Em Fri, Jul 05, 2019 at 09:55:37AM +0100, Raphael Gault escreveu: > This test relies on the fact that the PMU registers are accessible > from userspace. It then uses the perf_event_mmap_page to retrieve > the counter index and access the underlying register. > > This test uses sched_setaffinity(2) in order to run on all CPU and thus > check the behaviour of the PMU of all cpus in a big.LITTLE environment. > > Signed-off-by: Raphael Gault <[email protected]> > --- > tools/perf/arch/arm64/include/arch-tests.h | 6 + > tools/perf/arch/arm64/tests/Build | 1 + > tools/perf/arch/arm64/tests/arch-tests.c | 4 + > tools/perf/arch/arm64/tests/user-events.c | 255 +++++++++++++++++++++ > 4 files changed, 266 insertions(+) > create mode 100644 tools/perf/arch/arm64/tests/user-events.c > > diff --git a/tools/perf/arch/arm64/include/arch-tests.h > b/tools/perf/arch/arm64/include/arch-tests.h > index 90ec4c8cb880..a9b17ae0560b 100644 > --- a/tools/perf/arch/arm64/include/arch-tests.h > +++ b/tools/perf/arch/arm64/include/arch-tests.h > @@ -2,11 +2,17 @@ > #ifndef ARCH_TESTS_H > #define ARCH_TESTS_H > > +#define __maybe_unused __attribute__((unused))
What is wrong with using: #include <linux/compiler.h> ? [acme@quaco perf]$ find tools/perf/ -name "*.[ch]" | xargs grep __maybe_unused | wc -l 1115 [acme@quaco perf]$ grep __maybe_unused tools/include/linux/compiler.h #ifndef __maybe_unused # define __maybe_unused __attribute__((unused)) [acme@quaco perf]$ Also please don't break strings in multiple lines just to comply with the 80 column limit. That is ok when you have multiple lines ending with a newline, but otherwise just makes it look ugly. - Arnaldo
