diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-07-10 08:17:14 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-10 08:17:14 +0200 |
| commit | 9e4144abf8a30ae221311368bbb10690ebdb4b76 (patch) | |
| tree | 032289d5b7d87976675c1a1a32d512a44d234fa2 /arch/x86/kernel/process_32.c | |
| parent | e17ba73b0ee6c0f24393c48b455e0d8db761782c (diff) | |
| parent | 6329d3021bcfa9038621e6e917d98929421d8ec8 (diff) | |
Merge branch 'linus' into core/printk
Conflicts:
kernel/printk.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/process_32.c')
| -rw-r--r-- | arch/x86/kernel/process_32.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index f8476dfbb60..e2db9ac5c61 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -333,6 +333,7 @@ void flush_thread(void) /* * Forget coprocessor state.. */ + tsk->fpu_counter = 0; clear_fpu(tsk); clear_used_math(); } @@ -649,8 +650,11 @@ struct task_struct * __switch_to(struct task_struct *prev_p, struct task_struct /* If the task has used fpu the last 5 timeslices, just do a full * restore of the math state immediately to avoid the trap; the * chances of needing FPU soon are obviously high now + * + * tsk_used_math() checks prevent calling math_state_restore(), + * which can sleep in the case of !tsk_used_math() */ - if (next_p->fpu_counter > 5) + if (tsk_used_math(next_p) && next_p->fpu_counter > 5) math_state_restore(); /* |