diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2022-04-13 15:59:06 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2022-04-22 15:33:13 +0100 |
| commit | cb86a41b35c8f5da93ee7370c11634b57509d22b (patch) | |
| tree | 5c09cb8206f1929c51b7fd145a996be09118539b | |
| parent | 4f6277e8ac397e5932d9af5c6b3dadefe81d53dc (diff) | |
arm64: stacktrace: delete PCS comment
The comment at the top of stacktrace.c isn't all that helpful, as it's
not associated with the code which inspects the frame record, and the
code example isn't representative of common code generation today.
Delete it.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Madhavan T. Venkataraman <madvenka@linux.microsoft.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Will Deacon <will@kernel.org>
Reviewed-by: Madhavan T. Venkataraman <madvenka@linux.microsoft.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kalesh Singh <kaleshsingh@google.com> for the series.
Link: https://lore.kernel.org/r/20220413145910.3060139-3-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| -rw-r--r-- | arch/arm64/kernel/stacktrace.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 94932ade5c79..08af9ca9a845 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -18,21 +18,6 @@ #include <asm/stack_pointer.h> #include <asm/stacktrace.h> -/* - * AArch64 PCS assigns the frame pointer to x29. - * - * A simple function prologue looks like this: - * sub sp, sp, #0x10 - * stp x29, x30, [sp] - * mov x29, sp - * - * A simple function epilogue looks like this: - * mov sp, x29 - * ldp x29, x30, [sp] - * add sp, sp, #0x10 - */ - - static notrace void start_backtrace(struct stackframe *frame, unsigned long fp, unsigned long pc) { |