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authorRoland McGrath <roland@redhat.com>2008-07-27 16:52:52 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-28 16:30:50 +1000
commit7d6d637dac2050f30a1b57b0a3dc5de4a10616ba (patch)
tree5108cacaf5e204d58bc07afb1d67c73144f1bf55 /arch/powerpc/kernel/entry_64.S
parentf1ba12856b7a7d43e495e216bc91e6bbf7aac383 (diff)
powerpc: Add TIF_NOTIFY_RESUME support for tracehook
This adds TIF_NOTIFY_RESUME support for powerpc. When set, we call tracehook_notify_resume() on the way to user mode. This overloads do_signal() to do the work, but changes its arguments to it has the TIF_* bits handy in a register and drops the useless first argument that was always zero. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/entry_64.S')
-rw-r--r--arch/powerpc/kernel/entry_64.S3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 79c089e97ce..2d802e97097 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -643,8 +643,7 @@ user_work:
b .ret_from_except_lite
1: bl .save_nvgprs
- li r3,0
- addi r4,r1,STACK_FRAME_OVERHEAD
+ addi r3,r1,STACK_FRAME_OVERHEAD
bl .do_signal
b .ret_from_except