diff options
Diffstat (limited to 'arch/ia64/kernel')
| -rw-r--r-- | arch/ia64/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/ia64/kernel/iosapic.c | 60 | ||||
| -rw-r--r-- | arch/ia64/kernel/irq_ia64.c | 5 | ||||
| -rw-r--r-- | arch/ia64/kernel/mca.c | 38 | ||||
| -rw-r--r-- | arch/ia64/kernel/setup.c | 4 | ||||
| -rw-r--r-- | arch/ia64/kernel/stacktrace.c | 39 | ||||
| -rw-r--r-- | arch/ia64/kernel/unwind.c | 23 |
7 files changed, 92 insertions, 78 deletions
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index db10b1e378b..395c2f216dd 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_AUDIT) += audit.o obj-$(CONFIG_PCI_MSI) += msi_ia64.o mca_recovery-y += mca_drv.o mca_drv_asm.o obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o +obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-$(CONFIG_PARAVIRT) += paravirt.o paravirtentry.o \ paravirt_patch.o diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c index 7ded76658d2..22c38404f53 100644 --- a/arch/ia64/kernel/iosapic.c +++ b/arch/ia64/kernel/iosapic.c @@ -108,10 +108,6 @@ #define DBG(fmt...) #endif -#define NR_PREALLOCATE_RTE_ENTRIES \ - (PAGE_SIZE / sizeof(struct iosapic_rte_info)) -#define RTE_PREALLOCATED (1) - static DEFINE_SPINLOCK(iosapic_lock); /* @@ -136,7 +132,6 @@ struct iosapic_rte_info { struct list_head rte_list; /* RTEs sharing the same vector */ char rte_index; /* IOSAPIC RTE index */ int refcnt; /* reference counter */ - unsigned int flags; /* flags */ struct iosapic *iosapic; } ____cacheline_aligned; @@ -155,9 +150,6 @@ static struct iosapic_intr_info { static unsigned char pcat_compat __devinitdata; /* 8259 compatibility flag */ -static int iosapic_kmalloc_ok; -static LIST_HEAD(free_rte_list); - static inline void iosapic_write(struct iosapic *iosapic, unsigned int reg, u32 val) { @@ -394,7 +386,7 @@ iosapic_startup_level_irq (unsigned int irq) } static void -iosapic_end_level_irq (unsigned int irq) +iosapic_unmask_level_irq (unsigned int irq) { ia64_vector vec = irq_to_vector(irq); struct iosapic_rte_info *rte; @@ -404,7 +396,8 @@ iosapic_end_level_irq (unsigned int irq) if (unlikely(irq_desc[irq].status & IRQ_MOVE_PENDING)) { do_unmask_irq = 1; mask_irq(irq); - } + } else + unmask_irq(irq); list_for_each_entry(rte, &iosapic_intr_info[irq].rtes, rte_list) iosapic_eoi(rte->iosapic->addr, vec); @@ -427,9 +420,8 @@ static struct irq_chip irq_type_iosapic_level = { .enable = iosapic_enable_level_irq, .disable = iosapic_disable_level_irq, .ack = iosapic_ack_level_irq, - .end = iosapic_end_level_irq, .mask = mask_irq, - .unmask = unmask_irq, + .unmask = iosapic_unmask_level_irq, .set_affinity = iosapic_set_affinity }; @@ -552,37 +544,6 @@ iosapic_reassign_vector (int irq) } } -static struct iosapic_rte_info * __init_refok iosapic_alloc_rte (void) -{ - int i; - struct iosapic_rte_info *rte; - int preallocated = 0; - - if (!iosapic_kmalloc_ok && list_empty(&free_rte_list)) { - rte = alloc_bootmem(sizeof(struct iosapic_rte_info) * - NR_PREALLOCATE_RTE_ENTRIES); - for (i = 0; i < NR_PREALLOCATE_RTE_ENTRIES; i++, rte++) - list_add(&rte->rte_list, &free_rte_list); - } - - if (!list_empty(&free_rte_list)) { - rte = list_entry(free_rte_list.next, struct iosapic_rte_info, - rte_list); - list_del(&rte->rte_list); - preallocated++; - } else { - rte = kmalloc(sizeof(struct iosapic_rte_info), GFP_ATOMIC); - if (!rte) - return NULL; - } - - memset(rte, 0, sizeof(struct iosapic_rte_info)); - if (preallocated) - rte->flags |= RTE_PREALLOCATED; - - return rte; -} - static inline int irq_is_shared (int irq) { return (iosapic_intr_info[irq].count > 1); @@ -615,7 +576,7 @@ register_intr (unsigned int gsi, int irq, unsigned char delivery, rte = find_rte(irq, gsi); if (!rte) { - rte = iosapic_alloc_rte(); + rte = kzalloc(sizeof (*rte), GFP_ATOMIC); if (!rte) { printk(KERN_WARNING "%s: cannot allocate memory\n", __func__); @@ -658,6 +619,10 @@ register_intr (unsigned int gsi, int irq, unsigned char delivery, idesc->chip->name, irq_type->name); idesc->chip = irq_type; } + if (trigger == IOSAPIC_EDGE) + __set_irq_handler_unlocked(irq, handle_edge_irq); + else + __set_irq_handler_unlocked(irq, handle_level_irq); return 0; } @@ -1161,10 +1126,3 @@ map_iosapic_to_node(unsigned int gsi_base, int node) return; } #endif - -static int __init iosapic_enable_kmalloc (void) -{ - iosapic_kmalloc_ok = 1; - return 0; -} -core_initcall (iosapic_enable_kmalloc); diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c index f14c35f9b03..9a26015c3e5 100644 --- a/arch/ia64/kernel/irq_ia64.c +++ b/arch/ia64/kernel/irq_ia64.c @@ -30,6 +30,7 @@ #include <linux/bitops.h> #include <linux/irq.h> #include <linux/ratelimit.h> +#include <linux/acpi.h> #include <asm/delay.h> #include <asm/intrinsics.h> @@ -635,6 +636,7 @@ ia64_native_register_percpu_irq (ia64_vector vec, struct irqaction *action) desc->chip = &irq_type_ia64_lsapic; if (action) setup_irq(irq, action); + set_irq_handler(irq, handle_percpu_irq); } void __init @@ -650,6 +652,9 @@ ia64_native_register_ipi(void) void __init init_IRQ (void) { +#ifdef CONFIG_ACPI + acpi_boot_init(); +#endif ia64_register_ipi(); register_percpu_irq(IA64_SPURIOUS_INT_VECTOR, NULL); #ifdef CONFIG_SMP diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index a0220dc5ff4..1753f6a30d5 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -2055,25 +2055,6 @@ ia64_mca_init(void) IA64_MCA_DEBUG("%s: registered OS INIT handler with SAL\n", __func__); - /* - * Configure the CMCI/P vector and handler. Interrupts for CMC are - * per-processor, so AP CMC interrupts are setup in smp_callin() (smpboot.c). - */ - register_percpu_irq(IA64_CMC_VECTOR, &cmci_irqaction); - register_percpu_irq(IA64_CMCP_VECTOR, &cmcp_irqaction); - ia64_mca_cmc_vector_setup(); /* Setup vector on BSP */ - - /* Setup the MCA rendezvous interrupt vector */ - register_percpu_irq(IA64_MCA_RENDEZ_VECTOR, &mca_rdzv_irqaction); - - /* Setup the MCA wakeup interrupt vector */ - register_percpu_irq(IA64_MCA_WAKEUP_VECTOR, &mca_wkup_irqaction); - -#ifdef CONFIG_ACPI - /* Setup the CPEI/P handler */ - register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction); -#endif - /* Initialize the areas set aside by the OS to buffer the * platform/processor error states for MCA/INIT/CMC * handling. @@ -2103,6 +2084,25 @@ ia64_mca_late_init(void) if (!mca_init) return 0; + /* + * Configure the CMCI/P vector and handler. Interrupts for CMC are + * per-processor, so AP CMC interrupts are setup in smp_callin() (smpboot.c). + */ + register_percpu_irq(IA64_CMC_VECTOR, &cmci_irqaction); + register_percpu_irq(IA64_CMCP_VECTOR, &cmcp_irqaction); + ia64_mca_cmc_vector_setup(); /* Setup vector on BSP */ + + /* Setup the MCA rendezvous interrupt vector */ + register_percpu_irq(IA64_MCA_RENDEZ_VECTOR, &mca_rdzv_irqaction); + + /* Setup the MCA wakeup interrupt vector */ + register_percpu_irq(IA64_MCA_WAKEUP_VECTOR, &mca_wkup_irqaction); + +#ifdef CONFIG_ACPI + /* Setup the CPEI/P handler */ + register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction); +#endif + register_hotcpu_notifier(&mca_cpu_notifier); /* Setup the CMCI/P vector and handler */ diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c index 8fb958abf8d..911cf974970 100644 --- a/arch/ia64/kernel/setup.c +++ b/arch/ia64/kernel/setup.c @@ -594,10 +594,6 @@ setup_arch (char **cmdline_p) cpu_init(); /* initialize the bootstrap CPU */ mmu_context_init(); /* initialize context_id bitmap */ -#ifdef CONFIG_ACPI - acpi_boot_init(); -#endif - paravirt_banner(); paravirt_arch_setup_console(cmdline_p); diff --git a/arch/ia64/kernel/stacktrace.c b/arch/ia64/kernel/stacktrace.c new file mode 100644 index 00000000000..5af2783a87f --- /dev/null +++ b/arch/ia64/kernel/stacktrace.c @@ -0,0 +1,39 @@ +/* + * arch/ia64/kernel/stacktrace.c + * + * Stack trace management functions + * + */ +#include <linux/sched.h> +#include <linux/stacktrace.h> +#include <linux/module.h> + +static void +ia64_do_save_stack(struct unw_frame_info *info, void *arg) +{ + struct stack_trace *trace = arg; + unsigned long ip; + int skip = trace->skip; + + trace->nr_entries = 0; + do { + unw_get_ip(info, &ip); + if (ip == 0) + break; + if (skip == 0) { + trace->entries[trace->nr_entries++] = ip; + if (trace->nr_entries == trace->max_entries) + break; + } else + skip--; + } while (unw_unwind(info) >= 0); +} + +/* + * Save stack-backtrace addresses into a stack_trace buffer. + */ +void save_stack_trace(struct stack_trace *trace) +{ + unw_init_running(ia64_do_save_stack, trace); +} +EXPORT_SYMBOL(save_stack_trace); diff --git a/arch/ia64/kernel/unwind.c b/arch/ia64/kernel/unwind.c index b6c0e63a0bf..fed6afa2e8a 100644 --- a/arch/ia64/kernel/unwind.c +++ b/arch/ia64/kernel/unwind.c @@ -1204,10 +1204,10 @@ desc_spill_sprel_p (unsigned char qp, unw_word t, unsigned char abreg, unw_word static inline unw_hash_index_t hash (unsigned long ip) { -# define hashmagic 0x9e3779b97f4a7c16UL /* based on (sqrt(5)/2-1)*2^64 */ + /* magic number = ((sqrt(5)-1)/2)*2^64 */ + static const unsigned long hashmagic = 0x9e3779b97f4a7c16UL; - return (ip >> 4)*hashmagic >> (64 - UNW_LOG_HASH_SIZE); -#undef hashmagic + return (ip >> 4) * hashmagic >> (64 - UNW_LOG_HASH_SIZE); } static inline long @@ -1531,7 +1531,7 @@ build_script (struct unw_frame_info *info) struct unw_labeled_state *ls, *next; unsigned long ip = info->ip; struct unw_state_record sr; - struct unw_table *table; + struct unw_table *table, *prev; struct unw_reg_info *r; struct unw_insn insn; u8 *dp, *desc_end; @@ -1560,11 +1560,26 @@ build_script (struct unw_frame_info *info) STAT(parse_start = ia64_get_itc()); + prev = NULL; for (table = unw.tables; table; table = table->next) { if (ip >= table->start && ip < table->end) { + /* + * Leave the kernel unwind table at the very front, + * lest moving it breaks some assumption elsewhere. + * Otherwise, move the matching table to the second + * position in the list so that traversals can benefit + * from commonality in backtrace paths. + */ + if (prev && prev != unw.tables) { + /* unw is safe - we're already spinlocked */ + prev->next = table->next; + table->next = unw.tables->next; + unw.tables->next = table; + } e = lookup(table, ip - table->segment_base); break; } + prev = table; } if (!e) { /* no info, return default unwinder (leaf proc, no mem stack, no saved regs) */ |