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authorLiam Mark <lmark@codeaurora.org>2021-05-05 03:37:25 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2021-05-05 20:27:24 +0200
commit7bc1aec5e28765ad18742824b3b972471807a632 (patch)
tree670c177be7f22d8a39849161863f0d7fe8263f52 /mm/migrate.c
parentmm: cma: use pr_err_ratelimited for CMA warning (diff)
downloadlinux-7bc1aec5e28765ad18742824b3b972471807a632.tar.xz
linux-7bc1aec5e28765ad18742824b3b972471807a632.zip
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. [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>
Diffstat (limited to 'mm/migrate.c')
-rw-r--r--mm/migrate.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index 30c65c2be30b..6b37d00890ca 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -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;