diff options
| author | Samuel Holland <samuel@sholland.org> | 2022-04-30 06:00:23 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-06-02 07:46:31 +0300 |
| commit | 2273272823db6f67d57761df8116ae32e7f05bed (patch) | |
| tree | aedffefd64427cf71b07a276c6c573077c085e8d /arch/riscv | |
| parent | 26b8f69edda85a7942fa580360690c2d5c74f765 (diff) | |
| download | linux-2273272823db6f67d57761df8116ae32e7f05bed.tar.xz | |
riscv: Fix irq_work when SMP is disabled
irq_work is triggered via an IPI, but the IPI infrastructure is not
included in uniprocessor kernels. As a result, irq_work never runs.
Fall back to the tick-based irq_work implementation on uniprocessor
configurations.
Fixes: 298447928bb1 ("riscv: Support irq_work via self IPIs")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220430030025.58405-1-samuel@sholland.org
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/include/asm/irq_work.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/include/asm/irq_work.h b/arch/riscv/include/asm/irq_work.h index d6c277992f76..b53891964ae0 100644 --- a/arch/riscv/include/asm/irq_work.h +++ b/arch/riscv/include/asm/irq_work.h @@ -4,7 +4,7 @@ static inline bool arch_irq_work_has_interrupt(void) { - return true; + return IS_ENABLED(CONFIG_SMP); } extern void arch_irq_work_raise(void); #endif /* _ASM_RISCV_IRQ_WORK_H */ |