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authorJiri Olsa <jolsa@redhat.com>2012-08-08 12:14:14 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-08-14 17:03:44 -0300
commit89efb029502d7f2d0993ed2aa9280c414336939c (patch)
treebb7b21dbad1e0b2b47a28ec24e3a430e22f19d1c /tools/perf/util/parse-events.l
parenta619183672aace2ce3de15728da922d303c0eef9 (diff)
perf tools: Add support to parse event group syntax
Adding scanner/parser bits to parse event groups. The grammar for group is: groups: groups ',' group | group group: group_name '{' events '}' group_mod group_name: name | empty group_mod: ':' group_mods | empty group_mods: event_mod It's possible to use standard event modifier as a modifier for group. It'll be used as an update to existing event modifiers. It's necessary to use quoting ("'\) when specifying group on command line, since {} characters are interpreted by most of the shells. It is now possible to specify groups in event syntax like: '{cycles,faults}' - anonymous group 'group1{cycles,faults} - group with name 'group1' '{cycles,faults}:k - anonymous group with event modifier 'k' '{cpu-clock,task-clock},{minor-faults,major-faults}' - two anonymous groups The grouping functionality itself is coming shortly. Reviewed-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ulrich Drepper <drepper@gmail.com> Link: http://lkml.kernel.org/n/tip-p4j8bnvo879uokum4k4zk5q6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/parse-events.l')
-rw-r--r--tools/perf/util/parse-events.l2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index e4abdf25d493..2c0d006d43db 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -151,6 +151,8 @@ r{num_raw_hex} { return raw(yyscanner); }
- { return '-'; }
, { return ','; }
: { return ':'; }
+"{" { return '{'; }
+"}" { return '}'; }
= { return '='; }
\n { }