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| author | Dennis Zhou <dennisz@fb.com> | 2017-06-19 19:28:32 -0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2017-06-20 15:31:43 -0400 |
| commit | df95e795a722892a9e0603ce4b9b62fab9f02967 (patch) | |
| tree | f26b6c6c78874be2b866d516c42da69a67acc07c /mm/percpu-vm.c | |
| parent | 30a5b5367ef9d5c9055414e12ec2f02d9de2e70f (diff) | |
| download | linux-stable-df95e795a722892a9e0603ce4b9b62fab9f02967.tar.gz linux-stable-df95e795a722892a9e0603ce4b9b62fab9f02967.tar.bz2 linux-stable-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-vm.c')
| -rw-r--r-- | mm/percpu-vm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/percpu-vm.c b/mm/percpu-vm.c index 5915a224da52..7ad9d94bf547 100644 --- a/mm/percpu-vm.c +++ b/mm/percpu-vm.c @@ -345,6 +345,7 @@ static struct pcpu_chunk *pcpu_create_chunk(void) chunk->base_addr = vms[0]->addr - pcpu_group_offsets[0]; pcpu_stats_chunk_alloc(); + trace_percpu_create_chunk(chunk->base_addr); return chunk; } @@ -352,6 +353,7 @@ static struct pcpu_chunk *pcpu_create_chunk(void) static void pcpu_destroy_chunk(struct pcpu_chunk *chunk) { pcpu_stats_chunk_dealloc(); + trace_percpu_destroy_chunk(chunk->base_addr); if (chunk && chunk->data) pcpu_free_vm_areas(chunk->data, pcpu_nr_groups); |