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authorVineet Gupta <vgupta@synopsys.com>2013-05-27 20:13:41 +0400
committerVineet Gupta <vgupta@synopsys.com>2013-06-22 17:53:22 +0400
commit16f9afe651e8197fb7ce6df0990d8e2ad779e1af (patch)
treec6482028a0ceced44e7e4819f7741c2fd8084e3e /arch/arc/kernel/stacktrace.c
parent2fa919045b72ec892e17d56f888e6af4260b7629 (diff)
downloadlinux-16f9afe651e8197fb7ce6df0990d8e2ad779e1af.tar.xz
ARC: pt_regs update #3: Remove unused gutter at start of callee_regs
This is trickier than prev two: * context switching code saves kernel mode callee regs in the format of struct callee_regs thus needs adjustment. This also reduces the height of topmost kernel stack frame by 1 word. * Since kernel stack unwinder is sensitive to height of topmost kernel stack frame, that needs a word of adjustment too. ptrace needs a bit of updating since pt_regs now diverges from user_regs_struct. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/kernel/stacktrace.c')
-rw-r--r--arch/arc/kernel/stacktrace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arc/kernel/stacktrace.c b/arch/arc/kernel/stacktrace.c
index ca0207b9d5b6..f8b7d880304d 100644
--- a/arch/arc/kernel/stacktrace.c
+++ b/arch/arc/kernel/stacktrace.c
@@ -79,7 +79,7 @@ static void seed_unwind_frame_info(struct task_struct *tsk,
* assembly code
*/
frame_info->regs.r27 = 0;
- frame_info->regs.r28 += 64;
+ frame_info->regs.r28 += 60;
frame_info->call_frame = 0;
} else {