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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-17 20:58:12 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-17 20:58:12 -0800
commit848b81415c42ff3dc9a4204749087b015c37ef66 (patch)
tree391da3a73aea48632248220d2d6b8d45a88f7eae /kernel
parent992956189de58cae9f2be40585bc25105cd7c5ad (diff)
parent6fd59a83b9261fa53eaf98fb5514abba504a3ea3 (diff)
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Merge branch 'akpm' (Andrew's patch-bomb)
Merge misc patches from Andrew Morton: "Incoming: - lots of misc stuff - backlight tree updates - lib/ updates - Oleg's percpu-rwsem changes - checkpatch - rtc - aoe - more checkpoint/restart support I still have a pile of MM stuff pending - Pekka should be merging later today after which that is good to go. A number of other things are twiddling thumbs awaiting maintainer merges." * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (180 commits) scatterlist: don't BUG when we can trivially return a proper error. docs: update documentation about /proc/<pid>/fdinfo/<fd> fanotify output fs, fanotify: add @mflags field to fanotify output docs: add documentation about /proc/<pid>/fdinfo/<fd> output fs, notify: add procfs fdinfo helper fs, exportfs: add exportfs_encode_inode_fh() helper fs, exportfs: escape nil dereference if no s_export_op present fs, epoll: add procfs fdinfo helper fs, eventfd: add procfs fdinfo helper procfs: add ability to plug in auxiliary fdinfo providers tools/testing/selftests/kcmp/kcmp_test.c: print reason for failure in kcmp_test breakpoint selftests: print failure status instead of cause make error kcmp selftests: print fail status instead of cause make error kcmp selftests: make run_tests fix mem-hotplug selftests: print failure status instead of cause make error cpu-hotplug selftests: print failure status instead of cause make error mqueue selftests: print failure status instead of cause make error vm selftests: print failure status instead of cause make error ubifs: use prandom_bytes mtd: nandsim: use prandom_bytes ...
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cgroup.c1
-rw-r--r--kernel/compat.c17
-rw-r--r--kernel/module.c3
-rw-r--r--kernel/pid.c15
-rw-r--r--kernel/printk.c40
-rw-r--r--kernel/ptrace.c3
-rw-r--r--kernel/trace/ftrace.c4
-rw-r--r--kernel/trace/trace_uprobe.c8
-rw-r--r--kernel/watchdog.c13
9 files changed, 55 insertions, 49 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 9915ffe01372..4855892798fd 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1333,7 +1333,6 @@ static int cgroup_remount(struct super_block *sb, int *flags, char *data)
if (ret)
goto out_unlock;
- /* See feature-removal-schedule.txt */
if (opts.subsys_mask != root->actual_subsys_mask || opts.release_agent)
pr_warning("cgroup: option changes via remount are deprecated (pid=%d comm=%s)\n",
task_tgid_nr(current), current->comm);
diff --git a/kernel/compat.c b/kernel/compat.c
index c28a306ae05c..f6150e92dfc9 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -1215,6 +1215,23 @@ compat_sys_sysinfo(struct compat_sysinfo __user *info)
return 0;
}
+#ifdef __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL
+asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
+ struct compat_timespec __user *interval)
+{
+ struct timespec t;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs(KERNEL_DS);
+ ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
+ set_fs(old_fs);
+ if (put_compat_timespec(&t, interval))
+ return -EFAULT;
+ return ret;
+}
+#endif /* __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL */
+
/*
* Allocate user-space memory for the duration of a single system call,
* in order to marshall parameters inside a compat thunk.
diff --git a/kernel/module.c b/kernel/module.c
index 6e48c3a43599..808bd62e1723 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -372,9 +372,6 @@ static bool check_symbol(const struct symsearch *syms,
printk(KERN_WARNING "Symbol %s is being used "
"by a non-GPL module, which will not "
"be allowed in the future\n", fsa->name);
- printk(KERN_WARNING "Please see the file "
- "Documentation/feature-removal-schedule.txt "
- "in the kernel source tree for more details.\n");
}
}
diff --git a/kernel/pid.c b/kernel/pid.c
index 3e2cf8100acc..36aa02ff17d6 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -84,21 +84,6 @@ struct pid_namespace init_pid_ns = {
};
EXPORT_SYMBOL_GPL(init_pid_ns);
-int is_container_init(struct task_struct *tsk)
-{
- int ret = 0;
- struct pid *pid;
-
- rcu_read_lock();
- pid = task_pid(tsk);
- if (pid != NULL && pid->numbers[pid->level].nr == 1)
- ret = 1;
- rcu_read_unlock();
-
- return ret;
-}
-EXPORT_SYMBOL(is_container_init);
-
/*
* Note: disable interrupts while the pidmap_lock is held as an
* interrupt might come in and do read_lock(&tasklist_lock).
diff --git a/kernel/printk.c b/kernel/printk.c
index 22e070f3470a..19c0d7bcf24a 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -747,6 +747,21 @@ void __init setup_log_buf(int early)
free, (free * 100) / __LOG_BUF_LEN);
}
+static bool __read_mostly ignore_loglevel;
+
+static int __init ignore_loglevel_setup(char *str)
+{
+ ignore_loglevel = 1;
+ printk(KERN_INFO "debug: ignoring loglevel setting.\n");
+
+ return 0;
+}
+
+early_param("ignore_loglevel", ignore_loglevel_setup);
+module_param(ignore_loglevel, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ignore_loglevel, "ignore loglevel setting, to"
+ "print all kernel messages to the console.");
+
#ifdef CONFIG_BOOT_PRINTK_DELAY
static int boot_delay; /* msecs delay after each printk during bootup */
@@ -770,13 +785,15 @@ static int __init boot_delay_setup(char *str)
}
__setup("boot_delay=", boot_delay_setup);
-static void boot_delay_msec(void)
+static void boot_delay_msec(int level)
{
unsigned long long k;
unsigned long timeout;
- if (boot_delay == 0 || system_state != SYSTEM_BOOTING)
+ if ((boot_delay == 0 || system_state != SYSTEM_BOOTING)
+ || (level >= console_loglevel && !ignore_loglevel)) {
return;
+ }
k = (unsigned long long)loops_per_msec * boot_delay;
@@ -795,7 +812,7 @@ static void boot_delay_msec(void)
}
}
#else
-static inline void boot_delay_msec(void)
+static inline void boot_delay_msec(int level)
{
}
#endif
@@ -1238,21 +1255,6 @@ SYSCALL_DEFINE3(syslog, int, type, char __user *, buf, int, len)
return do_syslog(type, buf, len, SYSLOG_FROM_CALL);
}
-static bool __read_mostly ignore_loglevel;
-
-static int __init ignore_loglevel_setup(char *str)
-{
- ignore_loglevel = 1;
- printk(KERN_INFO "debug: ignoring loglevel setting.\n");
-
- return 0;
-}
-
-early_param("ignore_loglevel", ignore_loglevel_setup);
-module_param(ignore_loglevel, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(ignore_loglevel, "ignore loglevel setting, to"
- "print all kernel messages to the console.");
-
/*
* Call the console drivers, asking them to write out
* log_buf[start] to log_buf[end - 1].
@@ -1498,7 +1500,7 @@ asmlinkage int vprintk_emit(int facility, int level,
int this_cpu;
int printed_len = 0;
- boot_delay_msec();
+ boot_delay_msec(level);
printk_delay();
/* This stops the holder of console_sem just where we want him */
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 7b09b88862cc..1599157336a6 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -463,6 +463,9 @@ void exit_ptrace(struct task_struct *tracer)
return;
list_for_each_entry_safe(p, n, &tracer->ptraced, ptrace_entry) {
+ if (unlikely(p->ptrace & PT_EXITKILL))
+ send_sig_info(SIGKILL, SEND_SIG_FORCED, p);
+
if (__ptrace_detach(tracer, p))
list_add(&p->ptrace_entry, &ptrace_dead);
}
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index afd092de45b7..3ffe4c5ad3f3 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2675,12 +2675,12 @@ ftrace_notrace_open(struct inode *inode, struct file *file)
}
loff_t
-ftrace_regex_lseek(struct file *file, loff_t offset, int origin)
+ftrace_regex_lseek(struct file *file, loff_t offset, int whence)
{
loff_t ret;
if (file->f_mode & FMODE_READ)
- ret = seq_lseek(file, offset, origin);
+ ret = seq_lseek(file, offset, whence);
else
file->f_pos = ret = 1;
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 9614db8b0f8c..c86e6d4f67fb 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -22,6 +22,7 @@
#include <linux/uaccess.h>
#include <linux/uprobes.h>
#include <linux/namei.h>
+#include <linux/string.h>
#include "trace_probe.h"
@@ -263,16 +264,15 @@ static int create_trace_uprobe(int argc, char **argv)
/* setup a probe */
if (!event) {
- char *tail = strrchr(filename, '/');
+ char *tail;
char *ptr;
- ptr = kstrdup((tail ? tail + 1 : filename), GFP_KERNEL);
- if (!ptr) {
+ tail = kstrdup(kbasename(filename), GFP_KERNEL);
+ if (!tail) {
ret = -ENOMEM;
goto fail_address_parse;
}
- tail = ptr;
ptr = strpbrk(tail, ".-_");
if (ptr)
*ptr = '\0';
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index c8c21be11ab4..997c6a16ec22 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -31,6 +31,7 @@
int watchdog_enabled = 1;
int __read_mostly watchdog_thresh = 10;
static int __read_mostly watchdog_disabled;
+static u64 __read_mostly sample_period;
static DEFINE_PER_CPU(unsigned long, watchdog_touch_ts);
static DEFINE_PER_CPU(struct task_struct *, softlockup_watchdog);
@@ -116,7 +117,7 @@ static unsigned long get_timestamp(int this_cpu)
return cpu_clock(this_cpu) >> 30LL; /* 2^30 ~= 10^9 */
}
-static u64 get_sample_period(void)
+static void set_sample_period(void)
{
/*
* convert watchdog_thresh from seconds to ns
@@ -125,7 +126,7 @@ static u64 get_sample_period(void)
* and hard thresholds) to increment before the
* hardlockup detector generates a warning
*/
- return get_softlockup_thresh() * ((u64)NSEC_PER_SEC / 5);
+ sample_period = get_softlockup_thresh() * ((u64)NSEC_PER_SEC / 5);
}
/* Commands for resetting the watchdog */
@@ -275,7 +276,7 @@ static enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer)
wake_up_process(__this_cpu_read(softlockup_watchdog));
/* .. and repeat */
- hrtimer_forward_now(hrtimer, ns_to_ktime(get_sample_period()));
+ hrtimer_forward_now(hrtimer, ns_to_ktime(sample_period));
if (touch_ts == 0) {
if (unlikely(__this_cpu_read(softlockup_touch_sync))) {
@@ -356,7 +357,7 @@ static void watchdog_enable(unsigned int cpu)
hrtimer->function = watchdog_timer_fn;
/* done here because hrtimer_start can only pin to smp_processor_id() */
- hrtimer_start(hrtimer, ns_to_ktime(get_sample_period()),
+ hrtimer_start(hrtimer, ns_to_ktime(sample_period),
HRTIMER_MODE_REL_PINNED);
/* initialize timestamp */
@@ -386,7 +387,7 @@ static int watchdog_should_run(unsigned int cpu)
/*
* The watchdog thread function - touches the timestamp.
*
- * It only runs once every get_sample_period() seconds (4 seconds by
+ * It only runs once every sample_period seconds (4 seconds by
* default) to reset the softlockup timestamp. If this gets delayed
* for more than 2*watchdog_thresh seconds then the debug-printout
* triggers in watchdog_timer_fn().
@@ -519,6 +520,7 @@ int proc_dowatchdog(struct ctl_table *table, int write,
if (ret || !write)
return ret;
+ set_sample_period();
if (watchdog_enabled && watchdog_thresh)
watchdog_enable_all_cpus();
else
@@ -540,6 +542,7 @@ static struct smp_hotplug_thread watchdog_threads = {
void __init lockup_detector_init(void)
{
+ set_sample_period();
if (smpboot_register_percpu_thread(&watchdog_threads)) {
pr_err("Failed to create watchdog threads, disabled\n");
watchdog_disabled = -ENODEV;