Commit 7494755a authored by Heiko Carstens's avatar Heiko Carstens
Browse files

s390/idle: remove raw_local_irq_save()/restore() from arch_cpu_idle() 



arch_cpu_idle() gets called with interrupts disabled,
and psw_idle() returns with interrupts disabled.
No reason to use raw_local_irq_save() / restore().

Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent 44292c86

arch/s390/kernel/idle.c

+2 −5
Original line number Diff line number Diff line
@@ -25,18 +25,15 @@ void arch_cpu_idle(void) 
{

	struct s390_idle_data *idle = this_cpu_ptr(&s390_idle);

	unsigned long long idle_time;

	unsigned long psw_mask, flags;



	unsigned long psw_mask;



	/* Wait for external, I/O or machine check interrupt. */

	psw_mask = PSW_KERNEL_BITS | PSW_MASK_WAIT | PSW_MASK_DAT |

		PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;

	clear_cpu_flag(CIF_NOHZ_DELAY);



	raw_local_irq_save(flags);

	/* Call the assembler magic in entry.S */

	/* psw_idle() returns with interrupts disabled. */

	psw_idle(idle, psw_mask);

	raw_local_irq_restore(flags);



	/* Account time spent with enabled wait psw loaded as idle time. */

	raw_write_seqcount_begin(&idle->seqcount);