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Commit 6d363459 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Add dso__data_size() 



Add a function to return the dso data size, for use in estimating the
size an instruction cache.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1406035081-14301-27-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent a6a69db4

tools/perf/util/dso.c

+22 −0
Original line number Diff line number Diff line
@@ -544,6 +544,28 @@ static int data_file_size(struct dso *dso) 
	return 0;

}



/**

 * dso__data_size - Return dso data size

 * @dso: dso object

 * @machine: machine object

 *

 * Return: dso data size

 */

off_t dso__data_size(struct dso *dso, struct machine *machine)

{

	int fd;



	fd = dso__data_fd(dso, machine);

	if (fd < 0)

		return fd;



	if (data_file_size(dso))

		return -1;



	/* For now just estimate dso data size is close to file size */

	return dso->data.file_size;

}



static ssize_t data_read_offset(struct dso *dso, u64 offset,

				u8 *data, ssize_t size)

{

tools/perf/util/dso.h

+2 −0
Original line number Diff line number Diff line
@@ -166,6 +166,7 @@ int dso__read_binary_type_filename(const struct dso *dso, enum dso_binary_type t 
 * The dso__data_* external interface provides following functions:

 *   dso__data_fd

 *   dso__data_close

 *   dso__data_size

 *   dso__data_read_offset

 *   dso__data_read_addr

 *
@@ -203,6 +204,7 @@ int dso__read_binary_type_filename(const struct dso *dso, enum dso_binary_type t 
int dso__data_fd(struct dso *dso, struct machine *machine);

void dso__data_close(struct dso *dso);



off_t dso__data_size(struct dso *dso, struct machine *machine);

ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine,

			      u64 offset, u8 *data, ssize_t size);

ssize_t dso__data_read_addr(struct dso *dso, struct map *map,