x86/fpu: Simplify fpstate_init_curr() usage
authorIngo Molnar <mingo@kernel.org>
Mon, 27 Apr 2015 05:18:17 +0000 (07:18 +0200)
committerIngo Molnar <mingo@kernel.org>
Tue, 19 May 2015 13:47:51 +0000 (15:47 +0200)
commitc4d72e2db3a36bf560b506df8a3490f140aeae26
tree934cc8c80417fb8a5845a3d5f5da1dc4fc819278
parent0ee6a5172573aea06ef41f4e48737dcfab0099bb
x86/fpu: Simplify fpstate_init_curr() usage

Now that fpstate_init_curr() is not doing implicit allocations
anymore, almost all uses of it involve a very simple pattern:

if (!fpu->fpstate_active)
fpstate_init_curr(fpu);

which is basically activating the FPU fpstate if it was not active
before.

So propagate the check into the function itself, and rename the
function according to its new purpose:

fpu__activate_curr(fpu);

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/fpu/internal.h
arch/x86/kernel/fpu/core.c
arch/x86/kernel/fpu/xsave.c
arch/x86/kvm/x86.c
arch/x86/math-emu/fpu_entry.c