Messages in this thread Patch in this message | | | From | Ingo Molnar <> | Subject | [PATCH 057/208] x86/fpu: Use 'struct fpu' in fpu_lazy_restore() | Date | Tue, 5 May 2015 18:24:37 +0200 |
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Also rename it to fpu_want_lazy_restore(), to better indicate that this function just tests whether we can do a lazy restore. (The old name suggested that it was doing the lazy restore, which is not the case.)
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: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/include/asm/fpu-internal.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h index 76a1f3529881..3f6d36c6ffce 100644 --- a/arch/x86/include/asm/fpu-internal.h +++ b/arch/x86/include/asm/fpu-internal.h @@ -74,10 +74,9 @@ static inline void __cpu_disable_lazy_restore(unsigned int cpu) per_cpu(fpu_fpregs_owner_ctx, cpu) = NULL; } -static inline int fpu_lazy_restore(struct task_struct *new, unsigned int cpu) +static inline int fpu_want_lazy_restore(struct fpu *fpu, unsigned int cpu) { - return &new->thread.fpu == this_cpu_read_stable(fpu_fpregs_owner_ctx) && - cpu == new->thread.fpu.last_cpu; + return fpu == this_cpu_read_stable(fpu_fpregs_owner_ctx) && cpu == fpu->last_cpu; } static inline int is_ia32_compat_frame(void) @@ -439,7 +438,7 @@ static inline fpu_switch_t switch_fpu_prepare(struct task_struct *old, struct ta old->thread.fpu.last_cpu = -1; if (fpu.preload) { new->thread.fpu.counter++; - if (fpu_lazy_restore(new, cpu)) + if (fpu_want_lazy_restore(new_fpu, cpu)) fpu.preload = 0; else prefetch(new->thread.fpu.state); -- 2.1.0
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