mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 12:06:42 +07:00
x86/fpu: Use 'struct fpu' in fpu_lazy_restore()
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: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
parent
eb6a3251bf
commit
66ddc2cb0f
@ -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);
|
||||
|
Loading…
Reference in New Issue
Block a user