diff options
| author | Kevin D. Kissell <kevink@paralogos.com> | 2008-09-09 21:33:36 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-10-03 17:58:58 +0100 |
| commit | 9cc123631b6630948eb5059d218f44424888daa7 (patch) | |
| tree | 686c68fd2e030912bacb32f69d291a97b8621c8f /arch/mips/kernel/process.c | |
| parent | 498a863fdfb3e60d2e0e964cd202c2030bda1005 (diff) | |
[MIPS] SMTC: Fix holes in SMTC and FPU affinity support.
Signed-off-by: Kevin D. Kissell <kevink@paralogos.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/process.c')
| -rw-r--r-- | arch/mips/kernel/process.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index ce7684335a4..22fc19bbe87 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -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) |