| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1330672368-32290-8-git-send-email-john.stultz@linaro.org>
Date: Thu, 1 Mar 2012 23:12:46 -0800
From: John Stultz <john.stultz@...aro.org>
To: lkml <linux-kernel@...r.kernel.org>
Cc: John Stultz <john.stultz@...aro.org>, Ingo Molnar <mingo@...e.hu>,
Thomas Gleixner <tglx@...utronix.de>,
Eric Dumazet <eric.dumazet@...il.com>,
Richard Cochran <richardcochran@...il.com>
Subject: [PATCH 7/9] time: Convert the timekeeper's wlock to a raw_spin_lock
Convert the wlock to raw spin lock.
CC: Ingo Molnar <mingo@...e.hu>
CC: Thomas Gleixner <tglx@...utronix.de>
CC: Eric Dumazet <eric.dumazet@...il.com>
CC: Richard Cochran <richardcochran@...il.com>
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
kernel/time/timekeeping.c | 36 ++++++++++++++++++------------------
1 files changed, 18 insertions(+), 18 deletions(-)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 97982b1..2ceee24 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -81,7 +81,7 @@ static struct timekeeper shadow_tk;
/* This seqcount serializes readers from updates */
static seqcount_t timekeeper_rlock;
/* This spinlock serializes updaters */
-static spinlock_t timekeeper_wlock;
+static raw_spinlock_t timekeeper_wlock;
/*
* This read-write spinlock protects us from races in SMP while
@@ -236,13 +236,13 @@ void timekeeping_leap_insert(int leapsecond)
{
unsigned long flags;
- spin_lock_irqsave(&timekeeper_wlock, flags);
+ raw_spin_lock_irqsave(&timekeeper_wlock, flags);
write_seqcount_begin(&timekeeper_rlock);
timekeeper.xtime_sec += leapsecond;
timekeeper.wall_to_monotonic.tv_sec -= leapsecond;
timekeeping_update(&timekeeper, false);
write_seqcount_end(&timekeeper_rlock);
- spin_unlock_irqrestore(&timekeeper_wlock, flags);
+ raw_spin_unlock_irqrestore(&timekeeper_wlock, flags);
}
@@ -434,7 +434,7 @@ int do_settimeofday(const struct timespec *tv)
if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
return -EINVAL;
- spin_lock_irqsave(&timekeeper_wlock, flags);
+ raw_spin_lock_irqsave(&timekeeper_wlock, flags);
write_seqcount_begin(&timekeeper_rlock);
timekeeping_forward_now(&timekeeper);
@@ -451,7 +451,7 @@ int do_settimeofday(const struct timespec *tv)
timekeeping_update(&timekeeper, true);
write_seqcount_end(&timekeeper_rlock);
- spin_unlock_irqrestore(&timekeeper_wlock, flags);
+ raw_spin_unlock_irqrestore(&timekeeper_wlock, flags);
/* signal hrtimers about time change */
clock_was_set();
@@ -475,7 +475,7 @@ int timekeeping_inject_offset(struct timespec *ts)
if ((unsigned long)ts->tv_nsec >= NSEC_PER_SEC)
return -EINVAL;
- spin_lock_irqsave(&timekeeper_wlock, flags);
+ raw_spin_lock_irqsave(&timekeeper_wlock, flags);
write_seqcount_begin(&timekeeper_rlock);
timekeeping_forward_now(&timekeeper);
@@ -488,7 +488,7 @@ int timekeeping_inject_offset(struct timespec *ts)
timekeeping_update(&timekeeper, true);
write_seqcount_end(&timekeeper_rlock);
- spin_unlock_irqrestore(&timekeeper_wlock, flags);
+ raw_spin_unlock_irqrestore(&timekeeper_wlock, flags);
/* signal hrtimers about time change */
clock_was_set();
@@ -649,10 +649,10 @@ void __init timekeeping_init(void)
read_boot_clock(&boot);
seqcount_init(&timekeeper_rlock);
- spin_lock_init(&timekeeper_wlock);
+ raw_spin_lock_init(&timekeeper_wlock);
ntp_init();
- spin_lock_irqsave(&timekeeper_wlock, flags);
+ raw_spin_lock_irqsave(&timekeeper_wlock, flags);
write_seqcount_begin(&timekeeper_rlock);
clock = clocksource_default_clock();
@@ -672,7 +672,7 @@ void __init timekeeping_init(void)
timekeeper.total_sleep_time.tv_nsec = 0;
write_seqcount_end(&timekeeper_rlock);
- spin_unlock_irqrestore(&timekeeper_wlock, flags);
+ raw_spin_unlock_irqrestore(&timekeeper_wlock, flags);
}
@@ -722,7 +722,7 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
if (!(ts.tv_sec == 0 && ts.tv_nsec == 0))
return;
- spin_lock_irqsave(&timekeeper_wlock, flags);
+ raw_spin_lock_irqsave(&timekeeper_wlock, flags);
write_seqcount_begin(&timekeeper_rlock);
timekeeping_forward_now(&timekeeper);
@@ -732,7 +732,7 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
timekeeping_update(&timekeeper, true);
write_seqcount_end(&timekeeper_rlock);
- spin_unlock_irqrestore(&timekeeper_wlock, flags);
+ raw_spin_unlock_irqrestore(&timekeeper_wlock, flags);
/* signal hrtimers about time change */
clock_was_set();
@@ -755,7 +755,7 @@ static void timekeeping_resume(void)
clocksource_resume();
- spin_lock_irqsave(&timekeeper_wlock, flags);
+ raw_spin_lock_irqsave(&timekeeper_wlock, flags);
write_seqcount_begin(&timekeeper_rlock);
if (timespec_compare(&ts, &timekeeping_suspend_time) > 0) {
@@ -769,7 +769,7 @@ static void timekeeping_resume(void)
timekeeping_suspended = 0;
write_seqcount_end(&timekeeper_rlock);
- spin_unlock_irqrestore(&timekeeper_wlock, flags);
+ raw_spin_unlock_irqrestore(&timekeeper_wlock, flags);
touch_softlockup_watchdog();
@@ -787,7 +787,7 @@ static int timekeeping_suspend(void)
read_persistent_clock(&timekeeping_suspend_time);
- spin_lock_irqsave(&timekeeper_wlock, flags);
+ raw_spin_lock_irqsave(&timekeeper_wlock, flags);
write_seqcount_begin(&timekeeper_rlock);
timekeeping_forward_now(&timekeeper);
@@ -814,7 +814,7 @@ static int timekeeping_suspend(void)
}
write_seqcount_end(&timekeeper_rlock);
- spin_unlock_irqrestore(&timekeeper_wlock, flags);
+ raw_spin_unlock_irqrestore(&timekeeper_wlock, flags);
clockevents_notify(CLOCK_EVT_NOTIFY_SUSPEND, NULL);
clocksource_suspend();
@@ -1070,7 +1070,7 @@ static void update_wall_time(void)
unsigned long flags;
s64 remainder;
- spin_lock_irqsave(&timekeeper_wlock, flags);
+ raw_spin_lock_irqsave(&timekeeper_wlock, flags);
/* Make sure we're fully resumed: */
if (unlikely(timekeeping_suspended))
@@ -1161,7 +1161,7 @@ static void update_wall_time(void)
write_seqcount_end(&timekeeper_rlock);
out:
- spin_unlock_irqrestore(&timekeeper_wlock, flags);
+ raw_spin_unlock_irqrestore(&timekeeper_wlock, flags);
}
--
1.7.3.2.146.gca209
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists