From: Andrey Grodzovsky andrey.grodzovsky@amd.com
Try to make better decisions which process to kill based on per file RSS.
Signed-off-by: Andrey Grodzovsky andrey.grodzovsky@amd.com --- mm/oom_kill.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 3c6cf9e3cd66..76a5ea73eb6a 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -18,6 +18,7 @@ * kernel subsystems and hints as to where to find out what things do. */
+#include <linux/fdtable.h> #include <linux/oom.h> #include <linux/mm.h> #include <linux/err.h> @@ -228,7 +229,8 @@ long oom_badness(struct task_struct *p, unsigned long totalpages) * task's rss, pagetable and swap space use. */ points = get_mm_rss(p->mm) + get_mm_counter(p->mm, MM_SWAPENTS) + - mm_pgtables_bytes(p->mm) / PAGE_SIZE; + files_rss(p->files) + mm_pgtables_bytes(p->mm) / PAGE_SIZE; + task_unlock(p);
/* Normalize to oom_score_adj units */ @@ -401,8 +403,8 @@ static int dump_task(struct task_struct *p, void *arg)
pr_info("[%7d] %5d %5d %8lu %8lu %8ld %8lu %5hd %s\n", task->pid, from_kuid(&init_user_ns, task_uid(task)), - task->tgid, task->mm->total_vm, get_mm_rss(task->mm), - mm_pgtables_bytes(task->mm), + task->tgid, task->mm->total_vm, get_mm_rss(task->mm) + + files_rss(task->files), mm_pgtables_bytes(task->mm), get_mm_counter(task->mm, MM_SWAPENTS), task->signal->oom_score_adj, task->comm); task_unlock(task); @@ -594,7 +596,8 @@ static bool oom_reap_task_mm(struct task_struct *tsk, struct mm_struct *mm) pr_info("oom_reaper: reaped process %d (%s), now anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB\n", task_pid_nr(tsk), tsk->comm, K(get_mm_counter(mm, MM_ANONPAGES)), - K(get_mm_counter(mm, MM_FILEPAGES)), + K(get_mm_counter(mm, MM_FILEPAGES) + + files_rss(tsk->files)), K(get_mm_counter(mm, MM_SHMEMPAGES))); out_finish: trace_finish_task_reaping(tsk->pid); @@ -950,7 +953,7 @@ static void __oom_kill_process(struct task_struct *victim, const char *message) pr_err("%s: Killed process %d (%s) total-vm:%lukB, anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB, UID:%u pgtables:%lukB oom_score_adj:%hd\n", message, task_pid_nr(victim), victim->comm, K(mm->total_vm), K(get_mm_counter(mm, MM_ANONPAGES)), - K(get_mm_counter(mm, MM_FILEPAGES)), + K(get_mm_counter(mm, MM_FILEPAGES) + files_rss(victim->files)), K(get_mm_counter(mm, MM_SHMEMPAGES)), from_kuid(&init_user_ns, task_uid(victim)), mm_pgtables_bytes(mm) >> 10, victim->signal->oom_score_adj);