From: Christophe Leroy <christophe.le...@c-s.fr> Instead of #ifdef, use IS_ENABLED(CONFIG_DEBUG_STACKOVERFLOW). This enable GCC to check for code validity even when the option is not selected.
Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr> Signed-off-by: Michael Ellerman <m...@ellerman.id.au> Link: https://lore.kernel.org/r/98855694e9e8993673af08cc2e97e16e0cf50f4a.1579849665.git.christophe.le...@c-s.fr --- arch/powerpc/kernel/irq.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index c7d6f5cdffdb..46d5852fb00a 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -599,9 +599,11 @@ u64 arch_irq_stat_cpu(unsigned int cpu) static inline void check_stack_overflow(void) { -#ifdef CONFIG_DEBUG_STACKOVERFLOW long sp; + if (!IS_ENABLED(CONFIG_DEBUG_STACKOVERFLOW)) + return; + sp = current_stack_pointer & (THREAD_SIZE - 1); /* check for stack overflow: is there less than 2KB free? */ @@ -609,7 +611,6 @@ static inline void check_stack_overflow(void) pr_err("do_IRQ: stack overflow: %ld\n", sp); dump_stack(); } -#endif } void __do_irq(struct pt_regs *regs) -- 2.21.1
