__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
asm/byteorder.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>
---
include/uapi/linux/perf_event.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index bb7b271397a6..af5e80dc7d54 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -17,6 +17,9 @@
#include <linux/types.h>
#include <linux/ioctl.h>
+#if !defined(__GLIBC__)
+#include <linux/stddef.h>
+#endif
#include <asm/byteorder.h>
/*
--
2.23.0
