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| author | Brian Gerst <brgerst@gmail.com> | 2016-08-13 12:38:20 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-08-24 12:31:50 +0200 |
| commit | 616d24835eeafa8ef3466479db028abfdfc77531 (patch) | |
| tree | 855895f0566a9c7b7b1996cbee1a384995b5a068 /arch/x86/include/asm/switch_to.h | |
| parent | 0100301bfdf56a2a370c7157b5ab0fbf9313e1cd (diff) | |
| download | linux-0-day-616d24835eeafa8ef3466479db028abfdfc77531.tar.gz linux-0-day-616d24835eeafa8ef3466479db028abfdfc77531.tar.xz | |
sched/x86: Pass kernel thread parameters in 'struct fork_frame'
Instead of setting up a fake pt_regs context, put the kernel thread
function pointer and arg into the unused callee-restored registers
of 'struct fork_frame'.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1471106302-10159-6-git-send-email-brgerst@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/switch_to.h')
| -rw-r--r-- | arch/x86/include/asm/switch_to.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h index 886d5ea09dba8..5cb436acd4631 100644 --- a/arch/x86/include/asm/switch_to.h +++ b/arch/x86/include/asm/switch_to.h @@ -34,6 +34,8 @@ static inline void prepare_switch_to(struct task_struct *prev, #endif } +asmlinkage void ret_from_fork(void); + /* data that is pointed to by thread.sp */ struct inactive_task_frame { #ifdef CONFIG_X86_64 |