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-rw-r--r--init/main.c9
-rw-r--r--kernel/trace/Kconfig5
-rw-r--r--kernel/trace/trace_events_hist.c2
-rw-r--r--kernel/trace/trace_osnoise.c56
4 files changed, 69 insertions, 3 deletions
diff --git a/init/main.c b/init/main.c
index f5b8246e8aa1..8d97aba78c3a 100644
--- a/init/main.c
+++ b/init/main.c
@@ -397,6 +397,12 @@ static int __init bootconfig_params(char *param, char *val,
return 0;
}
+static int __init warn_bootconfig(char *str)
+{
+ /* The 'bootconfig' has been handled by bootconfig_params(). */
+ return 0;
+}
+
static void __init setup_boot_config(void)
{
static char tmp_cmdline[COMMAND_LINE_SIZE] __initdata;
@@ -475,9 +481,8 @@ static int __init warn_bootconfig(char *str)
pr_warn("WARNING: 'bootconfig' found on the kernel command line but CONFIG_BOOT_CONFIG is not set.\n");
return 0;
}
-early_param("bootconfig", warn_bootconfig);
-
#endif
+early_param("bootconfig", warn_bootconfig);
/* Change NUL term back to "=", to make "param" the whole string. */
static void __init repair_env_string(char *param, char *val)
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index d567b1717c4c..3ee23f4d437f 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -219,6 +219,11 @@ config DYNAMIC_FTRACE_WITH_DIRECT_CALLS
depends on DYNAMIC_FTRACE_WITH_REGS
depends on HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
+config DYNAMIC_FTRACE_WITH_ARGS
+ def_bool y
+ depends on DYNAMIC_FTRACE
+ depends on HAVE_DYNAMIC_FTRACE_WITH_ARGS
+
config FUNCTION_PROFILER
bool "Kernel function profiler"
depends on FUNCTION_TRACER
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 949ef09dc537..a48aa2a2875b 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -3430,6 +3430,8 @@ trace_action_create_field_var(struct hist_trigger_data *hist_data,
event = data->match_data.event;
}
+ if (!event)
+ goto free;
/*
* At this point, we're looking at a field on another
* event. Because we can't modify a hist trigger on
diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index a7e3c24dee13..b61eefe5ccf5 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -253,6 +253,7 @@ static struct osnoise_data {
*/
static bool osnoise_busy;
+#ifdef CONFIG_PREEMPT_RT
/*
* Print the osnoise header info.
*/
@@ -261,6 +262,35 @@ static void print_osnoise_headers(struct seq_file *s)
if (osnoise_data.tainted)
seq_puts(s, "# osnoise is tainted!\n");
+ seq_puts(s, "# _-------=> irqs-off\n");
+ seq_puts(s, "# / _------=> need-resched\n");
+ seq_puts(s, "# | / _-----=> need-resched-lazy\n");
+ seq_puts(s, "# || / _----=> hardirq/softirq\n");
+ seq_puts(s, "# ||| / _---=> preempt-depth\n");
+ seq_puts(s, "# |||| / _--=> preempt-lazy-depth\n");
+ seq_puts(s, "# ||||| / _-=> migrate-disable\n");
+
+ seq_puts(s, "# |||||| / ");
+ seq_puts(s, " MAX\n");
+
+ seq_puts(s, "# ||||| / ");
+ seq_puts(s, " SINGLE Interference counters:\n");
+
+ seq_puts(s, "# ||||||| RUNTIME ");
+ seq_puts(s, " NOISE %% OF CPU NOISE +-----------------------------+\n");
+
+ seq_puts(s, "# TASK-PID CPU# ||||||| TIMESTAMP IN US ");
+ seq_puts(s, " IN US AVAILABLE IN US HW NMI IRQ SIRQ THREAD\n");
+
+ seq_puts(s, "# | | | ||||||| | | ");
+ seq_puts(s, " | | | | | | | |\n");
+}
+#else /* CONFIG_PREEMPT_RT */
+static void print_osnoise_headers(struct seq_file *s)
+{
+ if (osnoise_data.tainted)
+ seq_puts(s, "# osnoise is tainted!\n");
+
seq_puts(s, "# _-----=> irqs-off\n");
seq_puts(s, "# / _----=> need-resched\n");
seq_puts(s, "# | / _---=> hardirq/softirq\n");
@@ -279,6 +309,7 @@ static void print_osnoise_headers(struct seq_file *s)
seq_puts(s, "# | | | |||| | | ");
seq_puts(s, " | | | | | | | |\n");
}
+#endif /* CONFIG_PREEMPT_RT */
/*
* osnoise_taint - report an osnoise error.
@@ -323,6 +354,24 @@ static void trace_osnoise_sample(struct osnoise_sample *sample)
/*
* Print the timerlat header info.
*/
+#ifdef CONFIG_PREEMPT_RT
+static void print_timerlat_headers(struct seq_file *s)
+{
+ seq_puts(s, "# _-------=> irqs-off\n");
+ seq_puts(s, "# / _------=> need-resched\n");
+ seq_puts(s, "# | / _-----=> need-resched-lazy\n");
+ seq_puts(s, "# || / _----=> hardirq/softirq\n");
+ seq_puts(s, "# ||| / _---=> preempt-depth\n");
+ seq_puts(s, "# |||| / _--=> preempt-lazy-depth\n");
+ seq_puts(s, "# ||||| / _-=> migrate-disable\n");
+ seq_puts(s, "# |||||| /\n");
+ seq_puts(s, "# ||||||| ACTIVATION\n");
+ seq_puts(s, "# TASK-PID CPU# ||||||| TIMESTAMP ID ");
+ seq_puts(s, " CONTEXT LATENCY\n");
+ seq_puts(s, "# | | | ||||||| | | ");
+ seq_puts(s, " | |\n");
+}
+#else /* CONFIG_PREEMPT_RT */
static void print_timerlat_headers(struct seq_file *s)
{
seq_puts(s, "# _-----=> irqs-off\n");
@@ -336,6 +385,7 @@ static void print_timerlat_headers(struct seq_file *s)
seq_puts(s, "# | | | |||| | | ");
seq_puts(s, " | |\n");
}
+#endif /* CONFIG_PREEMPT_RT */
/*
* Record an timerlat_sample into the tracer buffer.
@@ -1025,9 +1075,13 @@ diff_osn_sample_stats(struct osnoise_variables *osn_var, struct osnoise_sample *
/*
* osnoise_stop_tracing - Stop tracing and the tracer.
*/
-static void osnoise_stop_tracing(void)
+static __always_inline void osnoise_stop_tracing(void)
{
struct trace_array *tr = osnoise_trace;
+
+ trace_array_printk_buf(tr->array_buffer.buffer, _THIS_IP_,
+ "stop tracing hit on cpu %d\n", smp_processor_id());
+
tracer_tracing_off(tr);
}