• Ingo Molnar's avatar
    x86/fpu: Rename fpu::fpstate_active to fpu::initialized · e4a81bfc
    Ingo Molnar authored
    The x86 FPU code used to have a complex state machine where both the FPU
    registers and the FPU state context could be 'active' (or inactive)
    independently of each other - which enabled features like lazy FPU restore.
    
    Much of this complexity is gone in the current code: now we basically can
    have FPU-less tasks (kernel threads) that don't use (and save/restore) FPU
    state at all, plus full FPU users that save/restore directly with no laziness
    whatsoever.
    
    But the fpu::fpstate_active still carries bits of the old complexity - meanwhile
    this flag has become a simple flag that shows whether the FPU context saving
    area in the thread struct is initialized and used, or not.
    
    Rename it to fpu::initialized to express this simplicity in the name as well.
    
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Andy Lutomirski <luto@amacapital.net>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Dave Hansen <dave.hansen@linux.intel.com>
    Cc: Eric Biggers <ebiggers3@gmail.com>
    Cc: Fenghua Yu <fenghua.yu@intel.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Oleg Nesterov <oleg@redhat.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Rik van Riel <riel@redhat.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
    Link: http://lkml.kernel.org/r/20170923130016.21448-30-mingo@kernel.orgSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
    e4a81bfc
fpu.h 2.22 KB