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x86/fpu: Simplify kernel_fpu_end()

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Remove two little helpers and merge them into kernel_fpu_end() to
streamline the function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Nicolai Stange <nstange@suse.de>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190604071524.12835-2-hch@lst.de
This commit is contained in:
Christoph Hellwig 2019-06-04 09:15:22 +02:00 committed by Borislav Petkov
parent 9e0babf2c0
commit b78ea19ac2
1 changed files with 3 additions and 12 deletions
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15
arch/x86/kernel/fpu/core.c
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@ -49,12 +49,6 @@ static void kernel_fpu_disable(void)
this_cpu_write(in_kernel_fpu, true); this_cpu_write(in_kernel_fpu, true);
} }
static void kernel_fpu_enable(void)
{
WARN_ON_FPU(!this_cpu_read(in_kernel_fpu));
this_cpu_write(in_kernel_fpu, false);
}
static bool kernel_fpu_disabled(void) static bool kernel_fpu_disabled(void)
{ {
return this_cpu_read(in_kernel_fpu); return this_cpu_read(in_kernel_fpu);
@ -115,11 +109,6 @@ static void __kernel_fpu_begin(void)
__cpu_invalidate_fpregs_state(); __cpu_invalidate_fpregs_state();
} }
static void __kernel_fpu_end(void)
{
kernel_fpu_enable();
}
void kernel_fpu_begin(void) void kernel_fpu_begin(void)
{ {
preempt_disable(); preempt_disable();
@ -129,7 +118,9 @@ EXPORT_SYMBOL_GPL(kernel_fpu_begin);
void kernel_fpu_end(void) void kernel_fpu_end(void)
{ {
__kernel_fpu_end(); WARN_ON_FPU(!this_cpu_read(in_kernel_fpu));
this_cpu_write(in_kernel_fpu, false);
preempt_enable(); preempt_enable();
} }
EXPORT_SYMBOL_GPL(kernel_fpu_end); EXPORT_SYMBOL_GPL(kernel_fpu_end);