| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20251119031603.658997916@kernel.org>
Date: Tue, 18 Nov 2025 22:10:44 -0500
From: Steven Rostedt <rostedt@...nel.org>
To: linux-kernel@...r.kernel.org,
linux-trace-kernel@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Tom Zanussi <zanussi@...nel.org>
Subject: [PATCH 2/2] tracing: Merge struct event_trigger_ops into struct event_command
From: Steven Rostedt <rostedt@...dmis.org>
Now that there's pretty much a one to one mapping between the struct
event_trigger_ops and struct event_command, there's no reason to have two
different structures. Merge the function pointers of event_trigger_ops
into event_command.
There's one exception in trace_events_hist.c for the
event_hist_trigger_named_ops. This has special logic for the init and free
function pointers for "named histograms". In this case, allocate the
cmd_ops of the event_trigger_data and set it to the proper init and free
functions, which are used to initialize and free the event_trigger_data
respectively. Have the free function and the init function (on failure)
free the cmd_ops of the data element.
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
kernel/trace/trace.h | 126 +++++++++++-----------------
kernel/trace/trace_eprobe.c | 13 +--
kernel/trace/trace_events_hist.c | 93 ++++++++++----------
kernel/trace/trace_events_trigger.c | 121 +++++++++++---------------
4 files changed, 152 insertions(+), 201 deletions(-)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 036019ffc407..5863800b1ab3 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -1798,7 +1798,6 @@ struct event_trigger_data {
unsigned long count;
int ref;
int flags;
- const struct event_trigger_ops *ops;
struct event_command *cmd_ops;
struct event_filter __rcu *filter;
char *filter_str;
@@ -1889,73 +1888,6 @@ extern void event_trigger_unregister(struct event_command *cmd_ops,
extern void event_file_get(struct trace_event_file *file);
extern void event_file_put(struct trace_event_file *file);
-/**
- * struct event_trigger_ops - callbacks for trace event triggers
- *
- * The methods in this structure provide per-event trigger hooks for
- * various trigger operations.
- *
- * The @init and @free methods are used during trigger setup and
- * teardown, typically called from an event_command's @parse()
- * function implementation.
- *
- * The @print method is used to print the trigger spec.
- *
- * The @trigger method is the function that actually implements the
- * trigger and is called in the context of the triggering event
- * whenever that event occurs.
- *
- * All the methods below, except for @init() and @free(), must be
- * implemented.
- *
- * @trigger: The trigger 'probe' function called when the triggering
- * event occurs. The data passed into this callback is the data
- * that was supplied to the event_command @reg() function that
- * registered the trigger (see struct event_command) along with
- * the trace record, rec.
- *
- * @count_func: If defined and a numeric parameter is passed to the
- * trigger, then this function will be called before @trigger
- * is called. If this function returns false, then @trigger is not
- * executed.
- *
- * @init: An optional initialization function called for the trigger
- * when the trigger is registered (via the event_command reg()
- * function). This can be used to perform per-trigger
- * initialization such as incrementing a per-trigger reference
- * count, for instance. This is usually implemented by the
- * generic utility function @event_trigger_init() (see
- * trace_event_triggers.c).
- *
- * @free: An optional de-initialization function called for the
- * trigger when the trigger is unregistered (via the
- * event_command @reg() function). This can be used to perform
- * per-trigger de-initialization such as decrementing a
- * per-trigger reference count and freeing corresponding trigger
- * data, for instance. This is usually implemented by the
- * generic utility function @event_trigger_free() (see
- * trace_event_triggers.c).
- *
- * @print: The callback function invoked to have the trigger print
- * itself. This is usually implemented by a wrapper function
- * that calls the generic utility function @event_trigger_print()
- * (see trace_event_triggers.c).
- */
-struct event_trigger_ops {
- void (*trigger)(struct event_trigger_data *data,
- struct trace_buffer *buffer,
- void *rec,
- struct ring_buffer_event *rbe);
- bool (*count_func)(struct event_trigger_data *data,
- struct trace_buffer *buffer,
- void *rec,
- struct ring_buffer_event *rbe);
- int (*init)(struct event_trigger_data *data);
- void (*free)(struct event_trigger_data *data);
- int (*print)(struct seq_file *m,
- struct event_trigger_data *data);
-};
-
/**
* struct event_command - callbacks and data members for event commands
*
@@ -1976,9 +1908,6 @@ struct event_trigger_ops {
* @name: The unique name that identifies the event command. This is
* the name used when setting triggers via trigger files.
*
- * @trigger_ops: The event_trigger_ops implementation associated with
- * the command.
- *
* @trigger_type: A unique id that identifies the event command
* 'type'. This value has two purposes, the first to ensure that
* only one trigger of the same type can be set at a given time
@@ -2008,7 +1937,7 @@ struct event_trigger_ops {
*
* @reg: Adds the trigger to the list of triggers associated with the
* event, and enables the event trigger itself, after
- * initializing it (via the event_trigger_ops @init() function).
+ * initializing it (via the event_command @init() function).
* This is also where commands can use the @trigger_type value to
* make the decision as to whether or not multiple instances of
* the trigger should be allowed. This is usually implemented by
@@ -2017,7 +1946,7 @@ struct event_trigger_ops {
*
* @unreg: Removes the trigger from the list of triggers associated
* with the event, and disables the event trigger itself, after
- * initializing it (via the event_trigger_ops @free() function).
+ * initializing it (via the event_command @free() function).
* This is usually implemented by the generic utility function
* @unregister_trigger() (see trace_event_triggers.c).
*
@@ -2030,11 +1959,46 @@ struct event_trigger_ops {
* event command, filters set by the user for the command will be
* ignored. This is usually implemented by the generic utility
* function @set_trigger_filter() (see trace_event_triggers.c).
+ *
+ * All the methods below, except for @init() and @free(), must be
+ * implemented.
+ *
+ * @trigger: The trigger 'probe' function called when the triggering
+ * event occurs. The data passed into this callback is the data
+ * that was supplied to the event_command @reg() function that
+ * registered the trigger (see struct event_command) along with
+ * the trace record, rec.
+ *
+ * @count_func: If defined and a numeric parameter is passed to the
+ * trigger, then this function will be called before @trigger
+ * is called. If this function returns false, then @trigger is not
+ * executed.
+ *
+ * @init: An optional initialization function called for the trigger
+ * when the trigger is registered (via the event_command reg()
+ * function). This can be used to perform per-trigger
+ * initialization such as incrementing a per-trigger reference
+ * count, for instance. This is usually implemented by the
+ * generic utility function @event_trigger_init() (see
+ * trace_event_triggers.c).
+ *
+ * @free: An optional de-initialization function called for the
+ * trigger when the trigger is unregistered (via the
+ * event_command @reg() function). This can be used to perform
+ * per-trigger de-initialization such as decrementing a
+ * per-trigger reference count and freeing corresponding trigger
+ * data, for instance. This is usually implemented by the
+ * generic utility function @event_trigger_free() (see
+ * trace_event_triggers.c).
+ *
+ * @print: The callback function invoked to have the trigger print
+ * itself. This is usually implemented by a wrapper function
+ * that calls the generic utility function @event_trigger_print()
+ * (see trace_event_triggers.c).
*/
struct event_command {
struct list_head list;
char *name;
- const struct event_trigger_ops *trigger_ops;
enum event_trigger_type trigger_type;
int flags;
int (*parse)(struct event_command *cmd_ops,
@@ -2051,6 +2015,18 @@ struct event_command {
int (*set_filter)(char *filter_str,
struct event_trigger_data *data,
struct trace_event_file *file);
+ void (*trigger)(struct event_trigger_data *data,
+ struct trace_buffer *buffer,
+ void *rec,
+ struct ring_buffer_event *rbe);
+ bool (*count_func)(struct event_trigger_data *data,
+ struct trace_buffer *buffer,
+ void *rec,
+ struct ring_buffer_event *rbe);
+ int (*init)(struct event_trigger_data *data);
+ void (*free)(struct event_trigger_data *data);
+ int (*print)(struct seq_file *m,
+ struct event_trigger_data *data);
};
/**
@@ -2071,7 +2047,7 @@ struct event_command {
* either committed or discarded. At that point, if any commands
* have deferred their triggers, those commands are finally
* invoked following the close of the current event. In other
- * words, if the event_trigger_ops @func() probe implementation
+ * words, if the event_command @func() probe implementation
* itself logs to the trace buffer, this flag should be set,
* otherwise it can be left unspecified.
*
diff --git a/kernel/trace/trace_eprobe.c b/kernel/trace/trace_eprobe.c
index 14ae896dbe75..f3e0442c3b96 100644
--- a/kernel/trace/trace_eprobe.c
+++ b/kernel/trace/trace_eprobe.c
@@ -484,13 +484,6 @@ static void eprobe_trigger_func(struct event_trigger_data *data,
__eprobe_trace_func(edata, rec);
}
-static const struct event_trigger_ops eprobe_trigger_ops = {
- .trigger = eprobe_trigger_func,
- .print = eprobe_trigger_print,
- .init = eprobe_trigger_init,
- .free = eprobe_trigger_free,
-};
-
static int eprobe_trigger_cmd_parse(struct event_command *cmd_ops,
struct trace_event_file *file,
char *glob, char *cmd,
@@ -517,12 +510,15 @@ static struct event_command event_trigger_cmd = {
.name = "eprobe",
.trigger_type = ETT_EVENT_EPROBE,
.flags = EVENT_CMD_FL_NEEDS_REC,
- .trigger_ops = &eprobe_trigger_ops,
.parse = eprobe_trigger_cmd_parse,
.reg = eprobe_trigger_reg_func,
.unreg = eprobe_trigger_unreg_func,
.unreg_all = NULL,
.set_filter = NULL,
+ .trigger = eprobe_trigger_func,
+ .print = eprobe_trigger_print,
+ .init = eprobe_trigger_init,
+ .free = eprobe_trigger_free,
};
static struct event_trigger_data *
@@ -542,7 +538,6 @@ new_eprobe_trigger(struct trace_eprobe *ep, struct trace_event_file *file)
trigger->flags = EVENT_TRIGGER_FL_PROBE;
trigger->count = -1;
- trigger->ops = &eprobe_trigger_ops;
/*
* EVENT PROBE triggers are not registered as commands with
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index f9cc8d6a215b..1e03398b9e91 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -5694,7 +5694,7 @@ static void hist_trigger_show(struct seq_file *m,
seq_puts(m, "\n\n");
seq_puts(m, "# event histogram\n#\n# trigger info: ");
- data->ops->print(m, data);
+ data->cmd_ops->print(m, data);
seq_puts(m, "#\n\n");
hist_data = data->private_data;
@@ -6016,7 +6016,7 @@ static void hist_trigger_debug_show(struct seq_file *m,
seq_puts(m, "\n\n");
seq_puts(m, "# event histogram\n#\n# trigger info: ");
- data->ops->print(m, data);
+ data->cmd_ops->print(m, data);
seq_puts(m, "#\n\n");
hist_data = data->private_data;
@@ -6326,20 +6326,23 @@ static void event_hist_trigger_free(struct event_trigger_data *data)
free_hist_pad();
}
-static const struct event_trigger_ops event_hist_trigger_ops = {
- .trigger = event_hist_trigger,
- .print = event_hist_trigger_print,
- .init = event_hist_trigger_init,
- .free = event_hist_trigger_free,
-};
+static struct event_command trigger_hist_cmd;
static int event_hist_trigger_named_init(struct event_trigger_data *data)
{
+ int ret;
+
data->ref++;
save_named_trigger(data->named_data->name, data);
- return event_hist_trigger_init(data->named_data);
+ ret = event_hist_trigger_init(data->named_data);
+ if (ret < 0) {
+ kfree(data->cmd_ops);
+ data->cmd_ops = &trigger_hist_cmd;
+ }
+
+ return ret;
}
static void event_hist_trigger_named_free(struct event_trigger_data *data)
@@ -6351,18 +6354,14 @@ static void event_hist_trigger_named_free(struct event_trigger_data *data)
data->ref--;
if (!data->ref) {
+ struct event_command *cmd_ops = data->cmd_ops;
+
del_named_trigger(data);
trigger_data_free(data);
+ kfree(cmd_ops);
}
}
-static const struct event_trigger_ops event_hist_trigger_named_ops = {
- .trigger = event_hist_trigger,
- .print = event_hist_trigger_print,
- .init = event_hist_trigger_named_init,
- .free = event_hist_trigger_named_free,
-};
-
static void hist_clear(struct event_trigger_data *data)
{
struct hist_trigger_data *hist_data = data->private_data;
@@ -6556,13 +6555,24 @@ static int hist_register_trigger(char *glob,
data->paused = true;
if (named_data) {
+ struct event_command *cmd_ops;
+
data->private_data = named_data->private_data;
set_named_trigger_data(data, named_data);
- data->ops = &event_hist_trigger_named_ops;
+ /* Copy the command ops and update some of the functions */
+ cmd_ops = kmalloc(sizeof(*cmd_ops), GFP_KERNEL);
+ if (!cmd_ops) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ *cmd_ops = *data->cmd_ops;
+ cmd_ops->init = event_hist_trigger_named_init;
+ cmd_ops->free = event_hist_trigger_named_free;
+ data->cmd_ops = cmd_ops;
}
- if (data->ops->init) {
- ret = data->ops->init(data);
+ if (data->cmd_ops->init) {
+ ret = data->cmd_ops->init(data);
if (ret < 0)
goto out;
}
@@ -6676,8 +6686,8 @@ static void hist_unregister_trigger(char *glob,
}
}
- if (test && test->ops->free)
- test->ops->free(test);
+ if (test && test->cmd_ops->free)
+ test->cmd_ops->free(test);
if (hist_data->enable_timestamps) {
if (!hist_data->remove || test)
@@ -6729,8 +6739,8 @@ static void hist_unreg_all(struct trace_event_file *file)
update_cond_flag(file);
if (hist_data->enable_timestamps)
tracing_set_filter_buffering(file->tr, false);
- if (test->ops->free)
- test->ops->free(test);
+ if (test->cmd_ops->free)
+ test->cmd_ops->free(test);
}
}
}
@@ -6902,12 +6912,15 @@ static struct event_command trigger_hist_cmd = {
.name = "hist",
.trigger_type = ETT_EVENT_HIST,
.flags = EVENT_CMD_FL_NEEDS_REC,
- .trigger_ops = &event_hist_trigger_ops,
.parse = event_hist_trigger_parse,
.reg = hist_register_trigger,
.unreg = hist_unregister_trigger,
.unreg_all = hist_unreg_all,
.set_filter = set_trigger_filter,
+ .trigger = event_hist_trigger,
+ .print = event_hist_trigger_print,
+ .init = event_hist_trigger_init,
+ .free = event_hist_trigger_free,
};
__init int register_trigger_hist_cmd(void)
@@ -6939,22 +6952,6 @@ hist_enable_trigger(struct event_trigger_data *data,
}
}
-static const struct event_trigger_ops hist_enable_trigger_ops = {
- .trigger = hist_enable_trigger,
- .count_func = event_trigger_count,
- .print = event_enable_trigger_print,
- .init = event_trigger_init,
- .free = event_enable_trigger_free,
-};
-
-static const struct event_trigger_ops hist_disable_trigger_ops = {
- .trigger = hist_enable_trigger,
- .count_func = event_trigger_count,
- .print = event_enable_trigger_print,
- .init = event_trigger_init,
- .free = event_enable_trigger_free,
-};
-
static void hist_enable_unreg_all(struct trace_event_file *file)
{
struct event_trigger_data *test, *n;
@@ -6964,8 +6961,8 @@ static void hist_enable_unreg_all(struct trace_event_file *file)
list_del_rcu(&test->list);
update_cond_flag(file);
trace_event_trigger_enable_disable(file, 0);
- if (test->ops->free)
- test->ops->free(test);
+ if (test->cmd_ops->free)
+ test->cmd_ops->free(test);
}
}
}
@@ -6973,23 +6970,31 @@ static void hist_enable_unreg_all(struct trace_event_file *file)
static struct event_command trigger_hist_enable_cmd = {
.name = ENABLE_HIST_STR,
.trigger_type = ETT_HIST_ENABLE,
- .trigger_ops = &hist_enable_trigger_ops,
.parse = event_enable_trigger_parse,
.reg = event_enable_register_trigger,
.unreg = event_enable_unregister_trigger,
.unreg_all = hist_enable_unreg_all,
.set_filter = set_trigger_filter,
+ .trigger = hist_enable_trigger,
+ .count_func = event_trigger_count,
+ .print = event_enable_trigger_print,
+ .init = event_trigger_init,
+ .free = event_enable_trigger_free,
};
static struct event_command trigger_hist_disable_cmd = {
.name = DISABLE_HIST_STR,
.trigger_type = ETT_HIST_ENABLE,
- .trigger_ops = &hist_disable_trigger_ops,
.parse = event_enable_trigger_parse,
.reg = event_enable_register_trigger,
.unreg = event_enable_unregister_trigger,
.unreg_all = hist_enable_unreg_all,
.set_filter = set_trigger_filter,
+ .trigger = hist_enable_trigger,
+ .count_func = event_trigger_count,
+ .print = event_enable_trigger_print,
+ .init = event_trigger_init,
+ .free = event_enable_trigger_free,
};
static __init void unregister_trigger_hist_enable_disable_cmds(void)
diff --git a/kernel/trace/trace_events_trigger.c b/kernel/trace/trace_events_trigger.c
index 576bad18bcdb..7795af600466 100644
--- a/kernel/trace/trace_events_trigger.c
+++ b/kernel/trace/trace_events_trigger.c
@@ -32,14 +32,14 @@ static inline void data_ops_trigger(struct event_trigger_data *data,
struct trace_buffer *buffer, void *rec,
struct ring_buffer_event *event)
{
- const struct event_trigger_ops *ops = data->ops;
+ const struct event_command *cmd_ops = data->cmd_ops;
if (data->flags & EVENT_TRIGGER_FL_COUNT) {
- if (!ops->count_func(data, buffer, rec, event))
+ if (!cmd_ops->count_func(data, buffer, rec, event))
return;
}
- ops->trigger(data, buffer, rec, event);
+ cmd_ops->trigger(data, buffer, rec, event);
}
/**
@@ -205,7 +205,7 @@ static int trigger_show(struct seq_file *m, void *v)
}
data = list_entry(v, struct event_trigger_data, list);
- data->ops->print(m, data);
+ data->cmd_ops->print(m, data);
return 0;
}
@@ -422,7 +422,7 @@ bool event_trigger_count(struct event_trigger_data *data,
}
/**
- * event_trigger_print - Generic event_trigger_ops @print implementation
+ * event_trigger_print - Generic event_command @print implementation
* @name: The name of the event trigger
* @m: The seq_file being printed to
* @data: Trigger-specific data
@@ -457,7 +457,7 @@ event_trigger_print(const char *name, struct seq_file *m,
}
/**
- * event_trigger_init - Generic event_trigger_ops @init implementation
+ * event_trigger_init - Generic event_command @init implementation
* @data: Trigger-specific data
*
* Common implementation of event trigger initialization.
@@ -474,7 +474,7 @@ int event_trigger_init(struct event_trigger_data *data)
}
/**
- * event_trigger_free - Generic event_trigger_ops @free implementation
+ * event_trigger_free - Generic event_command @free implementation
* @data: Trigger-specific data
*
* Common implementation of event trigger de-initialization.
@@ -536,8 +536,8 @@ clear_event_triggers(struct trace_array *tr)
list_for_each_entry_safe(data, n, &file->triggers, list) {
trace_event_trigger_enable_disable(file, 0);
list_del_rcu(&data->list);
- if (data->ops->free)
- data->ops->free(data);
+ if (data->cmd_ops->free)
+ data->cmd_ops->free(data);
}
}
}
@@ -600,8 +600,8 @@ static int register_trigger(char *glob,
return -EEXIST;
}
- if (data->ops->init) {
- ret = data->ops->init(data);
+ if (data->cmd_ops->init) {
+ ret = data->cmd_ops->init(data);
if (ret < 0)
return ret;
}
@@ -639,8 +639,8 @@ static bool try_unregister_trigger(char *glob,
}
if (data) {
- if (data->ops->free)
- data->ops->free(data);
+ if (data->cmd_ops->free)
+ data->cmd_ops->free(data);
return true;
}
@@ -875,10 +875,9 @@ struct event_trigger_data *trigger_data_alloc(struct event_command *cmd_ops,
return NULL;
trigger_data->count = -1;
- trigger_data->ops = cmd_ops->trigger_ops;
trigger_data->cmd_ops = cmd_ops;
trigger_data->private_data = private_data;
- if (param && cmd_ops->trigger_ops->count_func)
+ if (param && cmd_ops->count_func)
trigger_data->flags |= EVENT_TRIGGER_FL_COUNT;
INIT_LIST_HEAD(&trigger_data->list);
@@ -1401,41 +1400,33 @@ traceoff_trigger_print(struct seq_file *m, struct event_trigger_data *data)
data->filter_str);
}
-static const struct event_trigger_ops traceon_trigger_ops = {
- .trigger = traceon_trigger,
- .count_func = traceon_count_func,
- .print = traceon_trigger_print,
- .init = event_trigger_init,
- .free = event_trigger_free,
-};
-
-static const struct event_trigger_ops traceoff_trigger_ops = {
- .trigger = traceoff_trigger,
- .count_func = traceoff_count_func,
- .print = traceoff_trigger_print,
- .init = event_trigger_init,
- .free = event_trigger_free,
-};
-
static struct event_command trigger_traceon_cmd = {
.name = "traceon",
.trigger_type = ETT_TRACE_ONOFF,
- .trigger_ops = &traceon_trigger_ops,
.parse = event_trigger_parse,
.reg = register_trigger,
.unreg = unregister_trigger,
.set_filter = set_trigger_filter,
+ .trigger = traceon_trigger,
+ .count_func = traceon_count_func,
+ .print = traceon_trigger_print,
+ .init = event_trigger_init,
+ .free = event_trigger_free,
};
static struct event_command trigger_traceoff_cmd = {
.name = "traceoff",
.trigger_type = ETT_TRACE_ONOFF,
.flags = EVENT_CMD_FL_POST_TRIGGER,
- .trigger_ops = &traceoff_trigger_ops,
.parse = event_trigger_parse,
.reg = register_trigger,
.unreg = unregister_trigger,
.set_filter = set_trigger_filter,
+ .trigger = traceoff_trigger,
+ .count_func = traceoff_count_func,
+ .print = traceoff_trigger_print,
+ .init = event_trigger_init,
+ .free = event_trigger_free,
};
#ifdef CONFIG_TRACER_SNAPSHOT
@@ -1483,22 +1474,18 @@ snapshot_trigger_print(struct seq_file *m, struct event_trigger_data *data)
data->filter_str);
}
-static const struct event_trigger_ops snapshot_trigger_ops = {
- .trigger = snapshot_trigger,
- .count_func = event_trigger_count,
- .print = snapshot_trigger_print,
- .init = event_trigger_init,
- .free = event_trigger_free,
-};
-
static struct event_command trigger_snapshot_cmd = {
.name = "snapshot",
.trigger_type = ETT_SNAPSHOT,
- .trigger_ops = &snapshot_trigger_ops,
.parse = event_trigger_parse,
.reg = register_snapshot_trigger,
.unreg = unregister_snapshot_trigger,
.set_filter = set_trigger_filter,
+ .trigger = snapshot_trigger,
+ .count_func = event_trigger_count,
+ .print = snapshot_trigger_print,
+ .init = event_trigger_init,
+ .free = event_trigger_free,
};
static __init int register_trigger_snapshot_cmd(void)
@@ -1552,23 +1539,19 @@ stacktrace_trigger_print(struct seq_file *m, struct event_trigger_data *data)
data->filter_str);
}
-static const struct event_trigger_ops stacktrace_trigger_ops = {
- .trigger = stacktrace_trigger,
- .count_func = event_trigger_count,
- .print = stacktrace_trigger_print,
- .init = event_trigger_init,
- .free = event_trigger_free,
-};
-
static struct event_command trigger_stacktrace_cmd = {
.name = "stacktrace",
.trigger_type = ETT_STACKTRACE,
- .trigger_ops = &stacktrace_trigger_ops,
.flags = EVENT_CMD_FL_POST_TRIGGER,
.parse = event_trigger_parse,
.reg = register_trigger,
.unreg = unregister_trigger,
.set_filter = set_trigger_filter,
+ .trigger = stacktrace_trigger,
+ .count_func = event_trigger_count,
+ .print = stacktrace_trigger_print,
+ .init = event_trigger_init,
+ .free = event_trigger_free,
};
static __init int register_trigger_stacktrace_cmd(void)
@@ -1665,22 +1648,6 @@ void event_enable_trigger_free(struct event_trigger_data *data)
}
}
-static const struct event_trigger_ops event_enable_trigger_ops = {
- .trigger = event_enable_trigger,
- .count_func = event_enable_count_func,
- .print = event_enable_trigger_print,
- .init = event_trigger_init,
- .free = event_enable_trigger_free,
-};
-
-static const struct event_trigger_ops event_disable_trigger_ops = {
- .trigger = event_enable_trigger,
- .count_func = event_enable_count_func,
- .print = event_enable_trigger_print,
- .init = event_trigger_init,
- .free = event_enable_trigger_free,
-};
-
int event_enable_trigger_parse(struct event_command *cmd_ops,
struct trace_event_file *file,
char *glob, char *cmd, char *param_and_filter)
@@ -1810,8 +1777,8 @@ int event_enable_register_trigger(char *glob,
}
}
- if (data->ops->init) {
- ret = data->ops->init(data);
+ if (data->cmd_ops->init) {
+ ret = data->cmd_ops->init(data);
if (ret < 0)
return ret;
}
@@ -1851,28 +1818,36 @@ void event_enable_unregister_trigger(char *glob,
}
}
- if (data && data->ops->free)
- data->ops->free(data);
+ if (data && data->cmd_ops->free)
+ data->cmd_ops->free(data);
}
static struct event_command trigger_enable_cmd = {
.name = ENABLE_EVENT_STR,
.trigger_type = ETT_EVENT_ENABLE,
- .trigger_ops = &event_enable_trigger_ops,
.parse = event_enable_trigger_parse,
.reg = event_enable_register_trigger,
.unreg = event_enable_unregister_trigger,
.set_filter = set_trigger_filter,
+ .trigger = event_enable_trigger,
+ .count_func = event_enable_count_func,
+ .print = event_enable_trigger_print,
+ .init = event_trigger_init,
+ .free = event_enable_trigger_free,
};
static struct event_command trigger_disable_cmd = {
.name = DISABLE_EVENT_STR,
.trigger_type = ETT_EVENT_ENABLE,
- .trigger_ops = &event_disable_trigger_ops,
.parse = event_enable_trigger_parse,
.reg = event_enable_register_trigger,
.unreg = event_enable_unregister_trigger,
.set_filter = set_trigger_filter,
+ .trigger = event_enable_trigger,
+ .count_func = event_enable_count_func,
+ .print = event_enable_trigger_print,
+ .init = event_trigger_init,
+ .free = event_enable_trigger_free,
};
static __init void unregister_trigger_enable_disable_cmds(void)
--
2.51.0
Powered by blists - more mailing lists