Messages in this thread Patch in this message | | | From | Hongjie Fang (方洪杰) <> | Subject | [PATCH 4.3-rc6] proc: fix oom_adj value read from /proc/<pid>/oom_adj | Date | Tue, 20 Oct 2015 12:34:36 +0000 |
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The oom_adj's value reading through /proc/<pid>/oom_adj is different with the value written into /proc/<pid>/oom_adj. Fix this by adding a adjustment factor.
Signed-off-by: Hongjie Fang <hongjie.fang@spreadtrum.com> --- diff --git a/fs/proc/base.c b/fs/proc/base.c index b25eee4..1ea0589 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1043,6 +1043,7 @@ static ssize_t oom_adj_write(struct file *file, const char __user *buf, int oom_adj; unsigned long flags; int err; + int adjust; memset(buffer, 0, sizeof(buffer)); if (count > sizeof(buffer) - 1) @@ -1084,8 +1085,10 @@ static ssize_t oom_adj_write(struct file *file, const char __user *buf, */ if (oom_adj == OOM_ADJUST_MAX) oom_adj = OOM_SCORE_ADJ_MAX; - else - oom_adj = (oom_adj * OOM_SCORE_ADJ_MAX) / -OOM_DISABLE; + else{ + adjust = oom_adj > 0 ? (-OOM_DISABLE-1) : -(-OOM_DISABLE-1); + oom_adj = (oom_adj * OOM_SCORE_ADJ_MAX + adjust) / -OOM_DISABLE; + } if (oom_adj < task->signal->oom_score_adj && !capable(CAP_SYS_RESOURCE)) { --
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