Merge branch 'linus' into tracing/core

Merge reason: merge latest tracing fixes to avoid conflicts in
              kernel/trace/trace_events_filter.c with upcoming change

Signed-off-by: Ingo Molnar <mingo@elte.hu>

9 files changed, 54 insertions, 15 deletions

diff --git a/kernel/module.c b/kernel/module.c
index 05f014efa32..e797812a4d9 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2388,6 +2388,9 @@ SYSCALL_DEFINE3(init_module, void __user *, umod,
         blocking_notifier_call_chain(&module_notify_list,
                                      MODULE_STATE_LIVE, mod);
 
+        /* We need to finish all async code before the module init sequence is done */
+        async_synchronize_full();
+
         mutex_lock(&module_mutex);
         /* Drop initial reference. */
         module_put(mod);
diff --git a/kernel/mutex.c b/kernel/mutex.c
index 5d79781394a..507cf2b5e9f 100644
--- a/kernel/mutex.c
+++ b/kernel/mutex.c
@@ -148,7 +148,8 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass,
 
         preempt_disable();
         mutex_acquire(&lock->dep_map, subclass, 0, ip);
-#if defined(CONFIG_SMP) && !defined(CONFIG_DEBUG_MUTEXES)
+#if defined(CONFIG_SMP) && !defined(CONFIG_DEBUG_MUTEXES) && \
+    !defined(CONFIG_HAVE_DEFAULT_NO_SPIN_MUTEXES)
         /*
          * Optimistic spinning.
          *
diff --git a/kernel/panic.c b/kernel/panic.c
index 3fd8c5bf8b3..934fb377f4b 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -213,8 +213,16 @@ unsigned long get_taint(void)
 
 void add_taint(unsigned flag)
 {
-        /* can't trust the integrity of the kernel anymore: */
-        debug_locks = 0;
+        /*
+         * Can't trust the integrity of the kernel anymore.
+         * We don't call directly debug_locks_off() because the issue
+         * is not necessarily serious enough to set oops_in_progress to 1
+         * Also we want to keep up lockdep for staging development and
+         * post-warning case.
+         */
+        if (flag != TAINT_CRAP && flag != TAINT_WARN && __debug_locks_off())
+                printk(KERN_WARNING "Disabling lockdep due to kernel taint\n");
+
         set_bit(flag, &tainted_mask);
 }
 EXPORT_SYMBOL(add_taint);
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index 5f21ab2bbcd..0854770b63b 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -22,6 +22,7 @@
 #include <linux/console.h>
 #include <linux/cpu.h>
 #include <linux/freezer.h>
+#include <scsi/scsi_scan.h>
 #include <asm/suspend.h>
 
 #include "power.h"
@@ -645,6 +646,13 @@ static int software_resume(void)
                 return 0;
 
         /*
+         * We can't depend on SCSI devices being available after loading one of
+         * their modules if scsi_complete_async_scans() is not called and the
+         * resume device usually is a SCSI one.
+         */
+        scsi_complete_async_scans();
+
+        /*
          * name_to_dev_t() below takes a sysfs buffer mutex when sysfs
          * is configured into the kernel. Since the regular hibernate
          * trigger path is via sysfs which takes a buffer mutex before
diff --git a/kernel/power/user.c b/kernel/power/user.c
index 6c85359364f..ed97375daae 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -24,6 +24,7 @@
 #include <linux/cpu.h>
 #include <linux/freezer.h>
 #include <linux/smp_lock.h>
+#include <scsi/scsi_scan.h>
 
 #include <asm/uaccess.h>
 
@@ -92,6 +93,7 @@ static int snapshot_open(struct inode *inode, struct file *filp)
         filp->private_data = data;
         memset(&data->handle, 0, sizeof(struct snapshot_handle));
         if ((filp->f_flags & O_ACCMODE) == O_RDONLY) {
+                /* Hibernating.  The image device should be accessible. */
                 data->swap = swsusp_resume_device ?
                         swap_type_of(swsusp_resume_device, 0, NULL) : -1;
                 data->mode = O_RDONLY;
@@ -99,6 +101,13 @@ static int snapshot_open(struct inode *inode, struct file *filp)
                 if (error)
                         pm_notifier_call_chain(PM_POST_HIBERNATION);
         } else {
+                /*
+                 * Resuming.  We may need to wait for the image device to
+                 * appear.
+                 */
+                wait_for_device_probe();
+                scsi_complete_async_scans();
+
                 data->swap = -1;
                 data->mode = O_WRONLY;
                 error = pm_notifier_call_chain(PM_RESTORE_PREPARE);
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 644606e899f..57981d338d1 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -317,7 +317,7 @@ config KMEMTRACE
           and profile kernel code.
 
           This requires an userspace application to use. See
-          Documentation/vm/kmemtrace.txt for more information.
+          Documentation/trace/kmemtrace.txt for more information.
 
           Saying Y will make the kernel somewhat larger and slower. However,
           if you disable kmemtrace at run-time or boot-time, the performance
@@ -422,7 +422,7 @@ config MMIOTRACE
           implementation and works via page faults. Tracing is disabled by
           default and can be enabled at run-time.
 
-          See Documentation/tracers/mmiotrace.txt.
+          See Documentation/trace/mmiotrace.txt.
           If you are not helping to develop drivers, say N.
 
 config MMIOTRACE_TEST
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index be9299a53e2..789e14eb09a 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -503,6 +503,7 @@ event_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
 
         if (copy_from_user(&buf, ubuf, cnt))
                 return -EFAULT;
+        buf[cnt] = '\0';
 
         pred = kzalloc(sizeof(*pred), GFP_KERNEL);
         if (!pred)
@@ -520,9 +521,10 @@ event_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
                 return cnt;
         }
 
-        if (filter_add_pred(call, pred)) {
+        err = filter_add_pred(call, pred);
+        if (err < 0) {
                 filter_free_pred(pred);
-                return -EINVAL;
+                return err;
         }
 
         *ppos += cnt;
@@ -569,6 +571,7 @@ subsystem_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
 
         if (copy_from_user(&buf, ubuf, cnt))
                 return -EFAULT;
+        buf[cnt] = '\0';
 
         pred = kzalloc(sizeof(*pred), GFP_KERNEL);
         if (!pred)
@@ -586,10 +589,11 @@ subsystem_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
                 return cnt;
         }
 
-        if (filter_add_subsystem_pred(system, pred)) {
+        err = filter_add_subsystem_pred(system, pred);
+        if (err < 0) {
                 filter_free_subsystem_preds(system);
                 filter_free_pred(pred);
-                return -EINVAL;
+                return err;
         }
 
         *ppos += cnt;
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 470ad9487ec..9f8ecca34a5 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -215,7 +215,7 @@ static int __filter_add_pred(struct ftrace_event_call *call,
                 }
         }
 
-        return -ENOMEM;
+        return -ENOSPC;
 }
 
 static int is_string_field(const char *type)
@@ -319,7 +319,7 @@ int filter_add_subsystem_pred(struct event_subsystem *system,
         }
 
         if (i == MAX_FILTER_PRED)
-                return -EINVAL;
+                return -ENOSPC;
 
         events_for_each(call) {
                 int err;
@@ -410,16 +410,22 @@ int filter_parse(char **pbuf, struct filter_pred *pred)
                 }
         }
 
+        if (!val_str) {
+                pred->field_name = NULL;
+                return -EINVAL;
+        }
+
         pred->field_name = kstrdup(pred->field_name, GFP_KERNEL);
         if (!pred->field_name)
                 return -ENOMEM;
 
-        pred->val = simple_strtoull(val_str, &tmp, 10);
+        pred->val = simple_strtoull(val_str, &tmp, 0);
         if (tmp == val_str) {
                 pred->str_val = kstrdup(val_str, GFP_KERNEL);
                 if (!pred->str_val)
                         return -ENOMEM;
-        }
+        } else if (*tmp != '\0')
+                return -EINVAL;
 
         return 0;
 }
diff --git a/kernel/trace/trace_events_stage_2.h b/kernel/trace/trace_events_stage_2.h
index 1c94b87c718..02fb710193e 100644
--- a/kernel/trace/trace_events_stage_2.h
+++ b/kernel/trace/trace_events_stage_2.h
@@ -105,10 +105,10 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags)	\
                 return 0;
 
 #undef __entry
-#define __entry "REC"
+#define __entry REC
 
 #undef TP_printk
-#define TP_printk(fmt, args...) "%s, %s\n", #fmt, #args
+#define TP_printk(fmt, args...) "%s, %s\n", #fmt, __stringify(args)
 
 #undef TP_fast_assign
 #define TP_fast_assign(args...) args