Ingo Molnar c5bedc6847 x86/fpu: Get rid of PF_USED_MATH usage, convert it to fpu->fpstate_active ... Introduce a simple fpu->fpstate_active flag in the fpu context data structure and use that instead of PF_USED_MATH in task->flags. Testing for this flag byte should be slightly more efficient than testing a bit in a bitmask, but the main advantage is that most FPU functions can now be performed on a 'struct fpu' alone, they don't need access to 'struct task_struct' anymore. There's a slight linecount increase, mostly due to the 'fpu' local variables and due to extra comments. The local variables will go away once we move most of the FPU methods to pure 'struct fpu' parameters. 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>		2015-05-19 15:47:25 +02:00
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asm	x86/fpu: Get rid of PF_USED_MATH usage, convert it to fpu->fpstate_active	2015-05-19 15:47:25 +02:00
uapi/asm	Char/Misc driver patches for 4.1-rc1	2015-04-21 09:42:58 -07:00