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-rw-r--r--arch/ia64/kernel/Makefile1
-rw-r--r--arch/ia64/kernel/acpi.c6
-rw-r--r--arch/ia64/kernel/cyclone.c2
-rw-r--r--arch/ia64/kernel/fsys.S30
-rw-r--r--arch/ia64/kernel/iosapic.c60
-rw-r--r--arch/ia64/kernel/irq_ia64.c7
-rw-r--r--arch/ia64/kernel/mca.c38
-rw-r--r--arch/ia64/kernel/msi_ia64.c8
-rw-r--r--arch/ia64/kernel/palinfo.c2
-rw-r--r--arch/ia64/kernel/perfmon.c30
-rw-r--r--arch/ia64/kernel/ptrace.c3
-rw-r--r--arch/ia64/kernel/salinfo.c4
-rw-r--r--arch/ia64/kernel/setup.c4
-rw-r--r--arch/ia64/kernel/smp.c13
-rw-r--r--arch/ia64/kernel/stacktrace.c39
-rw-r--r--arch/ia64/kernel/time.c2
-rw-r--r--arch/ia64/kernel/unwind.c23
17 files changed, 156 insertions, 116 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/acpi.c b/arch/ia64/kernel/acpi.c
index c6c90f39f4d..7b897b7b0ae 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -477,6 +477,12 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
return;
+ if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
+ printk_once(KERN_WARNING
+ "node_cpuid[%d] is too small, may not be able to use all cpus\n",
+ ARRAY_SIZE(node_cpuid));
+ return;
+ }
pxm = get_processor_proximity_domain(pa);
/* record this node in proximity bitmap */
diff --git a/arch/ia64/kernel/cyclone.c b/arch/ia64/kernel/cyclone.c
index 71e35864d2e..d52f1f78eff 100644
--- a/arch/ia64/kernel/cyclone.c
+++ b/arch/ia64/kernel/cyclone.c
@@ -59,13 +59,13 @@ int __init init_cyclone_clock(void)
return -ENODEV;
}
base = readq(reg);
+ iounmap(reg);
if(!base){
printk(KERN_ERR "Summit chipset: Could not find valid CBAR"
" value.\n");
use_cyclone = 0;
return -ENODEV;
}
- iounmap(reg);
/* setup PMCC */
offset = (base + CYCLONE_PMCC_OFFSET);
diff --git a/arch/ia64/kernel/fsys.S b/arch/ia64/kernel/fsys.S
index 3567d54f8ce..331d42bda77 100644
--- a/arch/ia64/kernel/fsys.S
+++ b/arch/ia64/kernel/fsys.S
@@ -420,22 +420,31 @@ EX(.fail_efault, ld8 r14=[r33]) // r14 <- *set
;;
RSM_PSR_I(p0, r18, r19) // mask interrupt delivery
- mov ar.ccv=0
andcm r14=r14,r17 // filter out SIGKILL & SIGSTOP
+ mov r8=EINVAL // default to EINVAL
#ifdef CONFIG_SMP
- mov r17=1
+ // __ticket_spin_trylock(r31)
+ ld4 r17=[r31]
;;
- cmpxchg4.acq r18=[r31],r17,ar.ccv // try to acquire the lock
- mov r8=EINVAL // default to EINVAL
+ mov.m ar.ccv=r17
+ extr.u r9=r17,17,15
+ adds r19=1,r17
+ extr.u r18=r17,0,15
+ ;;
+ cmp.eq p6,p7=r9,r18
;;
+(p6) cmpxchg4.acq r9=[r31],r19,ar.ccv
+(p6) dep.z r20=r19,1,15 // next serving ticket for unlock
+(p7) br.cond.spnt.many .lock_contention
+ ;;
+ cmp4.eq p0,p7=r9,r17
+ adds r31=2,r31
+(p7) br.cond.spnt.many .lock_contention
ld8 r3=[r2] // re-read current->blocked now that we hold the lock
- cmp4.ne p6,p0=r18,r0
-(p6) br.cond.spnt.many .lock_contention
;;
#else
ld8 r3=[r2] // re-read current->blocked now that we hold the lock
- mov r8=EINVAL // default to EINVAL
#endif
add r18=IA64_TASK_PENDING_OFFSET+IA64_SIGPENDING_SIGNAL_OFFSET,r16
add r19=IA64_TASK_SIGNAL_OFFSET,r16
@@ -490,7 +499,9 @@ EX(.fail_efault, ld8 r14=[r33]) // r14 <- *set
(p6) br.cond.spnt.few 1b // yes -> retry
#ifdef CONFIG_SMP
- st4.rel [r31]=r0 // release the lock
+ // __ticket_spin_unlock(r31)
+ st2.rel [r31]=r20
+ mov r20=0 // i must not leak kernel bits...
#endif
SSM_PSR_I(p0, p9, r31)
;;
@@ -512,7 +523,8 @@ EX(.fail_efault, (p15) st8 [r34]=r3)
.sig_pending:
#ifdef CONFIG_SMP
- st4.rel [r31]=r0 // release the lock
+ // __ticket_spin_unlock(r31)
+ st2.rel [r31]=r20 // release the lock
#endif
SSM_PSR_I(p0, p9, r17)
;;
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..38c07b86690 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>
@@ -632,9 +633,10 @@ ia64_native_register_percpu_irq (ia64_vector vec, struct irqaction *action)
BUG_ON(bind_irq_vector(irq, vec, CPU_MASK_ALL));
desc = irq_desc + irq;
desc->status |= IRQ_PER_CPU;
- desc->chip = &irq_type_ia64_lsapic;
+ set_irq_chip(irq, &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/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c
index 4a746ea838f..00b19a416ea 100644
--- a/arch/ia64/kernel/msi_ia64.c
+++ b/arch/ia64/kernel/msi_ia64.c
@@ -104,8 +104,8 @@ static int ia64_msi_retrigger_irq(unsigned int irq)
*/
static struct irq_chip ia64_msi_chip = {
.name = "PCI-MSI",
- .mask = mask_msi_irq,
- .unmask = unmask_msi_irq,
+ .irq_mask = mask_msi_irq,
+ .irq_unmask = unmask_msi_irq,
.ack = ia64_ack_msi_irq,
#ifdef CONFIG_SMP
.set_affinity = ia64_set_msi_irq_affinity,
@@ -160,8 +160,8 @@ static int dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
static struct irq_chip dmar_msi_type = {
.name = "DMAR_MSI",
- .unmask = dmar_msi_unmask,
- .mask = dmar_msi_mask,
+ .irq_unmask = dmar_msi_unmask,
+ .irq_mask = dmar_msi_mask,
.ack = ia64_ack_msi_irq,
#ifdef CONFIG_SMP
.set_affinity = dmar_msi_set_affinity,
diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
index fdf6f9d013e..77597e5ea60 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -434,7 +434,7 @@ register_info(char *page)
unsigned long phys_stacked;
pal_hints_u_t hints;
unsigned long iregs, dregs;
- char *info_type[]={
+ static const char * const info_type[] = {
"Implemented AR(s)",
"AR(s) with read side-effects",
"Implemented CR(s)",
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index cce050e85c7..d92d5b5161f 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -618,16 +618,15 @@ pfm_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,
}
-static int
-pfmfs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data,
- struct vfsmount *mnt)
+static struct dentry *
+pfmfs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data)
{
- return get_sb_pseudo(fs_type, "pfm:", NULL, PFMFS_MAGIC, mnt);
+ return mount_pseudo(fs_type, "pfm:", NULL, PFMFS_MAGIC);
}
static struct file_system_type pfm_fs_type = {
.name = "pfmfs",
- .get_sb = pfmfs_get_sb,
+ .mount = pfmfs_mount,
.kill_sb = kill_anon_super,
};
@@ -830,10 +829,9 @@ pfm_rvmalloc(unsigned long size)
unsigned long addr;
size = PAGE_ALIGN(size);
- mem = vmalloc(size);
+ mem = vzalloc(size);
if (mem) {
//printk("perfmon: CPU%d pfm_rvmalloc(%ld)=%p\n", smp_processor_id(), size, mem);
- memset(mem, 0, size);
addr = (unsigned long)mem;
while (size > 0) {
pfm_reserve_page(addr);
@@ -1543,7 +1541,7 @@ pfm_exit_smpl_buffer(pfm_buffer_fmt_t *fmt)
* any operations on the root directory. However, we need a non-trivial
* d_name - pfm: will go nicely and kill the special-casing in procfs.
*/
-static struct vfsmount *pfmfs_mnt;
+static struct vfsmount *pfmfs_mnt __read_mostly;
static int __init
init_pfm_fs(void)
@@ -1573,7 +1571,7 @@ pfm_read(struct file *filp, char __user *buf, size_t size, loff_t *ppos)
return -EINVAL;
}
- ctx = (pfm_context_t *)filp->private_data;
+ ctx = filp->private_data;
if (ctx == NULL) {
printk(KERN_ERR "perfmon: pfm_read: NULL ctx [%d]\n", task_pid_nr(current));
return -EINVAL;
@@ -1673,7 +1671,7 @@ pfm_poll(struct file *filp, poll_table * wait)
return 0;
}
- ctx = (pfm_context_t *)filp->private_data;
+ ctx = filp->private_data;
if (ctx == NULL) {
printk(KERN_ERR "perfmon: pfm_poll: NULL ctx [%d]\n", task_pid_nr(current));
return 0;
@@ -1733,7 +1731,7 @@ pfm_fasync(int fd, struct file *filp, int on)
return -EBADF;
}
- ctx = (pfm_context_t *)filp->private_data;
+ ctx = filp->private_data;
if (ctx == NULL) {
printk(KERN_ERR "perfmon: pfm_fasync NULL ctx [%d]\n", task_pid_nr(current));
return -EBADF;
@@ -1841,7 +1839,7 @@ pfm_flush(struct file *filp, fl_owner_t id)
return -EBADF;
}
- ctx = (pfm_context_t *)filp->private_data;
+ ctx = filp->private_data;
if (ctx == NULL) {
printk(KERN_ERR "perfmon: pfm_flush: NULL ctx [%d]\n", task_pid_nr(current));
return -EBADF;
@@ -1984,7 +1982,7 @@ pfm_close(struct inode *inode, struct file *filp)
return -EBADF;
}
- ctx = (pfm_context_t *)filp->private_data;
+ ctx = filp->private_data;
if (ctx == NULL) {
printk(KERN_ERR "perfmon: pfm_close: NULL ctx [%d]\n", task_pid_nr(current));
return -EBADF;
@@ -2186,7 +2184,7 @@ static const struct file_operations pfm_file_ops = {
};
static int
-pfmfs_delete_dentry(struct dentry *dentry)
+pfmfs_delete_dentry(const struct dentry *dentry)
{
return 1;
}
@@ -2234,7 +2232,7 @@ pfm_alloc_file(pfm_context_t *ctx)
}
path.mnt = mntget(pfmfs_mnt);
- path.dentry->d_op = &pfmfs_dentry_operations;
+ d_set_d_op(path.dentry, &pfmfs_dentry_operations);
d_add(path.dentry, inode);
file = alloc_file(&path, FMODE_READ, &pfm_file_ops);
@@ -4907,7 +4905,7 @@ restart_args:
goto error_args;
}
- ctx = (pfm_context_t *)file->private_data;
+ ctx = file->private_data;
if (unlikely(ctx == NULL)) {
DPRINT(("no context for fd %d\n", fd));
goto error_args;
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 7c7909f9bc9..8848f43d819 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1177,7 +1177,8 @@ ptrace_disable (struct task_struct *child)
}
long
-arch_ptrace (struct task_struct *child, long request, long addr, long data)
+arch_ptrace (struct task_struct *child, long request,
+ unsigned long addr, unsigned long data)
{
switch (request) {
case PTRACE_PEEKTEXT:
diff --git a/arch/ia64/kernel/salinfo.c b/arch/ia64/kernel/salinfo.c
index aa8b5fa1a8d..79802e540e5 100644
--- a/arch/ia64/kernel/salinfo.c
+++ b/arch/ia64/kernel/salinfo.c
@@ -354,6 +354,7 @@ retry:
static const struct file_operations salinfo_event_fops = {
.open = salinfo_event_open,
.read = salinfo_event_read,
+ .llseek = noop_llseek,
};
static int
@@ -571,6 +572,7 @@ static const struct file_operations salinfo_data_fops = {
.release = salinfo_log_release,
.read = salinfo_log_read,
.write = salinfo_log_write,
+ .llseek = default_llseek,
};
static int __cpuinit
@@ -642,7 +644,7 @@ salinfo_init(void)
for (i = 0; i < ARRAY_SIZE(salinfo_log_name); i++) {
data = salinfo_data + i;
data->type = i;
- init_MUTEX(&data->mutex);
+ sema_init(&data->mutex, 1);
dir = proc_mkdir(salinfo_log_name[i], salinfo_dir);
if (!dir)
continue;
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/smp.c b/arch/ia64/kernel/smp.c
index dabeefe2113..be450a3e987 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -293,6 +293,7 @@ smp_flush_tlb_all (void)
void
smp_flush_tlb_mm (struct mm_struct *mm)
{
+ cpumask_var_t cpus;
preempt_disable();
/* this happens for the common case of a single-threaded fork(): */
if (likely(mm == current->active_mm && atomic_read(&mm->mm_users) == 1))
@@ -301,9 +302,15 @@ smp_flush_tlb_mm (struct mm_struct *mm)
preempt_enable();
return;
}
-
- smp_call_function_many(mm_cpumask(mm),
- (void (*)(void *))local_finish_flush_tlb_mm, mm, 1);
+ if (!alloc_cpumask_var(&cpus, GFP_ATOMIC)) {
+ smp_call_function((void (*)(void *))local_finish_flush_tlb_mm,
+ mm, 1);
+ } else {
+ cpumask_copy(cpus, mm_cpumask(mm));
+ smp_call_function_many(cpus,
+ (void (*)(void *))local_finish_flush_tlb_mm, mm, 1);
+ free_cpumask_var(cpus);
+ }
local_irq_disable();
local_finish_flush_tlb_mm(mm);
local_irq_enable();
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/time.c b/arch/ia64/kernel/time.c
index ed6f22eb5b1..9702fa92489 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -168,7 +168,7 @@ timer_interrupt (int irq, void *dev_id)
{
unsigned long new_itm;
- if (unlikely(cpu_is_offline(smp_processor_id()))) {
+ if (cpu_is_offline(smp_processor_id())) {
return IRQ_HANDLED;
}
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) */
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-16 12:24:14 +0000