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[SPARC]: Fix TIF_USEDFPU flag atomicity

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From: William Lee Irwin III <wli@holomorphy.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
William Lee Irwin III
2007-03-12 17:08:25 -07:00
committed by David S. Miller
parent c0a79b229a
commit 54f565ea89
2 changed files with 11 additions and 11 deletions
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6
arch/sparc/kernel/traps.c
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@@ -259,7 +259,7 @@ void do_fpd_trap(struct pt_regs *regs, unsigned long pc, unsigned long npc,
} else {
fpload(&current->thread.float_regs[0], &current->thread.fsr);
}
current_thread_info()->flags |= _TIF_USEDFPU;
set_thread_flag(TIF_USEDFPU);
#endif
}
@@ -290,7 +290,7 @@ void do_fpe_trap(struct pt_regs *regs, unsigned long pc, unsigned long npc,
#ifndef CONFIG_SMP
if(!fpt) {
#else
if(!(task_thread_info(fpt)->flags & _TIF_USEDFPU)) {
if (!test_tsk_thread_flag(fpt, TIF_USEDFPU)) {
#endif
fpsave(&fake_regs[0], &fake_fsr, &fake_queue[0], &fake_depth);
regs->psr &= ~PSR_EF;
@@ -333,7 +333,7 @@ void do_fpe_trap(struct pt_regs *regs, unsigned long pc, unsigned long npc,
/* nope, better SIGFPE the offending process... */
#ifdef CONFIG_SMP
task_thread_info(fpt)->flags &= ~_TIF_USEDFPU;
clear_tsk_thread_flag(fpt, TIF_USEDFPU);
#endif
if(psr & PSR_PS) {
/* The first fsr store/load we tried trapped,