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| author | Ingo Molnar <mingo@elte.hu> | 2010-08-25 13:09:58 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-08-25 13:10:00 +0200 |
| commit | 7de5d895b2020260190db0021de646f3f22f755e (patch) | |
| tree | 51d012f0b76a2ec1bd3b4837690faf1087f37056 /arch/s390/kernel/smp.c | |
| parent | 04fba67163a9e6132614b72b33bb2743bd33ffb3 (diff) | |
| parent | 502adf5778f4151dcba3f64dd6ed322151f3712c (diff) | |
Merge branch 'linus' into perf/core
Merge reason: pick up perf fixes
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/s390/kernel/smp.c')
| -rw-r--r-- | arch/s390/kernel/smp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 541053ed234e..8127ebd59c4d 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -583,6 +583,7 @@ int __cpuinit __cpu_up(unsigned int cpu) sf->gprs[9] = (unsigned long) sf; cpu_lowcore->save_area[15] = (unsigned long) sf; __ctl_store(cpu_lowcore->cregs_save_area, 0, 15); + atomic_inc(&init_mm.context.attach_count); asm volatile( " stam 0,15,0(%0)" : : "a" (&cpu_lowcore->access_regs_save_area) : "memory"); @@ -659,6 +660,7 @@ void __cpu_die(unsigned int cpu) while (sigp_p(0, cpu, sigp_set_prefix) == sigp_busy) udelay(10); smp_free_lowcore(cpu); + atomic_dec(&init_mm.context.attach_count); pr_info("Processor %d stopped\n", cpu); } |