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perf tools: Parse tracepoints with '-' in system name

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Trace events potentially can have a '-' in their trace system name,
e.g. kvm on s390 defines kvm-s390:* tracepoints.
We could not parse them, because there was no rule for this:
  $ sudo ./perf top -e "kvm-s390:*"
  invalid or unsupported event: 'kvm-s390:*'

This patch adds an extra rule to event_legacy_tracepoint which handles
those cases. Without the patch, perf will not accept such tracepoints in
the -e option.

Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Link: http://lkml.kernel.org/r/1398440047-6641-2-git-send-email-yarygin@linux.vnet.ibm.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
This commit is contained in:
Alexander Yarygin 2014-04-25 17:34:05 +02:00 committed by Jiri Olsa
parent e148c76083
commit 2b9032e0ec
1 changed files with 12 additions and 0 deletions
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12
tools/perf/util/parse-events.y
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@ -299,6 +299,18 @@ PE_PREFIX_MEM PE_VALUE sep_dc
}
event_legacy_tracepoint:
PE_NAME '-' PE_NAME ':' PE_NAME
{
struct parse_events_evlist *data = _data;
struct list_head *list;
char sys_name[128];
snprintf(&sys_name, 128, "%s-%s", $1, $3);
ALLOC_LIST(list);
ABORT_ON(parse_events_add_tracepoint(list, &data->idx, &sys_name, $5));
$$ = list;
}
|
PE_NAME ':' PE_NAME
{
struct parse_events_evlist *data = _data;