[PATCH] tools: lib: traceevent: event-parse.c: Remove some unused functions

[PATCH] tools: lib: traceevent: event-parse.c: Remove some unused functions

[Rickard Strandqvist]

Removes some functions that are not used anywhere:
pevent_get_any_field_val() pevent_get_common_field_val() pevent_event_fields() pevent_event_common_fields() pevent_list_events() pevent_print_event() pevent_data_event_from_type() pevent_register_trace_clock() pevent_pid_is_registered()

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
---
 tools/lib/traceevent/event-parse.c |  240 ------------------------------------
 tools/lib/traceevent/event-parse.h |   16 ---
 2 files changed, 256 deletions(-)

diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index cf3a44b..4287771 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -206,35 +206,6 @@ static const char *find_cmdline(struct pevent *pevent, int pid)
 	return "<...>";
 }
 
-/**
- * pevent_pid_is_registered - return if a pid has a cmdline registered
- * @pevent: handle for the pevent
- * @pid: The pid to check if it has a cmdline registered with.
- *
- * Returns 1 if the pid has a cmdline mapped to it
- * 0 otherwise.
- */
-int pevent_pid_is_registered(struct pevent *pevent, int pid)
-{
-	const struct cmdline *comm;
-	struct cmdline key;
-
-	if (!pid)
-		return 1;
-
-	if (!pevent->cmdlines && cmdline_init(pevent))
-		return 0;
-
-	key.pid = pid;
-
-	comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count,
-		       sizeof(*pevent->cmdlines), cmdline_cmp);
-
-	if (comm)
-		return 1;
-	return 0;
-}
-
 /*
  * If the command lines have been converted to an array, then
  * we must add this pid. This is much slower than when cmdlines
@@ -317,11 +288,6 @@ int pevent_register_comm(struct pevent *pevent, const char *comm, int pid)
 	return 0;
 }
 
-void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock)
-{
-	pevent->trace_clock = trace_clock;
-}
-
 struct func_map {
 	unsigned long long		addr;
 	char				*func;
@@ -4572,18 +4538,6 @@ int pevent_data_type(struct pevent *pevent, struct pevent_record *rec)
 }
 
 /**
- * pevent_data_event_from_type - find the event by a given type
- * @pevent: a handle to the pevent
- * @type: the type of the event.
- *
- * This returns the event form a given @type;
- */
-struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type)
-{
-	return pevent_find_event(pevent, type);
-}
-
-/**
  * pevent_data_pid - parse the PID from raw data
  * @pevent: a handle to the pevent
  * @rec: the record to parse
@@ -4653,75 +4607,6 @@ static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock)
 	return false;
 }
 
-void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
-			struct pevent_record *record, bool use_trace_clock)
-{
-	static const char *spaces = "                    "; /* 20 spaces */
-	struct event_format *event;
-	unsigned long secs;
-	unsigned long usecs;
-	unsigned long nsecs;
-	const char *comm;
-	void *data = record->data;
-	int type;
-	int pid;
-	int len;
-	int p;
-	bool use_usec_format;
-
-	use_usec_format = is_timestamp_in_us(pevent->trace_clock,
-							use_trace_clock);
-	if (use_usec_format) {
-		secs = record->ts / NSECS_PER_SEC;
-		nsecs = record->ts - secs * NSECS_PER_SEC;
-	}
-
-	if (record->size < 0) {
-		do_warning("ug! negative record size %d", record->size);
-		return;
-	}
-
-	type = trace_parse_common_type(pevent, data);
-
-	event = pevent_find_event(pevent, type);
-	if (!event) {
-		do_warning("ug! no event found for type %d", type);
-		return;
-	}
-
-	pid = parse_common_pid(pevent, data);
-	comm = find_cmdline(pevent, pid);
-
-	if (pevent->latency_format) {
-		trace_seq_printf(s, "%8.8s-%-5d %3d",
-		       comm, pid, record->cpu);
-		pevent_data_lat_fmt(pevent, s, record);
-	} else
-		trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu);
-
-	if (use_usec_format) {
-		if (pevent->flags & PEVENT_NSEC_OUTPUT) {
-			usecs = nsecs;
-			p = 9;
-		} else {
-			usecs = (nsecs + 500) / NSECS_PER_USEC;
-			p = 6;
-		}
-
-		trace_seq_printf(s, " %5lu.%0*lu: %s: ",
-					secs, p, usecs, event->name);
-	} else
-		trace_seq_printf(s, " %12llu: %s: ",
-					record->ts, event->name);
-
-	/* Space out the event names evenly. */
-	len = strlen(event->name);
-	if (len < 20)
-		trace_seq_printf(s, "%.*s", 20 - len, spaces);
-
-	pevent_event_info(s, event, record);
-}
-
 static int events_id_cmp(const void *a, const void *b)
 {
 	struct event_format * const * ea = a;
@@ -4770,53 +4655,6 @@ static int events_system_cmp(const void *a, const void *b)
 	return events_id_cmp(a, b);
 }
 
-struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type)
-{
-	struct event_format **events;
-	int (*sort)(const void *a, const void *b);
-
-	events = pevent->sort_events;
-
-	if (events && pevent->last_type == sort_type)
-		return events;
-
-	if (!events) {
-		events = malloc(sizeof(*events) * (pevent->nr_events + 1));
-		if (!events)
-			return NULL;
-
-		memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events);
-		events[pevent->nr_events] = NULL;
-
-		pevent->sort_events = events;
-
-		/* the internal events are sorted by id */
-		if (sort_type == EVENT_SORT_ID) {
-			pevent->last_type = sort_type;
-			return events;
-		}
-	}
-
-	switch (sort_type) {
-	case EVENT_SORT_ID:
-		sort = events_id_cmp;
-		break;
-	case EVENT_SORT_NAME:
-		sort = events_name_cmp;
-		break;
-	case EVENT_SORT_SYSTEM:
-		sort = events_system_cmp;
-		break;
-	default:
-		return events;
-	}
-
-	qsort(events, pevent->nr_events, sizeof(*events), sort);
-	pevent->last_type = sort_type;
-
-	return events;
-}
-
 static struct format_field **
 get_event_fields(const char *type, const char *name,
 		 int count, struct format_field *list)
@@ -4848,34 +4686,6 @@ get_event_fields(const char *type, const char *name,
 	return fields;
 }
 
-/**
- * pevent_event_common_fields - return a list of common fields for an event
- * @event: the event to return the common fields of.
- *
- * Returns an allocated array of fields. The last item in the array is NULL.
- * The array must be freed with free().
- */
-struct format_field **pevent_event_common_fields(struct event_format *event)
-{
-	return get_event_fields("common", event->name,
-				event->format.nr_common,
-				event->format.common_fields);
-}
-
-/**
- * pevent_event_fields - return a list of event specific fields for an event
- * @event: the event to return the fields of.
- *
- * Returns an allocated array of fields. The last item in the array is NULL.
- * The array must be freed with free().
- */
-struct format_field **pevent_event_fields(struct event_format *event)
-{
-	return get_event_fields("event", event->name,
-				event->format.nr_fields,
-				event->format.fields);
-}
-
 static void print_fields(struct trace_seq *s, struct print_flag_sym *field)
 {
 	trace_seq_printf(s, "{ %s, %s }", field->value, field->str);
@@ -5467,56 +5277,6 @@ int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
 }
 
 /**
- * pevent_get_common_field_val - find a common field and return its value
- * @s: The seq to print to on error
- * @event: the event that the field is for
- * @name: The name of the field
- * @record: The record with the field name.
- * @val: place to store the value of the field.
- * @err: print default error if failed.
- *
- * Returns 0 on success -1 on field not found.
- */
-int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
-				const char *name, struct pevent_record *record,
-				unsigned long long *val, int err)
-{
-	struct format_field *field;
-
-	if (!event)
-		return -1;
-
-	field = pevent_find_common_field(event, name);
-
-	return get_field_val(s, field, name, record, val, err);
-}
-
-/**
- * pevent_get_any_field_val - find a any field and return its value
- * @s: The seq to print to on error
- * @event: the event that the field is for
- * @name: The name of the field
- * @record: The record with the field name.
- * @val: place to store the value of the field.
- * @err: print default error if failed.
- *
- * Returns 0 on success -1 on field not found.
- */
-int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
-			     const char *name, struct pevent_record *record,
-			     unsigned long long *val, int err)
-{
-	struct format_field *field;
-
-	if (!event)
-		return -1;
-
-	field = pevent_find_any_field(event, name);
-
-	return get_field_val(s, field, name, record, val, err);
-}
-
-/**
  * pevent_print_num_field - print a field and a format
  * @s: The seq to print to
  * @fmt: The printf format to print the field with.
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 7a3873f..8e50f9d 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -597,15 +597,10 @@ enum trace_flag_type {
 };
 
 int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
-void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock);
 int pevent_register_function(struct pevent *pevent, char *name,
 			     unsigned long long addr, char *mod);
 int pevent_register_print_string(struct pevent *pevent, const char *fmt,
 				 unsigned long long addr);
-int pevent_pid_is_registered(struct pevent *pevent, int pid);
-
-void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
-			struct pevent_record *record, bool use_trace_clock);
 
 int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
 			     int long_size);
@@ -625,12 +620,6 @@ void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
 int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
 			 const char *name, struct pevent_record *record,
 			 unsigned long long *val, int err);
-int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
-				const char *name, struct pevent_record *record,
-				unsigned long long *val, int err);
-int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
-			     const char *name, struct pevent_record *record,
-			     unsigned long long *val, int err);
 
 int pevent_print_num_field(struct trace_seq *s, const char *fmt,
 			   struct event_format *event, const char *name,
@@ -672,7 +661,6 @@ pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *na
 void pevent_data_lat_fmt(struct pevent *pevent,
 			 struct trace_seq *s, struct pevent_record *record);
 int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
-struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
 int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
 const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
 void pevent_event_info(struct trace_seq *s, struct event_format *event,
@@ -680,10 +668,6 @@ void pevent_event_info(struct trace_seq *s, struct event_format *event,
 int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
 		    char *buf, size_t buflen);
 
-struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
-struct format_field **pevent_event_common_fields(struct event_format *event);
-struct format_field **pevent_event_fields(struct event_format *event);
-
 static inline int pevent_get_cpus(struct pevent *pevent)
 {
 	return pevent->cpus;
-- 
1.7.10.4

Re: [PATCH] tools: lib: traceevent: event-parse.c: Remove some unused functions

[Arnaldo Carvalho de Melo]

Em Sat, Dec 20, 2014 at 01:45:41PM +0100, Rickard Strandqvist escreveu:
> Removes some functions that are not used anywhere:
> pevent_get_any_field_val() pevent_get_common_field_val() pevent_event_fields() pevent_event_common_fields() pevent_list_events() pevent_print_event() pevent_data_event_from_type() pevent_register_trace_clock() pevent_pid_is_registered()
> 
> This was partially found by using a static code analysis program called cppcheck.

Steven, Namhyung, Jiri:

Are you ok with me applying this patch? I'm all for it, dead code better
be removed, but I don't know what are your plans wrt synchronization
with the trace-cmd repo.

- Arnaldo
 
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
> ---
>  tools/lib/traceevent/event-parse.c |  240 ------------------------------------
>  tools/lib/traceevent/event-parse.h |   16 ---
>  2 files changed, 256 deletions(-)
> 
> diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
> index cf3a44b..4287771 100644
> --- a/tools/lib/traceevent/event-parse.c
> +++ b/tools/lib/traceevent/event-parse.c
> @@ -206,35 +206,6 @@ static const char *find_cmdline(struct pevent *pevent, int pid)
>  	return "<...>";
>  }
>  
> -/**
> - * pevent_pid_is_registered - return if a pid has a cmdline registered
> - * @pevent: handle for the pevent
> - * @pid: The pid to check if it has a cmdline registered with.
> - *
> - * Returns 1 if the pid has a cmdline mapped to it
> - * 0 otherwise.
> - */
> -int pevent_pid_is_registered(struct pevent *pevent, int pid)
> -{
> -	const struct cmdline *comm;
> -	struct cmdline key;
> -
> -	if (!pid)
> -		return 1;
> -
> -	if (!pevent->cmdlines && cmdline_init(pevent))
> -		return 0;
> -
> -	key.pid = pid;
> -
> -	comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count,
> -		       sizeof(*pevent->cmdlines), cmdline_cmp);
> -
> -	if (comm)
> -		return 1;
> -	return 0;
> -}
> -
>  /*
>   * If the command lines have been converted to an array, then
>   * we must add this pid. This is much slower than when cmdlines
> @@ -317,11 +288,6 @@ int pevent_register_comm(struct pevent *pevent, const char *comm, int pid)
>  	return 0;
>  }
>  
> -void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock)
> -{
> -	pevent->trace_clock = trace_clock;
> -}
> -
>  struct func_map {
>  	unsigned long long		addr;
>  	char				*func;
> @@ -4572,18 +4538,6 @@ int pevent_data_type(struct pevent *pevent, struct pevent_record *rec)
>  }
>  
>  /**
> - * pevent_data_event_from_type - find the event by a given type
> - * @pevent: a handle to the pevent
> - * @type: the type of the event.
> - *
> - * This returns the event form a given @type;
> - */
> -struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type)
> -{
> -	return pevent_find_event(pevent, type);
> -}
> -
> -/**
>   * pevent_data_pid - parse the PID from raw data
>   * @pevent: a handle to the pevent
>   * @rec: the record to parse
> @@ -4653,75 +4607,6 @@ static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock)
>  	return false;
>  }
>  
> -void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
> -			struct pevent_record *record, bool use_trace_clock)
> -{
> -	static const char *spaces = "                    "; /* 20 spaces */
> -	struct event_format *event;
> -	unsigned long secs;
> -	unsigned long usecs;
> -	unsigned long nsecs;
> -	const char *comm;
> -	void *data = record->data;
> -	int type;
> -	int pid;
> -	int len;
> -	int p;
> -	bool use_usec_format;
> -
> -	use_usec_format = is_timestamp_in_us(pevent->trace_clock,
> -							use_trace_clock);
> -	if (use_usec_format) {
> -		secs = record->ts / NSECS_PER_SEC;
> -		nsecs = record->ts - secs * NSECS_PER_SEC;
> -	}
> -
> -	if (record->size < 0) {
> -		do_warning("ug! negative record size %d", record->size);
> -		return;
> -	}
> -
> -	type = trace_parse_common_type(pevent, data);
> -
> -	event = pevent_find_event(pevent, type);
> -	if (!event) {
> -		do_warning("ug! no event found for type %d", type);
> -		return;
> -	}
> -
> -	pid = parse_common_pid(pevent, data);
> -	comm = find_cmdline(pevent, pid);
> -
> -	if (pevent->latency_format) {
> -		trace_seq_printf(s, "%8.8s-%-5d %3d",
> -		       comm, pid, record->cpu);
> -		pevent_data_lat_fmt(pevent, s, record);
> -	} else
> -		trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu);
> -
> -	if (use_usec_format) {
> -		if (pevent->flags & PEVENT_NSEC_OUTPUT) {
> -			usecs = nsecs;
> -			p = 9;
> -		} else {
> -			usecs = (nsecs + 500) / NSECS_PER_USEC;
> -			p = 6;
> -		}
> -
> -		trace_seq_printf(s, " %5lu.%0*lu: %s: ",
> -					secs, p, usecs, event->name);
> -	} else
> -		trace_seq_printf(s, " %12llu: %s: ",
> -					record->ts, event->name);
> -
> -	/* Space out the event names evenly. */
> -	len = strlen(event->name);
> -	if (len < 20)
> -		trace_seq_printf(s, "%.*s", 20 - len, spaces);
> -
> -	pevent_event_info(s, event, record);
> -}
> -
>  static int events_id_cmp(const void *a, const void *b)
>  {
>  	struct event_format * const * ea = a;
> @@ -4770,53 +4655,6 @@ static int events_system_cmp(const void *a, const void *b)
>  	return events_id_cmp(a, b);
>  }
>  
> -struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type)
> -{
> -	struct event_format **events;
> -	int (*sort)(const void *a, const void *b);
> -
> -	events = pevent->sort_events;
> -
> -	if (events && pevent->last_type == sort_type)
> -		return events;
> -
> -	if (!events) {
> -		events = malloc(sizeof(*events) * (pevent->nr_events + 1));
> -		if (!events)
> -			return NULL;
> -
> -		memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events);
> -		events[pevent->nr_events] = NULL;
> -
> -		pevent->sort_events = events;
> -
> -		/* the internal events are sorted by id */
> -		if (sort_type == EVENT_SORT_ID) {
> -			pevent->last_type = sort_type;
> -			return events;
> -		}
> -	}
> -
> -	switch (sort_type) {
> -	case EVENT_SORT_ID:
> -		sort = events_id_cmp;
> -		break;
> -	case EVENT_SORT_NAME:
> -		sort = events_name_cmp;
> -		break;
> -	case EVENT_SORT_SYSTEM:
> -		sort = events_system_cmp;
> -		break;
> -	default:
> -		return events;
> -	}
> -
> -	qsort(events, pevent->nr_events, sizeof(*events), sort);
> -	pevent->last_type = sort_type;
> -
> -	return events;
> -}
> -
>  static struct format_field **
>  get_event_fields(const char *type, const char *name,
>  		 int count, struct format_field *list)
> @@ -4848,34 +4686,6 @@ get_event_fields(const char *type, const char *name,
>  	return fields;
>  }
>  
> -/**
> - * pevent_event_common_fields - return a list of common fields for an event
> - * @event: the event to return the common fields of.
> - *
> - * Returns an allocated array of fields. The last item in the array is NULL.
> - * The array must be freed with free().
> - */
> -struct format_field **pevent_event_common_fields(struct event_format *event)
> -{
> -	return get_event_fields("common", event->name,
> -				event->format.nr_common,
> -				event->format.common_fields);
> -}
> -
> -/**
> - * pevent_event_fields - return a list of event specific fields for an event
> - * @event: the event to return the fields of.
> - *
> - * Returns an allocated array of fields. The last item in the array is NULL.
> - * The array must be freed with free().
> - */
> -struct format_field **pevent_event_fields(struct event_format *event)
> -{
> -	return get_event_fields("event", event->name,
> -				event->format.nr_fields,
> -				event->format.fields);
> -}
> -
>  static void print_fields(struct trace_seq *s, struct print_flag_sym *field)
>  {
>  	trace_seq_printf(s, "{ %s, %s }", field->value, field->str);
> @@ -5467,56 +5277,6 @@ int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
>  }
>  
>  /**
> - * pevent_get_common_field_val - find a common field and return its value
> - * @s: The seq to print to on error
> - * @event: the event that the field is for
> - * @name: The name of the field
> - * @record: The record with the field name.
> - * @val: place to store the value of the field.
> - * @err: print default error if failed.
> - *
> - * Returns 0 on success -1 on field not found.
> - */
> -int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
> -				const char *name, struct pevent_record *record,
> -				unsigned long long *val, int err)
> -{
> -	struct format_field *field;
> -
> -	if (!event)
> -		return -1;
> -
> -	field = pevent_find_common_field(event, name);
> -
> -	return get_field_val(s, field, name, record, val, err);
> -}
> -
> -/**
> - * pevent_get_any_field_val - find a any field and return its value
> - * @s: The seq to print to on error
> - * @event: the event that the field is for
> - * @name: The name of the field
> - * @record: The record with the field name.
> - * @val: place to store the value of the field.
> - * @err: print default error if failed.
> - *
> - * Returns 0 on success -1 on field not found.
> - */
> -int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
> -			     const char *name, struct pevent_record *record,
> -			     unsigned long long *val, int err)
> -{
> -	struct format_field *field;
> -
> -	if (!event)
> -		return -1;
> -
> -	field = pevent_find_any_field(event, name);
> -
> -	return get_field_val(s, field, name, record, val, err);
> -}
> -
> -/**
>   * pevent_print_num_field - print a field and a format
>   * @s: The seq to print to
>   * @fmt: The printf format to print the field with.
> diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
> index 7a3873f..8e50f9d 100644
> --- a/tools/lib/traceevent/event-parse.h
> +++ b/tools/lib/traceevent/event-parse.h
> @@ -597,15 +597,10 @@ enum trace_flag_type {
>  };
>  
>  int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
> -void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock);
>  int pevent_register_function(struct pevent *pevent, char *name,
>  			     unsigned long long addr, char *mod);
>  int pevent_register_print_string(struct pevent *pevent, const char *fmt,
>  				 unsigned long long addr);
> -int pevent_pid_is_registered(struct pevent *pevent, int pid);
> -
> -void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
> -			struct pevent_record *record, bool use_trace_clock);
>  
>  int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
>  			     int long_size);
> @@ -625,12 +620,6 @@ void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
>  int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
>  			 const char *name, struct pevent_record *record,
>  			 unsigned long long *val, int err);
> -int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
> -				const char *name, struct pevent_record *record,
> -				unsigned long long *val, int err);
> -int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
> -			     const char *name, struct pevent_record *record,
> -			     unsigned long long *val, int err);
>  
>  int pevent_print_num_field(struct trace_seq *s, const char *fmt,
>  			   struct event_format *event, const char *name,
> @@ -672,7 +661,6 @@ pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *na
>  void pevent_data_lat_fmt(struct pevent *pevent,
>  			 struct trace_seq *s, struct pevent_record *record);
>  int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
> -struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
>  int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
>  const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
>  void pevent_event_info(struct trace_seq *s, struct event_format *event,
> @@ -680,10 +668,6 @@ void pevent_event_info(struct trace_seq *s, struct event_format *event,
>  int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
>  		    char *buf, size_t buflen);
>  
> -struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
> -struct format_field **pevent_event_common_fields(struct event_format *event);
> -struct format_field **pevent_event_fields(struct event_format *event);
> -
>  static inline int pevent_get_cpus(struct pevent *pevent)
>  {
>  	return pevent->cpus;
> -- 
> 1.7.10.4

Re: [PATCH] tools: lib: traceevent: event-parse.c: Remove some unused functions

[Jiri Olsa]

On Mon, Dec 22, 2014 at 12:52:10PM -0200, Arnaldo Carvalho de Melo wrote:
> Em Sat, Dec 20, 2014 at 01:45:41PM +0100, Rickard Strandqvist escreveu:
> > Removes some functions that are not used anywhere:
> > pevent_get_any_field_val() pevent_get_common_field_val() pevent_event_fields() pevent_event_common_fields() pevent_list_events() pevent_print_event() pevent_data_event_from_type() pevent_register_trace_clock() pevent_pid_is_registered()
> > 
> > This was partially found by using a static code analysis program called cppcheck.
> 
> Steven, Namhyung, Jiri:
> 
> Are you ok with me applying this patch? I'm all for it, dead code better
> be removed, but I don't know what are your plans wrt synchronization
> with the trace-cmd repo.

I'm not aware about more porting from traceevent lib, but I'm
guessing there's still lot of things missing..?

However, if we go with the removal, this patch has same
issue as the other one.. missing removal of functions
used only in removed code:


  CC FPIC  event-parse.o
/home/jolsa/kernel.org/linux-perf/tools/lib/traceevent/event-parse.c:4597:13: warning: ‘is_timestamp_in_us’ defined but not used [-Wunused-function]
 static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock)
             ^
/home/jolsa/kernel.org/linux-perf/tools/lib/traceevent/event-parse.c:4624:12: warning: ‘events_name_cmp’ defined but not used [-Wunused-function]
 static int events_name_cmp(const void *a, const void *b)
            ^
/home/jolsa/kernel.org/linux-perf/tools/lib/traceevent/event-parse.c:4641:12: warning: ‘events_system_cmp’ defined but not used [-Wunused-function]
 static int events_system_cmp(const void *a, const void *b)
            ^
/home/jolsa/kernel.org/linux-perf/tools/lib/traceevent/event-parse.c:4659:1: warning: ‘get_event_fields’ defined but not used [-Wunused-function]
 get_event_fields(const char *type, const char *name,
 ^
  CC FPIC  event-plugin.o


thanks,
jirka

Re: [PATCH] tools: lib: traceevent: event-parse.c: Remove some unused functions

[Rickard Strandqvist]

2014-12-22 16:07 GMT+01:00 Jiri Olsa <jolsa@redhat.com>:
> On Mon, Dec 22, 2014 at 12:52:10PM -0200, Arnaldo Carvalho de Melo wrote:
>> Em Sat, Dec 20, 2014 at 01:45:41PM +0100, Rickard Strandqvist escreveu:
>> > Removes some functions that are not used anywhere:
>> > pevent_get_any_field_val() pevent_get_common_field_val() pevent_event_fields() pevent_event_common_fields() pevent_list_events() pevent_print_event() pevent_data_event_from_type() pevent_register_trace_clock() pevent_pid_is_registered()
>> >
>> > This was partially found by using a static code analysis program called cppcheck.
>>
>> Steven, Namhyung, Jiri:
>>
>> Are you ok with me applying this patch? I'm all for it, dead code better
>> be removed, but I don't know what are your plans wrt synchronization
>> with the trace-cmd repo.
>
> I'm not aware about more porting from traceevent lib, but I'm
> guessing there's still lot of things missing..?
>
> However, if we go with the removal, this patch has same
> issue as the other one.. missing removal of functions
> used only in removed code:
>
>
>   CC FPIC  event-parse.o
> /home/jolsa/kernel.org/linux-perf/tools/lib/traceevent/event-parse.c:4597:13: warning: ‘is_timestamp_in_us’ defined but not used [-Wunused-function]
>  static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock)
>              ^
> /home/jolsa/kernel.org/linux-perf/tools/lib/traceevent/event-parse.c:4624:12: warning: ‘events_name_cmp’ defined but not used [-Wunused-function]
>  static int events_name_cmp(const void *a, const void *b)
>             ^
> /home/jolsa/kernel.org/linux-perf/tools/lib/traceevent/event-parse.c:4641:12: warning: ‘events_system_cmp’ defined but not used [-Wunused-function]
>  static int events_system_cmp(const void *a, const void *b)
>             ^
> /home/jolsa/kernel.org/linux-perf/tools/lib/traceevent/event-parse.c:4659:1: warning: ‘get_event_fields’ defined but not used [-Wunused-function]
>  get_event_fields(const char *type, const char *name,
>  ^
>   CC FPIC  event-plugin.o
>
>
> thanks,
> jirka

Hi

Sounds good!
I'll check on the warnings to.

Kind regards
Rickard Strandqvist

Re: [PATCH] tools: lib: traceevent: event-parse.c: Remove some unused functions

[Namhyung Kim]

Hi Arnaldo and Rickard,

On Mon, Dec 22, 2014 at 12:52:10PM -0200, Arnaldo Carvalho de Melo wrote:
> Em Sat, Dec 20, 2014 at 01:45:41PM +0100, Rickard Strandqvist escreveu:
> > Removes some functions that are not used anywhere:
> > pevent_get_any_field_val() pevent_get_common_field_val() pevent_event_fields() pevent_event_common_fields() pevent_list_events() pevent_print_event() pevent_data_event_from_type() pevent_register_trace_clock() pevent_pid_is_registered()
> > 
> > This was partially found by using a static code analysis program called cppcheck.
> 
> Steven, Namhyung, Jiri:
> 
> Are you ok with me applying this patch? I'm all for it, dead code better
> be removed, but I don't know what are your plans wrt synchronization
> with the trace-cmd repo.

They're used by trace-cmd..  Currently Steve backports changes in
libtraceevent to trace-cmd repo occasionally but it eventually will be
a generic standalone library so I'd like to keep the APIs.

Thanks,
Namhyung

Re: [PATCH] tools: lib: traceevent: event-parse.c: Remove some unused functions

[Arnaldo Carvalho de Melo]

Em Tue, Dec 23, 2014 at 12:14:50PM +0900, Namhyung Kim escreveu:
> Hi Arnaldo and Rickard,
> 
> On Mon, Dec 22, 2014 at 12:52:10PM -0200, Arnaldo Carvalho de Melo wrote:
> > Em Sat, Dec 20, 2014 at 01:45:41PM +0100, Rickard Strandqvist escreveu:
> > > Removes some functions that are not used anywhere:
> > > pevent_get_any_field_val() pevent_get_common_field_val() pevent_event_fields() pevent_event_common_fields() pevent_list_events() pevent_print_event() pevent_data_event_from_type() pevent_register_trace_clock() pevent_pid_is_registered()
> > > 
> > > This was partially found by using a static code analysis program called cppcheck.
> > 
> > Steven, Namhyung, Jiri:
> > 
> > Are you ok with me applying this patch? I'm all for it, dead code better
> > be removed, but I don't know what are your plans wrt synchronization
> > with the trace-cmd repo.
> 
> They're used by trace-cmd..  Currently Steve backports changes in
> libtraceevent to trace-cmd repo occasionally but it eventually will be
> a generic standalone library so I'd like to keep the APIs.

So there are plans to use them in the near future, ok.

- Arnaldo