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authorArnaldo Carvalho de Melo <acme@redhat.com>2016-05-09 18:08:33 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-05-09 18:11:27 -0300
commit0a241ef4a27a00807fefdf913da104a4534c606a (patch)
tree1b22c53682fa4bffeaf75fc822382ff9dbe08f83 /tools/perf
parentee74701ed8add8ad13e642e8618b51fd75add32d (diff)
downloadlinux-0a241ef4a27a00807fefdf913da104a4534c606a.tar.gz
perf evsel: Print state of perf_event_attr.write_backward
Now we can see if it is set when using verbose mode in various tools, such as 'perf test': # perf test -vv back 45: Test backward reading from ring buffer : --- start --- <SNIP> ------------------------------------------------------------ perf_event_attr: type 2 size 112 config 0x98 { sample_period, sample_freq } 1 sample_type IP|TID|TIME|CPU|PERIOD|RAW disabled 1 mmap 1 comm 1 task 1 sample_id_all 1 exclude_guest 1 mmap2 1 comm_exec 1 write_backward 1 ------------------------------------------------------------ sys_perf_event_open: pid 20911 cpu -1 group_fd -1 flags 0x8 <SNIP> ---- end ---- Test backward reading from ring buffer: Ok # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-kxv05kv9qwl5of7rzfeiiwbv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/util/evsel.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 3371721a05f2..a23f54793e51 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1316,6 +1316,7 @@ int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
PRINT_ATTRf(comm_exec, p_unsigned);
PRINT_ATTRf(use_clockid, p_unsigned);
PRINT_ATTRf(context_switch, p_unsigned);
+ PRINT_ATTRf(write_backward, p_unsigned);
PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned);
PRINT_ATTRf(bp_type, p_unsigned);