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authorSamuel Holland <samuel@sholland.org>2022-04-30 06:00:23 +0300
committerPalmer Dabbelt <palmer@rivosinc.com>2022-06-02 07:46:31 +0300
commit2273272823db6f67d57761df8116ae32e7f05bed (patch)
treeaedffefd64427cf71b07a276c6c573077c085e8d /arch/riscv
parent26b8f69edda85a7942fa580360690c2d5c74f765 (diff)
downloadlinux-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.h2
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 */