Commit be8a18e2 authored Jun 20, 2016 by Paolo Bonzini Committed by Ingo Molnar Jul 10, 2016

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>

parent 2e9d1e15

arch/x86/entry/common.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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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