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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 05:15:32 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 05:15:32 +0400
commitdb1417967959569599da2a4bd0ffb93b17ad795f (patch)
tree08751414d5f4a9e264af924154ed3543a8e573a9 /arch/s390/kernel/process.c
parent48aab2f79dfc1357c48ce22ff5c989b52a590069 (diff)
parentc6da39f26cfe475704ec521723192e520e8f51b8 (diff)
downloadlinux-db1417967959569599da2a4bd0ffb93b17ad795f.tar.xz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 patches from Martin Schwidefsky: "The biggest patch is the rework of the smp code, something I wanted to do for some time. There are some patches for our various dump methods and one new thing: z/VM LGR detection. LGR stands for linux-guest- relocation and is the guest migration feature of z/VM. For debugging purposes we keep a log of the systems where a specific guest has lived." Fix up trivial conflict in arch/s390/kernel/smp.c due to the scheduler cleanup having removed some code next to removed s390 code. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: [S390] kernel: Pass correct stack for smp_call_ipl_cpu() [S390] Ensure that vmcore_info pointer is never accessed directly [S390] dasd: prevent validate server for offline devices [S390] Remove monolithic build option for zcrypt driver. [S390] stack dump: fix indentation in output [S390] kernel: Add OS info memory interface [S390] Use block_sigmask() [S390] kernel: Add z/VM LGR detection [S390] irq: external interrupt code passing [S390] irq: set __ARCH_IRQ_EXIT_IRQS_DISABLED [S390] zfcpdump: Implement async sdias event processing [S390] Use copy_to_absolute_zero() instead of "stura/sturg" [S390] rework idle code [S390] rework smp code [S390] rename lowcore field [S390] Fix gcc 4.6.0 compile warning
Diffstat (limited to 'arch/s390/kernel/process.c')
-rw-r--r--arch/s390/kernel/process.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 7618085b4164..3732e4c09cbe 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -77,13 +77,8 @@ static void default_idle(void)
local_irq_enable();
return;
}
- trace_hardirqs_on();
- /* Don't trace preempt off for idle. */
- stop_critical_timings();
- /* Stop virtual timer and halt the cpu. */
+ /* Halt the cpu and keep track of cpu time accounting. */
vtime_stop_cpu();
- /* Reenable preemption tracer. */
- start_critical_timings();
}
void cpu_idle(void)