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authorArnaldo Carvalho de Melo <acme@redhat.com>2018-06-04 10:28:20 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-06-04 10:28:20 -0300
commit7869e5889477e4e32e4024d665431b35e8b7b693 (patch)
treebd1b6c00359ef7f26efc1f6b0ad9771a3d849f65 /tools/perf/Documentation
parent9aae1780e7e81e54edfb70ba33ead5b0b48be009 (diff)
parent4e9ae0d3d5bf4e2f1b466ba451bd18f2c5b69845 (diff)
Merge remote-tracking branch 'tip/perf/urgent' into perf/core
To pick up fixes. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
-rw-r--r--tools/perf/Documentation/perf.data-file-format.txt10
1 files changed, 9 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf.data-file-format.txt b/tools/perf/Documentation/perf.data-file-format.txt
index d00f0d51cab8..dfb218feaad9 100644
--- a/tools/perf/Documentation/perf.data-file-format.txt
+++ b/tools/perf/Documentation/perf.data-file-format.txt
@@ -111,8 +111,8 @@ A perf_header_string with the CPU architecture (uname -m)
A structure defining the number of CPUs.
struct nr_cpus {
- uint32_t nr_cpus_online;
uint32_t nr_cpus_available; /* CPUs not yet onlined */
+ uint32_t nr_cpus_online;
};
HEADER_CPUDESC = 8,
@@ -153,10 +153,18 @@ struct {
HEADER_CPU_TOPOLOGY = 13,
String lists defining the core and CPU threads topology.
+The string lists are followed by a variable length array
+which contains core_id and socket_id of each cpu.
+The number of entries can be determined by the size of the
+section minus the sizes of both string lists.
struct {
struct perf_header_string_list cores; /* Variable length */
struct perf_header_string_list threads; /* Variable length */
+ struct {
+ uint32_t core_id;
+ uint32_t socket_id;
+ } cpus[nr]; /* Variable length records */
};
Example: