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| author | Alexander van Heukelum <heukelum@mailshack.com> | 2008-10-03 23:16:12 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-13 10:33:22 +0200 |
| commit | 091d30c8f7744f43b0bb507fd30ceb95f9ff9e1b (patch) | |
| tree | 277346d53056a92013f9c01260cc23617dd1cc33 /arch/x86/kernel/traps_64.c | |
| parent | traps: x86: converge trap_init functions (diff) | |
| download | linux-091d30c8f7744f43b0bb507fd30ceb95f9ff9e1b.tar.xz linux-091d30c8f7744f43b0bb507fd30ceb95f9ff9e1b.zip | |
traps: x86_64: make math_state_restore more like i386
- rename variable me -> tsk
- get thread and tsk like i386
- expand used_math()
- copy comment
Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/traps_64.c')
| -rw-r--r-- | arch/x86/kernel/traps_64.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/x86/kernel/traps_64.c b/arch/x86/kernel/traps_64.c index ea091dfe0cd3..00406c99aee4 100644 --- a/arch/x86/kernel/traps_64.c +++ b/arch/x86/kernel/traps_64.c @@ -604,14 +604,15 @@ asmlinkage void __attribute__((weak)) mce_threshold_interrupt(void) */ asmlinkage void math_state_restore(void) { - struct task_struct *me = current; + struct thread_info *thread = current_thread_info(); + struct task_struct *tsk = thread->task; - if (!used_math()) { + if (!tsk_used_math(tsk)) { local_irq_enable(); /* * does a slab alloc which can sleep */ - if (init_fpu(me)) { + if (init_fpu(tsk)) { /* * ran out of memory! */ @@ -625,13 +626,13 @@ asmlinkage void math_state_restore(void) /* * Paranoid restore. send a SIGSEGV if we fail to restore the state. */ - if (unlikely(restore_fpu_checking(me))) { + if (unlikely(restore_fpu_checking(tsk))) { stts(); - force_sig(SIGSEGV, me); + force_sig(SIGSEGV, tsk); return; } - task_thread_info(me)->status |= TS_USEDFPU; - me->fpu_counter++; + thread->status |= TS_USEDFPU; /* So we fnsave on switch_to() */ + tsk->fpu_counter++; } EXPORT_SYMBOL_GPL(math_state_restore); |