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: [email protected]
Cc: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Signed-off-by: Prarit Bhargava <[email protected]>
---
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
On Tue, Mar 22, 2016 at 4:06 PM, Prarit Bhargava <[email protected]> wrote:
> 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.
Fine with me. We can always re-add it if we need it in the future.
--Andy
Commit-ID: 9da77666d6975219281fd400eb9608a047337414
Gitweb: http://git.kernel.org/tip/9da77666d6975219281fd400eb9608a047337414
Author: Prarit Bhargava <[email protected]>
AuthorDate: Tue, 22 Mar 2016 19:06:08 -0400
Committer: Thomas Gleixner <[email protected]>
CommitDate: Wed, 23 Mar 2016 12:34:17 +0100
x86/msr: Remove unused native_read_tscp()
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.
Signed-off-by: Prarit Bhargava <[email protected]>
Acked-by: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
---
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