Open code the PF_USED_MATH logic, to make the logic more obvious.
(We'll slowly convert the other users of *_used_math() methods as well.)
Reviewed-by: Borislav Petkov <b...@alien8.de>
Cc: Andy Lutomirski <l...@amacapital.net>
Cc: Dave Hansen <dave.han...@linux.intel.com>
Cc: Fenghua Yu <fenghua...@intel.com>
Cc: H. Peter Anvin <h...@zytor.com>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Cc: Oleg Nesterov <o...@redhat.com>
Cc: Thomas Gleixner <t...@linutronix.de>
Signed-off-by: Ingo Molnar <mi...@kernel.org>
---
arch/x86/kernel/i387.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
index 76006a701dbb..5e4dae70ffa5 100644
--- a/arch/x86/kernel/i387.c
+++ b/arch/x86/kernel/i387.c
@@ -290,7 +290,7 @@ static int fpu__unlazy_stopped(struct task_struct *child)
if (WARN_ON_ONCE(child == current))
return -EINVAL;
- if (tsk_used_math(child)) {
+ if (child->flags & PF_USED_MATH) {
task_disable_lazy_fpu_restore(child);
return 0;
}
@@ -304,7 +304,9 @@ static int fpu__unlazy_stopped(struct task_struct *child)
fpu_finit(&child->thread.fpu);
- set_stopped_child_used_math(child);
+ /* Safe to do for stopped child tasks: */
+ child->flags |= PF_USED_MATH;
+
return 0;
}
--
2.1.0
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
