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authorThomas Gleixner <tglx@linutronix.de>2017-10-02 12:34:50 +0200
committerThomas Gleixner <tglx@linutronix.de>2017-10-04 10:53:53 +0200
commit6b9dc4806b28214a4a260517e59439e0ac12a15e (patch)
tree7d233652a05a29c420e274ee00727be7a079ebb8 /arch/powerpc
parent77c01d11bbb2b5c005347061bf543ab94878314c (diff)
downloadlinux-6b9dc4806b28214a4a260517e59439e0ac12a15e.tar.bz2
watchdog/core, powerpc: Replace watchdog_nmi_reconfigure()
The recent cleanup of the watchdog code split watchdog_nmi_reconfigure() into two stages. One to stop the NMI and one to restart it after reconfiguration. That was done by adding a boolean 'run' argument to the code, which is functionally correct but not necessarily a piece of art. Replace it by two explicit functions: watchdog_nmi_stop() and watchdog_nmi_start(). Fixes: 6592ad2fcc8f ("watchdog/core, powerpc: Make watchdog_nmi_reconfigure() two stage") Requested-by: Linus 'Nursing his pet-peeve' Torvalds <torvalds@linuxfoundation.org> Signed-off-by: Thomas 'Mopping up garbage' Gleixner <tglx@linutronix.de> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Don Zickus <dzickus@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1710021957480.2114@nanos
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/watchdog.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
index dfb067764480..2673ec8bec00 100644
--- a/arch/powerpc/kernel/watchdog.c
+++ b/arch/powerpc/kernel/watchdog.c
@@ -355,19 +355,24 @@ static void watchdog_calc_timeouts(void)
wd_timer_period_ms = watchdog_thresh * 1000 * 2 / 5;
}
-void watchdog_nmi_reconfigure(bool run)
+void watchdog_nmi_stop(void)
{
int cpu;
cpus_read_lock();
- if (!run) {
- for_each_cpu(cpu, &wd_cpus_enabled)
- stop_wd_on_cpu(cpu);
- } else {
- watchdog_calc_timeouts();
- for_each_cpu_and(cpu, cpu_online_mask, &watchdog_cpumask)
- start_wd_on_cpu(cpu);
- }
+ for_each_cpu(cpu, &wd_cpus_enabled)
+ stop_wd_on_cpu(cpu);
+ cpus_read_unlock();
+}
+
+void watchdog_nmi_start(void)
+{
+ int cpu;
+
+ cpus_read_lock();
+ watchdog_calc_timeouts();
+ for_each_cpu_and(cpu, cpu_online_mask, &watchdog_cpumask)
+ start_wd_on_cpu(cpu);
cpus_read_unlock();
}