From b666f382900c74f23c78556777041c2ceb7c2b24 Mon Sep 17 00:00:00 2001
From: Nathan Lynch <nathan_lynch@mentor.com>
Date: Mon, 3 Feb 2014 19:48:52 +0000
Subject: [PATCH] arm64: vdso: update wtm fields for CLOCK_MONOTONIC_COARSE
commit d4022a335271a48cce49df35d825897914fbffe3 upstream.
Update wall-to-monotonic fields in the VDSO data page
unconditionally. These are used to service CLOCK_MONOTONIC_COARSE,
which is not guarded by use_syscall.
Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/kernel/vdso.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c
index 6a389dc1bd49..0ea7a22bcdf2 100644
--- a/arch/arm64/kernel/vdso.c
+++ b/arch/arm64/kernel/vdso.c
@@ -235,6 +235,8 @@ void update_vsyscall(struct timekeeper *tk)
vdso_data->use_syscall = use_syscall;
vdso_data->xtime_coarse_sec = xtime_coarse.tv_sec;
vdso_data->xtime_coarse_nsec = xtime_coarse.tv_nsec;
+ vdso_data->wtm_clock_sec = tk->wall_to_monotonic.tv_sec;
+ vdso_data->wtm_clock_nsec = tk->wall_to_monotonic.tv_nsec;
if (!use_syscall) {
vdso_data->cs_cycle_last = tk->clock->cycle_last;
@@ -242,8 +244,6 @@ void update_vsyscall(struct timekeeper *tk)
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;
- vdso_data->wtm_clock_nsec = tk->wall_to_monotonic.tv_nsec;
}
smp_wmb();
--
2.34.1