diff options
| -rw-r--r-- | arch/arm64/kernel/vdso.c | 2 | ||||
| -rw-r--r-- | arch/arm64/kernel/vdso/gettimeofday.S | 8 |
2 files changed, 7 insertions, 3 deletions
diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c index ba457943a16b..c958cb84d75f 100644 --- a/arch/arm64/kernel/vdso.c +++ b/arch/arm64/kernel/vdso.c @@ -239,7 +239,7 @@ void update_vsyscall(struct timekeeper *tk) if (!use_syscall) { vdso_data->cs_cycle_last = tk->clock->cycle_last; vdso_data->xtime_clock_sec = tk->xtime_sec; - vdso_data->xtime_clock_nsec = tk->xtime_nsec >> tk->shift; + vdso_data->xtime_clock_nsec = tk->xtime_nsec; vdso_data->cs_mult = tk->mult; vdso_data->cs_shift = tk->shift; vdso_data->wtm_clock_sec = tk->wall_to_monotonic.tv_sec; diff --git a/arch/arm64/kernel/vdso/gettimeofday.S b/arch/arm64/kernel/vdso/gettimeofday.S index 99b7d405767c..6681f4032260 100644 --- a/arch/arm64/kernel/vdso/gettimeofday.S +++ b/arch/arm64/kernel/vdso/gettimeofday.S @@ -66,6 +66,7 @@ ENTRY(__kernel_gettimeofday) /* Convert ns to us. */ mov x13, #1000 + lsl x13, x13, x12 udiv x11, x11, x13 stp x10, x11, [x0, #TVAL_TV_SEC] 2: @@ -136,11 +137,13 @@ ENTRY(__kernel_clock_gettime) 4: /* Add on wtm timespec. */ add x10, x10, x13 + lsl x14, x14, x12 add x11, x11, x14 /* Normalise the new timespec. */ mov x15, #NSEC_PER_SEC_LO16 movk x15, #NSEC_PER_SEC_HI16, lsl #16 + lsl x15, x15, x12 cmp x11, x15 b.lt 5f sub x11, x11, x15 @@ -152,6 +155,7 @@ ENTRY(__kernel_clock_gettime) sub x10, x10, #1 6: /* Store to the user timespec. */ + lsr x11, x11, x12 stp x10, x11, [x1, #TSPEC_TV_SEC] mov x0, xzr ret x2 @@ -204,7 +208,7 @@ ENDPROC(__kernel_clock_getres) * Clobbers the temporary registers (x9 - x15). * Returns: * - w9 = vDSO sequence counter - * - (x10, x11) = (ts->tv_sec, ts->tv_nsec) + * - (x10, x11) = (ts->tv_sec, shifted ts->tv_nsec) * - w12 = cs_shift */ ENTRY(__do_get_tspec) @@ -226,11 +230,11 @@ ENTRY(__do_get_tspec) movn x15, #0xff00, lsl #48 and x10, x15, x10 mul x10, x10, x11 - lsr x10, x10, x12 /* Use the kernel time to calculate the new timespec. */ mov x11, #NSEC_PER_SEC_LO16 movk x11, #NSEC_PER_SEC_HI16, lsl #16 + lsl x11, x11, x12 add x15, x10, x14 udiv x14, x15, x11 add x10, x13, x14 |