diff options
author | James Morris <jmorris@namei.org> | 2011-01-10 09:46:24 +1100 |
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committer | James Morris <jmorris@namei.org> | 2011-01-10 09:46:24 +1100 |
commit | d2e7ad19229f982fc1eb731827d82ceac90abfb3 (patch) | |
tree | 98a3741b4d4b27a48b3c7ea9babe331e539416a8 /arch/s390/kernel/vtime.c | |
parent | d03a5d888fb688c832d470b749acc5ed38e0bc1d (diff) | |
parent | 0c21e3aaf6ae85bee804a325aa29c325209180fd (diff) |
Merge branch 'master' into next
Conflicts:
security/smack/smack_lsm.c
Verified and added fix by Stephen Rothwell <sfr@canb.auug.org.au>
Ok'd by Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'arch/s390/kernel/vtime.c')
-rw-r--r-- | arch/s390/kernel/vtime.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index 56c8687b29b..1ccdf4d8aa8 100644 --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -19,6 +19,8 @@ #include <linux/kernel_stat.h> #include <linux/rcupdate.h> #include <linux/posix-timers.h> +#include <linux/cpu.h> +#include <linux/kprobes.h> #include <asm/s390_ext.h> #include <asm/timer.h> @@ -121,7 +123,7 @@ void account_system_vtime(struct task_struct *tsk) } EXPORT_SYMBOL_GPL(account_system_vtime); -void vtime_start_cpu(__u64 int_clock, __u64 enter_timer) +void __kprobes vtime_start_cpu(__u64 int_clock, __u64 enter_timer) { struct s390_idle_data *idle = &__get_cpu_var(s390_idle); struct vtimer_queue *vq = &__get_cpu_var(virt_cpu_timer); @@ -161,7 +163,7 @@ void vtime_start_cpu(__u64 int_clock, __u64 enter_timer) idle->sequence++; } -void vtime_stop_cpu(void) +void __kprobes vtime_stop_cpu(void) { struct s390_idle_data *idle = &__get_cpu_var(s390_idle); struct vtimer_queue *vq = &__get_cpu_var(virt_cpu_timer); @@ -322,6 +324,7 @@ static void do_cpu_timer_interrupt(unsigned int ext_int_code, struct list_head cb_list; /* the callback queue */ __u64 elapsed, next; + kstat_cpu(smp_processor_id()).irqs[EXTINT_TMR]++; INIT_LIST_HEAD(&cb_list); vq = &__get_cpu_var(virt_cpu_timer); @@ -566,6 +569,23 @@ void init_cpu_vtimer(void) __ctl_set_bit(0,10); } +static int __cpuinit s390_nohz_notify(struct notifier_block *self, + unsigned long action, void *hcpu) +{ + struct s390_idle_data *idle; + long cpu = (long) hcpu; + + idle = &per_cpu(s390_idle, cpu); + switch (action) { + case CPU_DYING: + case CPU_DYING_FROZEN: + idle->nohz_delay = 0; + default: + break; + } + return NOTIFY_OK; +} + void __init vtime_init(void) { /* request the cpu timer external interrupt */ @@ -574,5 +594,6 @@ void __init vtime_init(void) /* Enable cpu timer interrupts on the boot cpu. */ init_cpu_vtimer(); + cpu_notifier(s390_nohz_notify, 0); } |