diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cpu.c | 19 | ||||
| -rw-r--r-- | kernel/cpuset.c | 2 | ||||
| -rw-r--r-- | kernel/kgdb.c | 3 |
3 files changed, 23 insertions, 1 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index 9e7ebde1331c..86d49045daed 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -454,6 +454,25 @@ out: } #endif /* CONFIG_PM_SLEEP_SMP */ +/** + * notify_cpu_starting(cpu) - call the CPU_STARTING notifiers + * @cpu: cpu that just started + * + * This function calls the cpu_chain notifiers with CPU_STARTING. + * It must be called by the arch code on the new cpu, before the new cpu + * enables interrupts and before the "boot" cpu returns from __cpu_up(). + */ +void notify_cpu_starting(unsigned int cpu) +{ + unsigned long val = CPU_STARTING; + +#ifdef CONFIG_PM_SLEEP_SMP + if (cpu_isset(cpu, frozen_cpus)) + val = CPU_STARTING_FROZEN; +#endif /* CONFIG_PM_SLEEP_SMP */ + raw_notifier_call_chain(&cpu_chain, val, (void *)(long)cpu); +} + #endif /* CONFIG_SMP */ /* diff --git a/kernel/cpuset.c b/kernel/cpuset.c index 827cd9adccb2..eab7bd6628e0 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -1921,7 +1921,7 @@ static void remove_tasks_in_empty_cpuset(struct cpuset *cs) * that has tasks along with an empty 'mems'. But if we did see such * a cpuset, we'd handle it just like we do if its 'cpus' was empty. */ -static void scan_for_empty_cpusets(const struct cpuset *root) +static void scan_for_empty_cpusets(struct cpuset *root) { LIST_HEAD(queue); struct cpuset *cp; /* scans cpusets being updated */ diff --git a/kernel/kgdb.c b/kernel/kgdb.c index 25d955dbb989..e4dcfb2272a4 100644 --- a/kernel/kgdb.c +++ b/kernel/kgdb.c @@ -590,6 +590,7 @@ static void kgdb_wait(struct pt_regs *regs) /* Signal the primary CPU that we are done: */ atomic_set(&cpu_in_kgdb[cpu], 0); + touch_softlockup_watchdog(); clocksource_touch_watchdog(); local_irq_restore(flags); } @@ -1432,6 +1433,7 @@ acquirelock: atomic_read(&kgdb_cpu_doing_single_step) != cpu) { atomic_set(&kgdb_active, -1); + touch_softlockup_watchdog(); clocksource_touch_watchdog(); local_irq_restore(flags); @@ -1524,6 +1526,7 @@ acquirelock: kgdb_restore: /* Free kgdb_active */ atomic_set(&kgdb_active, -1); + touch_softlockup_watchdog(); clocksource_touch_watchdog(); local_irq_restore(flags); |