diff options
| author | David S. Miller <davem@davemloft.net> | 2015-05-23 01:22:35 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-05-23 01:22:35 -0400 |
| commit | 36583eb54d46c36a447afd6c379839f292397429 (patch) | |
| tree | 70f5399529dc2135a986947b37c655194da60e9d /kernel/watchdog.c | |
| parent | fa7912be967102cdbecd8ef172571b28eb22099e (diff) | |
| parent | cf539cbd8a81e12880735a0912de8b99f46c84fd (diff) | |
| download | kernel_replicant_linux-36583eb54d46c36a447afd6c379839f292397429.tar.gz kernel_replicant_linux-36583eb54d46c36a447afd6c379839f292397429.tar.bz2 kernel_replicant_linux-36583eb54d46c36a447afd6c379839f292397429.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/ethernet/cadence/macb.c
drivers/net/phy/phy.c
include/linux/skbuff.h
net/ipv4/tcp.c
net/switchdev/switchdev.c
Switchdev was a case of RTNH_H_{EXTERNAL --> OFFLOAD}
renaming overlapping with net-next changes of various
sorts.
phy.c was a case of two changes, one adding a local
variable to a function whilst the second was removing
one.
tcp.c overlapped a deadlock fix with the addition of new tcp_info
statistic values.
macb.c involved the addition of two zyncq device entries.
skbuff.h involved adding back ipv4_daddr to nf_bridge_info
whilst net-next changes put two other existing members of
that struct into a union.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/watchdog.c')
| -rw-r--r-- | kernel/watchdog.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index 2316f50b07a4..581a68a04c64 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -41,6 +41,8 @@ #define NMI_WATCHDOG_ENABLED (1 << NMI_WATCHDOG_ENABLED_BIT) #define SOFT_WATCHDOG_ENABLED (1 << SOFT_WATCHDOG_ENABLED_BIT) +static DEFINE_MUTEX(watchdog_proc_mutex); + #ifdef CONFIG_HARDLOCKUP_DETECTOR static unsigned long __read_mostly watchdog_enabled = SOFT_WATCHDOG_ENABLED|NMI_WATCHDOG_ENABLED; #else @@ -608,26 +610,36 @@ void watchdog_nmi_enable_all(void) { int cpu; - if (!watchdog_user_enabled) - return; + mutex_lock(&watchdog_proc_mutex); + + if (!(watchdog_enabled & NMI_WATCHDOG_ENABLED)) + goto unlock; get_online_cpus(); for_each_online_cpu(cpu) watchdog_nmi_enable(cpu); put_online_cpus(); + +unlock: + mutex_unlock(&watchdog_proc_mutex); } void watchdog_nmi_disable_all(void) { int cpu; + mutex_lock(&watchdog_proc_mutex); + if (!watchdog_running) - return; + goto unlock; get_online_cpus(); for_each_online_cpu(cpu) watchdog_nmi_disable(cpu); put_online_cpus(); + +unlock: + mutex_unlock(&watchdog_proc_mutex); } #else static int watchdog_nmi_enable(unsigned int cpu) { return 0; } @@ -744,8 +756,6 @@ static int proc_watchdog_update(void) } -static DEFINE_MUTEX(watchdog_proc_mutex); - /* * common function for watchdog, nmi_watchdog and soft_watchdog parameter * |