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authorMadhavan Srinivasan <maddy@linux.vnet.ibm.com>2015-05-31 11:36:23 +0530
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-06-01 10:26:19 -0300
commit9ecae065f3295d7ea5e1c5492170a848ca255a46 (patch)
tree38c065c7e2a71a4cb101796b4af48bdff5436095 /tools/perf/util/pmu.c
parent6bb536cc4b06df70012cec6168cc1788e200bc9d (diff)
perf tools: Remove newline char when reading event scale and unit
The <fd979c013207> commit intruduced the perf_event_sysfs_show function to display the event_str value of an attr in kernel/event/core.c. But the function returns the value with a newline char. So, if a event also carries a event.unit file, when printing the counter data perf tool formatting goes for a spin. That is, because of the event unit, event name is printed in the newline because of perf_event_sysfs_show returns with a newline char. Now fixing perf core will break API, hencing proposing a fix in the perf tool. Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1433052383-21802-1-git-send-email-maddy@linux.vnet.ibm.com [ Add spaces around operators ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/pmu.c')
-rw-r--r--tools/perf/util/pmu.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 5d3ab7c8ceaf..0fcc624eb767 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -112,7 +112,11 @@ static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *
if (sret < 0)
goto error;
- scale[sret] = '\0';
+ if (scale[sret - 1] == '\n')
+ scale[sret - 1] = '\0';
+ else
+ scale[sret] = '\0';
+
/*
* save current locale
*/
@@ -154,7 +158,10 @@ static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *n
close(fd);
- alias->unit[sret] = '\0';
+ if (alias->unit[sret - 1] == '\n')
+ alias->unit[sret - 1] = '\0';
+ else
+ alias->unit[sret] = '\0';
return 0;
error: