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| author | Yi-wei Zhao <gbjc64@motorola.com> | 2012-12-14 16:34:53 -0600 |
|---|---|---|
| committer | Simon Shields <keepcalm444@gmail.com> | 2016-06-13 14:47:39 +1000 |
| commit | eeaf4e63e771b8084bd2fecd58ec4430383e2ef5 (patch) | |
| tree | a1a2467b8dbafd2cac943bc10c6be856bf0899ac /drivers | |
| parent | 6f04da23b1e3aa60626bfef868ee89a77cebd637 (diff) | |
| download | kernel_samsung_smdk4412-eeaf4e63e771b8084bd2fecd58ec4430383e2ef5.tar.gz kernel_samsung_smdk4412-eeaf4e63e771b8084bd2fecd58ec4430383e2ef5.tar.bz2 kernel_samsung_smdk4412-eeaf4e63e771b8084bd2fecd58ec4430383e2ef5.zip | |
staging: android: lowmemorykiller: select a new task to kill
Under certain circumstances, a process may take time to handle a SIGKILL.
When lowmemkiller is called again shortly after, it would pick the same
process to kill over and over, so that we cann't get free memory for long time.
Solution is to check fatal_signal_pending() on the selected task, and if it's
already pending, select a new task to kill.
Cherry-pick 5e3358093351e5d48e21250e31896b855542f22c
Reviewed-on: http://gerrit.pcs.mot.com/479831
Change-Id: I53445114451ffaba293f3c7174fb0b01ed0d34b6
Signed-off-by: Tianshui Shi <kfp634@motorola.com>
Reviewed-on: http://gerrit.pcs.mot.com/505410
Tested-by: Jira Key <JIRAKEY@motorola.com>
Reviewed-by: Yi-Wei Zhao <gbjc64@motorola.com>
Reviewed-by: Jason Hrycay <jason.hrycay@motorola.com>
Reviewed-by: Jeffrey Carlyle <jeff.carlyle@motorola.com>
(cherry picked from commit da093001caf06ed2296b4f79c84cc48ce713eac6)
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/android/lowmemorykiller.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c index 754057c4079..a0731afce3f 100644 --- a/drivers/staging/android/lowmemorykiller.c +++ b/drivers/staging/android/lowmemorykiller.c @@ -219,6 +219,11 @@ static int lowmem_shrink(struct shrinker *s, struct shrink_control *sc) continue; #endif } + if (fatal_signal_pending(p)) { + lowmem_print(2, "skip slow dying process %d\n", p->pid); + task_unlock(p); + continue; + } tasksize = get_mm_rss(p->mm); task_unlock(p); if (tasksize <= 0) |