Adding support to use comments within the custom metric file with both the shell '# ... ' and C '/* ... */ styles.
Signed-off-by: Jiri Olsa <[email protected]> --- tools/perf/util/expr.l | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tools/perf/util/expr.l b/tools/perf/util/expr.l index c6a930ed22e6..e9b294ba09fc 100644 --- a/tools/perf/util/expr.l +++ b/tools/perf/util/expr.l @@ -82,6 +82,8 @@ static int str(yyscan_t scanner, int token, int runtime) %} %x custom +%x comment_single +%x comment_multi number [0-9]*\.?[0-9]+ @@ -116,6 +118,16 @@ else { return ELSE; } #smt_on { return SMT_ON; } {number} { return value(yyscanner); } {symbol} { return str(yyscanner, ID, sctx->runtime); } + +"//" { BEGIN(comment_single); } +<comment_single>\n { BEGIN(INITIAL); } +<comment_single>. { } + +"/*" { BEGIN(comment_multi); } +<comment_multi>"*/" { BEGIN(INITIAL); } +<comment_multi>\n { } +<comment_multi>. { } + "|" { return '|'; } "^" { return '^'; } "&" { return '&'; } -- 2.25.4
