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| author |   Mark Rutland <mark.rutland@arm.com> | 2021-11-29 14:28:42 +0000 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2021-12-10 14:06:03 +0000 |
| commit | 1e5428b2b7e8aef6a1d10a33fa15df427f087450 (patch) | |
| tree | 05069d045a8e0fb5dc36965d53dd9cfe9fd72fa5 | |
| parent | arch: Make ARCH_STACKWALK independent of STACKTRACE (diff) | |
| download | linux-dev-1e5428b2b7e8aef6a1d10a33fa15df427f087450.tar.xz linux-dev-1e5428b2b7e8aef6a1d10a33fa15df427f087450.zip | |
arm64: Add comment for stack_info::kr_cur
We added stack_info::kr_cur in commit:
cd9bc2c9258816dc ("arm64: Recover kretprobe modified return address in stacktrace")
... but didn't add anything in the corresponding comment block.
For consistency, add a corresponding comment.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviwed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20211129142849.3056714-3-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| -rw-r--r-- | arch/arm64/include/asm/stacktrace.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/stacktrace.h b/arch/arm64/include/asm/stacktrace.h index 6564a01cc085..1367012e0520 100644 --- a/arch/arm64/include/asm/stacktrace.h +++ b/arch/arm64/include/asm/stacktrace.h @@ -47,6 +47,10 @@ struct stack_info { * @prev_type: The type of stack this frame record was on, or a synthetic * value of STACK_TYPE_UNKNOWN. This is used to detect a * transition from one stack to another. + * + * @kr_cur: When KRETPROBES is selected, holds the kretprobe instance + * associated with the most recently encountered replacement lr + * value. */ struct stackframe { unsigned long fp; |