[RFC PATCH v2 01/23] perf expr: unlimited escaped characters in a symbol

[Ian Rogers]

Current expression allows 2 escaped '-,=' characters. However, some
metrics require more, for example Haswell DRAM_BW_Use.

Fixes: 26226a97724d (perf expr: Move expr lexer to flex)
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
 tools/perf/util/expr.l | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/expr.l b/tools/perf/util/expr.l
index 74b9b59b1aa5..73db6a9ef97e 100644
--- a/tools/perf/util/expr.l
+++ b/tools/perf/util/expr.l
@@ -86,7 +86,7 @@ number		[0-9]+
 sch		[-,=]
 spec		\\{sch}
 sym		[0-9a-zA-Z_\.:@?]+
-symbol		{spec}*{sym}*{spec}*{sym}*{spec}*{sym}
+symbol		({spec}|{sym})+
 
 %%
 	struct expr_scanner_ctx *sctx = expr_get_extra(yyscanner);
-- 
2.26.2.526.g744177e7f7-goog