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-rw-r--r--kernel/trace/ftrace.c5
-rw-r--r--kernel/trace/kprobe_event_gen_test.c4
-rw-r--r--kernel/trace/ring_buffer.c4
-rw-r--r--kernel/trace/trace.c2
-rw-r--r--kernel/trace/trace_events_hist.c12
-rw-r--r--kernel/trace/trace_hwlat.c11
-rw-r--r--kernel/trace/trace_osnoise.c10
7 files changed, 30 insertions, 18 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 29baa97d0d53..0feea145bb29 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1564,7 +1564,8 @@ static struct dyn_ftrace *lookup_rec(unsigned long start, unsigned long end)
key.flags = end; /* overload flags, as it is unsigned long */
for (pg = ftrace_pages_start; pg; pg = pg->next) {
- if (end < pg->records[0].ip ||
+ if (pg->index == 0 ||
+ end < pg->records[0].ip ||
start >= (pg->records[pg->index - 1].ip + MCOUNT_INSN_SIZE))
continue;
rec = bsearch(&key, pg->records, pg->index,
@@ -2591,7 +2592,7 @@ static void call_direct_funcs(unsigned long ip, unsigned long pip,
arch_ftrace_set_direct_caller(fregs, addr);
}
-struct ftrace_ops direct_ops = {
+static struct ftrace_ops direct_ops = {
.func = call_direct_funcs,
.flags = FTRACE_OPS_FL_DIRECT | FTRACE_OPS_FL_SAVE_REGS
| FTRACE_OPS_FL_PERMANENT,
diff --git a/kernel/trace/kprobe_event_gen_test.c b/kernel/trace/kprobe_event_gen_test.c
index 4850fdfe27f1..5a4b722b5045 100644
--- a/kernel/trace/kprobe_event_gen_test.c
+++ b/kernel/trace/kprobe_event_gen_test.c
@@ -146,7 +146,7 @@ static int __init test_gen_kprobe_cmd(void)
if (trace_event_file_is_valid(gen_kprobe_test))
gen_kprobe_test = NULL;
/* We got an error after creating the event, delete it */
- ret = kprobe_event_delete("gen_kprobe_test");
+ kprobe_event_delete("gen_kprobe_test");
goto out;
}
@@ -211,7 +211,7 @@ static int __init test_gen_kretprobe_cmd(void)
if (trace_event_file_is_valid(gen_kretprobe_test))
gen_kretprobe_test = NULL;
/* We got an error after creating the event, delete it */
- ret = kprobe_event_delete("gen_kretprobe_test");
+ kprobe_event_delete("gen_kretprobe_test");
goto out;
}
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index af50d931b020..c6f47b6cfd5f 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -354,10 +354,6 @@ static void rb_init_page(struct buffer_data_page *bpage)
local_set(&bpage->commit, 0);
}
-/*
- * Also stolen from mm/slob.c. Thanks to Mathieu Desnoyers for pointing
- * this issue out.
- */
static void free_buffer_page(struct buffer_page *bpage)
{
free_page((unsigned long)bpage->page);
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 45551c7b4c36..937e9676dfd4 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5167,6 +5167,8 @@ loff_t tracing_lseek(struct file *file, loff_t offset, int whence)
static const struct file_operations tracing_fops = {
.open = tracing_open,
.read = seq_read,
+ .read_iter = seq_read_iter,
+ .splice_read = generic_file_splice_read,
.write = tracing_write_stub,
.llseek = tracing_lseek,
.release = tracing_release,
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 89877a18f933..486cca3c2b75 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -1331,6 +1331,9 @@ static const char *hist_field_name(struct hist_field *field,
{
const char *field_name = "";
+ if (WARN_ON_ONCE(!field))
+ return field_name;
+
if (level > 1)
return field_name;
@@ -4235,6 +4238,15 @@ static int __create_val_field(struct hist_trigger_data *hist_data,
goto out;
}
+ /* Some types cannot be a value */
+ if (hist_field->flags & (HIST_FIELD_FL_GRAPH | HIST_FIELD_FL_PERCENT |
+ HIST_FIELD_FL_BUCKET | HIST_FIELD_FL_LOG2 |
+ HIST_FIELD_FL_SYM | HIST_FIELD_FL_SYM_OFFSET |
+ HIST_FIELD_FL_SYSCALL | HIST_FIELD_FL_STACKTRACE)) {
+ hist_err(file->tr, HIST_ERR_BAD_FIELD_MODIFIER, errpos(field_str));
+ ret = -EINVAL;
+ }
+
hist_data->fields[val_idx] = hist_field;
++hist_data->n_vals;
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c
index d440ddd5fd8b..2f37a6e68aa9 100644
--- a/kernel/trace/trace_hwlat.c
+++ b/kernel/trace/trace_hwlat.c
@@ -339,7 +339,7 @@ static void move_to_next_cpu(void)
cpumask_clear(current_mask);
cpumask_set_cpu(next_cpu, current_mask);
- sched_setaffinity(0, current_mask);
+ set_cpus_allowed_ptr(current, current_mask);
return;
change_mode:
@@ -446,7 +446,7 @@ static int start_single_kthread(struct trace_array *tr)
}
- sched_setaffinity(kthread->pid, current_mask);
+ set_cpus_allowed_ptr(kthread, current_mask);
kdata->kthread = kthread;
wake_up_process(kthread);
@@ -492,6 +492,10 @@ static int start_cpu_kthread(unsigned int cpu)
{
struct task_struct *kthread;
+ /* Do not start a new hwlatd thread if it is already running */
+ if (per_cpu(hwlat_per_cpu_data, cpu).kthread)
+ return 0;
+
kthread = kthread_run_on_cpu(kthread_fn, NULL, cpu, "hwlatd/%u");
if (IS_ERR(kthread)) {
pr_err(BANNER "could not start sampling thread\n");
@@ -584,9 +588,6 @@ static int start_per_cpu_kthreads(struct trace_array *tr)
*/
cpumask_and(current_mask, cpu_online_mask, tr->tracing_cpumask);
- for_each_online_cpu(cpu)
- per_cpu(hwlat_per_cpu_data, cpu).kthread = NULL;
-
for_each_cpu(cpu, current_mask) {
retval = start_cpu_kthread(cpu);
if (retval)
diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index 04f0fdae19a1..9176bb7a9bb4 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -217,7 +217,7 @@ struct osnoise_variables {
/*
* Per-cpu runtime information.
*/
-DEFINE_PER_CPU(struct osnoise_variables, per_cpu_osnoise_var);
+static DEFINE_PER_CPU(struct osnoise_variables, per_cpu_osnoise_var);
/*
* this_cpu_osn_var - Return the per-cpu osnoise_variables on its relative CPU
@@ -240,7 +240,7 @@ struct timerlat_variables {
u64 count;
};
-DEFINE_PER_CPU(struct timerlat_variables, per_cpu_timerlat_var);
+static DEFINE_PER_CPU(struct timerlat_variables, per_cpu_timerlat_var);
/*
* this_cpu_tmr_var - Return the per-cpu timerlat_variables on its relative CPU
@@ -332,7 +332,7 @@ struct timerlat_sample {
/*
* Protect the interface.
*/
-struct mutex interface_lock;
+static struct mutex interface_lock;
/*
* Tracer data.
@@ -2239,8 +2239,8 @@ static struct trace_min_max_param osnoise_print_stack = {
/*
* osnoise/timerlat_period: min 100 us, max 1 s
*/
-u64 timerlat_min_period = 100;
-u64 timerlat_max_period = 1000000;
+static u64 timerlat_min_period = 100;
+static u64 timerlat_max_period = 1000000;
static struct trace_min_max_param timerlat_period = {
.lock = &interface_lock,
.val = &osnoise_data.timerlat_period,
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-13 03:04:36 +0000