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PowerPC: Add time vDSO support

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PowerPC kernel now provides a vDSO implementation for time syscall
(commit fcb41a2030abe0eb716ef0798035ef9562097f42). This patch changes
time syscall wrapper to use the vDSO when available. It also changes
the default non vDSO time on PowerPC to use sysdeps/posix/time.c
(since gettimeofday is a vDSO call).
This commit is contained in:
Adhemerval Zanella
2013-05-03 15:00:31 -05:00
parent c31a5b1e8f
commit 83e7640f6b
5 changed files with 81 additions and 3 deletions
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4
sysdeps/unix/sysv/linux/powerpc/init-first.c
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@ -28,7 +28,7 @@ void *__vdso_clock_gettime;
void *__vdso_clock_getres;
void *__vdso_get_tbfreq;
void *__vdso_getcpu;
void *__vdso_time;
static inline void
_libc_vdso_platform_setup (void)
@ -44,6 +44,8 @@ _libc_vdso_platform_setup (void)
__vdso_get_tbfreq = _dl_vdso_vsym ("__kernel_get_tbfreq", &linux2615);
__vdso_getcpu = _dl_vdso_vsym ("__kernel_getcpu", &linux2615);
__vdso_time = _dl_vdso_vsym ("__kernel_time", &linux2615);
}
# define VDSO_SETUP _libc_vdso_platform_setup