[PATCH v5 06/17] arm64: stacktrace: Add description of stacktrace/common.h
From: Kalesh Singh <hidden>
Date: 2022-07-21 05:58:04
Also in:
kvmarm, lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
Add brief description on how to use stacktrace/common.h to implement a stack unwinder. Signed-off-by: Kalesh Singh <redacted> --- Changes in v5: - Add short description of each required function, per Fuad and Marc - Add Reviewed-by tag from Fuad arch/arm64/include/asm/stacktrace/common.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/arch/arm64/include/asm/stacktrace/common.h b/arch/arm64/include/asm/stacktrace/common.h
index 7807752aaab1..be7920ba70b0 100644
--- a/arch/arm64/include/asm/stacktrace/common.h
+++ b/arch/arm64/include/asm/stacktrace/common.h@@ -2,6 +2,21 @@ /* * Common arm64 stack unwinder code. * + * To implement a new arm64 stack unwinder: + * 1) Include this header + * + * 2) Provide implementations for the following functions: + * on_overflow_stack(): Returns true if SP is on the overflow + * stack. + * on_accessible_stack(): Returns true is SP is on any accessible + * stack. + * unwind_next(): Performs validation checks on the frame + * pointer, and transitions unwind_state + * to the next frame. + * + * See: arch/arm64/include/asm/stacktrace.h for reference + * implementations. + * * Copyright (C) 2012 ARM Ltd. */ #ifndef __ASM_STACKTRACE_COMMON_H
--
2.37.0.170.g444d1eabd0-goog
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel