[PATCH v6 3/6] tracing: Remove ops param from event_command reg()/unreg() callbacks
From: Tom Zanussi
Date: Sun Jan 09 2022 - 19:05:35 EST
The event_trigger_ops for an event_command are already accessible via
event_trigger_data.ops so remove the redundant ops from the callback.
Signed-off-by: Tom Zanussi <zanussi@xxxxxxxxxx>
---
kernel/trace/trace.h | 4 ----
kernel/trace/trace_eprobe.c | 12 ++++++------
kernel/trace/trace_events_hist.c | 10 +++++-----
kernel/trace/trace_events_trigger.c | 22 +++++++++-------------
4 files changed, 20 insertions(+), 28 deletions(-)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 1a73659222d4..7d981af10b8f 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -1582,11 +1582,9 @@ extern int event_enable_trigger_parse(struct event_command *cmd_ops,
struct trace_event_file *file,
char *glob, char *cmd, char *param);
extern int event_enable_register_trigger(char *glob,
- struct event_trigger_ops *ops,
struct event_trigger_data *data,
struct trace_event_file *file);
extern void event_enable_unregister_trigger(char *glob,
- struct event_trigger_ops *ops,
struct event_trigger_data *test,
struct trace_event_file *file);
extern void trigger_data_free(struct event_trigger_data *data);
@@ -1763,11 +1761,9 @@ struct event_command {
char *glob, char *cmd,
char *param_and_filter);
int (*reg)(char *glob,
- struct event_trigger_ops *ops,
struct event_trigger_data *data,
struct trace_event_file *file);
void (*unreg)(char *glob,
- struct event_trigger_ops *ops,
struct event_trigger_data *data,
struct trace_event_file *file);
void (*unreg_all)(struct trace_event_file *file);
diff --git a/kernel/trace/trace_eprobe.c b/kernel/trace/trace_eprobe.c
index 6d363fd8a1e4..191db32dec46 100644
--- a/kernel/trace/trace_eprobe.c
+++ b/kernel/trace/trace_eprobe.c
@@ -556,16 +556,16 @@ static int eprobe_trigger_cmd_parse(struct event_command *cmd_ops,
return -1;
}
-static int eprobe_trigger_reg_func(char *glob, struct event_trigger_ops *ops,
- struct event_trigger_data *data,
- struct trace_event_file *file)
+static int eprobe_trigger_reg_func(char *glob,
+ struct event_trigger_data *data,
+ struct trace_event_file *file)
{
return -1;
}
-static void eprobe_trigger_unreg_func(char *glob, struct event_trigger_ops *ops,
- struct event_trigger_data *data,
- struct trace_event_file *file)
+static void eprobe_trigger_unreg_func(char *glob,
+ struct event_trigger_data *data,
+ struct trace_event_file *file)
{
}
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 229ce5c2dfd3..5e6a988a8a51 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -5910,7 +5910,7 @@ static bool hist_trigger_match(struct event_trigger_data *data,
return true;
}
-static int hist_register_trigger(char *glob, struct event_trigger_ops *ops,
+static int hist_register_trigger(char *glob,
struct event_trigger_data *data,
struct trace_event_file *file)
{
@@ -6062,7 +6062,7 @@ static bool hist_trigger_check_refs(struct event_trigger_data *data,
return false;
}
-static void hist_unregister_trigger(char *glob, struct event_trigger_ops *ops,
+static void hist_unregister_trigger(char *glob,
struct event_trigger_data *data,
struct trace_event_file *file)
{
@@ -6262,7 +6262,7 @@ static int event_hist_trigger_parse(struct event_command *cmd_ops,
goto out_free;
}
- cmd_ops->unreg(glob+1, trigger_ops, trigger_data, file);
+ cmd_ops->unreg(glob+1, trigger_data, file);
se_name = trace_event_name(file->event_call);
se = find_synth_event(se_name);
if (se)
@@ -6271,7 +6271,7 @@ static int event_hist_trigger_parse(struct event_command *cmd_ops,
goto out_free;
}
- ret = cmd_ops->reg(glob, trigger_ops, trigger_data, file);
+ ret = cmd_ops->reg(glob, trigger_data, file);
/*
* The above returns on success the # of triggers registered,
* but if it didn't register any it returns zero. Consider no
@@ -6314,7 +6314,7 @@ static int event_hist_trigger_parse(struct event_command *cmd_ops,
return ret;
out_unreg:
- cmd_ops->unreg(glob+1, trigger_ops, trigger_data, file);
+ cmd_ops->unreg(glob+1, trigger_data, file);
out_free:
if (cmd_ops->set_filter)
cmd_ops->set_filter(NULL, trigger_data, NULL);
diff --git a/kernel/trace/trace_events_trigger.c b/kernel/trace/trace_events_trigger.c
index 24aceeb50dc0..d40b857db572 100644
--- a/kernel/trace/trace_events_trigger.c
+++ b/kernel/trace/trace_events_trigger.c
@@ -540,7 +540,6 @@ void update_cond_flag(struct trace_event_file *file)
/**
* register_trigger - Generic event_command @reg implementation
* @glob: The raw string used to register the trigger
- * @ops: The trigger ops associated with the trigger
* @data: Trigger-specific data to associate with the trigger
* @file: The trace_event_file associated with the event
*
@@ -551,7 +550,7 @@ void update_cond_flag(struct trace_event_file *file)
*
* Return: 0 on success, errno otherwise
*/
-static int register_trigger(char *glob, struct event_trigger_ops *ops,
+static int register_trigger(char *glob,
struct event_trigger_data *data,
struct trace_event_file *file)
{
@@ -589,7 +588,6 @@ static int register_trigger(char *glob, struct event_trigger_ops *ops,
/**
* unregister_trigger - Generic event_command @unreg implementation
* @glob: The raw string used to register the trigger
- * @ops: The trigger ops associated with the trigger
* @test: Trigger-specific data used to find the trigger to remove
* @file: The trace_event_file associated with the event
*
@@ -598,7 +596,7 @@ static int register_trigger(char *glob, struct event_trigger_ops *ops,
* Usually used directly as the @unreg method in event command
* implementations.
*/
-static void unregister_trigger(char *glob, struct event_trigger_ops *ops,
+static void unregister_trigger(char *glob,
struct event_trigger_data *test,
struct trace_event_file *file)
{
@@ -673,7 +671,7 @@ event_trigger_parse(struct event_command *cmd_ops,
INIT_LIST_HEAD(&trigger_data->named_list);
if (glob[0] == '!') {
- cmd_ops->unreg(glob+1, trigger_ops, trigger_data, file);
+ cmd_ops->unreg(glob+1, trigger_data, file);
kfree(trigger_data);
ret = 0;
goto out;
@@ -708,14 +706,14 @@ event_trigger_parse(struct event_command *cmd_ops,
out_reg:
/* Up the trigger_data count to make sure reg doesn't free it on failure */
event_trigger_init(trigger_ops, trigger_data);
- ret = cmd_ops->reg(glob, trigger_ops, trigger_data, file);
+ ret = cmd_ops->reg(glob, trigger_data, file);
/*
* The above returns on success the # of functions enabled,
* but if it didn't find any functions it returns zero.
* Consider no functions a failure too.
*/
if (!ret) {
- cmd_ops->unreg(glob, trigger_ops, trigger_data, file);
+ cmd_ops->unreg(glob, trigger_data, file);
ret = -ENOENT;
} else if (ret > 0)
ret = 0;
@@ -1116,14 +1114,14 @@ snapshot_count_trigger(struct event_trigger_data *data,
}
static int
-register_snapshot_trigger(char *glob, struct event_trigger_ops *ops,
+register_snapshot_trigger(char *glob,
struct event_trigger_data *data,
struct trace_event_file *file)
{
if (tracing_alloc_snapshot_instance(file->tr) != 0)
return 0;
- return register_trigger(glob, ops, data, file);
+ return register_trigger(glob, data, file);
}
static int
@@ -1455,7 +1453,7 @@ int event_enable_trigger_parse(struct event_command *cmd_ops,
trigger_data->private_data = enable_data;
if (glob[0] == '!') {
- cmd_ops->unreg(glob+1, trigger_ops, trigger_data, file);
+ cmd_ops->unreg(glob+1, trigger_data, file);
kfree(trigger_data);
kfree(enable_data);
ret = 0;
@@ -1502,7 +1500,7 @@ int event_enable_trigger_parse(struct event_command *cmd_ops,
ret = trace_event_enable_disable(event_enable_file, 1, 1);
if (ret < 0)
goto out_put;
- ret = cmd_ops->reg(glob, trigger_ops, trigger_data, file);
+ ret = cmd_ops->reg(glob, trigger_data, file);
/*
* The above returns on success the # of functions enabled,
* but if it didn't find any functions it returns zero.
@@ -1532,7 +1530,6 @@ int event_enable_trigger_parse(struct event_command *cmd_ops,
}
int event_enable_register_trigger(char *glob,
- struct event_trigger_ops *ops,
struct event_trigger_data *data,
struct trace_event_file *file)
{
@@ -1574,7 +1571,6 @@ int event_enable_register_trigger(char *glob,
}
void event_enable_unregister_trigger(char *glob,
- struct event_trigger_ops *ops,
struct event_trigger_data *test,
struct trace_event_file *file)
{
--
2.17.1