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| author | Liam Mark <lmark@codeaurora.org> | 2015-11-25 14:37:54 -0800 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 21:14:00 -0700 |
| commit | 5d871bae1b53964a507fe60874cefe8464eb9e02 (patch) | |
| tree | b92624b151959099646f45cd159a48635187f3bf /mm/cma.c | |
| parent | ff76e3f64ed6d06ca53a81dbc42814aeecd14af2 (diff) | |
mm: cma: add trace events for CMA alloc perf testing
Add cma and migrate trace events to enable CMA allocation
performance to be measured via ftrace.
Change-Id: I1e471e9e21f1a14ce2ed167d8515ccb5f83eb88c
Signed-off-by: Liam Mark <lmark@codeaurora.org>
Diffstat (limited to 'mm/cma.c')
| -rw-r--r-- | mm/cma.c | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -379,6 +379,8 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align) if (!count) return NULL; + trace_cma_alloc_start(count, align); + mask = cma_bitmap_aligned_mask(cma, align); offset = cma_bitmap_aligned_offset(cma, align); bitmap_maxno = cma_bitmap_maxno(cma); @@ -416,6 +418,8 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align) pr_debug("%s(): memory range at %p is busy, retrying\n", __func__, pfn_to_page(pfn)); + + trace_cma_alloc_busy_retry(pfn, pfn_to_page(pfn), count, align); /* try again with a bit different memory target */ start = bitmap_no + mask + 1; } |