diff mbox series

[v2,06/10] tools tools, tools lib traceevent: Make traceevent APIs more consistent

Message ID 20190408152340.12450-7-tstoyanov@vmware.com (mailing list archive)
State Superseded
Headers show
Series Backport of traceevent APIs cleanup changes from kernel tree to trace-cmd | expand

Commit Message

Tzvetomir Stoyanov April 8, 2019, 3:23 p.m. UTC
Rename some traceevent APIs for consistency:

tep_pid_is_registered() to tep_is_pid_registered()
tep_file_bigendian() to tep_is_file_bigendian()

  to make the names and return values consistent with other tep_is_... APIs

tep_data_lat_fmt() to tep_data_latency_format()

  to make the name more descriptive

tep_host_bigendian() to tep_is_bigendian()
tep_set_host_bigendian() to tep_set_local_bigendian()
tep_is_host_bigendian() to tep_is_local_bigendian()

  "host" can be confused with VMs, and "local" is about the local
  machine. All tep_is_..._bigendian(struct tep_handle *tep) APIs return
  the saved data in the tep handle, while tep_is_bigendian() returns
  the running machine's endianness.

All tep_is_... functions are modified to return bool value, instead of int.

Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20190327141946.4353-2-tstoyanov@vmware.com
Link: http://lkml.kernel.org/r/20190401164344.288624897@goodmis.org
[ Removed some extra parenthesis around return statements ]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 include/traceevent/event-parse.h | 16 ++++++++--------
 lib/trace-cmd/trace-input.c      | 10 +++++-----
 lib/traceevent/event-parse-api.c | 32 ++++++++++++++++----------------
 lib/traceevent/event-parse.c     | 28 ++++++++++++++--------------
 plugins/plugin_kvm.c             |  4 ++--
 python/tracecmd.py               |  2 +-
 tracecmd/trace-output.c          |  2 +-
 tracecmd/trace-read.c            |  4 ++--
 tracecmd/trace-split.c           |  2 +-
 9 files changed, 50 insertions(+), 50 deletions(-)

Comments

Steven Rostedt April 8, 2019, 4:39 p.m. UTC | #1
On Mon,  8 Apr 2019 18:23:36 +0300
Tzvetomir Stoyanov <tstoyanov@vmware.com> wrote:

> Rename some traceevent APIs for consistency:
> 
> tep_pid_is_registered() to tep_is_pid_registered()
> tep_file_bigendian() to tep_is_file_bigendian()
> 
>   to make the names and return values consistent with other tep_is_... APIs
> 
> tep_data_lat_fmt() to tep_data_latency_format()
> 
>   to make the name more descriptive
> 
> tep_host_bigendian() to tep_is_bigendian()
> tep_set_host_bigendian() to tep_set_local_bigendian()
> tep_is_host_bigendian() to tep_is_local_bigendian()
> 
>   "host" can be confused with VMs, and "local" is about the local
>   machine. All tep_is_..._bigendian(struct tep_handle *tep) APIs return
>   the saved data in the tep handle, while tep_is_bigendian() returns
>   the running machine's endianness.
> 
> All tep_is_... functions are modified to return bool value, instead of int.
> 

This one broke KernelShark:

Scanning dependencies of target kshark
[  1%] Building C object src/CMakeFiles/kshark.dir/libkshark.c.o
/work/git/trace-cmd.git/kernel-shark/src/libkshark.c: In function ‘kshark_get_latency’:
/work/git/trace-cmd.git/kernel-shark/src/libkshark.c:969:2: warning: implicit declaration of function ‘tep_data_lat_fmt’; did you mean ‘tep_data_flags’? [-Wimplicit-function-declaration]
  tep_data_lat_fmt(pe, &seq, record);
  ^~~~~~~~~~~~~~~~
  tep_data_flags

I applied patches 1-5. Care to fix this and resend 6-10 (as a new 1-5 v3)

Thanks!

-- Steve

> Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Jiri Olsa <jolsa@redhat.com>
> Cc: Namhyung Kim <namhyung@kernel.org>
> Link: http://lkml.kernel.org/r/20190327141946.4353-2-tstoyanov@vmware.com
> Link: http://lkml.kernel.org/r/20190401164344.288624897@goodmis.org
> [ Removed some extra parenthesis around return statements ]
> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> ---
>  include/traceevent/event-parse.h | 16 ++++++++--------
>  lib/trace-cmd/trace-input.c      | 10 +++++-----
>  lib/traceevent/event-parse-api.c | 32 ++++++++++++++++----------------
>  lib/traceevent/event-parse.c     | 28 ++++++++++++++--------------
>  plugins/plugin_kvm.c             |  4 ++--
>  python/tracecmd.py               |  2 +-
>  tracecmd/trace-output.c          |  2 +-
>  tracecmd/trace-read.c            |  4 ++--
>  tracecmd/trace-split.c           |  2 +-
>  9 files changed, 50 insertions(+), 50 deletions(-)
> 
> diff --git a/include/traceevent/event-parse.h b/include/traceevent/event-parse.h
> index 12cbed0..f8a5461 100644
> --- a/include/traceevent/event-parse.h
> +++ b/include/traceevent/event-parse.h
> @@ -398,7 +398,7 @@ void tep_set_flag(struct tep_handle *tep, int flag);
>  void tep_clear_flag(struct tep_handle *tep, enum tep_flag flag);
>  bool tep_test_flag(struct tep_handle *tep, enum tep_flag flags);
>  
> -static inline int tep_host_bigendian(void)
> +static inline int tep_is_bigendian(void)
>  {
>  	unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 };
>  	unsigned int val;
> @@ -426,7 +426,7 @@ int tep_register_function(struct tep_handle *pevent, char *name,
>  			  unsigned long long addr, char *mod);
>  int tep_register_print_string(struct tep_handle *pevent, const char *fmt,
>  			      unsigned long long addr);
> -int tep_pid_is_registered(struct tep_handle *pevent, int pid);
> +bool tep_is_pid_registered(struct tep_handle *pevent, int pid);
>  
>  void tep_print_event_task(struct tep_handle *pevent, struct trace_seq *s,
>  			  struct tep_event *event,
> @@ -512,8 +512,8 @@ tep_find_event_by_name(struct tep_handle *pevent, const char *sys, const char *n
>  struct tep_event *
>  tep_find_event_by_record(struct tep_handle *pevent, struct tep_record *record);
>  
> -void tep_data_lat_fmt(struct tep_handle *pevent,
> -		      struct trace_seq *s, struct tep_record *record);
> +void tep_data_latency_format(struct tep_handle *pevent,
> +			     struct trace_seq *s, struct tep_record *record);
>  int tep_data_type(struct tep_handle *pevent, struct tep_record *rec);
>  int tep_data_pid(struct tep_handle *pevent, struct tep_record *rec);
>  int tep_data_preempt_count(struct tep_handle *pevent, struct tep_record *rec);
> @@ -550,11 +550,11 @@ int tep_get_long_size(struct tep_handle *pevent);
>  void tep_set_long_size(struct tep_handle *pevent, int long_size);
>  int tep_get_page_size(struct tep_handle *pevent);
>  void tep_set_page_size(struct tep_handle *pevent, int _page_size);
> -int tep_file_bigendian(struct tep_handle *pevent);
> +bool tep_is_file_bigendian(struct tep_handle *pevent);
>  void tep_set_file_bigendian(struct tep_handle *pevent, enum tep_endian endian);
> -int tep_is_host_bigendian(struct tep_handle *pevent);
> -void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian);
> -int tep_is_latency_format(struct tep_handle *pevent);
> +bool tep_is_local_bigendian(struct tep_handle *pevent);
> +void tep_set_local_bigendian(struct tep_handle *pevent, enum tep_endian endian);
> +bool tep_is_latency_format(struct tep_handle *pevent);
>  void tep_set_latency_format(struct tep_handle *pevent, int lat);
>  int tep_get_header_page_size(struct tep_handle *pevent);
>  void tep_set_parsing_failures(struct tep_handle *tep, int parsing_failures);
> diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
> index 643d8ac..d5ee371 100644
> --- a/lib/trace-cmd/trace-input.c
> +++ b/lib/trace-cmd/trace-input.c
> @@ -1610,7 +1610,7 @@ tracecmd_translate_data(struct tracecmd_input *handle,
>  	memset(record, 0, sizeof(*record));
>  
>  	record->ref_count = 1;
> -	if (tep_is_host_bigendian(pevent) == tep_file_bigendian(pevent))
> +	if (tep_is_local_bigendian(pevent) == tep_is_file_bigendian(pevent))
>  		swap = 0;
>  	record->data = kbuffer_translate_data(swap, ptr, &length);
>  	record->size = length;
> @@ -1652,7 +1652,7 @@ tracecmd_read_page_record(struct tep_handle *pevent, void *page, int size,
>  	enum kbuffer_endian endian;
>  	void *ptr;
>  
> -	if (tep_file_bigendian(pevent))
> +	if (tep_is_file_bigendian(pevent))
>  		endian = KBUFFER_ENDIAN_BIG;
>  	else
>  		endian = KBUFFER_ENDIAN_LITTLE;
> @@ -2257,7 +2257,7 @@ static int read_cpu_data(struct tracecmd_input *handle)
>  	else
>  		long_size = KBUFFER_LSIZE_4;
>  
> -	if (tep_file_bigendian(handle->pevent))
> +	if (tep_is_file_bigendian(handle->pevent))
>  		endian = KBUFFER_ENDIAN_BIG;
>  	else
>  		endian = KBUFFER_ENDIAN_LITTLE;
> @@ -2466,7 +2466,7 @@ int tracecmd_make_pipe(struct tracecmd_input *handle, int cpu, int fd, int cpus)
>  	else
>  		long_size = KBUFFER_LSIZE_4;
>  
> -	if (tep_file_bigendian(handle->pevent))
> +	if (tep_is_file_bigendian(handle->pevent))
>  		endian = KBUFFER_ENDIAN_BIG;
>  	else
>  		endian = KBUFFER_ENDIAN_LITTLE;
> @@ -2636,7 +2636,7 @@ struct tracecmd_input *tracecmd_alloc_fd(int fd)
>  	handle->plugin_list = tracecmd_load_plugins(handle->pevent);
>  
>  	tep_set_file_bigendian(handle->pevent, buf[0]);
> -	tep_set_host_bigendian(handle->pevent, tracecmd_host_bigendian());
> +	tep_set_local_bigendian(handle->pevent, tracecmd_host_bigendian());
>  
>  	do_read_check(handle, buf, 1);
>  	handle->long_size = buf[0];
> diff --git a/lib/traceevent/event-parse-api.c b/lib/traceevent/event-parse-api.c
> index fb49d1b..13d65a8 100644
> --- a/lib/traceevent/event-parse-api.c
> +++ b/lib/traceevent/event-parse-api.c
> @@ -249,16 +249,16 @@ void tep_set_page_size(struct tep_handle *pevent, int _page_size)
>  }
>  
>  /**
> - * tep_file_bigendian - get if the file is in big endian order
> + * tep_is_file_bigendian - return the endian of the file
>   * @pevent: a handle to the tep_handle
>   *
> - * This returns if the file is in big endian order
> - * If @pevent is NULL, 0 is returned.
> + * This returns true if the file is in big endian order
> + * If @pevent is NULL, false is returned.
>   */
> -int tep_file_bigendian(struct tep_handle *pevent)
> +bool tep_is_file_bigendian(struct tep_handle *pevent)
>  {
>  	if (pevent)
> -		return pevent->file_bigendian;
> +		return (pevent->file_bigendian == TEP_BIG_ENDIAN);
>  	return 0;
>  }
>  
> @@ -276,13 +276,13 @@ void tep_set_file_bigendian(struct tep_handle *pevent, enum tep_endian endian)
>  }
>  
>  /**
> - * tep_is_host_bigendian - get if the order of the current host is big endian
> + * tep_is_local_bigendian - return the endian of the saved local machine
>   * @pevent: a handle to the tep_handle
>   *
> - * This gets if the order of the current host is big endian
> - * If @pevent is NULL, 0 is returned.
> + * This returns true if the saved local machine in @pevent is big endian.
> + * If @pevent is NULL, false is returned.
>   */
> -int tep_is_host_bigendian(struct tep_handle *pevent)
> +bool tep_is_local_bigendian(struct tep_handle *pevent)
>  {
>  	if (pevent)
>  		return pevent->host_bigendian;
> @@ -290,13 +290,13 @@ int tep_is_host_bigendian(struct tep_handle *pevent)
>  }
>  
>  /**
> - * tep_set_host_bigendian - set the order of the local host
> + * tep_set_local_bigendian - set the stored local machine endian order
>   * @pevent: a handle to the tep_handle
>   * @endian: non zero, if the local host has big endian order
>   *
> - * This sets the order of the local host
> + * This sets the endian order for the local machine.
>   */
> -void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian)
> +void tep_set_local_bigendian(struct tep_handle *pevent, enum tep_endian endian)
>  {
>  	if (pevent)
>  		pevent->host_bigendian = endian;
> @@ -306,14 +306,14 @@ void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian)
>   * tep_is_latency_format - get if the latency output format is configured
>   * @pevent: a handle to the tep_handle
>   *
> - * This gets if the latency output format is configured
> - * If @pevent is NULL, 0 is returned.
> + * This returns true if the latency output format is configured
> + * If @pevent is NULL, false is returned.
>   */
> -int tep_is_latency_format(struct tep_handle *pevent)
> +bool tep_is_latency_format(struct tep_handle *pevent)
>  {
>  	if (pevent)
>  		return pevent->latency_format;
> -	return 0;
> +	return false;
>  }
>  
>  /**
> diff --git a/lib/traceevent/event-parse.c b/lib/traceevent/event-parse.c
> index a17f4f8..969f259 100644
> --- a/lib/traceevent/event-parse.c
> +++ b/lib/traceevent/event-parse.c
> @@ -199,23 +199,23 @@ static const char *find_cmdline(struct tep_handle *pevent, int pid)
>  }
>  
>  /**
> - * tep_pid_is_registered - return if a pid has a cmdline registered
> - * @pevent: handle for the pevent
> + * tep_is_pid_registered - return if a pid has a cmdline registered
> + * @pevent: a handle to the trace event parser context
>   * @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.
> + * Returns true if the pid has a cmdline mapped to it
> + * false otherwise.
>   */
> -int tep_pid_is_registered(struct tep_handle *pevent, int pid)
> +bool tep_is_pid_registered(struct tep_handle *pevent, int pid)
>  {
>  	const struct tep_cmdline *comm;
>  	struct tep_cmdline key;
>  
>  	if (!pid)
> -		return 1;
> +		return true;
>  
>  	if (!pevent->cmdlines && cmdline_init(pevent))
> -		return 0;
> +		return false;
>  
>  	key.pid = pid;
>  
> @@ -223,8 +223,8 @@ int tep_pid_is_registered(struct tep_handle *pevent, int pid)
>  		       sizeof(*pevent->cmdlines), cmdline_cmp);
>  
>  	if (comm)
> -		return 1;
> -	return 0;
> +		return true;
> +	return false;
>  }
>  
>  /*
> @@ -5172,7 +5172,7 @@ out_failed:
>  }
>  
>  /**
> - * tep_data_lat_fmt - parse the data for the latency format
> + * tep_data_latency_format - parse the data for the latency format
>   * @pevent: a handle to the pevent
>   * @s: the trace_seq to write to
>   * @record: the record to read from
> @@ -5181,8 +5181,8 @@ out_failed:
>   * need rescheduling, in hard/soft interrupt, preempt count
>   * and lock depth) and places it into the trace_seq.
>   */
> -void tep_data_lat_fmt(struct tep_handle *pevent,
> -		      struct trace_seq *s, struct tep_record *record)
> +void tep_data_latency_format(struct tep_handle *pevent,
> +			     struct trace_seq *s, struct tep_record *record)
>  {
>  	static int check_lock_depth = 1;
>  	static int check_migrate_disable = 1;
> @@ -5532,7 +5532,7 @@ void tep_print_event_time(struct tep_handle *pevent, struct trace_seq *s,
>  	}
>  
>  	if (pevent->latency_format) {
> -		tep_data_lat_fmt(pevent, s, record);
> +		tep_data_latency_format(pevent, s, record);
>  	}
>  
>  	if (use_usec_format) {
> @@ -6827,7 +6827,7 @@ struct tep_handle *tep_alloc(void)
>  
>  	if (pevent) {
>  		pevent->ref_count = 1;
> -		pevent->host_bigendian = tep_host_bigendian();
> +		pevent->host_bigendian = tep_is_bigendian();
>  	}
>  
>  	return pevent;
> diff --git a/plugins/plugin_kvm.c b/plugins/plugin_kvm.c
> index ddac21a..e23b513 100644
> --- a/plugins/plugin_kvm.c
> +++ b/plugins/plugin_kvm.c
> @@ -386,8 +386,8 @@ static int kvm_mmu_print_role(struct trace_seq *s, struct tep_record *record,
>  	 * We can only use the structure if file is of the same
>  	 * endianness.
>  	 */
> -	if (tep_file_bigendian(event->pevent) ==
> -	    tep_is_host_bigendian(event->pevent)) {
> +	if (tep_is_file_bigendian(event->pevent) ==
> +	    tep_is_local_bigendian(event->pevent)) {
>  
>  		trace_seq_printf(s, "%u/%u q%u%s %s%s %spge %snxe",
>  				 role.level,
> diff --git a/python/tracecmd.py b/python/tracecmd.py
> index a6671f6..677c0f2 100644
> --- a/python/tracecmd.py
> +++ b/python/tracecmd.py
> @@ -166,7 +166,7 @@ class PEvent(object):
>  
>      @cached_property
>      def file_endian(self):
> -        if tep_file_bigendian(self._pevent):
> +        if tep_is_file_bigendian(self._pevent):
>              return '>'
>          return '<'
>  
> diff --git a/tracecmd/trace-output.c b/tracecmd/trace-output.c
> index 1c2e92c..33d6ce3 100644
> --- a/tracecmd/trace-output.c
> +++ b/tracecmd/trace-output.c
> @@ -808,7 +808,7 @@ create_file_fd(int fd, struct tracecmd_input *ihandle,
>  		/* Use the pevent of the ihandle for later writes */
>  		handle->pevent = tracecmd_get_pevent(ihandle);
>  		tep_ref(pevent);
> -		if (tep_file_bigendian(pevent))
> +		if (tep_is_file_bigendian(pevent))
>  			buf[0] = 1;
>  		else
>  			buf[0] = 0;
> diff --git a/tracecmd/trace-read.c b/tracecmd/trace-read.c
> index 0d16b15..52fa1bd 100644
> --- a/tracecmd/trace-read.c
> +++ b/tracecmd/trace-read.c
> @@ -1700,8 +1700,8 @@ void trace_report (int argc, char **argv)
>  
>  		if (show_endian) {
>  			printf("file is %s endian and host is %s endian\n",
> -				tep_file_bigendian(pevent) ? "big" : "little",
> -				tep_is_host_bigendian(pevent) ? "big" : "little");
> +				tep_is_file_bigendian(pevent) ? "big" : "little",
> +				tep_is_local_bigendian(pevent) ? "big" : "little");
>  			return;
>  		}
>  
> diff --git a/tracecmd/trace-split.c b/tracecmd/trace-split.c
> index 6043e97..d27b3c6 100644
> --- a/tracecmd/trace-split.c
> +++ b/tracecmd/trace-split.c
> @@ -64,7 +64,7 @@ static int create_type_len(struct tep_handle *pevent, int time, int len)
>  			bigendian = 1;
>  	}
>  
> -	if (tep_file_bigendian(pevent))
> +	if (tep_is_file_bigendian(pevent))
>  		time |= (len << 27);
>  	else
>  		time = (time << 5) | len;
diff mbox series

Patch

diff --git a/include/traceevent/event-parse.h b/include/traceevent/event-parse.h
index 12cbed0..f8a5461 100644
--- a/include/traceevent/event-parse.h
+++ b/include/traceevent/event-parse.h
@@ -398,7 +398,7 @@  void tep_set_flag(struct tep_handle *tep, int flag);
 void tep_clear_flag(struct tep_handle *tep, enum tep_flag flag);
 bool tep_test_flag(struct tep_handle *tep, enum tep_flag flags);
 
-static inline int tep_host_bigendian(void)
+static inline int tep_is_bigendian(void)
 {
 	unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 };
 	unsigned int val;
@@ -426,7 +426,7 @@  int tep_register_function(struct tep_handle *pevent, char *name,
 			  unsigned long long addr, char *mod);
 int tep_register_print_string(struct tep_handle *pevent, const char *fmt,
 			      unsigned long long addr);
-int tep_pid_is_registered(struct tep_handle *pevent, int pid);
+bool tep_is_pid_registered(struct tep_handle *pevent, int pid);
 
 void tep_print_event_task(struct tep_handle *pevent, struct trace_seq *s,
 			  struct tep_event *event,
@@ -512,8 +512,8 @@  tep_find_event_by_name(struct tep_handle *pevent, const char *sys, const char *n
 struct tep_event *
 tep_find_event_by_record(struct tep_handle *pevent, struct tep_record *record);
 
-void tep_data_lat_fmt(struct tep_handle *pevent,
-		      struct trace_seq *s, struct tep_record *record);
+void tep_data_latency_format(struct tep_handle *pevent,
+			     struct trace_seq *s, struct tep_record *record);
 int tep_data_type(struct tep_handle *pevent, struct tep_record *rec);
 int tep_data_pid(struct tep_handle *pevent, struct tep_record *rec);
 int tep_data_preempt_count(struct tep_handle *pevent, struct tep_record *rec);
@@ -550,11 +550,11 @@  int tep_get_long_size(struct tep_handle *pevent);
 void tep_set_long_size(struct tep_handle *pevent, int long_size);
 int tep_get_page_size(struct tep_handle *pevent);
 void tep_set_page_size(struct tep_handle *pevent, int _page_size);
-int tep_file_bigendian(struct tep_handle *pevent);
+bool tep_is_file_bigendian(struct tep_handle *pevent);
 void tep_set_file_bigendian(struct tep_handle *pevent, enum tep_endian endian);
-int tep_is_host_bigendian(struct tep_handle *pevent);
-void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian);
-int tep_is_latency_format(struct tep_handle *pevent);
+bool tep_is_local_bigendian(struct tep_handle *pevent);
+void tep_set_local_bigendian(struct tep_handle *pevent, enum tep_endian endian);
+bool tep_is_latency_format(struct tep_handle *pevent);
 void tep_set_latency_format(struct tep_handle *pevent, int lat);
 int tep_get_header_page_size(struct tep_handle *pevent);
 void tep_set_parsing_failures(struct tep_handle *tep, int parsing_failures);
diff --git a/lib/trace-cmd/trace-input.c b/lib/trace-cmd/trace-input.c
index 643d8ac..d5ee371 100644
--- a/lib/trace-cmd/trace-input.c
+++ b/lib/trace-cmd/trace-input.c
@@ -1610,7 +1610,7 @@  tracecmd_translate_data(struct tracecmd_input *handle,
 	memset(record, 0, sizeof(*record));
 
 	record->ref_count = 1;
-	if (tep_is_host_bigendian(pevent) == tep_file_bigendian(pevent))
+	if (tep_is_local_bigendian(pevent) == tep_is_file_bigendian(pevent))
 		swap = 0;
 	record->data = kbuffer_translate_data(swap, ptr, &length);
 	record->size = length;
@@ -1652,7 +1652,7 @@  tracecmd_read_page_record(struct tep_handle *pevent, void *page, int size,
 	enum kbuffer_endian endian;
 	void *ptr;
 
-	if (tep_file_bigendian(pevent))
+	if (tep_is_file_bigendian(pevent))
 		endian = KBUFFER_ENDIAN_BIG;
 	else
 		endian = KBUFFER_ENDIAN_LITTLE;
@@ -2257,7 +2257,7 @@  static int read_cpu_data(struct tracecmd_input *handle)
 	else
 		long_size = KBUFFER_LSIZE_4;
 
-	if (tep_file_bigendian(handle->pevent))
+	if (tep_is_file_bigendian(handle->pevent))
 		endian = KBUFFER_ENDIAN_BIG;
 	else
 		endian = KBUFFER_ENDIAN_LITTLE;
@@ -2466,7 +2466,7 @@  int tracecmd_make_pipe(struct tracecmd_input *handle, int cpu, int fd, int cpus)
 	else
 		long_size = KBUFFER_LSIZE_4;
 
-	if (tep_file_bigendian(handle->pevent))
+	if (tep_is_file_bigendian(handle->pevent))
 		endian = KBUFFER_ENDIAN_BIG;
 	else
 		endian = KBUFFER_ENDIAN_LITTLE;
@@ -2636,7 +2636,7 @@  struct tracecmd_input *tracecmd_alloc_fd(int fd)
 	handle->plugin_list = tracecmd_load_plugins(handle->pevent);
 
 	tep_set_file_bigendian(handle->pevent, buf[0]);
-	tep_set_host_bigendian(handle->pevent, tracecmd_host_bigendian());
+	tep_set_local_bigendian(handle->pevent, tracecmd_host_bigendian());
 
 	do_read_check(handle, buf, 1);
 	handle->long_size = buf[0];
diff --git a/lib/traceevent/event-parse-api.c b/lib/traceevent/event-parse-api.c
index fb49d1b..13d65a8 100644
--- a/lib/traceevent/event-parse-api.c
+++ b/lib/traceevent/event-parse-api.c
@@ -249,16 +249,16 @@  void tep_set_page_size(struct tep_handle *pevent, int _page_size)
 }
 
 /**
- * tep_file_bigendian - get if the file is in big endian order
+ * tep_is_file_bigendian - return the endian of the file
  * @pevent: a handle to the tep_handle
  *
- * This returns if the file is in big endian order
- * If @pevent is NULL, 0 is returned.
+ * This returns true if the file is in big endian order
+ * If @pevent is NULL, false is returned.
  */
-int tep_file_bigendian(struct tep_handle *pevent)
+bool tep_is_file_bigendian(struct tep_handle *pevent)
 {
 	if (pevent)
-		return pevent->file_bigendian;
+		return (pevent->file_bigendian == TEP_BIG_ENDIAN);
 	return 0;
 }
 
@@ -276,13 +276,13 @@  void tep_set_file_bigendian(struct tep_handle *pevent, enum tep_endian endian)
 }
 
 /**
- * tep_is_host_bigendian - get if the order of the current host is big endian
+ * tep_is_local_bigendian - return the endian of the saved local machine
  * @pevent: a handle to the tep_handle
  *
- * This gets if the order of the current host is big endian
- * If @pevent is NULL, 0 is returned.
+ * This returns true if the saved local machine in @pevent is big endian.
+ * If @pevent is NULL, false is returned.
  */
-int tep_is_host_bigendian(struct tep_handle *pevent)
+bool tep_is_local_bigendian(struct tep_handle *pevent)
 {
 	if (pevent)
 		return pevent->host_bigendian;
@@ -290,13 +290,13 @@  int tep_is_host_bigendian(struct tep_handle *pevent)
 }
 
 /**
- * tep_set_host_bigendian - set the order of the local host
+ * tep_set_local_bigendian - set the stored local machine endian order
  * @pevent: a handle to the tep_handle
  * @endian: non zero, if the local host has big endian order
  *
- * This sets the order of the local host
+ * This sets the endian order for the local machine.
  */
-void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian)
+void tep_set_local_bigendian(struct tep_handle *pevent, enum tep_endian endian)
 {
 	if (pevent)
 		pevent->host_bigendian = endian;
@@ -306,14 +306,14 @@  void tep_set_host_bigendian(struct tep_handle *pevent, enum tep_endian endian)
  * tep_is_latency_format - get if the latency output format is configured
  * @pevent: a handle to the tep_handle
  *
- * This gets if the latency output format is configured
- * If @pevent is NULL, 0 is returned.
+ * This returns true if the latency output format is configured
+ * If @pevent is NULL, false is returned.
  */
-int tep_is_latency_format(struct tep_handle *pevent)
+bool tep_is_latency_format(struct tep_handle *pevent)
 {
 	if (pevent)
 		return pevent->latency_format;
-	return 0;
+	return false;
 }
 
 /**
diff --git a/lib/traceevent/event-parse.c b/lib/traceevent/event-parse.c
index a17f4f8..969f259 100644
--- a/lib/traceevent/event-parse.c
+++ b/lib/traceevent/event-parse.c
@@ -199,23 +199,23 @@  static const char *find_cmdline(struct tep_handle *pevent, int pid)
 }
 
 /**
- * tep_pid_is_registered - return if a pid has a cmdline registered
- * @pevent: handle for the pevent
+ * tep_is_pid_registered - return if a pid has a cmdline registered
+ * @pevent: a handle to the trace event parser context
  * @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.
+ * Returns true if the pid has a cmdline mapped to it
+ * false otherwise.
  */
-int tep_pid_is_registered(struct tep_handle *pevent, int pid)
+bool tep_is_pid_registered(struct tep_handle *pevent, int pid)
 {
 	const struct tep_cmdline *comm;
 	struct tep_cmdline key;
 
 	if (!pid)
-		return 1;
+		return true;
 
 	if (!pevent->cmdlines && cmdline_init(pevent))
-		return 0;
+		return false;
 
 	key.pid = pid;
 
@@ -223,8 +223,8 @@  int tep_pid_is_registered(struct tep_handle *pevent, int pid)
 		       sizeof(*pevent->cmdlines), cmdline_cmp);
 
 	if (comm)
-		return 1;
-	return 0;
+		return true;
+	return false;
 }
 
 /*
@@ -5172,7 +5172,7 @@  out_failed:
 }
 
 /**
- * tep_data_lat_fmt - parse the data for the latency format
+ * tep_data_latency_format - parse the data for the latency format
  * @pevent: a handle to the pevent
  * @s: the trace_seq to write to
  * @record: the record to read from
@@ -5181,8 +5181,8 @@  out_failed:
  * need rescheduling, in hard/soft interrupt, preempt count
  * and lock depth) and places it into the trace_seq.
  */
-void tep_data_lat_fmt(struct tep_handle *pevent,
-		      struct trace_seq *s, struct tep_record *record)
+void tep_data_latency_format(struct tep_handle *pevent,
+			     struct trace_seq *s, struct tep_record *record)
 {
 	static int check_lock_depth = 1;
 	static int check_migrate_disable = 1;
@@ -5532,7 +5532,7 @@  void tep_print_event_time(struct tep_handle *pevent, struct trace_seq *s,
 	}
 
 	if (pevent->latency_format) {
-		tep_data_lat_fmt(pevent, s, record);
+		tep_data_latency_format(pevent, s, record);
 	}
 
 	if (use_usec_format) {
@@ -6827,7 +6827,7 @@  struct tep_handle *tep_alloc(void)
 
 	if (pevent) {
 		pevent->ref_count = 1;
-		pevent->host_bigendian = tep_host_bigendian();
+		pevent->host_bigendian = tep_is_bigendian();
 	}
 
 	return pevent;
diff --git a/plugins/plugin_kvm.c b/plugins/plugin_kvm.c
index ddac21a..e23b513 100644
--- a/plugins/plugin_kvm.c
+++ b/plugins/plugin_kvm.c
@@ -386,8 +386,8 @@  static int kvm_mmu_print_role(struct trace_seq *s, struct tep_record *record,
 	 * We can only use the structure if file is of the same
 	 * endianness.
 	 */
-	if (tep_file_bigendian(event->pevent) ==
-	    tep_is_host_bigendian(event->pevent)) {
+	if (tep_is_file_bigendian(event->pevent) ==
+	    tep_is_local_bigendian(event->pevent)) {
 
 		trace_seq_printf(s, "%u/%u q%u%s %s%s %spge %snxe",
 				 role.level,
diff --git a/python/tracecmd.py b/python/tracecmd.py
index a6671f6..677c0f2 100644
--- a/python/tracecmd.py
+++ b/python/tracecmd.py
@@ -166,7 +166,7 @@  class PEvent(object):
 
     @cached_property
     def file_endian(self):
-        if tep_file_bigendian(self._pevent):
+        if tep_is_file_bigendian(self._pevent):
             return '>'
         return '<'
 
diff --git a/tracecmd/trace-output.c b/tracecmd/trace-output.c
index 1c2e92c..33d6ce3 100644
--- a/tracecmd/trace-output.c
+++ b/tracecmd/trace-output.c
@@ -808,7 +808,7 @@  create_file_fd(int fd, struct tracecmd_input *ihandle,
 		/* Use the pevent of the ihandle for later writes */
 		handle->pevent = tracecmd_get_pevent(ihandle);
 		tep_ref(pevent);
-		if (tep_file_bigendian(pevent))
+		if (tep_is_file_bigendian(pevent))
 			buf[0] = 1;
 		else
 			buf[0] = 0;
diff --git a/tracecmd/trace-read.c b/tracecmd/trace-read.c
index 0d16b15..52fa1bd 100644
--- a/tracecmd/trace-read.c
+++ b/tracecmd/trace-read.c
@@ -1700,8 +1700,8 @@  void trace_report (int argc, char **argv)
 
 		if (show_endian) {
 			printf("file is %s endian and host is %s endian\n",
-				tep_file_bigendian(pevent) ? "big" : "little",
-				tep_is_host_bigendian(pevent) ? "big" : "little");
+				tep_is_file_bigendian(pevent) ? "big" : "little",
+				tep_is_local_bigendian(pevent) ? "big" : "little");
 			return;
 		}
 
diff --git a/tracecmd/trace-split.c b/tracecmd/trace-split.c
index 6043e97..d27b3c6 100644
--- a/tracecmd/trace-split.c
+++ b/tracecmd/trace-split.c
@@ -64,7 +64,7 @@  static int create_type_len(struct tep_handle *pevent, int time, int len)
 			bigendian = 1;
 	}
 
-	if (tep_file_bigendian(pevent))
+	if (tep_is_file_bigendian(pevent))
 		time |= (len << 27);
 	else
 		time = (time << 5) | len;