From a1e2f60e3efc812bf66a2be0d8530ee175003f6d Mon Sep 17 00:00:00 2001 From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 14 Apr 2010 23:58:03 +0200 Subject: perf: Fix dynamic field detection Checking if a tracing field is an array with a dynamic length requires to check the field type and seek the "__data_loc" string that prepends the actual type, as can be found in a trace event format file: field:__data_loc char[] name; offset:16; size:4; signed:1; But we actually use strcmp() to check if the field type fully matches "__data_loc", which may fail as we trip over the rest of the type. To fix this, use strncmp to only check if it starts with "__data_loc". Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1271282283-23721-1-git-send-regression-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> --- tools/perf/util/trace-event-parse.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index 17d6d66ed76..d6ef414075a 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -761,7 +761,7 @@ static int field_is_string(struct format_field *field) static int field_is_dynamic(struct format_field *field) { - if (!strcmp(field->type, "__data_loc")) + if (!strncmp(field->type, "__data_loc", 10)) return 1; return 0; -- cgit v1.2.3-70-g09d2