From: Tom Zanussi <tom.zanussi@linux.intel.com>
To: rostedt@goodmis.org
Cc: tglx@linutronix.de, mhiramat@kernel.org, namhyung@kernel.org,
linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org,
Tom Zanussi <tom.zanussi@linux.intel.com>
Subject: [RFC][PATCH 05/21] tracing: Add ring buffer event param to hist field functions
Date: Wed, 8 Feb 2017 11:25:01 -0600 [thread overview]
Message-ID: <6857ec4858623e98afb0f3d52476b3f75169189b.1486569306.git.tom.zanussi@linux.intel.com> (raw)
In-Reply-To: <cover.1486569306.git.tom.zanussi@linux.intel.com>
In-Reply-To: <cover.1486569306.git.tom.zanussi@linux.intel.com>
Some events such as timestamps require access to a ring_buffer_event
struct; add a param so that hist field functions can access that.
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
---
kernel/trace/trace_events_hist.c | 39 ++++++++++++++++++++++++---------------
1 file changed, 24 insertions(+), 15 deletions(-)
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 902df2c..38faa08 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -25,7 +25,8 @@
struct hist_field;
-typedef u64 (*hist_field_fn_t) (struct hist_field *field, void *event);
+typedef u64 (*hist_field_fn_t) (struct hist_field *field, void *event,
+ struct ring_buffer_event *rbe);
#define HIST_FIELD_OPERANDS_MAX 2
@@ -39,24 +40,28 @@ struct hist_field {
struct hist_field *operands[HIST_FIELD_OPERANDS_MAX];
};
-static u64 hist_field_none(struct hist_field *field, void *event)
+static u64 hist_field_none(struct hist_field *field, void *event,
+ struct ring_buffer_event *rbe)
{
return 0;
}
-static u64 hist_field_counter(struct hist_field *field, void *event)
+static u64 hist_field_counter(struct hist_field *field, void *event,
+ struct ring_buffer_event *rbe)
{
return 1;
}
-static u64 hist_field_string(struct hist_field *hist_field, void *event)
+static u64 hist_field_string(struct hist_field *hist_field, void *event,
+ struct ring_buffer_event *rbe)
{
char *addr = (char *)(event + hist_field->field->offset);
return (u64)(unsigned long)addr;
}
-static u64 hist_field_dynstring(struct hist_field *hist_field, void *event)
+static u64 hist_field_dynstring(struct hist_field *hist_field, void *event,
+ struct ring_buffer_event *rbe)
{
u32 str_item = *(u32 *)(event + hist_field->field->offset);
int str_loc = str_item & 0xffff;
@@ -65,24 +70,28 @@ static u64 hist_field_dynstring(struct hist_field *hist_field, void *event)
return (u64)(unsigned long)addr;
}
-static u64 hist_field_pstring(struct hist_field *hist_field, void *event)
+static u64 hist_field_pstring(struct hist_field *hist_field, void *event,
+ struct ring_buffer_event *rbe)
{
char **addr = (char **)(event + hist_field->field->offset);
return (u64)(unsigned long)*addr;
}
-static u64 hist_field_log2(struct hist_field *hist_field, void *event)
+static u64 hist_field_log2(struct hist_field *hist_field, void *event,
+ struct ring_buffer_event *rbe)
{
struct hist_field *operand = hist_field->operands[0];
- u64 val = operand->fn(operand, event);
+ u64 val = operand->fn(operand, event, rbe);
return (u64) ilog2(roundup_pow_of_two(val));
}
#define DEFINE_HIST_FIELD_FN(type) \
-static u64 hist_field_##type(struct hist_field *hist_field, void *event)\
+ static u64 hist_field_##type(struct hist_field *hist_field, \
+ void *event, \
+ struct ring_buffer_event *rbe) \
{ \
type *addr = (type *)(event + hist_field->field->offset); \
\
@@ -869,8 +878,8 @@ static bool need_tracing_map_ops(struct hist_trigger_data *hist_data)
}
static void hist_trigger_elt_update(struct hist_trigger_data *hist_data,
- struct tracing_map_elt *elt,
- void *rec)
+ struct tracing_map_elt *elt, void *rec,
+ struct ring_buffer_event *rbe)
{
struct hist_field *hist_field;
unsigned int i;
@@ -878,7 +887,7 @@ static void hist_trigger_elt_update(struct hist_trigger_data *hist_data,
for_each_hist_val_field(i, hist_data) {
hist_field = hist_data->fields[i];
- hist_val = hist_field->fn(hist_field, rec);
+ hist_val = hist_field->fn(hist_field, rec, rbe);
tracing_map_update_sum(elt, i, hist_val);
}
}
@@ -908,7 +917,7 @@ static inline void add_to_key(char *compound_key, void *key,
}
static void event_hist_trigger(struct event_trigger_data *data, void *rec,
- struct ring_buffer_event *event)
+ struct ring_buffer_event *rbe)
{
struct hist_trigger_data *hist_data = data->private_data;
bool use_compound_key = (hist_data->n_keys > 1);
@@ -937,7 +946,7 @@ static void event_hist_trigger(struct event_trigger_data *data, void *rec,
key = entries;
} else {
- field_contents = key_field->fn(key_field, rec);
+ field_contents = key_field->fn(key_field, rec, rbe);
if (key_field->flags & HIST_FIELD_FL_STRING) {
key = (void *)(unsigned long)field_contents;
use_compound_key = true;
@@ -954,7 +963,7 @@ static void event_hist_trigger(struct event_trigger_data *data, void *rec,
elt = tracing_map_insert(hist_data->map, key);
if (elt)
- hist_trigger_elt_update(hist_data, elt, rec);
+ hist_trigger_elt_update(hist_data, elt, rec, rbe);
}
static void hist_trigger_stacktrace_print(struct seq_file *m,
--
1.9.3
next prev parent reply other threads:[~2017-02-08 17:27 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-08 17:24 [RFC][PATCH 00/21] tracing: Inter-event (e.g. latency) support Tom Zanussi
2017-02-08 17:24 ` [RFC][PATCH 01/21] tracing: Add hist_field_name() accessor Tom Zanussi
2017-02-08 20:09 ` Steven Rostedt
2017-02-08 17:24 ` [RFC][PATCH 02/21] tracing: Reimplement log2 Tom Zanussi
2017-02-08 20:13 ` Steven Rostedt
2017-02-08 20:25 ` Tom Zanussi
2017-02-08 17:24 ` [RFC][PATCH 03/21] ring-buffer: Add TIME_EXTEND_ABS ring buffer type Tom Zanussi
2017-02-08 20:32 ` Steven Rostedt
2017-02-08 20:55 ` Tom Zanussi
2017-02-09 14:54 ` Steven Rostedt
2017-02-10 6:04 ` Namhyung Kim
2017-02-10 14:28 ` Steven Rostedt
2017-02-08 17:25 ` [RFC][PATCH 04/21] tracing: Give event triggers access to ring_buffer_event Tom Zanussi
2017-02-08 17:25 ` Tom Zanussi [this message]
2017-02-08 17:25 ` [RFC][PATCH 06/21] tracing: Increase tracing map KEYS_MAX size Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 07/21] tracing: Break out hist trigger assignment parsing Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 08/21] tracing: Make traceprobe parsing code reusable Tom Zanussi
2017-02-09 20:40 ` Steven Rostedt
2017-02-08 17:25 ` [RFC][PATCH 09/21] tracing: Add hist trigger timestamp support Tom Zanussi
2017-02-10 6:14 ` Namhyung Kim
2017-02-08 17:25 ` [RFC][PATCH 10/21] tracing: Add per-element variable support to tracing_map Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 11/21] tracing: Add variable support to hist triggers Tom Zanussi
2017-02-13 6:03 ` Namhyung Kim
2017-02-14 15:25 ` Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 12/21] tracing: Account for variables in named trigger compatibility Tom Zanussi
2017-02-13 6:04 ` Namhyung Kim
2017-02-14 15:26 ` Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 13/21] tracing: Add simple expression support to hist triggers Tom Zanussi
2017-02-14 2:37 ` Namhyung Kim
2017-02-14 15:29 ` Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 14/21] tracing: Add variable reference handling " Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 15/21] tracing: Add usecs modifier for hist trigger timestamps Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 16/21] tracing: Add support for dynamic tracepoints Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 17/21] tracing: Add hist trigger action hook Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 18/21] tracing: Add support for 'synthetic' events Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 19/21] tracing: Add 'onmatch' hist trigger action support Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 20/21] tracing: Add 'onmax' " Tom Zanussi
2017-02-08 17:25 ` [RFC][PATCH 21/21] tracing: Add inter-event hist trigger Documentation Tom Zanussi
2017-02-08 20:01 ` [RFC][PATCH 00/21] tracing: Inter-event (e.g. latency) support Steven Rostedt
2017-02-08 20:19 ` Tom Zanussi
2017-02-08 23:28 ` Tom Zanussi
2017-02-09 2:14 ` Steven Rostedt
2017-02-08 23:13 ` Masami Hiramatsu
2017-02-09 1:14 ` Tom Zanussi
2017-02-09 14:18 ` Masami Hiramatsu
2017-02-09 17:18 ` Tom Zanussi
2017-02-09 19:57 ` Steven Rostedt
2017-02-09 14:46 ` Frank Ch. Eigler
2017-02-09 18:43 ` Tom Zanussi
2017-02-10 4:16 ` Namhyung Kim
2017-02-10 9:34 ` Masami Hiramatsu
2017-02-10 18:58 ` Tom Zanussi
2017-02-13 1:04 ` Namhyung Kim
2017-02-14 9:37 ` Masami Hiramatsu
2017-02-14 15:27 ` Tom Zanussi
2017-02-10 18:43 ` Tom Zanussi
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