__always_inline can cause build error on musl libc. The fix patch has
submitted but not merged yet[1]. To build perf tool with musl libc,
<linux/stddef.h> inclusion is necessary and it should be included before
perf_event.h.
from /usr/include/linux/byteorder/little_endian.h:13,
from /usr/include/asm/byteorder.h:23,
from tools/include/uapi/linux/perf_event.h:20,
from arch/arm64/util/../../arm/util/pmu.c:9:
/usr/include/linux/swab.h:171:8: error: unknown type name '__always_inline'
171 | static __always_inline __u16 __swab16p(const __u16 *p)
| ^~~~~~~~~~~~~~~
[1]: https://lkml.org/lkml/2018/9/13/78
Cc: Mathieu Poirier <mathieu.poir...@linaro.org>
Cc: Suzuki K Poulose <suzuki.poul...@arm.com>
Cc: Mike Leach <mike.le...@linaro.org>
Cc: Leo Yan <leo....@linaro.org>
Cc: John Garry <john.ga...@huawei.com>
Cc: Will Deacon <w...@kernel.org>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Arnaldo Carvalho de Melo <a...@kernel.org>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Khem Raj <raj.k...@gmail.com>
Signed-off-by: Chanho Park <chanho61.p...@samsung.com>
---
tools/perf/arch/arm/util/pmu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/perf/arch/arm/util/pmu.c b/tools/perf/arch/arm/util/pmu.c
index bbc297a7e2e3..4c0357e8c0ab 100644
--- a/tools/perf/arch/arm/util/pmu.c
+++ b/tools/perf/arch/arm/util/pmu.c
@@ -6,6 +6,9 @@
#include <string.h>
#include <linux/coresight-pmu.h>
+#if !defined(__GLIBC__)
+#include <linux/stddef.h>
+#endif
#include <linux/perf_event.h>
#include <linux/string.h>
--
2.23.0
