linux-kernel - [PATCH 12/17] x86/tsc: Remove rdtscl()

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Message-Id: <c460502dd7a2f6d10fe1dc8fcebe958d53c6cef0.1434152192.git.luto@kernel.org>
Date:	Fri, 12 Jun 2015 16:41:46 -0700
From:	Andy Lutomirski <luto@...nel.org>
To:	x86@...nel.org
Cc:	Borislav Petkov <bp@...e.de>,
	Peter Zijlstra <peterz@...radead.org>,
	John Stultz <john.stultz@...aro.org>,
	linux-kernel@...r.kernel.org, Len Brown <lenb@...nel.org>,
	Huang Rui <ray.huang@....com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Andy Lutomirski <luto@...nel.org>
Subject: [PATCH 12/17] x86/tsc: Remove rdtscl()

It has no more callers, and it was never a very sensible interface
to begin with.  Users of the TSC should either read all 64 bits or
explicitly throw out the high bits.

Signed-off-by: Andy Lutomirski <luto@...nel.org>
---
 arch/x86/include/asm/msr.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index 626f78199665..c89ed6ceed02 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -189,9 +189,6 @@ do {							\
 
 #endif	/* !CONFIG_PARAVIRT */
 
-#define rdtscl(low)						\
-	((low) = (u32)native_read_tsc())
-
 /*
  * 64-bit version of wrmsr_safe():
  */
-- 
2.4.2

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