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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-12 03:49:08 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-12 03:49:08 +0200
commit8213a2f3eeafdecf06dd718cb4130372263f6067 (patch)
tree0d02e3201dac64d1429f8552ee1163d4a1ef1646 /arch/powerpc/kernel/entry_64.S
parentMerge branch 'writeback-for-next' of git://git.kernel.org/pub/scm/linux/kerne... (diff)
parentalpha: don't open-code trace_report_syscall_{enter,exit} (diff)
downloadlinux-8213a2f3eeafdecf06dd718cb4130372263f6067.tar.xz
linux-8213a2f3eeafdecf06dd718cb4130372263f6067.zip
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull pile 2 of execve and kernel_thread unification work from Al Viro: "Stuff in there: kernel_thread/kernel_execve/sys_execve conversions for several more architectures plus assorted signal fixes and cleanups. There'll be more (in particular, real fixes for the alpha do_notify_resume() irq mess)..." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (43 commits) alpha: don't open-code trace_report_syscall_{enter,exit} Uninclude linux/freezer.h m32r: trim masks avr32: trim masks tile: don't bother with SIGTRAP in setup_frame microblaze: don't bother with SIGTRAP in setup_rt_frame() mn10300: don't bother with SIGTRAP in setup_frame() frv: no need to raise SIGTRAP in setup_frame() x86: get rid of duplicate code in case of CONFIG_VM86 unicore32: remove pointless test h8300: trim _TIF_WORK_MASK parisc: decide whether to go to slow path (tracesys) based on thread flags parisc: don't bother looping in do_signal() parisc: fix double restarts bury the rest of TIF_IRET sanitize tsk_is_polling() bury _TIF_RESTORE_SIGMASK unicore32: unobfuscate _TIF_WORK_MASK mips: NOTIFY_RESUME is not needed in TIF masks mips: merge the identical "return from syscall" per-ABI code ... Conflicts: arch/arm/include/asm/thread_info.h
Diffstat (limited to 'arch/powerpc/kernel/entry_64.S')
-rw-r--r--arch/powerpc/kernel/entry_64.S16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 0e931aaffca2..56e0ff0878b5 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -370,6 +370,22 @@ _GLOBAL(ret_from_fork)
li r3,0
b syscall_exit
+_GLOBAL(ret_from_kernel_thread)
+ bl .schedule_tail
+ REST_NVGPRS(r1)
+ REST_GPR(2,r1)
+ mtlr r14
+ mr r3,r15
+ blrl
+ li r3,0
+ b .do_exit # no return
+
+_GLOBAL(__ret_from_kernel_execve)
+ addi r1,r3,-STACK_FRAME_OVERHEAD
+ li r10,1
+ std r10,SOFTE(r1)
+ b syscall_exit
+
.section ".toc","aw"
DSCR_DEFAULT:
.tc dscr_default[TC],dscr_default