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arch: make the max stack frames configurable

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Current on x86 & risc-v that implement stack trace, the
maximum depth of the stack trace is defined by a macro.

Introduce a new Kconfig:EXCEPTION_STACK_TRACE_MAX_FRAMES
so that this is configurable in software.

Signed-off-by: Yong Cong Sin <ycsin@meta.com>
This commit is contained in:
Yong Cong Sin 2024-05-21 12:07:39 +08:00 • committed by Anas Nashif
commit c118cd5a13
3 changed files with 10 additions and 2 deletions
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2
arch/riscv/core/stacktrace.c
View file

@ -20,7 +20,7 @@ uintptr_t z_riscv_get_sp_before_exc(const z_arch_esf_t *esf);
#define PR_REG "%016" PRIxPTR #define PR_REG "%016" PRIxPTR
#endif #endif
#define MAX_STACK_FRAMES 8 #define MAX_STACK_FRAMES CONFIG_EXCEPTION_STACK_TRACE_MAX_FRAMES
struct stackframe { struct stackframe {
uintptr_t fp; uintptr_t fp;

2
arch/x86/core/fatal.c
View file

@ -140,7 +140,7 @@ struct stack_frame {
#endif #endif
}; };
#define MAX_STACK_FRAMES 8 #define MAX_STACK_FRAMES CONFIG_EXCEPTION_STACK_TRACE_MAX_FRAMES
__pinned_func __pinned_func
static void unwind_stack(uintptr_t base_ptr, uint16_t cs) static void unwind_stack(uintptr_t base_ptr, uint16_t cs)

8
subsys/debug/Kconfig
View file

@ -389,6 +389,14 @@ config EXCEPTION_STACK_TRACE
print a stack trace of function memory addresses when an print a stack trace of function memory addresses when an
exception is reported. exception is reported.
config EXCEPTION_STACK_TRACE_MAX_FRAMES
int "Configures the depth of stack trace"
default 8
depends on EXCEPTION_STACK_TRACE
help
In the event of a stack trace, this place a limit on the depths
of the stack to examine.
config EXCEPTION_STACK_TRACE_SYMTAB config EXCEPTION_STACK_TRACE_SYMTAB
bool "Print function names in the stack trace" bool "Print function names in the stack trace"
select SYMTAB select SYMTAB