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perf tools: Add dso__data_size()

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

Signed-off-by: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Adrian Hunter 2014-07-22 16:17:35 +03:00 • committed by Arnaldo Carvalho de Melo
commit 6d363459d7
2 changed files with 24 additions and 0 deletions
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22
tools/perf/util/dso.c
View file

@ -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)
{

2
tools/perf/util/dso.h
View file

@ -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,