From a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 5 Aug 2026 07:52:36 -0700 Subject: workqueue: skip the node_nr_active update for non-unbound workqueues apply_wqattrs_commit() updates node_nr_active->max unconditionally. wq->node_nr_active[] is only allocated for unbound workqueues, so guard the call before per-cpu workqueues start using this path. No functional change: only unbound workqueues reach apply_wqattrs_*() today. Signed-off-by: Breno Leitao Signed-off-by: Tejun Heo --- tools/perf/util/pmu.l | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 tools/perf/util/pmu.l (limited to 'tools/perf/util/pmu.l') diff --git a/tools/perf/util/pmu.l b/tools/perf/util/pmu.l new file mode 100644 index 000000000..67b247be6 --- /dev/null +++ b/tools/perf/util/pmu.l @@ -0,0 +1,48 @@ +%option prefix="perf_pmu_" +%option reentrant +%option bison-bridge + +%{ +#include +#include +#include "pmu.h" +#include "pmu-bison.h" + +char *perf_pmu_get_text(yyscan_t yyscanner); +YYSTYPE *perf_pmu_get_lval(yyscan_t yyscanner); + +static int value(yyscan_t scanner, int base) +{ + YYSTYPE *yylval = perf_pmu_get_lval(scanner); + char *text = perf_pmu_get_text(scanner); + long num; + + errno = 0; + num = strtoul(text, NULL, base); + if (errno) + return PP_ERROR; + + yylval->num = num; + return PP_VALUE; +} + +%} + +num_dec [0-9]+ + +%% + +{num_dec} { return value(yyscanner, 10); } +config { return PP_CONFIG; } +- { return '-'; } +: { return ':'; } +, { return ','; } +. { ; } +\n { ; } + +%% + +int perf_pmu_wrap(void *scanner __maybe_unused) +{ + return 1; +} -- cgit v1.3.1