lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[S390] smp/idle: call init_idle() before starting a new cpu

Browse Source 
Call init_idle() which (re-)initializes the idle task structure before
it gets used on a new cpu.
That way we can also get rid of the odd preempt_enable_no_resched()
call we have in the cpu offline path within cpu_idle(). That call
prevented preempt count imbalances between cpu hotplug operations.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2011-01-05 12:48:09 +01:00
committed by Martin Schwidefsky
parent f230886b0b
commit da7f51c11d
3 changed files with 5 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/s390/include/asm/smp.h
View File

@@ -20,7 +20,6 @@ extern void machine_power_off_smp(void);
extern int __cpu_disable (void);
extern void __cpu_die (unsigned int cpu);
extern void cpu_die (void) __attribute__ ((noreturn));
extern int __cpu_up (unsigned int cpu);
extern struct mutex smp_cpu_state_mutex;
@@ -71,8 +70,10 @@ static inline void smp_switch_to_ipl_cpu(void (*func)(void *), void *data)
#ifdef CONFIG_HOTPLUG_CPU
extern int smp_rescan_cpus(void);
extern void __noreturn cpu_die(void);
#else
static inline int smp_rescan_cpus(void) { return 0; }
static inline void cpu_die(void) { }
#endif
#endif /* __ASM_SMP_H */