The patch titled
Subject: mm: cma: Add the CMA instance name to the cma_alloc_start trace event
has been added to the -mm tree. Its filename is
mm-cma-add-trace-events-for-cma-alloc-perf-testing-fix.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-cma-add-trace-events-for-cma-alloc-perf-testing-fix.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-cma-add-trace-events-for-cma-alloc-perf-testing-fix.patch
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------------------------------------------------------
From: Georgi Djakov <georgi.djakov@xxxxxxxxxx>
Subject: mm: cma: Add the CMA instance name to the cma_alloc_start trace event
During CMA allocation, print also the name to identify the CMA instance.
Link: https://lkml.kernel.org/r/20210326155414.25006-1-georgi.djakov@xxxxxxxxxx
Signed-off-by: Georgi Djakov <georgi.djakov@xxxxxxxxxx>
Suggested-by: Minchan Kim <minchan@xxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/trace/events/cma.h | 9 ++++++---
mm/cma.c | 2 +-
2 files changed, 7 insertions(+), 4 deletions(-)
--- a/include/trace/events/cma.h~mm-cma-add-trace-events-for-cma-alloc-perf-testing-fix
+++ a/include/trace/events/cma.h
@@ -63,21 +63,24 @@ TRACE_EVENT(cma_release,
TRACE_EVENT(cma_alloc_start,
- TP_PROTO(unsigned int count, unsigned int align),
+ TP_PROTO(const char *name, unsigned int count, unsigned int align),
- TP_ARGS(count, align),
+ TP_ARGS(name, count, align),
TP_STRUCT__entry(
+ __string(name, name)
__field(unsigned int, count)
__field(unsigned int, align)
),
TP_fast_assign(
+ __assign_str(name, name);
__entry->count = count;
__entry->align = align;
),
- TP_printk("count=%u align=%u",
+ TP_printk("name=%s count=%u align=%u",
+ __get_str(name),
__entry->count,
__entry->align)
);
--- a/mm/cma.c~mm-cma-add-trace-events-for-cma-alloc-perf-testing-fix
+++ a/mm/cma.c
@@ -443,7 +443,7 @@ struct page *cma_alloc(struct cma *cma,
if (!count)
goto out;
- trace_cma_alloc_start(count, align);
+ trace_cma_alloc_start(cma->name, count, align);
mask = cma_bitmap_aligned_mask(cma, align);
offset = cma_bitmap_aligned_offset(cma, align);
_
Patches currently in -mm which might be from georgi.djakov@xxxxxxxxxx are
mm-page_owner-record-the-timestamp-of-all-pages-during-free.patch
mm-cma-add-trace-events-for-cma-alloc-perf-testing-fix.patch
