diff options
Diffstat (limited to 'arch/sparc64/kernel')
| -rw-r--r-- | arch/sparc64/kernel/iommu_common.h | 2 | ||||
| -rw-r--r-- | arch/sparc64/kernel/irq.c | 10 | ||||
| -rw-r--r-- | arch/sparc64/kernel/kprobes.c | 11 | ||||
| -rw-r--r-- | arch/sparc64/kernel/ldc.c | 38 | ||||
| -rw-r--r-- | arch/sparc64/kernel/process.c | 2 | ||||
| -rw-r--r-- | arch/sparc64/kernel/sys_sparc.c | 2 | ||||
| -rw-r--r-- | arch/sparc64/kernel/systbls.S | 6 | ||||
| -rw-r--r-- | arch/sparc64/kernel/time.c | 15 |
8 files changed, 50 insertions, 36 deletions
diff --git a/arch/sparc64/kernel/iommu_common.h b/arch/sparc64/kernel/iommu_common.h index f3575a614fa..53b19c8231a 100644 --- a/arch/sparc64/kernel/iommu_common.h +++ b/arch/sparc64/kernel/iommu_common.h @@ -23,7 +23,7 @@ #define IO_PAGE_SHIFT 13 #define IO_PAGE_SIZE (1UL << IO_PAGE_SHIFT) #define IO_PAGE_MASK (~(IO_PAGE_SIZE-1)) -#define IO_PAGE_ALIGN(addr) (((addr)+IO_PAGE_SIZE-1)&IO_PAGE_MASK) +#define IO_PAGE_ALIGN(addr) ALIGN(addr, IO_PAGE_SIZE) #define IO_TSB_ENTRIES (128*1024) #define IO_TSB_SIZE (IO_TSB_ENTRIES * 8) diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c index b441a26b73b..c481673d249 100644 --- a/arch/sparc64/kernel/irq.c +++ b/arch/sparc64/kernel/irq.c @@ -621,8 +621,9 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino) unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino) { struct irq_handler_data *data; - struct ino_bucket *bucket; unsigned long hv_err, cookie; + struct ino_bucket *bucket; + struct irq_desc *desc; unsigned int virt_irq; bucket = kzalloc(sizeof(struct ino_bucket), GFP_ATOMIC); @@ -643,6 +644,13 @@ unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino) if (unlikely(!data)) return 0; + /* In order to make the LDC channel startup sequence easier, + * especially wrt. locking, we do not let request_irq() enable + * the interrupt. + */ + desc = irq_desc + virt_irq; + desc->status |= IRQ_NOAUTOEN; + set_irq_chip_data(virt_irq, data); /* Catch accidental accesses to these things. IMAP/ICLR handling diff --git a/arch/sparc64/kernel/kprobes.c b/arch/sparc64/kernel/kprobes.c index f43b5d75535..201a6e547e4 100644 --- a/arch/sparc64/kernel/kprobes.c +++ b/arch/sparc64/kernel/kprobes.c @@ -478,9 +478,9 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs) return 0; } -/* Called with kretprobe_lock held. The value stored in the return - * address register is actually 2 instructions before where the - * callee will return to. Sequences usually look something like this +/* The value stored in the return address register is actually 2 + * instructions before where the callee will return to. + * Sequences usually look something like this * * call some_function <--- return register points here * nop <--- call delay slot @@ -512,8 +512,7 @@ int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs) unsigned long trampoline_address =(unsigned long)&kretprobe_trampoline; INIT_HLIST_HEAD(&empty_rp); - spin_lock_irqsave(&kretprobe_lock, flags); - head = kretprobe_inst_table_head(current); + kretprobe_hash_lock(current, &head, &flags); /* * It is possible to have multiple instances associated with a given @@ -553,7 +552,7 @@ int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs) regs->tnpc = orig_ret_address + 4; reset_current_kprobe(); - spin_unlock_irqrestore(&kretprobe_lock, flags); + kretprobe_hash_unlock(current, &flags); preempt_enable_no_resched(); hlist_for_each_entry_safe(ri, node, tmp, &empty_rp, hlist) { diff --git a/arch/sparc64/kernel/ldc.c b/arch/sparc64/kernel/ldc.c index 63969f61028..d68982330f6 100644 --- a/arch/sparc64/kernel/ldc.c +++ b/arch/sparc64/kernel/ldc.c @@ -1,6 +1,6 @@ /* ldc.c: Logical Domain Channel link-layer protocol driver. * - * Copyright (C) 2007 David S. Miller <davem@davemloft.net> + * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net> */ #include <linux/kernel.h> @@ -23,8 +23,8 @@ #define DRV_MODULE_NAME "ldc" #define PFX DRV_MODULE_NAME ": " -#define DRV_MODULE_VERSION "1.0" -#define DRV_MODULE_RELDATE "June 25, 2007" +#define DRV_MODULE_VERSION "1.1" +#define DRV_MODULE_RELDATE "July 22, 2008" static char version[] __devinitdata = DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; @@ -1235,13 +1235,9 @@ int ldc_bind(struct ldc_channel *lp, const char *name) unsigned long hv_err, flags; int err = -EINVAL; - spin_lock_irqsave(&lp->lock, flags); - - if (!name) - goto out_err; - - if (lp->state != LDC_STATE_INIT) - goto out_err; + if (!name || + (lp->state != LDC_STATE_INIT)) + return -EINVAL; snprintf(lp->rx_irq_name, LDC_IRQ_NAME_MAX, "%s RX", name); snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name); @@ -1250,25 +1246,32 @@ int ldc_bind(struct ldc_channel *lp, const char *name) IRQF_SAMPLE_RANDOM | IRQF_SHARED, lp->rx_irq_name, lp); if (err) - goto out_err; + return err; err = request_irq(lp->cfg.tx_irq, ldc_tx, IRQF_SAMPLE_RANDOM | IRQF_SHARED, lp->tx_irq_name, lp); - if (err) - goto out_free_rx_irq; + if (err) { + free_irq(lp->cfg.rx_irq, lp); + return err; + } + + spin_lock_irqsave(&lp->lock, flags); + + enable_irq(lp->cfg.rx_irq); + enable_irq(lp->cfg.tx_irq); lp->flags |= LDC_FLAG_REGISTERED_IRQS; err = -ENODEV; hv_err = sun4v_ldc_tx_qconf(lp->id, 0, 0); if (hv_err) - goto out_free_tx_irq; + goto out_free_irqs; hv_err = sun4v_ldc_tx_qconf(lp->id, lp->tx_ra, lp->tx_num_entries); if (hv_err) - goto out_free_tx_irq; + goto out_free_irqs; hv_err = sun4v_ldc_rx_qconf(lp->id, 0, 0); if (hv_err) @@ -1304,14 +1307,11 @@ out_unmap_rx: out_unmap_tx: sun4v_ldc_tx_qconf(lp->id, 0, 0); -out_free_tx_irq: +out_free_irqs: lp->flags &= ~LDC_FLAG_REGISTERED_IRQS; free_irq(lp->cfg.tx_irq, lp); - -out_free_rx_irq: free_irq(lp->cfg.rx_irq, lp); -out_err: spin_unlock_irqrestore(&lp->lock, flags); return err; diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c index 31ea752d307..8a9cd3e165b 100644 --- a/arch/sparc64/kernel/process.c +++ b/arch/sparc64/kernel/process.c @@ -96,7 +96,7 @@ void cpu_idle(void) set_thread_flag(TIF_POLLING_NRFLAG); while(1) { - tick_nohz_stop_sched_tick(); + tick_nohz_stop_sched_tick(1); while (!need_resched() && !cpu_is_offline(cpu)) sparc64_yield(cpu); diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c index e1f4eba2e57..39749e32dc7 100644 --- a/arch/sparc64/kernel/sys_sparc.c +++ b/arch/sparc64/kernel/sys_sparc.c @@ -418,7 +418,7 @@ asmlinkage long sparc_pipe(struct pt_regs *regs) int fd[2]; int error; - error = do_pipe(fd); + error = do_pipe_flags(fd, 0); if (error) goto out; regs->u_regs[UREG_I1] = fd[1]; diff --git a/arch/sparc64/kernel/systbls.S b/arch/sparc64/kernel/systbls.S index 8b5282d433c..1095bf4c510 100644 --- a/arch/sparc64/kernel/systbls.S +++ b/arch/sparc64/kernel/systbls.S @@ -81,7 +81,8 @@ sys_call_table32: /*300*/ .word compat_sys_set_robust_list, compat_sys_get_robust_list, compat_sys_migrate_pages, compat_sys_mbind, compat_sys_get_mempolicy .word compat_sys_set_mempolicy, compat_sys_kexec_load, compat_sys_move_pages, sys_getcpu, compat_sys_epoll_pwait /*310*/ .word compat_sys_utimensat, compat_sys_signalfd, sys_timerfd_create, sys_eventfd, compat_sys_fallocate - .word compat_sys_timerfd_settime, compat_sys_timerfd_gettime + .word compat_sys_timerfd_settime, compat_sys_timerfd_gettime, compat_sys_signalfd4, sys_eventfd2, sys_epoll_create1 +/*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1 #endif /* CONFIG_COMPAT */ @@ -154,4 +155,5 @@ sys_call_table: /*300*/ .word sys_set_robust_list, sys_get_robust_list, sys_migrate_pages, sys_mbind, sys_get_mempolicy .word sys_set_mempolicy, sys_kexec_load, sys_move_pages, sys_getcpu, sys_epoll_pwait /*310*/ .word sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate - .word sys_timerfd_settime, sys_timerfd_gettime + .word sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1 +/*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1 diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c index bedc4c159b1..a0c6a97eec6 100644 --- a/arch/sparc64/kernel/time.c +++ b/arch/sparc64/kernel/time.c @@ -884,6 +884,16 @@ static struct notifier_block sparc64_cpufreq_notifier_block = { .notifier_call = sparc64_cpufreq_notifier }; +static int __init register_sparc64_cpufreq_notifier(void) +{ + + cpufreq_register_notifier(&sparc64_cpufreq_notifier_block, + CPUFREQ_TRANSITION_NOTIFIER); + return 0; +} + +core_initcall(register_sparc64_cpufreq_notifier); + #endif /* CONFIG_CPU_FREQ */ static int sparc64_next_event(unsigned long delta, @@ -1050,11 +1060,6 @@ void __init time_init(void) sparc64_clockevent.mult, sparc64_clockevent.shift); setup_sparc64_timer(); - -#ifdef CONFIG_CPU_FREQ - cpufreq_register_notifier(&sparc64_cpufreq_notifier_block, - CPUFREQ_TRANSITION_NOTIFIER); -#endif } unsigned long long sched_clock(void) |