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Diffstat (limited to 'kernel/trace/trace_functions_graph.c')
-rw-r--r--kernel/trace/trace_functions_graph.c63
1 files changed, 41 insertions, 22 deletions
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index ca98445782ac..92382af7a213 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -83,13 +83,18 @@ static struct tracer_opt trace_opts[] = {
{ TRACER_OPT(funcgraph-irqs, TRACE_GRAPH_PRINT_IRQS) },
/* Display function name after trailing } */
{ TRACER_OPT(funcgraph-tail, TRACE_GRAPH_PRINT_TAIL) },
+ /* Include sleep time (scheduled out) between entry and return */
+ { TRACER_OPT(sleep-time, TRACE_GRAPH_SLEEP_TIME) },
+ /* Include time within nested functions */
+ { TRACER_OPT(graph-time, TRACE_GRAPH_GRAPH_TIME) },
{ } /* Empty entry */
};
static struct tracer_flags tracer_flags = {
/* Don't display overruns, proc, or tail by default */
.val = TRACE_GRAPH_PRINT_CPU | TRACE_GRAPH_PRINT_OVERHEAD |
- TRACE_GRAPH_PRINT_DURATION | TRACE_GRAPH_PRINT_IRQS,
+ TRACE_GRAPH_PRINT_DURATION | TRACE_GRAPH_PRINT_IRQS |
+ TRACE_GRAPH_SLEEP_TIME | TRACE_GRAPH_GRAPH_TIME,
.opts = trace_opts
};
@@ -107,8 +112,8 @@ enum {
};
static void
-print_graph_duration(unsigned long long duration, struct trace_seq *s,
- u32 flags);
+print_graph_duration(struct trace_array *tr, unsigned long long duration,
+ struct trace_seq *s, u32 flags);
/* Add a function return address to the trace stack on thread info.*/
int
@@ -653,6 +658,7 @@ static void
print_graph_irq(struct trace_iterator *iter, unsigned long addr,
enum trace_type type, int cpu, pid_t pid, u32 flags)
{
+ struct trace_array *tr = iter->tr;
struct trace_seq *s = &iter->seq;
struct trace_entry *ent = iter->ent;
@@ -660,7 +666,7 @@ print_graph_irq(struct trace_iterator *iter, unsigned long addr,
addr >= (unsigned long)__irqentry_text_end)
return;
- if (trace_flags & TRACE_ITER_CONTEXT_INFO) {
+ if (tr->trace_flags & TRACE_ITER_CONTEXT_INFO) {
/* Absolute time */
if (flags & TRACE_GRAPH_PRINT_ABS_TIME)
print_graph_abs_time(iter->ts, s);
@@ -676,19 +682,19 @@ print_graph_irq(struct trace_iterator *iter, unsigned long addr,
}
/* Latency format */
- if (trace_flags & TRACE_ITER_LATENCY_FMT)
+ if (tr->trace_flags & TRACE_ITER_LATENCY_FMT)
print_graph_lat_fmt(s, ent);
}
/* No overhead */
- print_graph_duration(0, s, flags | FLAGS_FILL_START);
+ print_graph_duration(tr, 0, s, flags | FLAGS_FILL_START);
if (type == TRACE_GRAPH_ENT)
trace_seq_puts(s, "==========>");
else
trace_seq_puts(s, "<==========");
- print_graph_duration(0, s, flags | FLAGS_FILL_END);
+ print_graph_duration(tr, 0, s, flags | FLAGS_FILL_END);
trace_seq_putc(s, '\n');
}
@@ -726,11 +732,11 @@ trace_print_graph_duration(unsigned long long duration, struct trace_seq *s)
}
static void
-print_graph_duration(unsigned long long duration, struct trace_seq *s,
- u32 flags)
+print_graph_duration(struct trace_array *tr, unsigned long long duration,
+ struct trace_seq *s, u32 flags)
{
if (!(flags & TRACE_GRAPH_PRINT_DURATION) ||
- !(trace_flags & TRACE_ITER_CONTEXT_INFO))
+ !(tr->trace_flags & TRACE_ITER_CONTEXT_INFO))
return;
/* No real adata, just filling the column with spaces */
@@ -764,6 +770,7 @@ print_graph_entry_leaf(struct trace_iterator *iter,
struct trace_seq *s, u32 flags)
{
struct fgraph_data *data = iter->private;
+ struct trace_array *tr = iter->tr;
struct ftrace_graph_ret *graph_ret;
struct ftrace_graph_ent *call;
unsigned long long duration;
@@ -792,7 +799,7 @@ print_graph_entry_leaf(struct trace_iterator *iter,
}
/* Overhead and duration */
- print_graph_duration(duration, s, flags);
+ print_graph_duration(tr, duration, s, flags);
/* Function */
for (i = 0; i < call->depth * TRACE_GRAPH_INDENT; i++)
@@ -810,6 +817,7 @@ print_graph_entry_nested(struct trace_iterator *iter,
{
struct ftrace_graph_ent *call = &entry->graph_ent;
struct fgraph_data *data = iter->private;
+ struct trace_array *tr = iter->tr;
int i;
if (data) {
@@ -825,7 +833,7 @@ print_graph_entry_nested(struct trace_iterator *iter,
}
/* No time */
- print_graph_duration(0, s, flags | FLAGS_FILL_FULL);
+ print_graph_duration(tr, 0, s, flags | FLAGS_FILL_FULL);
/* Function */
for (i = 0; i < call->depth * TRACE_GRAPH_INDENT; i++)
@@ -849,6 +857,7 @@ print_graph_prologue(struct trace_iterator *iter, struct trace_seq *s,
{
struct fgraph_data *data = iter->private;
struct trace_entry *ent = iter->ent;
+ struct trace_array *tr = iter->tr;
int cpu = iter->cpu;
/* Pid */
@@ -858,7 +867,7 @@ print_graph_prologue(struct trace_iterator *iter, struct trace_seq *s,
/* Interrupt */
print_graph_irq(iter, addr, type, cpu, ent->pid, flags);
- if (!(trace_flags & TRACE_ITER_CONTEXT_INFO))
+ if (!(tr->trace_flags & TRACE_ITER_CONTEXT_INFO))
return;
/* Absolute time */
@@ -876,7 +885,7 @@ print_graph_prologue(struct trace_iterator *iter, struct trace_seq *s,
}
/* Latency format */
- if (trace_flags & TRACE_ITER_LATENCY_FMT)
+ if (tr->trace_flags & TRACE_ITER_LATENCY_FMT)
print_graph_lat_fmt(s, ent);
return;
@@ -1027,6 +1036,7 @@ print_graph_return(struct ftrace_graph_ret *trace, struct trace_seq *s,
{
unsigned long long duration = trace->rettime - trace->calltime;
struct fgraph_data *data = iter->private;
+ struct trace_array *tr = iter->tr;
pid_t pid = ent->pid;
int cpu = iter->cpu;
int func_match = 1;
@@ -1058,7 +1068,7 @@ print_graph_return(struct ftrace_graph_ret *trace, struct trace_seq *s,
print_graph_prologue(iter, s, 0, 0, flags);
/* Overhead and duration */
- print_graph_duration(duration, s, flags);
+ print_graph_duration(tr, duration, s, flags);
/* Closing brace */
for (i = 0; i < trace->depth * TRACE_GRAPH_INDENT; i++)
@@ -1091,7 +1101,8 @@ static enum print_line_t
print_graph_comment(struct trace_seq *s, struct trace_entry *ent,
struct trace_iterator *iter, u32 flags)
{
- unsigned long sym_flags = (trace_flags & TRACE_ITER_SYM_MASK);
+ struct trace_array *tr = iter->tr;
+ unsigned long sym_flags = (tr->trace_flags & TRACE_ITER_SYM_MASK);
struct fgraph_data *data = iter->private;
struct trace_event *event;
int depth = 0;
@@ -1104,7 +1115,7 @@ print_graph_comment(struct trace_seq *s, struct trace_entry *ent,
print_graph_prologue(iter, s, 0, 0, flags);
/* No time */
- print_graph_duration(0, s, flags | FLAGS_FILL_FULL);
+ print_graph_duration(tr, 0, s, flags | FLAGS_FILL_FULL);
/* Indentation */
if (depth > 0)
@@ -1245,9 +1256,10 @@ static void print_lat_header(struct seq_file *s, u32 flags)
seq_printf(s, "#%.*s||| / \n", size, spaces);
}
-static void __print_graph_headers_flags(struct seq_file *s, u32 flags)
+static void __print_graph_headers_flags(struct trace_array *tr,
+ struct seq_file *s, u32 flags)
{
- int lat = trace_flags & TRACE_ITER_LATENCY_FMT;
+ int lat = tr->trace_flags & TRACE_ITER_LATENCY_FMT;
if (lat)
print_lat_header(s, flags);
@@ -1289,11 +1301,12 @@ static void print_graph_headers(struct seq_file *s)
void print_graph_headers_flags(struct seq_file *s, u32 flags)
{
struct trace_iterator *iter = s->private;
+ struct trace_array *tr = iter->tr;
- if (!(trace_flags & TRACE_ITER_CONTEXT_INFO))
+ if (!(tr->trace_flags & TRACE_ITER_CONTEXT_INFO))
return;
- if (trace_flags & TRACE_ITER_LATENCY_FMT) {
+ if (tr->trace_flags & TRACE_ITER_LATENCY_FMT) {
/* print nothing if the buffers are empty */
if (trace_empty(iter))
return;
@@ -1301,7 +1314,7 @@ void print_graph_headers_flags(struct seq_file *s, u32 flags)
print_trace_header(s, iter);
}
- __print_graph_headers_flags(s, flags);
+ __print_graph_headers_flags(tr, s, flags);
}
void graph_trace_open(struct trace_iterator *iter)
@@ -1362,6 +1375,12 @@ func_graph_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
if (bit == TRACE_GRAPH_PRINT_IRQS)
ftrace_graph_skip_irqs = !set;
+ if (bit == TRACE_GRAPH_SLEEP_TIME)
+ ftrace_graph_sleep_time_control(set);
+
+ if (bit == TRACE_GRAPH_GRAPH_TIME)
+ ftrace_graph_graph_time_control(set);
+
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.