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| author | Jiri Olsa <jolsa@kernel.org> | 2018-03-07 16:50:08 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-03-08 15:30:46 +0100 |
| commit | e2091cedd51bf5306bcd5dd498d2977abfe20e88 (patch) | |
| tree | 89684de454fbbb4e2d8b5f19f8632e09ac76d8d2 /tools/include | |
| parent | perf c2c: Use mem_info refcnt logic (diff) | |
| download | linux-e2091cedd51bf5306bcd5dd498d2977abfe20e88.tar.xz linux-e2091cedd51bf5306bcd5dd498d2977abfe20e88.zip | |
perf tools: Add MEM_TOPOLOGY feature to perf data file
Adding MEM_TOPOLOGY feature to perf data file,
that will carry physical memory map and its
node assignments.
The format of data in MEM_TOPOLOGY is as follows:
0 - version | for future changes
8 - block_size_bytes | /sys/devices/system/memory/block_size_bytes
16 - count | number of nodes
For each node we store map of physical indexes for
each node:
32 - node id | node index
40 - size | size of bitmap
48 - bitmap | bitmap of memory indexes that belongs to node
| /sys/devices/system/node/node<NODE>/memory<INDEX>
The MEM_TOPOLOGY could be displayed with following
report command:
$ perf report --header-only -I
...
# memory nodes (nr 1, block size 0x8000000):
# 0 [7G]: 0-23,32-69
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180307155020.32613-8-jolsa@kernel.org
[ Rename 'index' to 'idx', as this breaks the build in rhel5, 6 and other systems where this is used by glibc headers ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/linux/bitmap.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/include/linux/bitmap.h b/tools/include/linux/bitmap.h index ca160270fdfa..63440cc8d618 100644 --- a/tools/include/linux/bitmap.h +++ b/tools/include/linux/bitmap.h @@ -98,7 +98,7 @@ static inline int test_and_set_bit(int nr, unsigned long *addr) /** * bitmap_alloc - Allocate bitmap - * @nr: Bit to set + * @nbits: Number of bits */ static inline unsigned long *bitmap_alloc(int nbits) { |