From 54c6ed7562d59ab238df1ec9ff76d81d7d0f0842 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Steinbrink?= Date: Sat, 16 Jun 2007 10:15:56 -0700 Subject: [PATCH] i386: use the right wrapper to disable the NMI watchdog MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When disabled through /proc/sys/kernel/nmi_watchdog, the NMI watchdog uses the stop() method directly, which does not decrement the activity counter, leading to a BUG(). Use the wrapper function instead to fix that. Signed-off-by: Björn Steinbrink Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/kernel/cpu/perfctr-watchdog.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/i386/kernel/cpu/perfctr-watchdog.c b/arch/i386/kernel/cpu/perfctr-watchdog.c index 8343244b72c4..98488f997da6 100644 --- a/arch/i386/kernel/cpu/perfctr-watchdog.c +++ b/arch/i386/kernel/cpu/perfctr-watchdog.c @@ -28,7 +28,7 @@ struct wd_ops { void (*unreserve)(void); int (*setup)(unsigned nmi_hz); void (*rearm)(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz); - void (*stop)(void *); + void (*stop)(void); unsigned perfctr; unsigned evntsel; u64 checkbit; @@ -142,7 +142,7 @@ void disable_lapic_nmi_watchdog(void) if (atomic_read(&nmi_active) <= 0) return; - on_each_cpu(wd_ops->stop, NULL, 0, 1); + on_each_cpu(stop_apic_nmi_watchdog, NULL, 0, 1); wd_ops->unreserve(); BUG_ON(atomic_read(&nmi_active) != 0); @@ -255,7 +255,7 @@ static int setup_k7_watchdog(unsigned nmi_hz) return 1; } -static void single_msr_stop_watchdog(void *arg) +static void single_msr_stop_watchdog(void) { struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); @@ -442,7 +442,7 @@ static int setup_p4_watchdog(unsigned nmi_hz) return 1; } -static void stop_p4_watchdog(void *arg) +static void stop_p4_watchdog(void) { struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk); wrmsr(wd->cccr_msr, 0, 0); @@ -634,7 +634,7 @@ int lapic_watchdog_init(unsigned nmi_hz) void lapic_watchdog_stop(void) { if (wd_ops) - wd_ops->stop(NULL); + wd_ops->stop(); } unsigned lapic_adjust_nmi_hz(unsigned hz)