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authorJiri Olsa <jolsa@kernel.org>2018-03-07 16:50:08 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-03-08 11:30:46 -0300
commite2091cedd51bf5306bcd5dd498d2977abfe20e88 (patch)
tree89684de454fbbb4e2d8b5f19f8632e09ac76d8d2 /tools/include
parent5cedb413a63d452356aa634e0d4ffcc24f7dbcb5 (diff)
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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.h2
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)
{