diff options
| author | Michael Ellerman <mpe@ellerman.id.au> | 2022-02-11 17:32:37 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-03-07 10:26:20 +1100 |
| commit | 48015b632f770c401f3816f144499a39f2884677 (patch) | |
| tree | 355ac74e2f468397dd3e146107d9bcc4fe96e1f3 | |
| parent | 58dbe9b373df2828d873b1c0e5afc77485b2f376 (diff) | |
| download | linux-48015b632f770c401f3816f144499a39f2884677.tar.gz | |
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
| -rw-r--r-- | arch/powerpc/include/asm/nmi.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h index 160abcb8e9fab..ea0e487f87b1f 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 |