diff options
Diffstat (limited to 'arch/cris')
| -rw-r--r-- | arch/cris/Kconfig | 1 | ||||
| -rw-r--r-- | arch/cris/arch-v10/kernel/signal.c | 50 | ||||
| -rw-r--r-- | arch/cris/arch-v32/kernel/signal.c | 66 | ||||
| -rw-r--r-- | arch/cris/arch-v32/kernel/smp.c | 14 | ||||
| -rw-r--r-- | arch/cris/include/asm/processor.h | 9 | ||||
| -rw-r--r-- | arch/cris/include/asm/thread_info.h | 6 | ||||
| -rw-r--r-- | arch/cris/kernel/process.c | 28 |
7 files changed, 37 insertions, 137 deletions
diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig index 4a63e7e..22d34d6 100644 --- a/arch/cris/Kconfig +++ b/arch/cris/Kconfig @@ -43,6 +43,7 @@ config CRIS select HAVE_GENERIC_HARDIRQS select GENERIC_IRQ_SHOW select GENERIC_IOMAP + select GENERIC_SMP_IDLE_THREAD if ETRAX_ARCH_V32 select GENERIC_CMOS_UPDATE config HZ diff --git a/arch/cris/arch-v10/kernel/signal.c b/arch/cris/arch-v10/kernel/signal.c index 289c584..e16f8f2 100644 --- a/arch/cris/arch-v10/kernel/signal.c +++ b/arch/cris/arch-v10/kernel/signal.c @@ -48,19 +48,11 @@ void do_signal(int canrestart, struct pt_regs *regs); * dummy arguments to be able to reach the regs argument. (Note that this * arrangement relies on old_sigset_t occupying one register.) */ -int sys_sigsuspend(old_sigset_t mask, long r11, long r12, long r13, long mof, - long srp, struct pt_regs *regs) +int sys_sigsuspend(old_sigset_t mask) { - mask &= _BLOCKABLE; - spin_lock_irq(¤t->sighand->siglock); - current->saved_sigmask = current->blocked; - siginitset(¤t->blocked, mask); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - current->state = TASK_INTERRUPTIBLE; - schedule(); - set_thread_flag(TIF_RESTORE_SIGMASK); - return -ERESTARTNOHAND; + sigset_t blocked; + siginitset(&blocked, mask); + return sigsuspend(&blocked); } int sys_sigaction(int sig, const struct old_sigaction __user *act, @@ -73,10 +65,10 @@ int sys_sigaction(int sig, const struct old_sigaction __user *act, old_sigset_t mask; if (!access_ok(VERIFY_READ, act, sizeof(*act)) || __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer)) + __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || + __get_user(new_ka.sa.sa_flags, &act->sa_flags) || + __get_user(mask, &act->sa_mask)) return -EFAULT; - __get_user(new_ka.sa.sa_flags, &act->sa_flags); - __get_user(mask, &act->sa_mask); siginitset(&new_ka.sa.sa_mask, mask); } @@ -85,10 +77,10 @@ int sys_sigaction(int sig, const struct old_sigaction __user *act, if (!ret && oact) { if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer)) + __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || + __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || + __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) return -EFAULT; - __put_user(old_ka.sa.sa_flags, &oact->sa_flags); - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); } return ret; @@ -185,10 +177,7 @@ asmlinkage int sys_sigreturn(long r10, long r11, long r12, long r13, long mof, goto badframe; sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); if (restore_sigcontext(regs, &frame->sc)) goto badframe; @@ -224,10 +213,7 @@ asmlinkage int sys_rt_sigreturn(long r10, long r11, long r12, long r13, goto badframe; sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); if (restore_sigcontext(regs, &frame->uc.uc_mcontext)) goto badframe; @@ -469,15 +455,9 @@ static inline int handle_signal(int canrestart, unsigned long sig, else ret = setup_frame(sig, ka, oldset, regs); - if (ret == 0) { - spin_lock_irq(¤t->sighand->siglock); - sigorsets(¤t->blocked, ¤t->blocked, - &ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked, sig); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - } + if (ret == 0) + block_sigmask(ka, sig); + return ret; } diff --git a/arch/cris/arch-v32/kernel/signal.c b/arch/cris/arch-v32/kernel/signal.c index ce4ab1a..b338d8f 100644 --- a/arch/cris/arch-v32/kernel/signal.c +++ b/arch/cris/arch-v32/kernel/signal.c @@ -59,19 +59,11 @@ void keep_debug_flags(unsigned long oldccs, unsigned long oldspc, * dummy arguments to be able to reach the regs argument. */ int -sys_sigsuspend(old_sigset_t mask, long r11, long r12, long r13, long mof, - long srp, struct pt_regs *regs) +sys_sigsuspend(old_sigset_t mask) { - mask &= _BLOCKABLE; - spin_lock_irq(¤t->sighand->siglock); - current->saved_sigmask = current->blocked; - siginitset(¤t->blocked, mask); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - current->state = TASK_INTERRUPTIBLE; - schedule(); - set_thread_flag(TIF_RESTORE_SIGMASK); - return -ERESTARTNOHAND; + sigset_t blocked; + siginitset(&blocked, mask); + return sigsuspend(&blocked); } int @@ -87,11 +79,11 @@ sys_sigaction(int signal, const struct old_sigaction *act, if (!access_ok(VERIFY_READ, act, sizeof(*act)) || __get_user(newk.sa.sa_handler, &act->sa_handler) || - __get_user(newk.sa.sa_restorer, &act->sa_restorer)) + __get_user(newk.sa.sa_restorer, &act->sa_restorer) || + __get_user(newk.sa.sa_flags, &act->sa_flags) || + __get_user(mask, &act->sa_mask)) return -EFAULT; - __get_user(newk.sa.sa_flags, &act->sa_flags); - __get_user(mask, &act->sa_mask); siginitset(&newk.sa.sa_mask, mask); } @@ -100,11 +92,11 @@ sys_sigaction(int signal, const struct old_sigaction *act, if (!retval && oact) { if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || __put_user(oldk.sa.sa_handler, &oact->sa_handler) || - __put_user(oldk.sa.sa_restorer, &oact->sa_restorer)) + __put_user(oldk.sa.sa_restorer, &oact->sa_restorer) || + __put_user(oldk.sa.sa_flags, &oact->sa_flags) || + __put_user(oldk.sa.sa_mask.sig[0], &oact->sa_mask)) return -EFAULT; - __put_user(oldk.sa.sa_flags, &oact->sa_flags); - __put_user(oldk.sa.sa_mask.sig[0], &oact->sa_mask); } return retval; @@ -176,12 +168,7 @@ sys_sigreturn(long r10, long r11, long r12, long r13, long mof, long srp, goto badframe; sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - - current->blocked = set; - - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); if (restore_sigcontext(regs, &frame->sc)) goto badframe; @@ -222,12 +209,7 @@ sys_rt_sigreturn(long r10, long r11, long r12, long r13, long mof, long srp, goto badframe; sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - - current->blocked = set; - - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); if (restore_sigcontext(regs, &frame->uc.uc_mcontext)) goto badframe; @@ -363,10 +345,7 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, return 0; give_sigsegv: - if (sig == SIGSEGV) - ka->sa.sa_handler = SIG_DFL; - - force_sig(SIGSEGV, current); + force_sigsegv(sig, current); return -EFAULT; } @@ -450,10 +429,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, return 0; give_sigsegv: - if (sig == SIGSEGV) - ka->sa.sa_handler = SIG_DFL; - - force_sig(SIGSEGV, current); + force_sigsegv(sig, current); return -EFAULT; } @@ -512,18 +488,8 @@ handle_signal(int canrestart, unsigned long sig, else ret = setup_frame(sig, ka, oldset, regs); - if (ka->sa.sa_flags & SA_ONESHOT) - ka->sa.sa_handler = SIG_DFL; - - if (ret == 0) { - spin_lock_irq(¤t->sighand->siglock); - sigorsets(¤t->blocked, ¤t->blocked, - &ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked, sig); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - } + if (ret == 0) + block_sigmask(ka, sig); return ret; } diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c index 0b99df7..ebe2cb3 100644 --- a/arch/cris/arch-v32/kernel/smp.c +++ b/arch/cris/arch-v32/kernel/smp.c @@ -108,17 +108,12 @@ void __init smp_cpus_done(unsigned int max_cpus) /* Bring one cpu online.*/ static int __init -smp_boot_one_cpu(int cpuid) +smp_boot_one_cpu(int cpuid, struct task_struct idle) { unsigned timeout; - struct task_struct *idle; cpumask_t cpu_mask; cpumask_clear(&cpu_mask); - idle = fork_idle(cpuid); - if (IS_ERR(idle)) - panic("SMP: fork failed for CPU:%d", cpuid); - task_thread_info(idle)->cpu = cpuid; /* Information to the CPU that is about to boot */ @@ -142,9 +137,6 @@ smp_boot_one_cpu(int cpuid) barrier(); } - put_task_struct(idle); - idle = NULL; - printk(KERN_CRIT "SMP: CPU:%d is stuck.\n", cpuid); return -1; } @@ -207,9 +199,9 @@ int setup_profiling_timer(unsigned int multiplier) */ unsigned long cache_decay_ticks = 1; -int __cpuinit __cpu_up(unsigned int cpu) +int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle) { - smp_boot_one_cpu(cpu); + smp_boot_one_cpu(cpu, tidle); return cpu_online(cpu) ? 0 : -ENOSYS; } diff --git a/arch/cris/include/asm/processor.h b/arch/cris/include/asm/processor.h index 4210d72..ef4e1bc 100644 --- a/arch/cris/include/asm/processor.h +++ b/arch/cris/include/asm/processor.h @@ -25,13 +25,12 @@ struct task_struct; */ #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3)) -/* THREAD_SIZE is the size of the task_struct/kernel_stack combo. +/* THREAD_SIZE is the size of the thread_info/kernel_stack combo. * normally, the stack is found by doing something like p + THREAD_SIZE * in CRIS, a page is 8192 bytes, which seems like a sane size */ - #define THREAD_SIZE PAGE_SIZE -#define KERNEL_STACK_SIZE PAGE_SIZE +#define THREAD_SIZE_ORDER (0) /* * At user->kernel entry, the pt_regs struct is stacked on the top of the kernel-stack. @@ -50,10 +49,6 @@ struct task_struct; #define task_pt_regs(task) user_regs(task_thread_info(task)) #define current_regs() task_pt_regs(current) -static inline void prepare_to_copy(struct task_struct *tsk) -{ -} - extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); unsigned long get_wchan(struct task_struct *p); diff --git a/arch/cris/include/asm/thread_info.h b/arch/cris/include/asm/thread_info.h index 29b9288..5b1c448 100644 --- a/arch/cris/include/asm/thread_info.h +++ b/arch/cris/include/asm/thread_info.h @@ -65,12 +65,6 @@ struct thread_info { #define init_thread_info (init_thread_union.thread_info) -#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR -/* thread information allocation */ -#define alloc_thread_info_node(tsk, node) \ - ((struct thread_info *) __get_free_pages(GFP_KERNEL, 1)) -#define free_thread_info(ti) free_pages((unsigned long) (ti), 1) - #endif /* !__ASSEMBLY__ */ /* diff --git a/arch/cris/kernel/process.c b/arch/cris/kernel/process.c index 891dad8..66fd017 100644 --- a/arch/cris/kernel/process.c +++ b/arch/cris/kernel/process.c @@ -29,34 +29,6 @@ //#define DEBUG /* - * Initial task structure. Make this a per-architecture thing, - * because different architectures tend to have different - * alignment requirements and potentially different initial - * setup. - */ - -static struct signal_struct init_signals = INIT_SIGNALS(init_signals); -static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -/* - * Initial thread structure. - * - * We need to make sure that this is 8192-byte aligned due to the - * way process stacks are handled. This is done by having a special - * "init_task" linker map entry.. - */ -union thread_union init_thread_union __init_task_data = - { INIT_THREAD_INFO(init_task) }; - -/* - * Initial task structure. - * - * All other task structs will be allocated on slabs in fork.c - */ -struct task_struct init_task = INIT_TASK(init_task); - -EXPORT_SYMBOL(init_task); - -/* * The hlt_counter, disable_hlt and enable_hlt is just here as a hook if * there would ever be a halt sequence (for power save when idle) with * some largish delay when halting or resuming *and* a driver that can't |
