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>
diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h
index bf970f5..c4ef2e5 100644
--- a/tools/perf/util/env.h
+++ b/tools/perf/util/env.h
@@ -27,6 +27,12 @@ struct numa_node {
struct cpu_map *map;
};
+struct memory_node {
+ u64 node;
+ u64 size;
+ unsigned long *set;
+};
+
struct perf_env {
char *hostname;
char *os_release;
@@ -43,6 +49,7 @@ struct perf_env {
int nr_sibling_cores;
int nr_sibling_threads;
int nr_numa_nodes;
+ int nr_memory_nodes;
int nr_pmu_mappings;
int nr_groups;
char *cmdline;
@@ -54,6 +61,8 @@ struct perf_env {
struct cpu_cache_level *caches;
int caches_cnt;
struct numa_node *numa_nodes;
+ struct memory_node *memory_nodes;
+ unsigned long long memory_bsize;
};
extern struct perf_env perf_env;