Commit 1e5428b2 authored by Mark Rutland's avatar Mark Rutland Committed by Catalin Marinas
Browse files

arm64: Add comment for stack_info::kr_cur 



We added stack_info::kr_cur in commit:

  cd9bc2c9 ("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: default avatarMark Rutland <mark.rutland@arm.com>
Reviwed-by: default avatarMark Brown <broonie@kernel.org>
Reviewed-by: default avatarMasami 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: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 1614b2b1

arch/arm64/include/asm/stacktrace.h

+4 −0
Original line number Diff line number Diff line
@@ -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;