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[MIPS] SMTC: Fix holes in SMTC and FPU affinity support.

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Signed-off-by: Kevin D. Kissell <kevink@paralogos.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Kevin D. Kissell
2008-09-09 21:33:36 +02:00
committed by Ralf Baechle
parent 498a863fdf
commit 9cc123631b
3 changed files with 14 additions and 13 deletions
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19
arch/mips/kernel/process.c
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@@ -55,7 +55,7 @@ void __noreturn cpu_idle(void)
while (1) {
tick_nohz_stop_sched_tick(1);
while (!need_resched()) {
#ifdef CONFIG_SMTC_IDLE_HOOK_DEBUG
#ifdef CONFIG_MIPS_MT_SMTC
extern void smtc_idle_loop_hook(void);
smtc_idle_loop_hook();
@@ -145,19 +145,18 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
*/
p->thread.cp0_status = read_c0_status() & ~(ST0_CU2|ST0_CU1);
childregs->cp0_status &= ~(ST0_CU2|ST0_CU1);
#ifdef CONFIG_MIPS_MT_SMTC
/*
* SMTC restores TCStatus after Status, and the CU bits
* are aliased there.
*/
childregs->cp0_tcstatus &= ~(ST0_CU2|ST0_CU1);
#endif
clear_tsk_thread_flag(p, TIF_USEDFPU);
#ifdef CONFIG_MIPS_MT_FPAFF
clear_tsk_thread_flag(p, TIF_FPUBOUND);
/*
* FPU affinity support is cleaner if we track the
* user-visible CPU affinity from the very beginning.
* The generic cpus_allowed mask will already have
* been copied from the parent before copy_thread
* is invoked.
*/
p->thread.user_cpus_allowed = p->cpus_allowed;
#endif /* CONFIG_MIPS_MT_FPAFF */
if (clone_flags & CLONE_SETTLS)