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    Subject[tip:x86/asm] x86/entry: Inline enter_from_user_mode()
    Commit-ID:  be8a18e2e98e04a5def5887d913b267865562448
    Gitweb: http://git.kernel.org/tip/be8a18e2e98e04a5def5887d913b267865562448
    Author: Paolo Bonzini <pbonzini@redhat.com>
    AuthorDate: Mon, 20 Jun 2016 16:58:30 +0200
    Committer: Ingo Molnar <mingo@kernel.org>
    CommitDate: Sun, 10 Jul 2016 13:33:02 +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>
    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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