perf evsel: Print state of perf_event_attr.write_backward
tip-bot for Arnaldo Carvalho de Melo
merge botCommit-ID: 0a241ef4a27a00807fefdf913da104a4534c606a Gitweb: http://git.kernel.org/tip/0a241ef4a27a00807fefdf913da104a4534c606a Author: Arnaldo Carvalho de Melo <[email protected]> AuthorDate: Mon, 9 May 2016 18:08:33 -0300 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Mon, 9 May 2016 18:11:27 -0300
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 <[email protected]>
Cc David Ahern <[email protected]>
Cc Jiri Olsa <[email protected]>
Cc Milian Wolff <[email protected]>
Cc Namhyung Kim <[email protected]>
Cc Wang Nan <[email protected]>
Signed-off-by Arnaldo Carvalho de Melo <[email protected]>
--- tools/perf/util/evsel.c | 1 + 1 file changed, 1 insertion(+)
tools/perf/util/evsel.c +1 -0
@@ -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);