From e2a1f8d695c2d128d6e54e407e881c82ba9b50aa Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 11 Dec 2018 15:48:47 -0300 Subject: [PATCH] perf tools: Add missing sigqueue() prototype for systems lacking it [ Upstream commit 748fe0889c1ff12d378946bd5326e8ee8eacf5cf ] There are systems such as the Android NDK API level 24 has the sigqueue() function but doesn't provide a prototype, adding noise to the build: util/evlist.c: In function 'perf_evlist__prepare_workload': util/evlist.c:1494:4: warning: implicit declaration of function 'sigqueue' [-Wimplicit-function-declaration] if (sigqueue(getppid(), SIGUSR1, val)) ^ util/evlist.c:1494:4: warning: nested extern declaration of 'sigqueue' [-Wnested-externs] Define a LACKS_SIGQUEUE_PROTOTYPE define so that code needing that can get a prototype. Checked in the bionic git repo to be available since level 23: https://android.googlesource.com/platform/bionic/+/master/libc/include/signal.h#123 int sigqueue(pid_t __pid, int __signal, const union sigval __value) __INTRODUCED_IN(23); Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-lmhpev1uni9kdrv7j29glyov@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/Makefile.config | 1 + tools/perf/util/evlist.c | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index e30d20f..ff7a753 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -294,6 +294,7 @@ ifndef NO_BIONIC $(call feature_check,bionic) ifeq ($(feature-bionic), 1) BIONIC := 1 + CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE EXTLIBS := $(filter-out -lrt,$(EXTLIBS)) EXTLIBS := $(filter-out -lpthread,$(EXTLIBS)) endif diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index be440df..819aa44 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -34,6 +34,10 @@ #include #include +#ifdef LACKS_SIGQUEUE_PROTOTYPE +int sigqueue(pid_t pid, int sig, const union sigval value); +#endif + #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) #define SID(e, x, y) xyarray__entry(e->sample_id, x, y) -- 2.7.4