From: Tom Zanussi <zanussi@kernel.org>
To: rostedt@goodmis.org
Cc: tglx@linutronix.de, mhiramat@kernel.org, namhyung@kernel.org,
vedang.patel@intel.com, bigeasy@linutronix.de,
joel@joelfernandes.org, mathieu.desnoyers@efficios.com,
julia@ni.com, linux-kernel@vger.kernel.org,
linux-rt-users@vger.kernel.org
Subject: [PATCH v8 01/22] tracing: Refactor hist trigger action code
Date: Mon, 10 Dec 2018 18:01:15 -0600 [thread overview]
Message-ID: <d90ae04b4001f8161f577e35092ca978530af899.1544483272.git.tom.zanussi@linux.intel.com> (raw)
In-Reply-To: <cover.1544483272.git.tom.zanussi@linux.intel.com>
In-Reply-To: <cover.1544483272.git.tom.zanussi@linux.intel.com>
From: Tom Zanussi <tom.zanussi@linux.intel.com>
The hist trigger action code currently implements two essentially
hard-coded pairs of 'actions' - onmax(), which tracks a variable and
saves some event fields when a max is hit, and onmatch(), which is
hard-coded to generate a synthetic event.
These hardcoded pairs (track max/save fields and detect match/generate
synthetic event) should really be decoupled into separate components
that can then be arbitrarily combined. The first component of each
pair (track max/detect match) is called a 'handler' in the new code,
while the second component (save fields/generate synthetic event) is
called an 'action' in this scheme.
This change refactors the action code to reflect this split by adding
two handlers, HANDLER_ONMATCH and HANDLER_ONMAX, along with two
actions, ACTION_SAVE and ACTION_TRACE.
The new code combines them to produce the existing ONMATCH/TRACE and
ONMAX/SAVE functionality, but doesn't implement the other combinations
now possible. Future patches will expand these to further useful
cases, such as ONMAX/TRACE, as well as add additional handlers and
actions such as ONCHANGE and SNAPSHOT.
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
---
kernel/trace/trace_events_hist.c | 394 +++++++++++++++++++++++----------------
1 file changed, 231 insertions(+), 163 deletions(-)
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 82e72c48a5a9..76c3c4d0ed2d 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -288,9 +288,9 @@ struct hist_trigger_data {
struct field_var_hist *field_var_hists[SYNTH_FIELDS_MAX];
unsigned int n_field_var_hists;
- struct field_var *max_vars[SYNTH_FIELDS_MAX];
- unsigned int n_max_vars;
- unsigned int n_max_var_str;
+ struct field_var *save_vars[SYNTH_FIELDS_MAX];
+ unsigned int n_save_vars;
+ unsigned int n_save_var_str;
};
static int synth_event_create(int argc, const char **argv);
@@ -361,8 +361,22 @@ typedef void (*action_fn_t) (struct hist_trigger_data *hist_data,
struct ring_buffer_event *rbe,
struct action_data *data, u64 *var_ref_vals);
+enum handler_id {
+ HANDLER_ONMATCH = 1,
+ HANDLER_ONMAX,
+};
+
+enum action_id {
+ ACTION_SAVE = 1,
+ ACTION_TRACE,
+};
+
struct action_data {
+ enum handler_id handler;
+ enum action_id action;
+ char *action_name;
action_fn_t fn;
+
unsigned int n_params;
char *params[SYNTH_FIELDS_MAX];
@@ -371,13 +385,11 @@ struct action_data {
unsigned int var_ref_idx;
char *match_event;
char *match_event_system;
- char *synth_event_name;
struct synth_event *synth_event;
} onmatch;
struct {
char *var_str;
- char *fn_name;
unsigned int max_var_ref_idx;
struct hist_field *max_var;
struct hist_field *var;
@@ -1607,7 +1619,7 @@ find_match_var(struct hist_trigger_data *hist_data, char *var_name)
for (i = 0; i < hist_data->n_actions; i++) {
struct action_data *data = hist_data->actions[i];
- if (data->fn == action_trace) {
+ if (data->handler == HANDLER_ONMATCH) {
char *system = data->onmatch.match_event_system;
char *event_name = data->onmatch.match_event;
@@ -2039,7 +2051,7 @@ static int hist_trigger_elt_data_alloc(struct tracing_map_elt *elt)
}
}
- n_str = hist_data->n_field_var_str + hist_data->n_max_var_str;
+ n_str = hist_data->n_field_var_str + hist_data->n_save_var_str;
size = STR_VAR_LEN_MAX;
@@ -2981,7 +2993,7 @@ create_field_var_hist(struct hist_trigger_data *target_hist_data,
int ret;
if (target_hist_data->n_field_var_hists >= SYNTH_FIELDS_MAX) {
- hist_err_event("onmatch: Too many field variables defined: ",
+ hist_err_event("trace action: Too many field variables defined: ",
subsys_name, event_name, field_name);
return ERR_PTR(-EINVAL);
}
@@ -2989,7 +3001,7 @@ create_field_var_hist(struct hist_trigger_data *target_hist_data,
file = event_file(tr, subsys_name, event_name);
if (IS_ERR(file)) {
- hist_err_event("onmatch: Event file not found: ",
+ hist_err_event("trace action: Event file not found: ",
subsys_name, event_name, field_name);
ret = PTR_ERR(file);
return ERR_PTR(ret);
@@ -3003,7 +3015,7 @@ create_field_var_hist(struct hist_trigger_data *target_hist_data,
*/
hist_data = find_compatible_hist(target_hist_data, file);
if (!hist_data) {
- hist_err_event("onmatch: Matching event histogram not found: ",
+ hist_err_event("trace action: Matching event histogram not found: ",
subsys_name, event_name, field_name);
return ERR_PTR(-EINVAL);
}
@@ -3065,7 +3077,7 @@ create_field_var_hist(struct hist_trigger_data *target_hist_data,
kfree(cmd);
kfree(var_hist->cmd);
kfree(var_hist);
- hist_err_event("onmatch: Couldn't create histogram for field: ",
+ hist_err_event("trace action: Couldn't create histogram for field: ",
subsys_name, event_name, field_name);
return ERR_PTR(ret);
}
@@ -3078,7 +3090,7 @@ create_field_var_hist(struct hist_trigger_data *target_hist_data,
if (IS_ERR_OR_NULL(event_var)) {
kfree(var_hist->cmd);
kfree(var_hist);
- hist_err_event("onmatch: Couldn't find synthetic variable: ",
+ hist_err_event("trace action: Couldn't find synthetic variable: ",
subsys_name, event_name, field_name);
return ERR_PTR(-EINVAL);
}
@@ -3161,8 +3173,8 @@ static void update_max_vars(struct hist_trigger_data *hist_data,
struct ring_buffer_event *rbe,
void *rec)
{
- __update_field_vars(elt, rbe, rec, hist_data->max_vars,
- hist_data->n_max_vars, hist_data->n_field_var_str);
+ __update_field_vars(elt, rbe, rec, hist_data->save_vars,
+ hist_data->n_save_vars, hist_data->n_field_var_str);
}
static struct hist_field *create_var(struct hist_trigger_data *hist_data,
@@ -3306,9 +3318,9 @@ static void onmax_print(struct seq_file *m,
seq_printf(m, "\n\tmax: %10llu", tracing_map_read_var(elt, max_idx));
- for (i = 0; i < hist_data->n_max_vars; i++) {
- struct hist_field *save_val = hist_data->max_vars[i]->val;
- struct hist_field *save_var = hist_data->max_vars[i]->var;
+ for (i = 0; i < hist_data->n_save_vars; i++) {
+ struct hist_field *save_val = hist_data->save_vars[i]->val;
+ struct hist_field *save_var = hist_data->save_vars[i]->var;
u64 val;
save_var_idx = save_var->var.idx;
@@ -3352,7 +3364,7 @@ static void onmax_destroy(struct action_data *data)
destroy_hist_field(data->onmax.var, 0);
kfree(data->onmax.var_str);
- kfree(data->onmax.fn_name);
+ kfree(data->action_name);
for (i = 0; i < data->n_params; i++)
kfree(data->params[i]);
@@ -3360,16 +3372,17 @@ static void onmax_destroy(struct action_data *data)
kfree(data);
}
+static int action_create(struct hist_trigger_data *hist_data,
+ struct action_data *data);
+
static int onmax_create(struct hist_trigger_data *hist_data,
struct action_data *data)
{
+ struct hist_field *var_field, *ref_field, *max_var = NULL;
struct trace_event_file *file = hist_data->event_file;
- struct hist_field *var_field, *ref_field, *max_var;
unsigned int var_ref_idx = hist_data->n_var_refs;
- struct field_var *field_var;
- char *onmax_var_str, *param;
+ char *onmax_var_str;
unsigned long flags;
- unsigned int i;
int ret = 0;
onmax_var_str = data->onmax.var_str;
@@ -3399,8 +3412,8 @@ static int onmax_create(struct hist_trigger_data *hist_data,
ref_field->var_ref_idx = hist_data->n_var_refs++;
data->onmax.var = ref_field;
- data->fn = onmax_save;
data->onmax.max_var_ref_idx = var_ref_idx;
+
max_var = create_var(hist_data, file, "max", sizeof(u64), "u64");
if (IS_ERR(max_var)) {
hist_err("onmax: Couldn't create onmax variable: ", "max");
@@ -3409,27 +3422,7 @@ static int onmax_create(struct hist_trigger_data *hist_data,
}
data->onmax.max_var = max_var;
- for (i = 0; i < data->n_params; i++) {
- param = kstrdup(data->params[i], GFP_KERNEL);
- if (!param) {
- ret = -ENOMEM;
- goto out;
- }
-
- field_var = create_target_field_var(hist_data, NULL, NULL, param);
- if (IS_ERR(field_var)) {
- hist_err("onmax: Couldn't create field variable: ", param);
- ret = PTR_ERR(field_var);
- kfree(param);
- goto out;
- }
-
- hist_data->max_vars[hist_data->n_max_vars++] = field_var;
- if (field_var->val->flags & HIST_FIELD_FL_STRING)
- hist_data->n_max_var_str++;
-
- kfree(param);
- }
+ ret = action_create(hist_data, data);
out:
return ret;
}
@@ -3440,11 +3433,14 @@ static int parse_action_params(char *params, struct action_data *data)
int ret = 0;
while (params) {
- if (data->n_params >= SYNTH_FIELDS_MAX)
+ if (data->n_params >= SYNTH_FIELDS_MAX) {
+ hist_err("Too many action params", "");
goto out;
+ }
param = strsep(¶ms, ",");
if (!param) {
+ hist_err("No action param found", "");
ret = -EINVAL;
goto out;
}
@@ -3468,10 +3464,71 @@ static int parse_action_params(char *params, struct action_data *data)
return ret;
}
-static struct action_data *onmax_parse(char *str)
+static int action_parse(char *str, struct action_data *data,
+ enum handler_id handler)
+{
+ char *action_name;
+ int ret = 0;
+
+ strsep(&str, ".");
+ if (!str) {
+ hist_err("action parsing: No action found", "");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ action_name = strsep(&str, "(");
+ if (!action_name || !str) {
+ hist_err("action parsing: No action found", "");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (strncmp(action_name, "save", strlen("save")) == 0) {
+ char *params = strsep(&str, ")");
+
+ if (!params) {
+ hist_err("action parsing: No params found for %s", "save");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = parse_action_params(params, data);
+ if (ret)
+ goto out;
+
+ if (handler == HANDLER_ONMAX)
+ data->fn = onmax_save;
+
+ data->action = ACTION_SAVE;
+ } else {
+ char *params = strsep(&str, ")");
+
+ if (params) {
+ ret = parse_action_params(params, data);
+ if (ret)
+ goto out;
+ }
+
+ data->fn = action_trace;
+ data->action = ACTION_TRACE;
+ }
+
+ data->action_name = kstrdup(action_name, GFP_KERNEL);
+ if (!data->action_name) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ data->handler = handler;
+ out:
+ return ret;
+}
+
+static struct action_data *onmax_parse(char *str, enum handler_id handler)
{
- char *onmax_fn_name, *onmax_var_str;
struct action_data *data;
+ char *onmax_var_str;
int ret = -EINVAL;
data = kzalloc(sizeof(*data), GFP_KERNEL);
@@ -3490,33 +3547,9 @@ static struct action_data *onmax_parse(char *str)
goto free;
}
- strsep(&str, ".");
- if (!str)
- goto free;
-
- onmax_fn_name = strsep(&str, "(");
- if (!onmax_fn_name || !str)
- goto free;
-
- if (strncmp(onmax_fn_name, "save", strlen("save")) == 0) {
- char *params = strsep(&str, ")");
-
- if (!params) {
- ret = -EINVAL;
- goto free;
- }
-
- ret = parse_action_params(params, data);
- if (ret)
- goto free;
- } else
- goto free;
-
- data->onmax.fn_name = kstrdup(onmax_fn_name, GFP_KERNEL);
- if (!data->onmax.fn_name) {
- ret = -ENOMEM;
+ ret = action_parse(str, data, handler);
+ if (ret)
goto free;
- }
out:
return data;
free:
@@ -3533,7 +3566,7 @@ static void onmatch_destroy(struct action_data *data)
kfree(data->onmatch.match_event);
kfree(data->onmatch.match_event_system);
- kfree(data->onmatch.synth_event_name);
+ kfree(data->action_name);
for (i = 0; i < data->n_params; i++)
kfree(data->params[i]);
@@ -3608,8 +3641,9 @@ static int check_synth_field(struct synth_event *event,
}
static struct hist_field *
-onmatch_find_var(struct hist_trigger_data *hist_data, struct action_data *data,
- char *system, char *event, char *var)
+trace_action_find_var(struct hist_trigger_data *hist_data,
+ struct action_data *data,
+ char *system, char *event, char *var)
{
struct hist_field *hist_field;
@@ -3617,7 +3651,7 @@ onmatch_find_var(struct hist_trigger_data *hist_data, struct action_data *data,
hist_field = find_target_event_var(hist_data, system, event, var);
if (!hist_field) {
- if (!system) {
+ if (!system && data->handler == HANDLER_ONMATCH) {
system = data->onmatch.match_event_system;
event = data->onmatch.match_event;
}
@@ -3626,15 +3660,15 @@ onmatch_find_var(struct hist_trigger_data *hist_data, struct action_data *data,
}
if (!hist_field)
- hist_err_event("onmatch: Couldn't find onmatch param: $", system, event, var);
+ hist_err_event("trace action: Couldn't find param: $", system, event, var);
return hist_field;
}
static struct hist_field *
-onmatch_create_field_var(struct hist_trigger_data *hist_data,
- struct action_data *data, char *system,
- char *event, char *var)
+trace_action_create_field_var(struct hist_trigger_data *hist_data,
+ struct action_data *data, char *system,
+ char *event, char *var)
{
struct hist_field *hist_field = NULL;
struct field_var *field_var;
@@ -3657,7 +3691,7 @@ onmatch_create_field_var(struct hist_trigger_data *hist_data,
* looking for fields on the onmatch(system.event.xxx)
* event.
*/
- if (!system) {
+ if (!system && data->handler == HANDLER_ONMATCH) {
system = data->onmatch.match_event_system;
event = data->onmatch.match_event;
}
@@ -3681,9 +3715,8 @@ onmatch_create_field_var(struct hist_trigger_data *hist_data,
goto out;
}
-static int onmatch_create(struct hist_trigger_data *hist_data,
- struct trace_event_file *file,
- struct action_data *data)
+static int trace_action_create(struct hist_trigger_data *hist_data,
+ struct action_data *data)
{
char *event_name, *param, *system = NULL;
struct hist_field *hist_field, *var_ref;
@@ -3694,11 +3727,12 @@ static int onmatch_create(struct hist_trigger_data *hist_data,
lockdep_assert_held(&event_mutex);
- event = find_synth_event(data->onmatch.synth_event_name);
+ event = find_synth_event(data->action_name);
if (!event) {
- hist_err("onmatch: Couldn't find synthetic event: ", data->onmatch.synth_event_name);
+ hist_err("trace action: Couldn't find synthetic event: ", data->action_name);
return -EINVAL;
}
+
event->ref++;
var_ref_idx = hist_data->n_var_refs;
@@ -3726,13 +3760,15 @@ static int onmatch_create(struct hist_trigger_data *hist_data,
}
if (param[0] == '$')
- hist_field = onmatch_find_var(hist_data, data, system,
- event_name, param);
+ hist_field = trace_action_find_var(hist_data, data,
+ system, event_name,
+ param);
else
- hist_field = onmatch_create_field_var(hist_data, data,
- system,
- event_name,
- param);
+ hist_field = trace_action_create_field_var(hist_data,
+ data,
+ system,
+ event_name,
+ param);
if (!hist_field) {
kfree(p);
@@ -3754,7 +3790,7 @@ static int onmatch_create(struct hist_trigger_data *hist_data,
continue;
}
- hist_err_event("onmatch: Param type doesn't match synthetic event field type: ",
+ hist_err_event("trace action: Param type doesn't match synthetic event field type: ",
system, event_name, param);
kfree(p);
ret = -EINVAL;
@@ -3762,12 +3798,11 @@ static int onmatch_create(struct hist_trigger_data *hist_data,
}
if (field_pos != event->n_fields) {
- hist_err("onmatch: Param count doesn't match synthetic event field count: ", event->name);
+ hist_err("trace action: Param count doesn't match synthetic event field count: ", event->name);
ret = -EINVAL;
goto err;
}
- data->fn = action_trace;
data->onmatch.synth_event = event;
data->onmatch.var_ref_idx = var_ref_idx;
out:
@@ -3778,10 +3813,58 @@ static int onmatch_create(struct hist_trigger_data *hist_data,
goto out;
}
+static int action_create(struct hist_trigger_data *hist_data,
+ struct action_data *data)
+{
+ struct field_var *field_var;
+ unsigned int i;
+ char *param;
+ int ret = 0;
+
+ if (data->action == ACTION_TRACE)
+ return trace_action_create(hist_data, data);
+
+ if (data->action == ACTION_SAVE) {
+ if (hist_data->n_save_vars) {
+ ret = -EEXIST;
+ hist_err("save action: Can't have more than one save() action per hist", "");
+ goto out;
+ }
+
+ for (i = 0; i < data->n_params; i++) {
+ param = kstrdup(data->params[i], GFP_KERNEL);
+ if (!param) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ field_var = create_target_field_var(hist_data, NULL, NULL, param);
+ if (IS_ERR(field_var)) {
+ hist_err("save action: Couldn't create field variable: ", param);
+ ret = PTR_ERR(field_var);
+ kfree(param);
+ goto out;
+ }
+
+ hist_data->save_vars[hist_data->n_save_vars++] = field_var;
+ if (field_var->val->flags & HIST_FIELD_FL_STRING)
+ hist_data->n_save_var_str++;
+ kfree(param);
+ }
+ }
+ out:
+ return ret;
+}
+
+static int onmatch_create(struct hist_trigger_data *hist_data,
+ struct action_data *data)
+{
+ return action_create(hist_data, data);
+}
+
static struct action_data *onmatch_parse(struct trace_array *tr, char *str)
{
char *match_event, *match_event_system;
- char *synth_event_name, *params;
struct action_data *data;
int ret = -EINVAL;
@@ -3819,31 +3902,7 @@ static struct action_data *onmatch_parse(struct trace_array *tr, char *str)
goto free;
}
- strsep(&str, ".");
- if (!str) {
- hist_err("onmatch: Missing . after onmatch(): ", str);
- goto free;
- }
-
- synth_event_name = strsep(&str, "(");
- if (!synth_event_name || !str) {
- hist_err("onmatch: Missing opening paramlist paren: ", synth_event_name);
- goto free;
- }
-
- data->onmatch.synth_event_name = kstrdup(synth_event_name, GFP_KERNEL);
- if (!data->onmatch.synth_event_name) {
- ret = -ENOMEM;
- goto free;
- }
-
- params = strsep(&str, ")");
- if (!params || !str || (str && strlen(str))) {
- hist_err("onmatch: Missing closing paramlist paren: ", params);
- goto free;
- }
-
- ret = parse_action_params(params, data);
+ ret = action_parse(str, data, HANDLER_ONMATCH);
if (ret)
goto free;
out:
@@ -4283,9 +4342,9 @@ static void destroy_actions(struct hist_trigger_data *hist_data)
for (i = 0; i < hist_data->n_actions; i++) {
struct action_data *data = hist_data->actions[i];
- if (data->fn == action_trace)
+ if (data->handler == HANDLER_ONMATCH)
onmatch_destroy(data);
- else if (data->fn == onmax_save)
+ else if (data->handler == HANDLER_ONMAX)
onmax_destroy(data);
else
kfree(data);
@@ -4311,16 +4370,14 @@ static int parse_actions(struct hist_trigger_data *hist_data)
ret = PTR_ERR(data);
break;
}
- data->fn = action_trace;
} else if (strncmp(str, "onmax(", strlen("onmax(")) == 0) {
char *action_str = str + strlen("onmax(");
- data = onmax_parse(action_str);
+ data = onmax_parse(action_str, HANDLER_ONMAX);
if (IS_ERR(data)) {
ret = PTR_ERR(data);
break;
}
- data->fn = onmax_save;
} else {
ret = -EINVAL;
break;
@@ -4332,8 +4389,7 @@ static int parse_actions(struct hist_trigger_data *hist_data)
return ret;
}
-static int create_actions(struct hist_trigger_data *hist_data,
- struct trace_event_file *file)
+static int create_actions(struct hist_trigger_data *hist_data)
{
struct action_data *data;
unsigned int i;
@@ -4342,14 +4398,17 @@ static int create_actions(struct hist_trigger_data *hist_data,
for (i = 0; i < hist_data->attrs->n_actions; i++) {
data = hist_data->actions[i];
- if (data->fn == action_trace) {
- ret = onmatch_create(hist_data, file, data);
+ if (data->handler == HANDLER_ONMATCH) {
+ ret = onmatch_create(hist_data, data);
if (ret)
- return ret;
- } else if (data->fn == onmax_save) {
+ break;
+ } else if (data->handler == HANDLER_ONMAX) {
ret = onmax_create(hist_data, data);
if (ret)
- return ret;
+ break;
+ } else {
+ ret = -EINVAL;
+ break;
}
}
@@ -4365,26 +4424,42 @@ static void print_actions(struct seq_file *m,
for (i = 0; i < hist_data->n_actions; i++) {
struct action_data *data = hist_data->actions[i];
- if (data->fn == onmax_save)
+ if (data->handler == HANDLER_ONMAX)
onmax_print(m, hist_data, elt, data);
}
}
+static void print_action_spec(struct seq_file *m,
+ struct hist_trigger_data *hist_data,
+ struct action_data *data)
+{
+ unsigned int i;
+
+ if (data->action == ACTION_SAVE) {
+ for (i = 0; i < hist_data->n_save_vars; i++) {
+ seq_printf(m, "%s", hist_data->save_vars[i]->var->var.name);
+ if (i < hist_data->n_save_vars - 1)
+ seq_puts(m, ",");
+ }
+ } else if (data->action == ACTION_TRACE) {
+ for (i = 0; i < data->n_params; i++) {
+ if (i)
+ seq_puts(m, ",");
+ seq_printf(m, "%s", data->params[i]);
+ }
+ }
+}
+
static void print_onmax_spec(struct seq_file *m,
struct hist_trigger_data *hist_data,
struct action_data *data)
{
- unsigned int i;
-
seq_puts(m, ":onmax(");
seq_printf(m, "%s", data->onmax.var_str);
- seq_printf(m, ").%s(", data->onmax.fn_name);
+ seq_printf(m, ").%s(", data->action_name);
+
+ print_action_spec(m, hist_data, data);
- for (i = 0; i < hist_data->n_max_vars; i++) {
- seq_printf(m, "%s", hist_data->max_vars[i]->var->var.name);
- if (i < hist_data->n_max_vars - 1)
- seq_puts(m, ",");
- }
seq_puts(m, ")");
}
@@ -4392,18 +4467,12 @@ static void print_onmatch_spec(struct seq_file *m,
struct hist_trigger_data *hist_data,
struct action_data *data)
{
- unsigned int i;
-
seq_printf(m, ":onmatch(%s.%s).", data->onmatch.match_event_system,
data->onmatch.match_event);
- seq_printf(m, "%s(", data->onmatch.synth_event->name);
+ seq_printf(m, "%s(", data->action_name);
- for (i = 0; i < data->n_params; i++) {
- if (i)
- seq_puts(m, ",");
- seq_printf(m, "%s", data->params[i]);
- }
+ print_action_spec(m, hist_data, data);
seq_puts(m, ")");
}
@@ -4420,7 +4489,9 @@ static bool actions_match(struct hist_trigger_data *hist_data,
struct action_data *data = hist_data->actions[i];
struct action_data *data_test = hist_data_test->actions[i];
- if (data->fn != data_test->fn)
+ if (data->handler != data_test->handler)
+ return false;
+ if (data->action != data_test->action)
return false;
if (data->n_params != data_test->n_params)
@@ -4431,23 +4502,20 @@ static bool actions_match(struct hist_trigger_data *hist_data,
return false;
}
- if (data->fn == action_trace) {
- if (strcmp(data->onmatch.synth_event_name,
- data_test->onmatch.synth_event_name) != 0)
- return false;
+ if (strcmp(data->action_name, data_test->action_name) != 0)
+ return false;
+
+ if (data->handler == HANDLER_ONMATCH) {
if (strcmp(data->onmatch.match_event_system,
data_test->onmatch.match_event_system) != 0)
return false;
if (strcmp(data->onmatch.match_event,
data_test->onmatch.match_event) != 0)
return false;
- } else if (data->fn == onmax_save) {
+ } else if (data->handler == HANDLER_ONMAX) {
if (strcmp(data->onmax.var_str,
data_test->onmax.var_str) != 0)
return false;
- if (strcmp(data->onmax.fn_name,
- data_test->onmax.fn_name) != 0)
- return false;
}
}
@@ -4463,9 +4531,9 @@ static void print_actions_spec(struct seq_file *m,
for (i = 0; i < hist_data->n_actions; i++) {
struct action_data *data = hist_data->actions[i];
- if (data->fn == action_trace)
+ if (data->handler == HANDLER_ONMATCH)
print_onmatch_spec(m, hist_data, data);
- else if (data->fn == onmax_save)
+ else if (data->handler == HANDLER_ONMAX)
print_onmax_spec(m, hist_data, data);
}
}
@@ -5640,7 +5708,7 @@ static int event_hist_trigger_func(struct event_command *cmd_ops,
if (has_hist_vars(hist_data))
save_hist_vars(hist_data);
- ret = create_actions(hist_data, file);
+ ret = create_actions(hist_data);
if (ret)
goto out_unreg;
--
2.14.1
next prev parent reply other threads:[~2018-12-11 0:01 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-11 0:01 [PATCH v8 00/22] tracing: Hist trigger snapshot and onchange additions Tom Zanussi
2018-12-11 0:01 ` Tom Zanussi [this message]
2018-12-11 0:01 ` [PATCH v8 02/22] tracing: Make hist trigger Documentation better reflect actions/handlers Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 03/22] tracing: Add hist trigger handler.action documentation to README Tom Zanussi
2018-12-14 13:11 ` Masami Hiramatsu
2018-12-14 17:16 ` Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 04/22] tracing: Split up onmatch action data Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 05/22] tracing: Generalize hist trigger onmax and save action Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 06/22] tracing: Add conditional snapshot Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 07/22] tracing: Add hist trigger snapshot() action Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 08/22] tracing: Add hist trigger snapshot() action Documentation Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 09/22] tracing: Add hist trigger snapshot() action test case Tom Zanussi
2018-12-14 16:14 ` Masami Hiramatsu
2018-12-11 0:01 ` [PATCH v8 10/22] tracing: Add hist trigger onchange() handler Tom Zanussi
2018-12-14 16:09 ` Masami Hiramatsu
2018-12-11 0:01 ` [PATCH v8 11/22] tracing: Add hist trigger onchange() handler Documentation Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 12/22] tracing: Add hist trigger onchange() handler test case Tom Zanussi
2018-12-14 16:18 ` Masami Hiramatsu
2018-12-14 17:17 ` Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 13/22] tracing: Add alternative synthetic event trace action syntax Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 14/22] tracing: Add alternative synthetic event trace action test case Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 15/22] tracing: Add hist trigger action 'expected fail' " Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 16/22] tracing: Add SPDX license GPL-2.0 license identifier to inter-event testcases Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 17/22] tracing: Remove unnecessary hist trigger struct fields Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 18/22] tracing: Use var_refs[] for hist trigger reference checking Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 19/22] tracing: Remove open-coding of hist trigger var_ref management Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 20/22] tracing: Use hist trigger's var_ref array to destroy var_refs Tom Zanussi
2018-12-14 16:31 ` Masami Hiramatsu
2018-12-14 17:29 ` Tom Zanussi
2018-12-15 6:50 ` Namhyung Kim
2018-12-15 21:01 ` Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 21/22] tracing: Remove hist trigger synth_var_refs Tom Zanussi
2018-12-11 0:01 ` [PATCH v8 22/22] tracing: Add hist trigger comments for variable-related fields Tom Zanussi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=d90ae04b4001f8161f577e35092ca978530af899.1544483272.git.tom.zanussi@linux.intel.com \
--to=zanussi@kernel.org \
--cc=bigeasy@linutronix.de \
--cc=joel@joelfernandes.org \
--cc=julia@ni.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rt-users@vger.kernel.org \
--cc=mathieu.desnoyers@efficios.com \
--cc=mhiramat@kernel.org \
--cc=namhyung@kernel.org \
--cc=rostedt@goodmis.org \
--cc=tglx@linutronix.de \
--cc=vedang.patel@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.