From: John Stultz <johnstul@us.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: John Stultz <johnstul@us.ibm.com>,
Paul Mackerras <paulus@samba.org>,
Anton Blanchard <anton@samba.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: [RFC][PATCH 2/6] powerpc: Cleanup xtime usage
Date: Fri, 4 Jun 2010 19:53:22 -0700 [thread overview]
Message-ID: <1275706406-8111-3-git-send-email-johnstul@us.ibm.com> (raw)
In-Reply-To: <1275706406-8111-2-git-send-email-johnstul@us.ibm.com>
This removes powerpc's direct xtime usage, allowing for further
generic timeekeping cleanups
Compiled but otherwise untested.
Cc: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
---
arch/powerpc/kernel/time.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 6fcd648..0711d60 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -864,9 +864,9 @@ void update_vsyscall(struct timespec *wall_time, struct clocksource *clock,
/* XXX this assumes clock->shift == 22 */
/* 4611686018 ~= 2^(20+64-22) / 1e9 */
new_tb_to_xs = (u64) mult * 4611686018ULL;
- new_stamp_xsec = (u64) xtime.tv_nsec * XSEC_PER_SEC;
+ new_stamp_xsec = (u64) wall_time->tv_nsec * XSEC_PER_SEC;
do_div(new_stamp_xsec, 1000000000);
- new_stamp_xsec += (u64) xtime.tv_sec * XSEC_PER_SEC;
+ new_stamp_xsec += (u64) wall_time->tv_sec * XSEC_PER_SEC;
/*
* tb_update_count is used to allow the userspace gettimeofday code
@@ -884,7 +884,7 @@ void update_vsyscall(struct timespec *wall_time, struct clocksource *clock,
vdso_data->tb_to_xs = new_tb_to_xs;
vdso_data->wtom_clock_sec = wall_to_monotonic.tv_sec;
vdso_data->wtom_clock_nsec = wall_to_monotonic.tv_nsec;
- vdso_data->stamp_xtime = xtime;
+ vdso_data->stamp_xtime = *wall_time;
smp_wmb();
++(vdso_data->tb_update_count);
}
@@ -1093,7 +1093,7 @@ void __init time_init(void)
vdso_data->tb_orig_stamp = tb_last_jiffy;
vdso_data->tb_update_count = 0;
vdso_data->tb_ticks_per_sec = tb_ticks_per_sec;
- vdso_data->stamp_xsec = (u64) xtime.tv_sec * XSEC_PER_SEC;
+ vdso_data->stamp_xsec = (u64) get_seconds() * XSEC_PER_SEC;
vdso_data->tb_to_xs = tb_to_xs;
write_sequnlock_irqrestore(&xtime_lock, flags);
--
1.6.0.4
next prev parent reply other threads:[~2010-06-05 2:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-05 2:53 [RFC][PATCH 0/6] xtime/wall_to_monotonic cleanups John Stultz
2010-06-05 2:53 ` [RFC][PATCH 1/6] powerpc: Simplify update_vsyscall John Stultz
2010-06-05 2:53 ` John Stultz [this message]
2010-06-05 2:53 ` [RFC][PATCH 3/6] Fix update_vsyscall to provide wall_to_monotonic offset John Stultz
2010-06-05 2:53 ` [RFC][PATCH 4/6] Convert um to use read_persistent_clock John Stultz
2010-06-05 2:53 ` [RFC][PATCH 5/6] Cleanup hrtimer.c's direct access to wall_to_monotonic John Stultz
2010-06-05 2:53 ` [RFC][PATCH 6/6] Make xtime and wall_to_monotonic static John Stultz
2010-06-05 10:23 ` [RFC][PATCH 5/6] Cleanup hrtimer.c's direct access to wall_to_monotonic Arnd Bergmann
2010-06-05 18:01 ` john stultz
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