x86/fpu: Factor out fpu__flush_thread() from flush_thread()
authorIngo Molnar <mingo@kernel.org>
Wed, 22 Apr 2015 09:52:13 +0000 (11:52 +0200)
committerIngo Molnar <mingo@kernel.org>
Tue, 19 May 2015 13:47:17 +0000 (15:47 +0200)
commit81683cc8277e79decff4d0cf82ae0e17d2fe465f
tree6b5d271fe62cd0016becc0129db4edcc19fc580a
parent11ad19277e025f914518bc2943a240cdd37cf844
x86/fpu: Factor out fpu__flush_thread() from flush_thread()

flush_thread() open codes a lot of FPU internals - create a separate
function for it in fpu/core.c.

Turns out that this does not hurt performance:

   text    data     bss     dec     hex filename
   11843039        1884440 1130496 14857975         e2b6f7 vmlinux.before
   11843039        1884440 1130496 14857975         e2b6f7 vmlinux.after

and since this is a slowpath clarity comes first anyway.

We can reconsider inlining decisions after the FPU code has been cleaned up.

Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/include/asm/i387.h
arch/x86/kernel/fpu/core.c
arch/x86/kernel/process.c