diff options
| author | Ben Dooks <ben.dooks@codethink.co.uk> | 2023-11-23 13:42:14 +0000 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-02-07 09:55:27 -0800 |
| commit | 2cf963787529f615f7c93bdcf13a5e82029e7f38 (patch) | |
| tree | 7c1f908ffa76cbb20061970621eb992e42473efa | |
| parent | ce68c035457bdd025a9961e0ba2157323090c581 (diff) | |
| download | linux-2cf963787529f615f7c93bdcf13a5e82029e7f38.tar.gz | |
riscv: declare overflow_stack as exported from traps.c
The percpu area overflow_stacks is exported from arch/riscv/kernel/traps.c
for use in the entry code, but is not declared anywhere. Add the relevant
declaration to arch/riscv/include/asm/stacktrace.h to silence the following
sparse warning:
arch/riscv/kernel/traps.c:395:1: warning: symbol '__pcpu_scope_overflow_stack' was not declared. Should it be static?
We don't add the stackinfo_get_overflow() call as for some of the other
architectures as this doesn't seem to be used yet, so just silence the
warning.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Fixes: be97d0db5f44 ("riscv: VMAP_STACK overflow detection thread-safe")
Link: https://lore.kernel.org/r/20231123134214.81481-1-ben.dooks@codethink.co.uk
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| -rw-r--r-- | arch/riscv/include/asm/stacktrace.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/stacktrace.h b/arch/riscv/include/asm/stacktrace.h index f7e8ef2418b99f..b1495a7e06ce69 100644 --- a/arch/riscv/include/asm/stacktrace.h +++ b/arch/riscv/include/asm/stacktrace.h @@ -21,4 +21,9 @@ static inline bool on_thread_stack(void) return !(((unsigned long)(current->stack) ^ current_stack_pointer) & ~(THREAD_SIZE - 1)); } + +#ifdef CONFIG_VMAP_STACK +DECLARE_PER_CPU(unsigned long [OVERFLOW_STACK_SIZE/sizeof(long)], overflow_stack); +#endif /* CONFIG_VMAP_STACK */ + #endif /* _ASM_RISCV_STACKTRACE_H */ |