[PATCH stable 6.1 0/3] perf build fixes

From: Florian Fainelli

Date: Tue May 19 2026 - 15:00:59 EST


This patch series contains "perf" build fixes specific to 6.1. We have
seen occasional build failures in our CI looking like these:

util/parse-events-bison.c: In function 'yy_symbol_print':
util/parse-events-bison.c:901: error: unterminated #if
901 | #if YYDEBUG
|
util/parse-events-bison.c:1020:62: error: '_p' undeclared (first use in this function)
1020 | yy_symbol_value_print (yyo, yykind, yyvaluep, yylocationp, _parse_state, scanner);
| ^~
util/parse-events-bison.c:1020:62: note: each undeclared identifier is reported only once for each function it appears in
util/parse-events-bison.c:1020:64: error: expected ')' at end of input
1020 | yy_symbol_value_print (yyo, yykind, yyvaluep, yylocationp, _parse_state, scanner);
| ~ ^
| )
1021 | YYFPRINTF (yyo, ")");
|
util/parse-events-bison.c:1020:3: error: too few arguments to function 'yy_symbol_value_print'
1020 | yy_symbol_value_print (yyo, yykind, yyvaluep, yylocationp, _parse_state, scanner);
| ^~~~~~~~~~~~~~~~~~~~~
util/parse-events-bison.c:991:1: note: declared here
991 | yy_symbol_value_print (FILE *yyo,
| ^~~~~~~~~~~~~~~~~~~~~

which are resolved by these patches.

Ian Rogers (3):
perf build: Conditionally define NDEBUG
perf parse-events: Make YYDEBUG dependent on doing a debug build
perf build: Disable fewer bison warnings

tools/perf/Makefile.config | 1 +
tools/perf/util/Build | 12 ++++++++----
tools/perf/util/expr.y | 4 +++-
tools/perf/util/parse-events.y | 3 +++
tools/perf/util/pmu.y | 3 +++
5 files changed, 18 insertions(+), 5 deletions(-)

--
2.34.1