Merge branch 'master' of /home/airlied/kernel/linux-2.6 into drm-core-next

14 files changed, 365 insertions, 174 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 3b159c5991b7..5447dc7defa9 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -273,6 +273,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
 
         setup_thread_stack(tsk, orig);
         clear_user_return_notifier(tsk);
+        clear_tsk_need_resched(tsk);
         stackend = end_of_stack(tsk);
         *stackend = STACK_END_MAGIC;    /* for overflow detection */
 
diff --git a/kernel/kthread.c b/kernel/kthread.c
index 2dc3786349d1..ca61bbdd44b2 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -265,6 +265,17 @@ int kthreadd(void *unused)
         return 0;
 }
 
+void __init_kthread_worker(struct kthread_worker *worker,
+                                const char *name,
+                                struct lock_class_key *key)
+{
+        spin_lock_init(&worker->lock);
+        lockdep_set_class_and_name(&worker->lock, key, name);
+        INIT_LIST_HEAD(&worker->work_list);
+        worker->task = NULL;
+}
+EXPORT_SYMBOL_GPL(__init_kthread_worker);
+
 /**
  * kthread_worker_fn - kthread function to process kthread_worker
  * @worker_ptr: pointer to initialized kthread_worker
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index eac7e3364335..2870feee81dd 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -3824,6 +3824,8 @@ static void perf_event_task_event(struct perf_task_event *task_event)
         rcu_read_lock();
         list_for_each_entry_rcu(pmu, &pmus, entry) {
                 cpuctx = get_cpu_ptr(pmu->pmu_cpu_context);
+                if (cpuctx->active_pmu != pmu)
+                        goto next;
                 perf_event_task_ctx(&cpuctx->ctx, task_event);
 
                 ctx = task_event->task_ctx;
@@ -3959,6 +3961,8 @@ static void perf_event_comm_event(struct perf_comm_event *comm_event)
         rcu_read_lock();
         list_for_each_entry_rcu(pmu, &pmus, entry) {
                 cpuctx = get_cpu_ptr(pmu->pmu_cpu_context);
+                if (cpuctx->active_pmu != pmu)
+                        goto next;
                 perf_event_comm_ctx(&cpuctx->ctx, comm_event);
 
                 ctxn = pmu->task_ctx_nr;
@@ -4144,6 +4148,8 @@ got_name:
         rcu_read_lock();
         list_for_each_entry_rcu(pmu, &pmus, entry) {
                 cpuctx = get_cpu_ptr(pmu->pmu_cpu_context);
+                if (cpuctx->active_pmu != pmu)
+                        goto next;
                 perf_event_mmap_ctx(&cpuctx->ctx, mmap_event,
                                         vma->vm_flags & VM_EXEC);
 
@@ -4713,7 +4719,7 @@ static int perf_swevent_init(struct perf_event *event)
                 break;
         }
 
-        if (event_id > PERF_COUNT_SW_MAX)
+        if (event_id >= PERF_COUNT_SW_MAX)
                 return -ENOENT;
 
         if (!event->parent) {
@@ -5145,20 +5151,36 @@ static void *find_pmu_context(int ctxn)
         return NULL;
 }
 
-static void free_pmu_context(void * __percpu cpu_context)
+static void update_pmu_context(struct pmu *pmu, struct pmu *old_pmu)
 {
-        struct pmu *pmu;
+        int cpu;
+
+        for_each_possible_cpu(cpu) {
+                struct perf_cpu_context *cpuctx;
+
+                cpuctx = per_cpu_ptr(pmu->pmu_cpu_context, cpu);
+
+                if (cpuctx->active_pmu == old_pmu)
+                        cpuctx->active_pmu = pmu;
+        }
+}
+
+static void free_pmu_context(struct pmu *pmu)
+{
+        struct pmu *i;
 
         mutex_lock(&pmus_lock);
         /*
          * Like a real lame refcount.
          */
-        list_for_each_entry(pmu, &pmus, entry) {
-                if (pmu->pmu_cpu_context == cpu_context)
+        list_for_each_entry(i, &pmus, entry) {
+                if (i->pmu_cpu_context == pmu->pmu_cpu_context) {
+                        update_pmu_context(i, pmu);
                         goto out;
+                }
         }
 
-        free_percpu(cpu_context);
+        free_percpu(pmu->pmu_cpu_context);
 out:
         mutex_unlock(&pmus_lock);
 }
@@ -5190,6 +5212,7 @@ int perf_pmu_register(struct pmu *pmu)
                 cpuctx->ctx.pmu = pmu;
                 cpuctx->jiffies_interval = 1;
                 INIT_LIST_HEAD(&cpuctx->rotation_list);
+                cpuctx->active_pmu = pmu;
         }
 
 got_cpu_context:
@@ -5241,7 +5264,7 @@ void perf_pmu_unregister(struct pmu *pmu)
         synchronize_rcu();
 
         free_percpu(pmu->pmu_disable_count);
-        free_pmu_context(pmu->pmu_cpu_context);
+        free_pmu_context(pmu);
 }
 
 struct pmu *perf_init_event(struct perf_event *event)
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index baf667bb2794..8c7e4832b9be 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -30,7 +30,7 @@
 
 #include "power.h"
 
-#define HIBERNATE_SIG   "LINHIB0001"
+#define HIBERNATE_SIG   "S1SUSPEND"
 
 /*
  *      The swap map is a data structure used for keeping track of each page
diff --git a/kernel/power/user.c b/kernel/power/user.c
index 1b2ea31e6bd8..c36c3b9e8a84 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -137,7 +137,7 @@ static int snapshot_release(struct inode *inode, struct file *filp)
         free_all_swap_pages(data->swap);
         if (data->frozen)
                 thaw_processes();
-        pm_notifier_call_chain(data->mode == O_WRONLY ?
+        pm_notifier_call_chain(data->mode == O_RDONLY ?
                         PM_POST_HIBERNATION : PM_POST_RESTORE);
         atomic_inc(&snapshot_device_available);