16 files changed, 26 insertions, 92 deletions

diff --git a/arch/i386/kernel/acpi/cstate.c b/arch/i386/kernel/acpi/cstate.c
index 4664b55f623e..12e937c1ce4b 100644
--- a/arch/i386/kernel/acpi/cstate.c
+++ b/arch/i386/kernel/acpi/cstate.c
@@ -156,10 +156,8 @@ static int __init ffh_cstate_init(void)
 
 static void __exit ffh_cstate_exit(void)
 {
-        if (cpu_cstate_entry) {
-                free_percpu(cpu_cstate_entry);
-                cpu_cstate_entry = NULL;
-        }
+        free_percpu(cpu_cstate_entry);
+        cpu_cstate_entry = NULL;
 }
 
 arch_initcall(ffh_cstate_init);
diff --git a/arch/i386/kernel/cpu/mcheck/non-fatal.c b/arch/i386/kernel/cpu/mcheck/non-fatal.c
index 1f9153ae5b03..6b5d3518a1c0 100644
--- a/arch/i386/kernel/cpu/mcheck/non-fatal.c
+++ b/arch/i386/kernel/cpu/mcheck/non-fatal.c
@@ -51,10 +51,10 @@ static void mce_checkregs (void *info)
         }
 }
 
-static void mce_work_fn(void *data);
-static DECLARE_WORK(mce_work, mce_work_fn, NULL);
+static void mce_work_fn(struct work_struct *work);
+static DECLARE_DELAYED_WORK(mce_work, mce_work_fn);
 
-static void mce_work_fn(void *data)
+static void mce_work_fn(struct work_struct *work)
 { 
         on_each_cpu(mce_checkregs, NULL, 1, 1);
         schedule_delayed_work(&mce_work, MCE_RATE);
diff --git a/arch/i386/kernel/cpu/mcheck/therm_throt.c b/arch/i386/kernel/cpu/mcheck/therm_throt.c
index bad8b4420709..065005c3f168 100644
--- a/arch/i386/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/i386/kernel/cpu/mcheck/therm_throt.c
@@ -116,7 +116,6 @@ static __cpuinit int thermal_throttle_add_dev(struct sys_device *sys_dev)
         return sysfs_create_group(&sys_dev->kobj, &thermal_throttle_attr_group);
 }
 
-#ifdef CONFIG_HOTPLUG_CPU
 static __cpuinit void thermal_throttle_remove_dev(struct sys_device *sys_dev)
 {
         return sysfs_remove_group(&sys_dev->kobj, &thermal_throttle_attr_group);
@@ -153,7 +152,6 @@ static struct notifier_block thermal_throttle_cpu_notifier =
 {
         .notifier_call = thermal_throttle_cpu_callback,
 };
-#endif /* CONFIG_HOTPLUG_CPU */
 
 static __init int thermal_throttle_init_device(void)
 {
diff --git a/arch/i386/kernel/cpuid.c b/arch/i386/kernel/cpuid.c
index 5c5d4507ee7d..db6dd20c3589 100644
--- a/arch/i386/kernel/cpuid.c
+++ b/arch/i386/kernel/cpuid.c
@@ -166,7 +166,6 @@ static int cpuid_device_create(int i)
         return err;
 }
 
-#ifdef CONFIG_HOTPLUG_CPU
 static int cpuid_class_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 {
         unsigned int cpu = (unsigned long)hcpu;
@@ -186,7 +185,6 @@ static struct notifier_block __cpuinitdata cpuid_class_cpu_notifier =
 {
         .notifier_call = cpuid_class_cpu_callback,
 };
-#endif /* !CONFIG_HOTPLUG_CPU */
 
 static int __init cpuid_init(void)
 {
diff --git a/arch/i386/kernel/crash.c b/arch/i386/kernel/crash.c
index 144b43288965..a5e0e990ea95 100644
--- a/arch/i386/kernel/crash.c
+++ b/arch/i386/kernel/crash.c
@@ -31,68 +31,6 @@
 /* This keeps a track of which one is crashing cpu. */
 static int crashing_cpu;
 
-static u32 *append_elf_note(u32 *buf, char *name, unsigned type, void *data,
-                                                               size_t data_len)
-{
-        struct elf_note note;
-
-        note.n_namesz = strlen(name) + 1;
-        note.n_descsz = data_len;
-        note.n_type   = type;
-        memcpy(buf, &note, sizeof(note));
-        buf += (sizeof(note) +3)/4;
-        memcpy(buf, name, note.n_namesz);
-        buf += (note.n_namesz + 3)/4;
-        memcpy(buf, data, note.n_descsz);
-        buf += (note.n_descsz + 3)/4;
-
-        return buf;
-}
-
-static void final_note(u32 *buf)
-{
-        struct elf_note note;
-
-        note.n_namesz = 0;
-        note.n_descsz = 0;
-        note.n_type   = 0;
-        memcpy(buf, &note, sizeof(note));
-}
-
-static void crash_save_this_cpu(struct pt_regs *regs, int cpu)
-{
-        struct elf_prstatus prstatus;
-        u32 *buf;
-
-        if ((cpu < 0) || (cpu >= NR_CPUS))
-                return;
-
-        /* Using ELF notes here is opportunistic.
-         * I need a well defined structure format
-         * for the data I pass, and I need tags
-         * on the data to indicate what information I have
-         * squirrelled away.  ELF notes happen to provide
-         * all of that, so there is no need to invent something new.
-         */
-        buf = (u32*)per_cpu_ptr(crash_notes, cpu);
-        if (!buf)
-                return;
-        memset(&prstatus, 0, sizeof(prstatus));
-        prstatus.pr_pid = current->pid;
-        elf_core_copy_regs(&prstatus.pr_reg, regs);
-        buf = append_elf_note(buf, "CORE", NT_PRSTATUS, &prstatus,
-                                sizeof(prstatus));
-        final_note(buf);
-}
-
-static void crash_save_self(struct pt_regs *regs)
-{
-        int cpu;
-
-        cpu = safe_smp_processor_id();
-        crash_save_this_cpu(regs, cpu);
-}
-
 #if defined(CONFIG_SMP) && defined(CONFIG_X86_LOCAL_APIC)
 static atomic_t waiting_for_crash_ipi;
 
@@ -121,7 +59,7 @@ static int crash_nmi_callback(struct notifier_block *self,
                 crash_fixup_ss_esp(&fixed_regs, regs);
                 regs = &fixed_regs;
         }
-        crash_save_this_cpu(regs, cpu);
+        crash_save_cpu(regs, cpu);
         disable_local_APIC();
         atomic_dec(&waiting_for_crash_ipi);
         /* Assume hlt works */
@@ -195,5 +133,5 @@ void machine_crash_shutdown(struct pt_regs *regs)
 #if defined(CONFIG_X86_IO_APIC)
         disable_IO_APIC();
 #endif
-        crash_save_self(regs);
+        crash_save_cpu(regs, safe_smp_processor_id());
 }
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 7f015a71ab55..e21dcde0790e 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -34,6 +34,7 @@
 #include <linux/pci.h>
 #include <linux/msi.h>
 #include <linux/htirq.h>
+#include <linux/freezer.h>
 
 #include <asm/io.h>
 #include <asm/smp.h>
diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c
index fc79e1e859c4..af1d53344993 100644
--- a/arch/i386/kernel/kprobes.c
+++ b/arch/i386/kernel/kprobes.c
@@ -184,7 +184,7 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
 void __kprobes arch_remove_kprobe(struct kprobe *p)
 {
         mutex_lock(&kprobe_mutex);
-        free_insn_slot(p->ainsn.insn);
+        free_insn_slot(p->ainsn.insn, (p->ainsn.boostable == 1));
         mutex_unlock(&kprobe_mutex);
 }
 
@@ -333,7 +333,7 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
                 return 1;
 
 ss_probe:
-#ifndef CONFIG_PREEMPT
+#if !defined(CONFIG_PREEMPT) || defined(CONFIG_PM)
         if (p->ainsn.boostable == 1 && !p->post_handler){
                 /* Boost up -- we can execute copied instructions directly */
                 reset_current_kprobe();
diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c
index 23f5984d0654..972346604f9d 100644
--- a/arch/i386/kernel/microcode.c
+++ b/arch/i386/kernel/microcode.c
@@ -703,7 +703,6 @@ static struct sysdev_driver mc_sysdev_driver = {
         .resume = mc_sysdev_resume,
 };
 
-#ifdef CONFIG_HOTPLUG_CPU
 static __cpuinit int
 mc_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
 {
@@ -726,7 +725,6 @@ mc_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
 static struct notifier_block mc_cpu_notifier = {
         .notifier_call = mc_cpu_callback,
 };
-#endif
 
 static int __init microcode_init (void)
 {
diff --git a/arch/i386/kernel/msr.c b/arch/i386/kernel/msr.c
index fd45059c9084..1d1a56cae340 100644
--- a/arch/i386/kernel/msr.c
+++ b/arch/i386/kernel/msr.c
@@ -249,7 +249,6 @@ static int msr_device_create(int i)
         return err;
 }
 
-#ifdef CONFIG_HOTPLUG_CPU
 static int msr_class_cpu_callback(struct notifier_block *nfb,
                                 unsigned long action, void *hcpu)
 {
@@ -270,7 +269,6 @@ static struct notifier_block __cpuinitdata msr_class_cpu_notifier =
 {
         .notifier_call = msr_class_cpu_callback,
 };
-#endif
 
 static int __init msr_init(void)
 {
diff --git a/arch/i386/kernel/reboot.c b/arch/i386/kernel/reboot.c
index 84278e0093a2..3514b4153f7f 100644
--- a/arch/i386/kernel/reboot.c
+++ b/arch/i386/kernel/reboot.c
@@ -12,6 +12,7 @@
 #include <linux/dmi.h>
 #include <linux/ctype.h>
 #include <linux/pm.h>
+#include <linux/reboot.h>
 #include <asm/uaccess.h>
 #include <asm/apic.h>
 #include <asm/desc.h>
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 695d53fd14de..79df6e612dbd 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -448,8 +448,7 @@ void __init setup_bootmem_allocator(void)
         if (LOADER_TYPE && INITRD_START) {
                 if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
                         reserve_bootmem(INITRD_START, INITRD_SIZE);
-                        initrd_start =
-                                INITRD_START ? INITRD_START + PAGE_OFFSET : 0;
+                        initrd_start = INITRD_START + PAGE_OFFSET;
                         initrd_end = initrd_start+INITRD_SIZE;
                 }
                 else {
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c
index 1b080ab8a49f..5285aff8367f 100644
--- a/arch/i386/kernel/smp.c
+++ b/arch/i386/kernel/smp.c
@@ -693,6 +693,10 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
                 put_cpu();
                 return -EBUSY;
         }
+
+        /* Can deadlock when called with interrupts disabled */
+        WARN_ON(irqs_disabled());
+
         spin_lock_bh(&call_lock);
         __smp_call_function_single(cpu, func, info, nonatomic, wait);
         spin_unlock_bh(&call_lock);
diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index b4e6f32de453..4bf0e3c83b8b 100644
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -1071,13 +1071,15 @@ void cpu_exit_clear(void)
 
 struct warm_boot_cpu_info {
         struct completion *complete;
+        struct work_struct task;
         int apicid;
         int cpu;
 };
 
-static void __cpuinit do_warm_boot_cpu(void *p)
+static void __cpuinit do_warm_boot_cpu(struct work_struct *work)
 {
-        struct warm_boot_cpu_info *info = p;
+        struct warm_boot_cpu_info *info =
+                container_of(work, struct warm_boot_cpu_info, task);
         do_boot_cpu(info->apicid, info->cpu);
         complete(info->complete);
 }
@@ -1086,7 +1088,6 @@ static int __cpuinit __smp_prepare_cpu(int cpu)
 {
         DECLARE_COMPLETION_ONSTACK(done);
         struct warm_boot_cpu_info info;
-        struct work_struct task;
         int     apicid, ret;
         struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
 
@@ -1111,7 +1112,7 @@ static int __cpuinit __smp_prepare_cpu(int cpu)
         info.complete = &done;
         info.apicid = apicid;
         info.cpu = cpu;
-        INIT_WORK(&task, do_warm_boot_cpu, &info);
+        INIT_WORK(&info.task, do_warm_boot_cpu);
 
         tsc_sync_disabled = 1;
 
@@ -1119,7 +1120,7 @@ static int __cpuinit __smp_prepare_cpu(int cpu)
         clone_pgd_range(swapper_pg_dir, swapper_pg_dir + USER_PGD_PTRS,
                         KERNEL_PGD_PTRS);
         flush_tlb_all();
-        schedule_work(&task);
+        schedule_work(&info.task);
         wait_for_completion(&done);
 
         tsc_sync_disabled = 0;
diff --git a/arch/i386/kernel/sysenter.c b/arch/i386/kernel/sysenter.c
index 92849c7def5a..7de9117b5a3a 100644
--- a/arch/i386/kernel/sysenter.c
+++ b/arch/i386/kernel/sysenter.c
@@ -136,7 +136,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack)
                 goto up_fail;
         }
 
-        vma = kmem_cache_zalloc(vm_area_cachep, SLAB_KERNEL);
+        vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
         if (!vma) {
                 ret = -ENOMEM;
                 goto up_fail;
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index c447807e2a45..68de48e498ca 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -464,7 +464,7 @@ void die(const char * str, struct pt_regs * regs, long err)
                 u32 lock_owner;
                 int lock_owner_depth;
         } die = {
-                .lock =                 SPIN_LOCK_UNLOCKED,
+                .lock =                 __SPIN_LOCK_UNLOCKED(die.lock),
                 .lock_owner =           -1,
                 .lock_owner_depth =     0
         };
diff --git a/arch/i386/kernel/tsc.c b/arch/i386/kernel/tsc.c
index 7f22e03253e2..1bbe45dca7a0 100644
--- a/arch/i386/kernel/tsc.c
+++ b/arch/i386/kernel/tsc.c
@@ -216,7 +216,7 @@ static unsigned int cpufreq_delayed_issched = 0;
 static unsigned int cpufreq_init = 0;
 static struct work_struct cpufreq_delayed_get_work;
 
-static void handle_cpufreq_delayed_get(void *v)
+static void handle_cpufreq_delayed_get(struct work_struct *work)
 {
         unsigned int cpu;
 
@@ -305,7 +305,7 @@ static int __init cpufreq_tsc(void)
 {
         int ret;
 
-        INIT_WORK(&cpufreq_delayed_get_work, handle_cpufreq_delayed_get, NULL);
+        INIT_WORK(&cpufreq_delayed_get_work, handle_cpufreq_delayed_get);
         ret = cpufreq_register_notifier(&time_cpufreq_notifier_block,
                                         CPUFREQ_TRANSITION_NOTIFIER);
         if (!ret)