Messages in this thread Patch in this message |  | | From | Zhaoyang Huang <> | Subject | [PATCH v1] ringbuffer: Don't choose the process with adj equal OOM_SCORE_ADJ_MIN | Date | Sun, 8 Apr 2018 10:16:23 +0800 |
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Don't choose the process with adj == OOM_SCORE_ADJ_MIN which over-allocating pages for ring buffers.
Signed-off-by: Zhaoyang Huang <zhaoyang.huang@spreadtrum.com> --- kernel/trace/ring_buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 5f38398..1005d73 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -1135,7 +1135,7 @@ static int rb_check_pages(struct ring_buffer_per_cpu *cpu_buffer) static int __rb_allocate_pages(long nr_pages, struct list_head *pages, int cpu) { struct buffer_page *bpage, *tmp; - bool user_thread = current->mm != NULL; + bool user_thread = (current->mm != NULL && current->signal->oom_score_adj != OOM_SCORE_ADJ_MIN); gfp_t mflags; long i; -- 1.9.1
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