10 files changed, 54 insertions, 48 deletions

diff --git a/kernel/capability.c b/kernel/capability.c
index 7f876e60521f..9e4697e9b276 100644
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -135,7 +135,7 @@ static inline int cap_get_target_pid(pid_t pid, kernel_cap_t *pEp,
         if (pid && (pid != task_pid_vnr(current))) {
                 struct task_struct *target;
 
-                read_lock(&tasklist_lock);
+                rcu_read_lock();
 
                 target = find_task_by_vpid(pid);
                 if (!target)
@@ -143,7 +143,7 @@ static inline int cap_get_target_pid(pid_t pid, kernel_cap_t *pEp,
                 else
                         ret = security_capget(target, pEp, pIp, pPp);
 
-                read_unlock(&tasklist_lock);
+                rcu_read_unlock();
         } else
                 ret = security_capget(current, pEp, pIp, pPp);
 
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index 235716556bf1..d49afb2395e5 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -146,7 +146,7 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
                 struct task_struct *p;
 
                 ret = -ESRCH;
-                read_lock(&tasklist_lock);
+                rcu_read_lock();
                 p = find_task_by_vpid(pid);
                 if (!p)
                         goto err_unlock;
@@ -157,7 +157,7 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
                     !capable(CAP_SYS_PTRACE))
                         goto err_unlock;
                 head = p->compat_robust_list;
-                read_unlock(&tasklist_lock);
+                rcu_read_unlock();
         }
 
         if (put_user(sizeof(*head), len_ptr))
@@ -165,7 +165,7 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
         return put_user(ptr_to_compat(head), head_ptr);
 
 err_unlock:
-        read_unlock(&tasklist_lock);
+        rcu_read_unlock();
 
         return ret;
 }
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 495440779ce3..00d1fda58ab6 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -256,7 +256,7 @@ static int posix_get_monotonic_coarse(clockid_t which_clock,
         return 0;
 }
 
-int posix_get_coarse_res(const clockid_t which_clock, struct timespec *tp)
+static int posix_get_coarse_res(const clockid_t which_clock, struct timespec *tp)
 {
         *tp = ktime_to_timespec(KTIME_LOW_RES);
         return 0;
diff --git a/kernel/printk.c b/kernel/printk.c
index 1751c456b71f..40674122ecf2 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -35,6 +35,7 @@
 #include <linux/kexec.h>
 #include <linux/ratelimit.h>
 #include <linux/kmsg_dump.h>
+#include <linux/syslog.h>
 
 #include <asm/uaccess.h>
 
@@ -258,38 +259,23 @@ static inline void boot_delay_msec(void)
 }
 #endif
 
-/*
- * Commands to do_syslog:
- *
- *      0 -- Close the log.  Currently a NOP.
- *      1 -- Open the log. Currently a NOP.
- *      2 -- Read from the log.
- *      3 -- Read all messages remaining in the ring buffer.
- *      4 -- Read and clear all messages remaining in the ring buffer
- *      5 -- Clear ring buffer.
- *      6 -- Disable printk's to console
- *      7 -- Enable printk's to console
- *      8 -- Set level of messages printed to console
- *      9 -- Return number of unread characters in the log buffer
- *     10 -- Return size of the log buffer
- */
-int do_syslog(int type, char __user *buf, int len)
+int do_syslog(int type, char __user *buf, int len, bool from_file)
 {
         unsigned i, j, limit, count;
         int do_clear = 0;
         char c;
         int error = 0;
 
-        error = security_syslog(type);
+        error = security_syslog(type, from_file);
         if (error)
                 return error;
 
         switch (type) {
-        case 0:         /* Close log */
+        case SYSLOG_ACTION_CLOSE:       /* Close log */
                 break;
-        case 1:         /* Open log */
+        case SYSLOG_ACTION_OPEN:        /* Open log */
                 break;
-        case 2:         /* Read from log */
+        case SYSLOG_ACTION_READ:        /* Read from log */
                 error = -EINVAL;
                 if (!buf || len < 0)
                         goto out;
@@ -320,10 +306,12 @@ int do_syslog(int type, char __user *buf, int len)
                 if (!error)
                         error = i;
                 break;
-        case 4:         /* Read/clear last kernel messages */
+        /* Read/clear last kernel messages */
+        case SYSLOG_ACTION_READ_CLEAR:
                 do_clear = 1;
                 /* FALL THRU */
-        case 3:         /* Read last kernel messages */
+        /* Read last kernel messages */
+        case SYSLOG_ACTION_READ_ALL:
                 error = -EINVAL;
                 if (!buf || len < 0)
                         goto out;
@@ -376,21 +364,25 @@ int do_syslog(int type, char __user *buf, int len)
                         }
                 }
                 break;
-        case 5:         /* Clear ring buffer */
+        /* Clear ring buffer */
+        case SYSLOG_ACTION_CLEAR:
                 logged_chars = 0;
                 break;
-        case 6:         /* Disable logging to console */
+        /* Disable logging to console */
+        case SYSLOG_ACTION_CONSOLE_OFF:
                 if (saved_console_loglevel == -1)
                         saved_console_loglevel = console_loglevel;
                 console_loglevel = minimum_console_loglevel;
                 break;
-        case 7:         /* Enable logging to console */
+        /* Enable logging to console */
+        case SYSLOG_ACTION_CONSOLE_ON:
                 if (saved_console_loglevel != -1) {
                         console_loglevel = saved_console_loglevel;
                         saved_console_loglevel = -1;
                 }
                 break;
-        case 8:         /* Set level of messages printed to console */
+        /* Set level of messages printed to console */
+        case SYSLOG_ACTION_CONSOLE_LEVEL:
                 error = -EINVAL;
                 if (len < 1 || len > 8)
                         goto out;
@@ -401,10 +393,12 @@ int do_syslog(int type, char __user *buf, int len)
                 saved_console_loglevel = -1;
                 error = 0;
                 break;
-        case 9:         /* Number of chars in the log buffer */
+        /* Number of chars in the log buffer */
+        case SYSLOG_ACTION_SIZE_UNREAD:
                 error = log_end - log_start;
                 break;
-        case 10:        /* Size of the log buffer */
+        /* Size of the log buffer */
+        case SYSLOG_ACTION_SIZE_BUFFER:
                 error = log_buf_len;
                 break;
         default:
@@ -417,7 +411,7 @@ out:
 
 SYSCALL_DEFINE3(syslog, int, type, char __user *, buf, int, len)
 {
-        return do_syslog(type, buf, len);
+        return do_syslog(type, buf, len, SYSLOG_FROM_CALL);
 }
 
 /*
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8a68b2448468..33e7a38b6eb9 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1441,7 +1441,7 @@ static struct ctl_table fs_table[] = {
 };
 
 static struct ctl_table debug_table[] = {
-#if defined(CONFIG_X86) || defined(CONFIG_PPC)
+#if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_SPARC)
         {
                 .procname       = "exception-trace",
                 .data           = &show_unhandled_signals,
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index ea8384d3caa7..899ca51be5e8 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -46,15 +46,13 @@ static struct genl_family family = {
         .maxattr        = TASKSTATS_CMD_ATTR_MAX,
 };
 
-static struct nla_policy taskstats_cmd_get_policy[TASKSTATS_CMD_ATTR_MAX+1]
-__read_mostly = {
+static const struct nla_policy taskstats_cmd_get_policy[TASKSTATS_CMD_ATTR_MAX+1] = {
         [TASKSTATS_CMD_ATTR_PID]  = { .type = NLA_U32 },
         [TASKSTATS_CMD_ATTR_TGID] = { .type = NLA_U32 },
         [TASKSTATS_CMD_ATTR_REGISTER_CPUMASK] = { .type = NLA_STRING },
         [TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK] = { .type = NLA_STRING },};
 
-static struct nla_policy
-cgroupstats_cmd_get_policy[CGROUPSTATS_CMD_ATTR_MAX+1] __read_mostly = {
+static const struct nla_policy cgroupstats_cmd_get_policy[CGROUPSTATS_CMD_ATTR_MAX+1] = {
         [CGROUPSTATS_CMD_ATTR_FD] = { .type = NLA_U32 },
 };
 
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 13700833c181..1f663d23e85e 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -453,6 +453,18 @@ static inline int clocksource_watchdog_kthread(void *data) { return 0; }
 #endif /* CONFIG_CLOCKSOURCE_WATCHDOG */
 
 /**
+ * clocksource_suspend - suspend the clocksource(s)
+ */
+void clocksource_suspend(void)
+{
+        struct clocksource *cs;
+
+        list_for_each_entry_reverse(cs, &clocksource_list, list)
+                if (cs->suspend)
+                        cs->suspend(cs);
+}
+
+/**
  * clocksource_resume - resume the clocksource(s)
  */
 void clocksource_resume(void)
@@ -461,7 +473,7 @@ void clocksource_resume(void)
 
         list_for_each_entry(cs, &clocksource_list, list)
                 if (cs->resume)
-                        cs->resume();
+                        cs->resume(cs);
 
         clocksource_resume_watchdog();
 }
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 4800f933910e..7c0f180d6e9d 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -58,10 +58,10 @@ static s64			time_offset;
 static long                     time_constant = 2;
 
 /* maximum error (usecs):                                               */
-long                            time_maxerror = NTP_PHASE_LIMIT;
+static long                     time_maxerror = NTP_PHASE_LIMIT;
 
 /* estimated error (usecs):                                             */
-long                            time_esterror = NTP_PHASE_LIMIT;
+static long                     time_esterror = NTP_PHASE_LIMIT;
 
 /* frequency offset (scaled nsecs/secs):                                */
 static s64                      time_freq;
@@ -142,11 +142,11 @@ static void ntp_update_offset(long offset)
          * Select how the frequency is to be controlled
          * and in which mode (PLL or FLL).
          */
-        secs = xtime.tv_sec - time_reftime;
+        secs = get_seconds() - time_reftime;
         if (unlikely(time_status & STA_FREQHOLD))
                 secs = 0;
 
-        time_reftime = xtime.tv_sec;
+        time_reftime = get_seconds();
 
         offset64    = offset;
         freq_adj    = (offset64 * secs) <<
@@ -368,7 +368,7 @@ static inline void process_adj_status(struct timex *txc, struct timespec *ts)
          * reference time to current time.
          */
         if (!(time_status & STA_PLL) && (txc->status & STA_PLL))
-                time_reftime = xtime.tv_sec;
+                time_reftime = get_seconds();
 
         /* only set allowed bits */
         time_status &= STA_RONLY;
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index e2ab064c6d41..16736379a9ca 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -622,6 +622,7 @@ static int timekeeping_suspend(struct sys_device *dev, pm_message_t state)
         write_sequnlock_irqrestore(&xtime_lock, flags);
 
         clockevents_notify(CLOCK_EVT_NOTIFY_SUSPEND, NULL);
+        clocksource_suspend();
 
         return 0;
 }
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index d9d6206e0b14..07f945a99430 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -540,9 +540,10 @@ int blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
         if (ret)
                 return ret;
 
-        if (copy_to_user(arg, &buts, sizeof(buts)))
+        if (copy_to_user(arg, &buts, sizeof(buts))) {
+                blk_trace_remove(q);
                 return -EFAULT;
-
+        }
         return 0;
 }
 EXPORT_SYMBOL_GPL(blk_trace_setup);