[PATCH v3] x86/vdso: Handle clock_gettime(CLOCK_TAI) in vDSO

2018-08-31 Thread Matt Rickard
Process clock_gettime(CLOCK_TAI) in vDSO. This makes the call about as fast as CLOCK_REALTIME and CLOCK_MONOTONIC: nanoseconds before after clockname - - 23387 CLOCK_TAI 9693 CLOCK_REALTIME 8887 CLOCK_MONOTONIC Signed-off-by: Matt Rickard

[RESEND PATCH] x86/vdso: Handle clock_gettime(CLOCK_TAI) in vDSO

2018-08-17 Thread Matt Rickard
Process clock_gettime(CLOCK_TAI) in vDSO. This makes the call about as fast as CLOCK_REALTIME instead of taking about four times as long. Signed-off-by: Matt Rickard --- arch/x86/entry/vdso/vclock_gettime.c| 25 + arch/x86/entry/vsyscall/vsyscall_gtod.c | 2 ++ arch

[RESEND PATCH] x86/vdso: Handle clock_gettime(CLOCK_TAI) in vDSO

2018-08-17 Thread Matt Rickard
Process clock_gettime(CLOCK_TAI) in vDSO. This makes the call about as fast as CLOCK_REALTIME instead of taking about four times as long. Signed-off-by: Matt Rickard --- 0 files changed