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mm: cma: add trace events for CMA alloc perf testing

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Add cma and migrate trace events to enable CMA allocation performance to
be measured via ftrace.

[georgi.djakov@linaro.org: add the CMA instance name to the cma_alloc_start trace event]
  Link: https://lkml.kernel.org/r/20210326155414.25006-1-georgi.djakov@linaro.org

Link: https://lkml.kernel.org/r/20210324160740.15901-1-georgi.djakov@linaro.org
Signed-off-by: Liam Mark <lmark@codeaurora.org>
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Liam Mark
2021-05-04 18:37:25 -07:00
committed by Linus Torvalds
parent 63f83b31f4
commit 7bc1aec5e2
4 changed files with 69 additions and 1 deletions
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mm/migrate.c
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@@ -1418,6 +1418,8 @@ int migrate_pages(struct list_head *from, new_page_t get_new_page,
int rc, nr_subpages;
LIST_HEAD(ret_pages);
trace_mm_migrate_pages_start(mode, reason);
if (!swapwrite)
current->flags |= PF_SWAPWRITE;