| Message ID | 9f0f72424a8f0260470ecd50d5803db685285ba5.1578934751.git.christophe.leroy@c-s.fr (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Paul Burton |
| Headers | show |
| Series | powerpc: switch VDSO to C implementation. | expand |
diff --git a/lib/vdso/gettimeofday.c b/lib/vdso/gettimeofday.c index 9ecfd3b547ba..42bd8ab955fa 100644 --- a/lib/vdso/gettimeofday.c +++ b/lib/vdso/gettimeofday.c @@ -221,6 +221,7 @@ int __cvdso_clock_getres_common(clockid_t clock, struct __kernel_timespec *res) return 0; } +static __maybe_unused int __cvdso_clock_getres(clockid_t clock, struct __kernel_timespec *res) { int ret = __cvdso_clock_getres_common(clock, res);
When __cvdso_clock_getres() became __cvdso_clock_getres_common() and a new __cvdso_clock_getres() was added, static qualifier was forgotten. This change allows the compiler to inline __cvdso_clock_getres_common(), and the performance improvement is significant: Before: clock-getres-realtime-coarse: vdso: 984 nsec/call clock-getres-realtime: vdso: 922 nsec/call clock-getres-monotonic-raw: vdso: 968 nsec/call After: clock-getres-realtime-coarse: vdso: 753 nsec/call clock-getres-realtime: vdso: 691 nsec/call clock-getres-monotonic-raw: vdso: 737 nsec/call Fixes: 502a590a170b ("lib/vdso: Move fallback invocation to the callers") Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- lib/vdso/gettimeofday.c | 1 + 1 file changed, 1 insertion(+)