summaryrefslogtreecommitdiff
path: root/arch/arm/include
diff options
context:
space:
mode:
authorArd Biesheuvel <ardb@kernel.org>2022-03-10 18:05:28 +0100
committerRussell King (Oracle) <rmk+kernel@armlinux.org.uk>2022-03-11 13:00:55 +0000
commitbee4e1fdc31223f8e0569370635ced223a1dd2ce (patch)
tree76dd2e5d42902bcebafa3caf4b303226dcbf79f3 /arch/arm/include
parent7a8ca84a258a79e564b77b1bbb139f3f561d149b (diff)
ARM: Revert "unwind: dump exception stack from calling frame"
After simplifying the stack switch code in the IRQ exception handler by deferring the actual stack switch to call_with_stack(), we no longer need to special case the way we dump the exception stack, since it will always be at the top of whichever stack was active when the exception was taken. So revert this special handling for the ARM unwinder. This reverts commit 4ab6827081c63b83011a18d8e27f621ed34b1194. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/stacktrace.h10
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/arm/include/asm/stacktrace.h b/arch/arm/include/asm/stacktrace.h
index e56503fd9447..3e78f921b8b2 100644
--- a/arch/arm/include/asm/stacktrace.h
+++ b/arch/arm/include/asm/stacktrace.h
@@ -21,16 +21,6 @@ struct stackframe {
struct llist_node *kr_cur;
struct task_struct *tsk;
#endif
-#ifdef CONFIG_ARM_UNWIND
- /*
- * This field is used to track the stack pointer value when calling
- * __entry routines. This is needed when IRQ stacks and overflow stacks
- * are used, because in that case, the struct pt_regs passed to these
- * __entry routines may be at the top of the task stack, while we are
- * executing from another stack.
- */
- unsigned long sp_low;
-#endif
};
static __always_inline