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authorMichael Ellerman <mpe@ellerman.id.au>2022-02-11 17:32:37 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2022-03-07 10:26:20 +1100
commit48015b632f770c401f3816f144499a39f2884677 (patch)
tree355ac74e2f468397dd3e146107d9bcc4fe96e1f3 /arch
parent58dbe9b373df2828d873b1c0e5afc77485b2f376 (diff)
powerpc: Fix STACKTRACE=n build
Our skiroot_defconfig doesn't enable FTRACE, and so doesn't get STACKTRACE enabled either. That leads to a build failure since commit 1614b2b11fab ("arch: Make ARCH_STACKWALK independent of STACKTRACE") made stacktrace.c build even when STACKTRACE=n. arch/powerpc/kernel/stacktrace.c: In function ‘handle_backtrace_ipi’: arch/powerpc/kernel/stacktrace.c:171:2: error: implicit declaration of function ‘nmi_cpu_backtrace’ 171 | nmi_cpu_backtrace(regs); | ^~~~~~~~~~~~~~~~~ arch/powerpc/kernel/stacktrace.c: In function ‘arch_trigger_cpumask_backtrace’: arch/powerpc/kernel/stacktrace.c:226:2: error: implicit declaration of function ‘nmi_trigger_cpumask_backtrace’ 226 | nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This happens because our headers haven't defined arch_trigger_cpumask_backtrace, which causes lib/nmi_backtrace.c not to build nmi_cpu_backtrace(). The code in question doesn't actually depend on STACKTRACE=y, that was just added because arch_trigger_cpumask_backtrace() lived in stacktrace.c for convenience. So drop the dependency on CONFIG_STACKTRACE, that causes lib/nmi_backtrace.c to build nmi_cpu_backtrace() etc. and fixes the build. Fixes: 1614b2b11fab ("arch: Make ARCH_STACKWALK independent of STACKTRACE") [mpe: Cherry pick of 5a72345e6a78 from next into fixes] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220212111349.2806972-1-mpe@ellerman.id.au
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/include/asm/nmi.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
index 160abcb8e9fa..ea0e487f87b1 100644
--- a/arch/powerpc/include/asm/nmi.h
+++ b/arch/powerpc/include/asm/nmi.h
@@ -9,7 +9,7 @@ long soft_nmi_interrupt(struct pt_regs *regs);
static inline void arch_touch_nmi_watchdog(void) {}
#endif
-#if defined(CONFIG_NMI_IPI) && defined(CONFIG_STACKTRACE)
+#ifdef CONFIG_NMI_IPI
extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
bool exclude_self);
#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace