diff options
| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2021-02-19 23:32:56 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2021-02-24 00:31:22 +0100 |
| commit | 55f03123f60985815e57cc9d1b29dea48e32e709 (patch) | |
| tree | 9b630a367a297fef57d6f3a7a5f54872fa7f5362 /arch/s390/include/asm/irq_work.h | |
| parent | s390/topology: move cpumasks away from stack (diff) | |
| download | linux-55f03123f60985815e57cc9d1b29dea48e32e709.tar.xz linux-55f03123f60985815e57cc9d1b29dea48e32e709.zip | |
s390/smp: implement arch_irq_work_raise()
The immediate need to have this is to have bpf_send_signal() send the
signal ASAP instead of during the next hrtimer interrupt. However, it
should also improve irq_work_queue() latencies in general, as well as
get s390 out of the lame architectures list [1].
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/kernel/irq_work.c?h=v5.11#n45
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/irq_work.h')
| -rw-r--r-- | arch/s390/include/asm/irq_work.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/s390/include/asm/irq_work.h b/arch/s390/include/asm/irq_work.h new file mode 100644 index 000000000000..603783766d0a --- /dev/null +++ b/arch/s390/include/asm/irq_work.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_S390_IRQ_WORK_H +#define _ASM_S390_IRQ_WORK_H + +static inline bool arch_irq_work_has_interrupt(void) +{ + return true; +} + +void arch_irq_work_raise(void); + +#endif /* _ASM_S390_IRQ_WORK_H */ |