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author | Ingo Molnar <mingo@kernel.org> | 2015-04-23 17:52:36 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2015-05-19 15:47:28 +0200 |
commit | a4d8fc2e0652613426920aac429541127f8b26d8 (patch) | |
tree | 0994bb4c74aad79a2d16513bc1b1b410ffc5e383 | |
parent | 2d75bcf31470b15205f915aae725a284bc8f2da8 (diff) | |
download | linux-a4d8fc2e0652613426920aac429541127f8b26d8.tar.bz2 |
x86/fpu: Use 'struct fpu' in __fpu_save()
Migrate this function to pure 'struct fpu' usage.
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>
-rw-r--r-- | arch/x86/kernel/fpu/core.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 9db4ef349c19..7c0530082253 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -125,15 +125,15 @@ void __kernel_fpu_end(void) } EXPORT_SYMBOL(__kernel_fpu_end); -static void __save_fpu(struct task_struct *tsk) +static void __save_fpu(struct fpu *fpu) { if (use_xsave()) { if (unlikely(system_state == SYSTEM_BOOTING)) - xsave_state_booting(&tsk->thread.fpu.state->xsave); + xsave_state_booting(&fpu->state->xsave); else - xsave_state(&tsk->thread.fpu.state->xsave); + xsave_state(&fpu->state->xsave); } else { - fpu_fxsave(&tsk->thread.fpu); + fpu_fxsave(fpu); } } @@ -151,7 +151,7 @@ void fpu__save(struct task_struct *tsk) preempt_disable(); if (fpu->has_fpu) { if (use_eager_fpu()) { - __save_fpu(tsk); + __save_fpu(fpu); } else { fpu_save_init(fpu); __thread_fpu_end(fpu); @@ -231,17 +231,17 @@ EXPORT_SYMBOL_GPL(fpstate_free); */ static void fpu_copy(struct task_struct *dst, struct task_struct *src) { + struct fpu *dst_fpu = &dst->thread.fpu; + struct fpu *src_fpu = &src->thread.fpu; + WARN_ON(src != current); if (use_eager_fpu()) { memset(&dst->thread.fpu.state->xsave, 0, xstate_size); - __save_fpu(dst); + __save_fpu(dst_fpu); } else { - struct fpu *dfpu = &dst->thread.fpu; - struct fpu *sfpu = &src->thread.fpu; - fpu__save(src); - memcpy(dfpu->state, sfpu->state, xstate_size); + memcpy(dst_fpu->state, src_fpu->state, xstate_size); } } |