summaryrefslogtreecommitdiffstats
path: root/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'kernel')
-rw-r--r--kernel/audit_tree.c3
-rw-r--r--kernel/irq/manage.c5
-rw-r--r--kernel/lockdep.c22
-rw-r--r--kernel/panic.c2
-rw-r--r--kernel/power/disk.c51
-rw-r--r--kernel/power/main.c24
-rw-r--r--kernel/ptrace.c4
-rw-r--r--kernel/rcutree.c19
-rw-r--r--kernel/rcutree_trace.c14
-rw-r--r--kernel/resource.c46
-rw-r--r--kernel/sched.c10
-rw-r--r--kernel/slow-work.c4
-rw-r--r--kernel/softirq.c4
-rw-r--r--kernel/time/clocksource.c8
-rw-r--r--kernel/time/jiffies.c2
-rw-r--r--kernel/time/timekeeping.c12
-rw-r--r--kernel/trace/trace_branch.c8
-rw-r--r--kernel/trace/trace_power.c7
18 files changed, 124 insertions, 121 deletions
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index 917ab9525568..6e7351739a82 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -734,9 +734,6 @@ int audit_tag_tree(char *old, char *new)
dentry = dget(path.dentry);
path_put(&path);
- if (dentry == tagged->mnt_root && dentry == mnt->mnt_root)
- follow_up(&mnt, &dentry);
-
list_add_tail(&list, &tagged->mnt_list);
mutex_lock(&audit_filter_mutex);
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 7e2e7dd4cd2f..2734eca59243 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -109,10 +109,9 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
spin_lock_irqsave(&desc->lock, flags);
#ifdef CONFIG_GENERIC_PENDING_IRQ
- if (desc->status & IRQ_MOVE_PCNTXT || desc->status & IRQ_DISABLED) {
- cpumask_copy(desc->affinity, cpumask);
+ if (desc->status & IRQ_MOVE_PCNTXT)
desc->chip->set_affinity(irq, cpumask);
- } else {
+ else {
desc->status |= IRQ_MOVE_PENDING;
cpumask_copy(desc->pending_mask, cpumask);
}
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index b0f011866969..accb40cdb12a 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -2490,13 +2490,20 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this,
void lockdep_init_map(struct lockdep_map *lock, const char *name,
struct lock_class_key *key, int subclass)
{
- if (unlikely(!debug_locks))
+ lock->class_cache = NULL;
+#ifdef CONFIG_LOCK_STAT
+ lock->cpu = raw_smp_processor_id();
+#endif
+
+ if (DEBUG_LOCKS_WARN_ON(!name)) {
+ lock->name = "NULL";
return;
+ }
+
+ lock->name = name;
if (DEBUG_LOCKS_WARN_ON(!key))
return;
- if (DEBUG_LOCKS_WARN_ON(!name))
- return;
/*
* Sanity check, the lock-class key must be persistent:
*/
@@ -2505,12 +2512,11 @@ void lockdep_init_map(struct lockdep_map *lock, const char *name,
DEBUG_LOCKS_WARN_ON(1);
return;
}
- lock->name = name;
lock->key = key;
- lock->class_cache = NULL;
-#ifdef CONFIG_LOCK_STAT
- lock->cpu = raw_smp_processor_id();
-#endif
+
+ if (unlikely(!debug_locks))
+ return;
+
if (subclass)
register_lock_class(lock, subclass, 1);
}
diff --git a/kernel/panic.c b/kernel/panic.c
index 934fb377f4b3..3dcaa1661357 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -221,7 +221,7 @@ void add_taint(unsigned flag)
* post-warning case.
*/
if (flag != TAINT_CRAP && flag != TAINT_WARN && __debug_locks_off())
- printk(KERN_WARNING "Disabling lockdep due to kernel taint\n");
+ printk(KERN_WARNING "Disabling lock debugging due to kernel taint\n");
set_bit(flag, &tainted_mask);
}
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index 0854770b63b9..e71ca9cd81b2 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -646,13 +646,6 @@ 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
@@ -663,32 +656,42 @@ static int software_resume(void)
* here to avoid lockdep complaining.
*/
mutex_lock_nested(&pm_mutex, SINGLE_DEPTH_NESTING);
+
+ if (swsusp_resume_device)
+ goto Check_image;
+
+ if (!strlen(resume_file)) {
+ error = -ENOENT;
+ goto Unlock;
+ }
+
+ pr_debug("PM: Checking image partition %s\n", resume_file);
+
+ /* Check if the device is there */
+ swsusp_resume_device = name_to_dev_t(resume_file);
if (!swsusp_resume_device) {
- if (!strlen(resume_file)) {
- mutex_unlock(&pm_mutex);
- return -ENOENT;
- }
/*
* Some device discovery might still be in progress; we need
* to wait for this to finish.
*/
wait_for_device_probe();
+ /*
+ * We can't depend on SCSI devices being available after loading
+ * one of their modules until scsi_complete_async_scans() is
+ * called and the resume device usually is a SCSI one.
+ */
+ scsi_complete_async_scans();
+
swsusp_resume_device = name_to_dev_t(resume_file);
- pr_debug("PM: Resume from partition %s\n", resume_file);
- } else {
- pr_debug("PM: Resume from partition %d:%d\n",
- MAJOR(swsusp_resume_device),
- MINOR(swsusp_resume_device));
+ if (!swsusp_resume_device) {
+ error = -ENODEV;
+ goto Unlock;
+ }
}
- if (noresume) {
- /**
- * FIXME: If noresume is specified, we need to find the
- * partition and reset it back to normal swap space.
- */
- mutex_unlock(&pm_mutex);
- return 0;
- }
+ Check_image:
+ pr_debug("PM: Resume from partition %d:%d\n",
+ MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device));
pr_debug("PM: Checking hibernation image.\n");
error = swsusp_check();
diff --git a/kernel/power/main.c b/kernel/power/main.c
index f172f41858bb..f99ed6a75eac 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -291,20 +291,26 @@ static int suspend_enter(suspend_state_t state)
device_pm_lock();
+ if (suspend_ops->prepare) {
+ error = suspend_ops->prepare();
+ if (error)
+ goto Done;
+ }
+
error = device_power_down(PMSG_SUSPEND);
if (error) {
printk(KERN_ERR "PM: Some devices failed to power down\n");
- goto Done;
+ goto Platfrom_finish;
}
- if (suspend_ops->prepare) {
- error = suspend_ops->prepare();
+ if (suspend_ops->prepare_late) {
+ error = suspend_ops->prepare_late();
if (error)
goto Power_up_devices;
}
if (suspend_test(TEST_PLATFORM))
- goto Platfrom_finish;
+ goto Platform_wake;
error = disable_nonboot_cpus();
if (error || suspend_test(TEST_CPUS))
@@ -326,13 +332,17 @@ static int suspend_enter(suspend_state_t state)
Enable_cpus:
enable_nonboot_cpus();
- Platfrom_finish:
- if (suspend_ops->finish)
- suspend_ops->finish();
+ Platform_wake:
+ if (suspend_ops->wake)
+ suspend_ops->wake();
Power_up_devices:
device_power_up(PMSG_RESUME);
+ Platfrom_finish:
+ if (suspend_ops->finish)
+ suspend_ops->finish();
+
Done:
device_pm_unlock();
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index dfcd83ceee3b..0692ab5a0d67 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -188,7 +188,7 @@ int ptrace_attach(struct task_struct *task)
/* Protect exec's credential calculations against our interference;
* SUID, SGID and LSM creds get determined differently under ptrace.
*/
- retval = mutex_lock_interruptible(&current->cred_exec_mutex);
+ retval = mutex_lock_interruptible(&task->cred_exec_mutex);
if (retval < 0)
goto out;
@@ -232,7 +232,7 @@ repeat:
bad:
write_unlock_irqrestore(&tasklist_lock, flags);
task_unlock(task);
- mutex_unlock(&current->cred_exec_mutex);
+ mutex_unlock(&task->cred_exec_mutex);
out:
return retval;
}
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 7f3266922572..d2a372fb0b9b 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -530,8 +530,6 @@ static void note_new_gpnum(struct rcu_state *rsp, struct rcu_data *rdp)
rdp->qs_pending = 1;
rdp->passed_quiesc = 0;
rdp->gpnum = rsp->gpnum;
- rdp->n_rcu_pending_force_qs = rdp->n_rcu_pending +
- RCU_JIFFIES_TILL_FORCE_QS;
}
/*
@@ -578,8 +576,6 @@ rcu_start_gp(struct rcu_state *rsp, unsigned long flags)
rsp->gpnum++;
rsp->signaled = RCU_GP_INIT; /* Hold off force_quiescent_state. */
rsp->jiffies_force_qs = jiffies + RCU_JIFFIES_TILL_FORCE_QS;
- rdp->n_rcu_pending_force_qs = rdp->n_rcu_pending +
- RCU_JIFFIES_TILL_FORCE_QS;
record_gp_stall_check_time(rsp);
dyntick_record_completed(rsp, rsp->completed - 1);
note_new_gpnum(rsp, rdp);
@@ -1055,7 +1051,6 @@ static void force_quiescent_state(struct rcu_state *rsp, int relaxed)
{
unsigned long flags;
long lastcomp;
- struct rcu_data *rdp = rsp->rda[smp_processor_id()];
struct rcu_node *rnp = rcu_get_root(rsp);
u8 signaled;
@@ -1066,16 +1061,13 @@ static void force_quiescent_state(struct rcu_state *rsp, int relaxed)
return; /* Someone else is already on the job. */
}
if (relaxed &&
- (long)(rsp->jiffies_force_qs - jiffies) >= 0 &&
- (rdp->n_rcu_pending_force_qs - rdp->n_rcu_pending) >= 0)
+ (long)(rsp->jiffies_force_qs - jiffies) >= 0)
goto unlock_ret; /* no emergency and done recently. */
rsp->n_force_qs++;
spin_lock(&rnp->lock);
lastcomp = rsp->completed;
signaled = rsp->signaled;
rsp->jiffies_force_qs = jiffies + RCU_JIFFIES_TILL_FORCE_QS;
- rdp->n_rcu_pending_force_qs = rdp->n_rcu_pending +
- RCU_JIFFIES_TILL_FORCE_QS;
if (lastcomp == rsp->gpnum) {
rsp->n_force_qs_ngp++;
spin_unlock(&rnp->lock);
@@ -1144,8 +1136,7 @@ __rcu_process_callbacks(struct rcu_state *rsp, struct rcu_data *rdp)
* If an RCU GP has gone long enough, go check for dyntick
* idle CPUs and, if needed, send resched IPIs.
*/
- if ((long)(ACCESS_ONCE(rsp->jiffies_force_qs) - jiffies) < 0 ||
- (rdp->n_rcu_pending_force_qs - rdp->n_rcu_pending) < 0)
+ if ((long)(ACCESS_ONCE(rsp->jiffies_force_qs) - jiffies) < 0)
force_quiescent_state(rsp, 1);
/*
@@ -1230,8 +1221,7 @@ __call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu),
if (unlikely(++rdp->qlen > qhimark)) {
rdp->blimit = LONG_MAX;
force_quiescent_state(rsp, 0);
- } else if ((long)(ACCESS_ONCE(rsp->jiffies_force_qs) - jiffies) < 0 ||
- (rdp->n_rcu_pending_force_qs - rdp->n_rcu_pending) < 0)
+ } else if ((long)(ACCESS_ONCE(rsp->jiffies_force_qs) - jiffies) < 0)
force_quiescent_state(rsp, 1);
local_irq_restore(flags);
}
@@ -1290,8 +1280,7 @@ static int __rcu_pending(struct rcu_state *rsp, struct rcu_data *rdp)
/* Has an RCU GP gone long enough to send resched IPIs &c? */
if (ACCESS_ONCE(rsp->completed) != ACCESS_ONCE(rsp->gpnum) &&
- ((long)(ACCESS_ONCE(rsp->jiffies_force_qs) - jiffies) < 0 ||
- (rdp->n_rcu_pending_force_qs - rdp->n_rcu_pending) < 0))
+ ((long)(ACCESS_ONCE(rsp->jiffies_force_qs) - jiffies) < 0))
return 1;
/* nothing to do */
diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c
index 4ee954f6a8d5..4b1875ba9404 100644
--- a/kernel/rcutree_trace.c
+++ b/kernel/rcutree_trace.c
@@ -49,14 +49,12 @@ static void print_one_rcu_data(struct seq_file *m, struct rcu_data *rdp)
{
if (!rdp->beenonline)
return;
- seq_printf(m, "%3d%cc=%ld g=%ld pq=%d pqc=%ld qp=%d rpfq=%ld rp=%x",
+ seq_printf(m, "%3d%cc=%ld g=%ld pq=%d pqc=%ld qp=%d",
rdp->cpu,
cpu_is_offline(rdp->cpu) ? '!' : ' ',
rdp->completed, rdp->gpnum,
rdp->passed_quiesc, rdp->passed_quiesc_completed,
- rdp->qs_pending,
- rdp->n_rcu_pending_force_qs - rdp->n_rcu_pending,
- (int)(rdp->n_rcu_pending & 0xffff));
+ rdp->qs_pending);
#ifdef CONFIG_NO_HZ
seq_printf(m, " dt=%d/%d dn=%d df=%lu",
rdp->dynticks->dynticks,
@@ -102,14 +100,12 @@ static void print_one_rcu_data_csv(struct seq_file *m, struct rcu_data *rdp)
{
if (!rdp->beenonline)
return;
- seq_printf(m, "%d,%s,%ld,%ld,%d,%ld,%d,%ld,%ld",
+ seq_printf(m, "%d,%s,%ld,%ld,%d,%ld,%d",
rdp->cpu,
cpu_is_offline(rdp->cpu) ? "\"Y\"" : "\"N\"",
rdp->completed, rdp->gpnum,
rdp->passed_quiesc, rdp->passed_quiesc_completed,
- rdp->qs_pending,
- rdp->n_rcu_pending_force_qs - rdp->n_rcu_pending,
- rdp->n_rcu_pending);
+ rdp->qs_pending);
#ifdef CONFIG_NO_HZ
seq_printf(m, ",%d,%d,%d,%lu",
rdp->dynticks->dynticks,
@@ -123,7 +119,7 @@ static void print_one_rcu_data_csv(struct seq_file *m, struct rcu_data *rdp)
static int show_rcudata_csv(struct seq_file *m, void *unused)
{
- seq_puts(m, "\"CPU\",\"Online?\",\"c\",\"g\",\"pq\",\"pqc\",\"pq\",\"rpfq\",\"rp\",");
+ seq_puts(m, "\"CPU\",\"Online?\",\"c\",\"g\",\"pq\",\"pqc\",\"pq\",");
#ifdef CONFIG_NO_HZ
seq_puts(m, "\"dt\",\"dt nesting\",\"dn\",\"df\",");
#endif /* #ifdef CONFIG_NO_HZ */
diff --git a/kernel/resource.c b/kernel/resource.c
index fd5d7d574bb9..ac5f3a36923f 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -533,43 +533,21 @@ static void __init __reserve_region_with_split(struct resource *root,
res->end = end;
res->flags = IORESOURCE_BUSY;
- for (;;) {
- conflict = __request_resource(parent, res);
- if (!conflict)
- break;
- if (conflict != parent) {
- parent = conflict;
- if (!(conflict->flags & IORESOURCE_BUSY))
- continue;
- }
-
- /* Uhhuh, that didn't work out.. */
- kfree(res);
- res = NULL;
- break;
- }
-
- if (!res) {
- /* failed, split and try again */
-
- /* conflict covered whole area */
- if (conflict->start <= start && conflict->end >= end)
- return;
+ conflict = __request_resource(parent, res);
+ if (!conflict)
+ return;
- if (conflict->start > start)
- __reserve_region_with_split(root, start, conflict->start-1, name);
- if (!(conflict->flags & IORESOURCE_BUSY)) {
- resource_size_t common_start, common_end;
+ /* failed, split and try again */
+ kfree(res);
- common_start = max(conflict->start, start);
- common_end = min(conflict->end, end);
- if (common_start < common_end)
- __reserve_region_with_split(root, common_start, common_end, name);
- }
- if (conflict->end < end)
- __reserve_region_with_split(root, conflict->end+1, end, name);
- }
+ /* conflict covered whole area */
+ if (conflict->start <= start && conflict->end >= end)
+ return;
+ if (conflict->start > start)
+ __reserve_region_with_split(root, start, conflict->start-1, name);
+ if (conflict->end < end)
+ __reserve_region_with_split(root, conflict->end+1, end, name);
}
void __init reserve_region_with_split(struct resource *root,
diff --git a/kernel/sched.c b/kernel/sched.c
index 5724508c3b66..b902e587a3a0 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4846,7 +4846,7 @@ void scheduler_tick(void)
#endif
}
-unsigned long get_parent_ip(unsigned long addr)
+notrace unsigned long get_parent_ip(unsigned long addr)
{
if (in_lock_functions(addr)) {
addr = CALLER_ADDR2;
@@ -7367,8 +7367,12 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
cpumask_or(groupmask, groupmask, sched_group_cpus(group));
cpulist_scnprintf(str, sizeof(str), sched_group_cpus(group));
- printk(KERN_CONT " %s (__cpu_power = %d)", str,
- group->__cpu_power);
+
+ printk(KERN_CONT " %s", str);
+ if (group->__cpu_power != SCHED_LOAD_SCALE) {
+ printk(KERN_CONT " (__cpu_power = %d)",
+ group->__cpu_power);
+ }
group = group->next;
} while (group != sd->groups);
diff --git a/kernel/slow-work.c b/kernel/slow-work.c
index cf2bc01186ef..b28d19135f43 100644
--- a/kernel/slow-work.c
+++ b/kernel/slow-work.c
@@ -609,14 +609,14 @@ void slow_work_unregister_user(void)
if (slow_work_user_count == 0) {
printk(KERN_NOTICE "Slow work thread pool: Shutting down\n");
slow_work_threads_should_exit = true;
+ del_timer_sync(&slow_work_cull_timer);
+ del_timer_sync(&slow_work_oom_timer);
wake_up_all(&slow_work_thread_wq);
wait_for_completion(&slow_work_last_thread_exited);
printk(KERN_NOTICE "Slow work thread pool:"
" Shut down complete\n");
}
- del_timer_sync(&slow_work_cull_timer);
-
mutex_unlock(&slow_work_user_lock);
}
EXPORT_SYMBOL(slow_work_unregister_user);
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 2fecefacdc5b..b525dd348511 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -472,9 +472,9 @@ void tasklet_kill(struct tasklet_struct *t)
printk("Attempt to kill tasklet from interrupt\n");
while (test_and_set_bit(TASKLET_STATE_SCHED, &t->state)) {
- do
+ do {
yield();
- while (test_bit(TASKLET_STATE_SCHED, &t->state));
+ } while (test_bit(TASKLET_STATE_SCHED, &t->state));
}
tasklet_unlock_wait(t);
clear_bit(TASKLET_STATE_SCHED, &t->state);
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index c46c931a7fe7..ecfd7b5187e0 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -181,12 +181,12 @@ static void clocksource_watchdog(unsigned long data)
resumed = test_and_clear_bit(0, &watchdog_resumed);
- wdnow = watchdog->read();
+ wdnow = watchdog->read(watchdog);
wd_nsec = cyc2ns(watchdog, (wdnow - watchdog_last) & watchdog->mask);
watchdog_last = wdnow;
list_for_each_entry_safe(cs, tmp, &watchdog_list, wd_list) {
- csnow = cs->read();
+ csnow = cs->read(cs);
if (unlikely(resumed)) {
cs->wd_last = csnow;
@@ -247,7 +247,7 @@ static void clocksource_check_watchdog(struct clocksource *cs)
list_add(&cs->wd_list, &watchdog_list);
if (!started && watchdog) {
- watchdog_last = watchdog->read();
+ watchdog_last = watchdog->read(watchdog);
watchdog_timer.expires = jiffies + WATCHDOG_INTERVAL;
add_timer_on(&watchdog_timer,
cpumask_first(cpu_online_mask));
@@ -268,7 +268,7 @@ static void clocksource_check_watchdog(struct clocksource *cs)
cse->flags &= ~CLOCK_SOURCE_WATCHDOG;
/* Start if list is not empty */
if (!list_empty(&watchdog_list)) {
- watchdog_last = watchdog->read();
+ watchdog_last = watchdog->read(watchdog);
watchdog_timer.expires =
jiffies + WATCHDOG_INTERVAL;
add_timer_on(&watchdog_timer,
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
index 06f197560f3b..c3f6c30816e3 100644
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -50,7 +50,7 @@
*/
#define JIFFIES_SHIFT 8
-static cycle_t jiffies_read(void)
+static cycle_t jiffies_read(struct clocksource *cs)
{
return (cycle_t) jiffies;
}
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 900f1b6598d1..687dff49f6e7 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -182,7 +182,7 @@ EXPORT_SYMBOL(do_settimeofday);
*/
static void change_clocksource(void)
{
- struct clocksource *new;
+ struct clocksource *new, *old;
new = clocksource_get_next();
@@ -191,11 +191,16 @@ static void change_clocksource(void)
clocksource_forward_now();
- new->raw_time = clock->raw_time;
+ if (clocksource_enable(new))
+ return;
+ new->raw_time = clock->raw_time;
+ old = clock;
clock = new;
+ clocksource_disable(old);
+
clock->cycle_last = 0;
- clock->cycle_last = clocksource_read(new);
+ clock->cycle_last = clocksource_read(clock);
clock->error = 0;
clock->xtime_nsec = 0;
clocksource_calculate_interval(clock, NTP_INTERVAL_LENGTH);
@@ -292,6 +297,7 @@ void __init timekeeping_init(void)
ntp_init();
clock = clocksource_get_next();
+ clocksource_enable(clock);
clocksource_calculate_interval(clock, NTP_INTERVAL_LENGTH);
clock->cycle_last = clocksource_read(clock);
diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c
index ad8c22efff41..8333715e4066 100644
--- a/kernel/trace/trace_branch.c
+++ b/kernel/trace/trace_branch.c
@@ -155,6 +155,13 @@ static enum print_line_t trace_branch_print(struct trace_iterator *iter,
return TRACE_TYPE_HANDLED;
}
+static void branch_print_header(struct seq_file *s)
+{
+ seq_puts(s, "# TASK-PID CPU# TIMESTAMP CORRECT"
+ " FUNC:FILE:LINE\n");
+ seq_puts(s, "# | | | | | "
+ " |\n");
+}
static struct trace_event trace_branch_event = {
.type = TRACE_BRANCH,
@@ -169,6 +176,7 @@ static struct tracer branch_trace __read_mostly =
#ifdef CONFIG_FTRACE_SELFTEST
.selftest = trace_selftest_startup_branch,
#endif /* CONFIG_FTRACE_SELFTEST */
+ .print_header = branch_print_header,
};
__init static int init_branch_tracer(void)
diff --git a/kernel/trace/trace_power.c b/kernel/trace/trace_power.c
index bae791ebcc51..118439709fb7 100644
--- a/kernel/trace/trace_power.c
+++ b/kernel/trace/trace_power.c
@@ -186,6 +186,12 @@ static enum print_line_t power_print_line(struct trace_iterator *iter)
return TRACE_TYPE_UNHANDLED;
}
+static void power_print_header(struct seq_file *s)
+{
+ seq_puts(s, "# TIMESTAMP STATE EVENT\n");
+ seq_puts(s, "# | | |\n");
+}
+
static struct tracer power_tracer __read_mostly =
{
.name = "power",
@@ -194,6 +200,7 @@ static struct tracer power_tracer __read_mostly =
.stop = stop_power_trace,
.reset = power_trace_reset,
.print_line = power_print_line,
+ .print_header = power_print_header,
};
static int init_power_trace(void)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 01:20:45 +0000