diff options
| author | Dennis Zhou <dennisz@fb.com> | 2017-06-20 01:28:32 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2017-06-20 21:31:43 +0200 |
| commit | df95e795a722892a9e0603ce4b9b62fab9f02967 (patch) | |
| tree | f26b6c6c78874be2b866d516c42da69a67acc07c /mm/percpu-km.c | |
| parent | percpu: expose statistics about percpu memory via debugfs (diff) | |
| download | linux-df95e795a722892a9e0603ce4b9b62fab9f02967.tar.xz linux-df95e795a722892a9e0603ce4b9b62fab9f02967.zip | |
percpu: add tracepoint support for percpu memory
Add support for tracepoints to the following events: chunk allocation,
chunk free, area allocation, area free, and area allocation failure.
This should let us replay percpu memory requests and evaluate
corresponding decisions.
Signed-off-by: Dennis Zhou <dennisz@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'mm/percpu-km.c')
| -rw-r--r-- | mm/percpu-km.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/percpu-km.c b/mm/percpu-km.c index 3bbfa0c9d069..2b79e43c626f 100644 --- a/mm/percpu-km.c +++ b/mm/percpu-km.c @@ -73,6 +73,7 @@ static struct pcpu_chunk *pcpu_create_chunk(void) spin_unlock_irq(&pcpu_lock); pcpu_stats_chunk_alloc(); + trace_percpu_create_chunk(chunk->base_addr); return chunk; } @@ -82,6 +83,7 @@ static void pcpu_destroy_chunk(struct pcpu_chunk *chunk) const int nr_pages = pcpu_group_sizes[0] >> PAGE_SHIFT; pcpu_stats_chunk_dealloc(); + trace_percpu_destroy_chunk(chunk->base_addr); if (chunk && chunk->data) __free_pages(chunk->data, order_base_2(nr_pages)); |