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 <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Fenghua Yu <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Thomas Gleixner <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> --- 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 [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
