[PATCH v2 3/3] perf parse: Allow names to start with digits

[Dominique Martinet <asmadeus@codewreck.org>]

Tracepoints can start with digits, although we don't have many of these:

$ rg -g '*.h' '\bTRACE_EVENT\([0-9]'
net/mac802154/trace.h
53:TRACE_EVENT(802154_drv_return_int,
...

net/ieee802154/trace.h
66:TRACE_EVENT(802154_rdev_add_virtual_intf,
...

include/trace/events/9p.h
124:TRACE_EVENT(9p_client_req,
...

Just allow names to start with digits too so e.g. perf trace -e '9p:*'
works

Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
---
 tools/perf/tests/parse-events.c | 5 +++++
 tools/perf/util/parse-events.l  | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
index ef056e8740fe..6cf055dd5c09 100644
--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -2280,6 +2280,11 @@ static const struct evlist_test test__events[] = {
 		.check = test__checkevent_breakpoint_2_events,
 		/* 3 */
 	},
+	{
+		.name = "9p:9p_client_req",
+		.check = test__checkevent_tracepoint,
+		/* 4 */
+	},
 };
 
 static const struct evlist_test test__events_pmu[] = {
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index e86c45675e1d..c36f8dbf593a 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -158,8 +158,8 @@ event		[^,{}/]+
 num_dec		[0-9]+
 num_hex		0x[a-fA-F0-9]{1,16}
 num_raw_hex	[a-fA-F0-9]{1,16}
-name		[a-zA-Z_*?\[\]][a-zA-Z0-9_*?.\[\]!\-]*
-name_tag	[\'][a-zA-Z_*?\[\]][a-zA-Z0-9_*?\-,\.\[\]:=]*[\']
+name		[a-zA-Z0-9_*?\[\]][a-zA-Z0-9_*?.\[\]!\-]*
+name_tag	[\'][a-zA-Z0-9_*?\[\]][a-zA-Z0-9_*?\-,\.\[\]:=]*[\']
 name_minus	[a-zA-Z_*?][a-zA-Z0-9\-_*?.:]*
 drv_cfg_term	[a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?\.:]+)?
 /*

-- 
2.44.0