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| author | Kajol Jain <kjain@linux.ibm.com> | 2021-10-06 17:06:51 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-10-19 18:27:00 +0300 |
| commit | f4c6217f7f5936f7173d028559ff5d25cce10816 (patch) | |
| tree | b2a5137c2857aeec6aadf697a44e5caa09b01087 /tools/include | |
| parent | 79df45731da68772d2285265864a52c900b8c65f (diff) | |
| download | linux-f4c6217f7f5936f7173d028559ff5d25cce10816.tar.xz | |
perf: Add comment about current state of PERF_MEM_LVL_* namespace and remove an extra line
Add a comment about PERF_MEM_LVL_* namespace being depricated
to some extent in favour of added PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_}
fields.
Remove an extra line present in perf_mem__lvl_scnprintf function.
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20211006140654.298352-2-kjain@linux.ibm.com
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/uapi/linux/perf_event.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h index f92880a15645..e1701e9c7858 100644 --- a/tools/include/uapi/linux/perf_event.h +++ b/tools/include/uapi/linux/perf_event.h @@ -1241,7 +1241,13 @@ union perf_mem_data_src { #define PERF_MEM_OP_EXEC 0x10 /* code (execution) */ #define PERF_MEM_OP_SHIFT 0 -/* memory hierarchy (memory level, hit or miss) */ +/* + * PERF_MEM_LVL_* namespace being depricated to some extent in the + * favour of newer composite PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_} fields. + * Supporting this namespace inorder to not break defined ABIs. + * + * memory hierarchy (memory level, hit or miss) + */ #define PERF_MEM_LVL_NA 0x01 /* not available */ #define PERF_MEM_LVL_HIT 0x02 /* hit level */ #define PERF_MEM_LVL_MISS 0x04 /* miss level */ |