The data files layout is described by HEADER_DIR_FORMAT feature.
Currently it holds only version number (1):
uint64_t version;
The current version holds only version value (1) means that data files:
- Follow the 'data.*' name format.
- Contain raw events data in standard perf format as read from kernel
(and need to be sorted)
Future versions are expected to describe different data files layout
according to special needs.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20190308134745.5057-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
if (!(rec->opts.use_clockid && rec->opts.clockid_res_ns))
perf_header__clear_feat(&session->header, HEADER_CLOCKID);
if (!(rec->opts.use_clockid && rec->opts.clockid_res_ns))
perf_header__clear_feat(&session->header, HEADER_CLOCKID);
+ perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT);
+
perf_header__clear_feat(&session->header, HEADER_STAT);
}
perf_header__clear_feat(&session->header, HEADER_STAT);
}
#include "data.h"
#include "util.h"
#include "debug.h"
#include "data.h"
#include "util.h"
#include "debug.h"
static void close_dir(struct perf_data_file *files, int nr)
{
static void close_dir(struct perf_data_file *files, int nr)
{
if (!files)
return -ENOMEM;
if (!files)
return -ENOMEM;
- data->dir.files = files;
- data->dir.nr = nr;
+ data->dir.version = PERF_DIR_VERSION;
+ data->dir.files = files;
+ data->dir.nr = nr;
for (i = 0; i < nr; i++) {
struct perf_data_file *file = &files[i];
for (i = 0; i < nr; i++) {
struct perf_data_file *file = &files[i];
if (WARN_ON(!data->is_dir))
return -EINVAL;
if (WARN_ON(!data->is_dir))
return -EINVAL;
+ /* The version is provided by DIR_FORMAT feature. */
+ if (WARN_ON(data->dir.version != PERF_DIR_VERSION))
+ return -1;
+
dir = opendir(data->path);
if (!dir)
return -EINVAL;
dir = opendir(data->path);
if (!dir)
return -EINVAL;
enum perf_data_mode mode;
struct {
enum perf_data_mode mode;
struct {
struct perf_data_file *files;
int nr;
} dir;
struct perf_data_file *files;
int nr;
} dir;
sizeof(ff->ph->env.clockid_res_ns));
}
sizeof(ff->ph->env.clockid_res_ns));
}
+static int write_dir_format(struct feat_fd *ff,
+ struct perf_evlist *evlist __maybe_unused)
+{
+ struct perf_session *session;
+ struct perf_data *data;
+
+ session = container_of(ff->ph, struct perf_session, header);
+ data = session->data;
+
+ if (WARN_ON(!perf_data__is_dir(data)))
+ return -1;
+
+ return do_write(ff, &data->dir.version, sizeof(data->dir.version));
+}
+
static int cpu_cache_level__sort(const void *a, const void *b)
{
struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a;
static int cpu_cache_level__sort(const void *a, const void *b)
{
struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a;
ff->ph->env.clockid_res_ns * 1000);
}
ff->ph->env.clockid_res_ns * 1000);
}
+static void print_dir_format(struct feat_fd *ff, FILE *fp)
+{
+ struct perf_session *session;
+ struct perf_data *data;
+
+ session = container_of(ff->ph, struct perf_session, header);
+ data = session->data;
+
+ fprintf(fp, "# directory data version : %"PRIu64"\n", data->dir.version);
+}
+
static void free_event_desc(struct perf_evsel *events)
{
struct perf_evsel *evsel;
static void free_event_desc(struct perf_evsel *events)
{
struct perf_evsel *evsel;
+static int process_dir_format(struct feat_fd *ff,
+ void *_data __maybe_unused)
+{
+ struct perf_session *session;
+ struct perf_data *data;
+
+ session = container_of(ff->ph, struct perf_session, header);
+ data = session->data;
+
+ if (WARN_ON(!perf_data__is_dir(data)))
+ return -1;
+
+ return do_read_u64(ff, &data->dir.version);
+}
+
struct feature_ops {
int (*write)(struct feat_fd *ff, struct perf_evlist *evlist);
void (*print)(struct feat_fd *ff, FILE *fp);
struct feature_ops {
int (*write)(struct feat_fd *ff, struct perf_evlist *evlist);
void (*print)(struct feat_fd *ff, FILE *fp);
FEAT_OPN(CACHE, cache, true),
FEAT_OPR(SAMPLE_TIME, sample_time, false),
FEAT_OPR(MEM_TOPOLOGY, mem_topology, true),
FEAT_OPN(CACHE, cache, true),
FEAT_OPR(SAMPLE_TIME, sample_time, false),
FEAT_OPR(MEM_TOPOLOGY, mem_topology, true),
- FEAT_OPR(CLOCKID, clockid, false)
+ FEAT_OPR(CLOCKID, clockid, false),
+ FEAT_OPN(DIR_FORMAT, dir_format, false)
};
struct header_print_data {
};
struct header_print_data {
HEADER_SAMPLE_TIME,
HEADER_MEM_TOPOLOGY,
HEADER_CLOCKID,
HEADER_SAMPLE_TIME,
HEADER_MEM_TOPOLOGY,
HEADER_CLOCKID,
HEADER_LAST_FEATURE,
HEADER_FEAT_BITS = 256,
};
HEADER_LAST_FEATURE,
HEADER_FEAT_BITS = 256,
};
PERF_HEADER_VERSION_2,
};
PERF_HEADER_VERSION_2,
};
+enum perf_dir_version {
+ PERF_DIR_VERSION = 1,
+};
+
struct perf_file_section {
u64 offset;
u64 size;
struct perf_file_section {
u64 offset;
u64 size;