[PATCH 2/2] x86/entry: Inline enter_from_user_mode

From	Paolo Bonzini <pbonzini@redhat.com>
Newsgroups	linux.kernel
Subject	[PATCH 2/2] x86/entry: Inline enter_from_user_mode
Date	2016-06-20 17:10 +0200
Message-ID	<rM8ZQ-1ph-3@gated-at.bofh.it> (permalink)
References	<rM8ZQ-1ph-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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.

Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 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 618bc61d35b7..9e1e27d31c6d 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();
-- 
1.8.3.1

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[PATCH 2/2] x86/entry: Inline enter_from_user_mode Paolo Bonzini <pbonzini@redhat.com> - 2016-06-20 17:10 +0200
  Re: [PATCH 2/2] x86/entry: Inline enter_from_user_mode Rik van Riel <riel@redhat.com> - 2016-06-20 22:30 +0200

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