The patch titled
Subject: sparc32: make show_stack() acquire %fp if @_ksp is not specified
has been removed from the -mm tree. Its filename was
sparc32-make-show_stack-acquire-%fp-if-_ksp-is-not-specified.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Tejun Heo <tj@xxxxxxxxxx>
Subject: sparc32: make show_stack() acquire %fp if @_ksp is not specified
show_stack(current or NULL, NULL) is used by arch-independent code to dump
backtrace of the current task; however, sparc32 show_stack() doesn't
implement it and wouldn't print any backtrace when NULL @_ksp is specfied.
Make show_stack() acquire and use %fp if @tsk is NULL or current and @_ksp
is NULL. This makes %fp fetching in dump_stack() unnecessary. Make it
use NULL for @_ksp instead.
Only compile tested.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Fengguang Wu <fengguang.wu@xxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Jesper Nilsson <jesper.nilsson@xxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Mike Frysinger <vapier@xxxxxxxxxx>
Cc: Vineet Gupta <vgupta@xxxxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/sparc/kernel/process_32.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
diff -puN arch/sparc/kernel/process_32.c~sparc32-make-show_stack-acquire-%fp-if-_ksp-is-not-specified arch/sparc/kernel/process_32.c
--- a/arch/sparc/kernel/process_32.c~sparc32-make-show_stack-acquire-%fp-if-_ksp-is-not-specified
+++ a/arch/sparc/kernel/process_32.c
@@ -142,11 +142,13 @@ void show_stack(struct task_struct *tsk,
struct reg_window32 *rw;
int count = 0;
- if (tsk != NULL)
- task_base = (unsigned long) task_stack_page(tsk);
- else
- task_base = (unsigned long) current_thread_info();
+ if (!tsk)
+ tsk = current;
+ if (tsk == current && !_ksp)
+ __asm__ __volatile__("mov %%fp, %0" : "=r" (_ksp));
+
+ task_base = (unsigned long) task_stack_page(tsk);
fp = (unsigned long) _ksp;
do {
/* Bogus frame pointer? */
@@ -164,11 +166,7 @@ void show_stack(struct task_struct *tsk,
void dump_stack(void)
{
- unsigned long *ksp;
-
- __asm__ __volatile__("mov %%fp, %0"
- : "=r" (ksp));
- show_stack(current, ksp);
+ show_stack(current, NULL);
}
EXPORT_SYMBOL(dump_stack);
_
Patches currently in -mm which might be from tj@xxxxxxxxxx are
origin.patch
linux-next.patch
block-restore-proc-partitions-to-not-display-non-partitionable-removable-devices.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
