From e5e0e63528f2d302c8190fc909baf97f250acb70 Mon Sep 17 00:00:00 2001
From: Ian Rogers <irogers@google.com>
Date: Fri, 1 May 2020 10:33:28 -0700
Subject: perf expr: Debug lex if debugging yacc

Only effects parser debugging (disabled by default). Enables displaying
'--accepting rule at line .. ("...").

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Haiyan Song <haiyanx.song@intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200501173333.227162-8-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/expr.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'tools/perf')

diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
index aa631e37ad1e..8b4ce704a68d 100644
--- a/tools/perf/util/expr.c
+++ b/tools/perf/util/expr.c
@@ -45,6 +45,7 @@ __expr__parse(double *val, struct expr_parse_ctx *ctx, const char *expr,
 
 #ifdef PARSER_DEBUG
 	expr_debug = 1;
+	expr_set_debug(1, scanner);
 #endif
 
 	ret = expr_parse(val, ctx, scanner);
-- 
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