51b1bd2ace1595b72956224deda349efa880b693.tar.gz linux-stable-51b1bd2ace1595b72956224deda349efa880b693.tar.bz2 linux-stable-51b1bd2ace1595b72956224deda349efa880b693.zip | |
oom: deprecate oom_adj tunable
/proc/pid/oom_adj is now deprecated so that that it may eventually be
removed. The target date for removal is August 2012.
A warning will be printed to the kernel log if a task attempts to use this
interface. Future warning will be suppressed until the kernel is rebooted
to prevent spamming the kernel log.
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/base.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index f923b728388a..69254a365ce2 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1037,6 +1037,14 @@ static ssize_t oom_adjust_write(struct file *file, const char __user *buf, return -EACCES; } + /* + * Warn that /proc/pid/oom_adj is deprecated, see + * Documentation/feature-removal-schedule.txt. + */ + printk_once(KERN_WARNING "%s (%d): /proc/%d/oom_adj is deprecated, " + "please use /proc/%d/oom_score_adj instead.\n", + current->comm, task_pid_nr(current), + task_pid_nr(task), task_pid_nr(task)); task->signal->oom_adj = oom_adjust; /* * Scale /proc/pid/oom_score_adj appropriately ensuring that a maximum |