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perf alias: Remove trailing newline when reading sysfs files

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Remove a trailing newline when reading sysfs file contents such as
/sys/devices/cpum_cf/events/TX_NC_TEND.  This shows when verbose option
-v is used.

Output before:

  tx_nc_tend -> 'cpum_cf'/'event=0x008d
  '/

Output after:

  tx_nc_tend -> 'cpum_cf'/'event=0x8d'/

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20180615101105.47047-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Thomas Richter 2018-06-15 12:11:03 +02:00 committed by Arnaldo Carvalho de Melo
parent c6555c1457
commit ea23ac7308
1 changed files with 3 additions and 0 deletions
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3
tools/perf/util/pmu.c
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@ -303,6 +303,9 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
buf[ret] = 0;
/* Remove trailing newline from sysfs file */
rtrim(buf);
return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
NULL, NULL, NULL);
}