Messages in this thread Patch in this message | | | Date | Sat, 9 Jul 2016 04:53:16 -0700 | From | tip-bot for Paolo Bonzini <> | Subject | [tip:x86/asm] x86/entry: Inline enter_from_user_mode() |
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Commit-ID: eec4b1227db153ca16f8f5f285d01fefdce05438 Gitweb: http://git.kernel.org/tip/eec4b1227db153ca16f8f5f285d01fefdce05438 Author: Paolo Bonzini <pbonzini@redhat.com> AuthorDate: Mon, 20 Jun 2016 16:58:30 +0200 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Sat, 9 Jul 2016 10:44:02 +0200
x86/entry: Inline enter_from_user_mode()
This matches what is already done for prepare_exit_to_usermode(), and saves about 60 clock cycles (4% speedup) with the benchmark in the previous commit message.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Rik van Riel <riel@redhat.com> Reviewed-by: Andy Lutomirski <luto@kernel.org> Reviewed-by: Rik van Riel <riel@redhat.com> Reviewed-by: Andy Lutomirski <luto@kernel.org> Reviewed-by: Rik van Riel <riel@redhat.com> Reviewed-by: Andy Lutomirski <luto@kernel.org> Reviewed-by: Rik van Riel <riel@redhat.com> Reviewed-by: Andy Lutomirski <luto@kernel.org> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: kvm@vger.kernel.org Link: http://lkml.kernel.org/r/1466434712-31440-3-git-send-email-pbonzini@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/entry/common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c index 618bc61..9e1e27d 100644 --- a/arch/x86/entry/common.c +++ b/arch/x86/entry/common.c @@ -40,7 +40,7 @@ static struct thread_info *pt_regs_to_thread_info(struct pt_regs *regs) #ifdef CONFIG_CONTEXT_TRACKING /* Called on entry from user mode with IRQs off. */ -__visible void enter_from_user_mode(void) +__visible inline void enter_from_user_mode(void) { CT_WARN_ON(ct_state() != CONTEXT_USER); user_exit_irqoff();
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