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Groups > linux.kernel > #1363078

[PATCH] x86, msr, remove unused native_read_tscp()

From Prarit Bhargava <prarit@redhat.com>
Newsgroups linux.kernel
Subject [PATCH] x86, msr, remove unused native_read_tscp()
Date 2016-03-23 00:10 +0100
Message-ID <rfDAZ-310-13@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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After e76b027 ("x86,vdso: Use LSL unconditionally for vgetcpu")
native_read_tscp() is unused in the kernel.  The function can be removed
like native_read_tsc() was.

[prarit@prarit linux]$ git grep native_read_tscp
arch/x86/include/asm/msr.h:45:static inline unsigned long long native_read_tscp(unsigned int *aux)

Cc: x86@kernel.org
Cc: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
---
 arch/x86/include/asm/msr.h |    8 --------
 1 file changed, 8 deletions(-)

diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index 93fb7c1..7a79ee2 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -42,14 +42,6 @@ struct saved_msrs {
 	struct saved_msr *array;
 };
 
-static inline unsigned long long native_read_tscp(unsigned int *aux)
-{
-	unsigned long low, high;
-	asm volatile(".byte 0x0f,0x01,0xf9"
-		     : "=a" (low), "=d" (high), "=c" (*aux));
-	return low | ((u64)high << 32);
-}
-
 /*
  * both i386 and x86_64 returns 64-bit value in edx:eax, but gcc's "A"
  * constraint has different meanings. For i386, "A" means exactly
-- 
1.7.9.3

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Thread

[PATCH] x86, msr, remove unused native_read_tscp() Prarit Bhargava <prarit@redhat.com> - 2016-03-23 00:10 +0100
  Re: [PATCH] x86, msr, remove unused native_read_tscp() Andy Lutomirski <luto@amacapital.net> - 2016-03-23 00:20 +0100
  [tip:x86/urgent] x86/msr: Remove unused native_read_tscp() tip-bot for Prarit Bhargava <tipbot@zytor.com> - 2016-03-23 12:50 +0100

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