mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 02:25:02 +07:00
894cdde26b
In s390's spin_lock_irqsave, interrupts remain disabled while spinning. In other architectures like x86 and powerpc, interrupts are re-enabled while spinning if IRQ is not masked before spin_lock_irqsave is called. The following patch re-enables interrupts through local_irq_restore while spinning for a lock acquisition. This can improve system response. [heiko.carstens@de.ibm.com: removed saving of pc] Signed-off-by: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
||
|---|---|---|
| .. | ||
| delay.c | ||
| div64.c | ||
| Makefile | ||
| qrnnd.S | ||
| spinlock.c | ||
| string.c | ||
| uaccess_mvcos.c | ||
| uaccess_pt.c | ||
| uaccess_std.c | ||
| uaccess.h | ||