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-rw-r--r--arch/x86_64/kernel/crash.c69
-rw-r--r--arch/x86_64/kernel/kprobes.c2
-rw-r--r--arch/x86_64/kernel/mce.c8
-rw-r--r--arch/x86_64/kernel/mce_amd.c4
-rw-r--r--arch/x86_64/kernel/setup.c3
-rw-r--r--arch/x86_64/kernel/smp.c4
-rw-r--r--arch/x86_64/kernel/smpboot.c12
-rw-r--r--arch/x86_64/kernel/time.c4
-rw-r--r--arch/x86_64/kernel/vsyscall.c3
9 files changed, 23 insertions, 86 deletions
diff --git a/arch/x86_64/kernel/crash.c b/arch/x86_64/kernel/crash.c
index 3525f884af82..95a7a2c13131 100644
--- a/arch/x86_64/kernel/crash.c
+++ b/arch/x86_64/kernel/crash.c
@@ -28,71 +28,6 @@
/* 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, 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 = smp_processor_id();
- crash_save_this_cpu(regs, cpu);
-}
-
#ifdef CONFIG_SMP
static atomic_t waiting_for_crash_ipi;
@@ -117,7 +52,7 @@ static int crash_nmi_callback(struct notifier_block *self,
return NOTIFY_STOP;
local_irq_disable();
- crash_save_this_cpu(regs, cpu);
+ crash_save_cpu(regs, cpu);
disable_local_APIC();
atomic_dec(&waiting_for_crash_ipi);
/* Assume hlt works */
@@ -196,5 +131,5 @@ void machine_crash_shutdown(struct pt_regs *regs)
disable_IO_APIC();
- crash_save_self(regs);
+ crash_save_cpu(regs, smp_processor_id());
}
diff --git a/arch/x86_64/kernel/kprobes.c b/arch/x86_64/kernel/kprobes.c
index ac241567e682..209c8c0bec71 100644
--- a/arch/x86_64/kernel/kprobes.c
+++ b/arch/x86_64/kernel/kprobes.c
@@ -224,7 +224,7 @@ 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, 0);
mutex_unlock(&kprobe_mutex);
}
diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c
index a7440cb9c14f..ac085038af29 100644
--- a/arch/x86_64/kernel/mce.c
+++ b/arch/x86_64/kernel/mce.c
@@ -306,8 +306,8 @@ void mce_log_therm_throt_event(unsigned int cpu, __u64 status)
*/
static int check_interval = 5 * 60; /* 5 minutes */
-static void mcheck_timer(void *data);
-static DECLARE_WORK(mcheck_work, mcheck_timer, NULL);
+static void mcheck_timer(struct work_struct *work);
+static DECLARE_DELAYED_WORK(mcheck_work, mcheck_timer);
static void mcheck_check_cpu(void *info)
{
@@ -315,7 +315,7 @@ static void mcheck_check_cpu(void *info)
do_machine_check(NULL, 0);
}
-static void mcheck_timer(void *data)
+static void mcheck_timer(struct work_struct *work)
{
on_each_cpu(mcheck_check_cpu, NULL, 1, 1);
schedule_delayed_work(&mcheck_work, check_interval * HZ);
@@ -641,7 +641,6 @@ static __cpuinit int mce_create_device(unsigned int cpu)
return err;
}
-#ifdef CONFIG_HOTPLUG_CPU
static void mce_remove_device(unsigned int cpu)
{
int i;
@@ -675,7 +674,6 @@ mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
static struct notifier_block mce_cpu_notifier = {
.notifier_call = mce_cpu_callback,
};
-#endif
static __init int mce_init_device(void)
{
diff --git a/arch/x86_64/kernel/mce_amd.c b/arch/x86_64/kernel/mce_amd.c
index 883fe747f64c..fa09debad4b7 100644
--- a/arch/x86_64/kernel/mce_amd.c
+++ b/arch/x86_64/kernel/mce_amd.c
@@ -551,7 +551,6 @@ out:
return err;
}
-#ifdef CONFIG_HOTPLUG_CPU
/*
* let's be hotplug friendly.
* in case of multiple core processors, the first core always takes ownership
@@ -594,12 +593,14 @@ static void threshold_remove_bank(unsigned int cpu, int bank)
sprintf(name, "threshold_bank%i", bank);
+#ifdef CONFIG_SMP
/* sibling symlink */
if (shared_bank[bank] && b->blocks->cpu != cpu) {
sysfs_remove_link(&per_cpu(device_mce, cpu).kobj, name);
per_cpu(threshold_banks, cpu)[bank] = NULL;
return;
}
+#endif
/* remove all sibling symlinks before unregistering */
for_each_cpu_mask(i, b->cpus) {
@@ -656,7 +657,6 @@ static int threshold_cpu_callback(struct notifier_block *nfb,
static struct notifier_block threshold_cpu_notifier = {
.notifier_call = threshold_cpu_callback,
};
-#endif /* CONFIG_HOTPLUG_CPU */
static __init int threshold_init_device(void)
{
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index 6595a4ebe7f1..af425a8049fb 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -471,8 +471,7 @@ void __init setup_arch(char **cmdline_p)
if (LOADER_TYPE && INITRD_START) {
if (INITRD_START + INITRD_SIZE <= (end_pfn << PAGE_SHIFT)) {
reserve_bootmem_generic(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/x86_64/kernel/smp.c b/arch/x86_64/kernel/smp.c
index 1bf0e094f439..af1ec4d23cf8 100644
--- a/arch/x86_64/kernel/smp.c
+++ b/arch/x86_64/kernel/smp.c
@@ -379,6 +379,10 @@ int smp_call_function_single (int cpu, void (*func) (void *info), void *info,
put_cpu();
return 0;
}
+
+ /* 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/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index 4c161c208d5b..daf19332f0dd 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -754,14 +754,16 @@ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int sta
}
struct create_idle {
+ struct work_struct work;
struct task_struct *idle;
struct completion done;
int cpu;
};
-void do_fork_idle(void *_c_idle)
+void do_fork_idle(struct work_struct *work)
{
- struct create_idle *c_idle = _c_idle;
+ struct create_idle *c_idle =
+ container_of(work, struct create_idle, work);
c_idle->idle = fork_idle(c_idle->cpu);
complete(&c_idle->done);
@@ -776,10 +778,10 @@ static int __cpuinit do_boot_cpu(int cpu, int apicid)
int timeout;
unsigned long start_rip;
struct create_idle c_idle = {
+ .work = __WORK_INITIALIZER(c_idle.work, do_fork_idle),
.cpu = cpu,
.done = COMPLETION_INITIALIZER_ONSTACK(c_idle.done),
};
- DECLARE_WORK(work, do_fork_idle, &c_idle);
/* allocate memory for gdts of secondary cpus. Hotplug is considered */
if (!cpu_gdt_descr[cpu].address &&
@@ -826,9 +828,9 @@ static int __cpuinit do_boot_cpu(int cpu, int apicid)
* thread.
*/
if (!keventd_up() || current_is_keventd())
- work.func(work.data);
+ c_idle.work.func(&c_idle.work);
else {
- schedule_work(&work);
+ schedule_work(&c_idle.work);
wait_for_completion(&c_idle.done);
}
diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c
index e3ef544d2cfb..9f05bc9b2dad 100644
--- a/arch/x86_64/kernel/time.c
+++ b/arch/x86_64/kernel/time.c
@@ -563,7 +563,7 @@ 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 *v)
{
unsigned int cpu;
for_each_online_cpu(cpu) {
@@ -639,7 +639,7 @@ static struct notifier_block time_cpufreq_notifier_block = {
static int __init cpufreq_tsc(void)
{
- INIT_WORK(&cpufreq_delayed_get_work, handle_cpufreq_delayed_get, NULL);
+ INIT_WORK(&cpufreq_delayed_get_work, handle_cpufreq_delayed_get);
if (!cpufreq_register_notifier(&time_cpufreq_notifier_block,
CPUFREQ_TRANSITION_NOTIFIER))
cpufreq_init = 1;
diff --git a/arch/x86_64/kernel/vsyscall.c b/arch/x86_64/kernel/vsyscall.c
index c3de9a09cd9f..4a673f5397a0 100644
--- a/arch/x86_64/kernel/vsyscall.c
+++ b/arch/x86_64/kernel/vsyscall.c
@@ -42,6 +42,7 @@
#include <asm/topology.h>
#define __vsyscall(nr) __attribute__ ((unused,__section__(".vsyscall_" #nr)))
+#define __syscall_clobber "r11","rcx","memory"
int __sysctl_vsyscall __section_sysctl_vsyscall = 1;
seqlock_t __xtime_lock __section_xtime_lock = SEQLOCK_UNLOCKED;
@@ -274,7 +275,6 @@ static void __cpuinit cpu_vsyscall_init(void *arg)
vsyscall_set_cpu(raw_smp_processor_id());
}
-#ifdef CONFIG_HOTPLUG_CPU
static int __cpuinit
cpu_vsyscall_notifier(struct notifier_block *n, unsigned long action, void *arg)
{
@@ -283,7 +283,6 @@ cpu_vsyscall_notifier(struct notifier_block *n, unsigned long action, void *arg)
smp_call_function_single(cpu, cpu_vsyscall_init, NULL, 0, 1);
return NOTIFY_DONE;
}
-#endif
static void __init map_vsyscall(void)
{
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