[PATCH 24/26] perf session: Separating data file properties from session

From: Arnaldo Carvalho de Melo
Date: Tue Oct 22 2013 - 10:31:15 EST

From: Jiri Olsa <jolsa@xxxxxxxxxx>

Removing 'fd, fd_pipe, filename, size' from struct perf_session and
replacing them with struct perf_data_file object.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1381847254-28809-4-git-send-email-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-annotate.c | 2 +-
tools/perf/builtin-buildid-list.c | 2 +-
tools/perf/builtin-record.c | 1 -
tools/perf/builtin-report.c | 8 +++++---
tools/perf/builtin-script.c | 2 +-
tools/perf/util/data.h | 15 +++++++++++++++
tools/perf/util/header.c | 22 +++++++++++++---------
tools/perf/util/session.c | 36 +++++++++++++++++++-----------------
tools/perf/util/session.h | 5 +----
9 files changed, 56 insertions(+), 37 deletions(-)

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 95df683d6074..03cfa592071f 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -259,7 +259,7 @@ static int __cmd_annotate(struct perf_annotate *ann)
}

if (total_nr_samples == 0) {
- ui__error("The %s file has no samples!\n", session->filename);
+ ui__error("The %s file has no samples!\n", file.path);
goto out_delete;
}

diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index 0164c1c3e834..ed3873b3e238 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -73,7 +73,7 @@ static int perf_session__list_build_ids(bool force, bool with_hits)
* in pipe-mode, the only way to get the buildids is to parse
* the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
*/
- if (with_hits || session->fd_pipe)
+ if (with_hits || perf_data_file__is_pipe(&file))
perf_session__process_events(session, &build_id__mark_dso_hit_ops);

perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 428e28f3e677..ab8d15e6e8cc 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -257,7 +257,6 @@ static int process_buildids(struct perf_record *rec)
if (size == 0)
return 0;

- session->fd = file->fd;
return __perf_session__process_events(session, rec->post_processing_offset,
size - rec->post_processing_offset,
size, &build_id__mark_dso_hit_ops);
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 60d7f8ec8505..fa68a36bc461 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -368,8 +368,9 @@ static int perf_report__setup_sample_type(struct perf_report *rep)
{
struct perf_session *self = rep->session;
u64 sample_type = perf_evlist__combined_sample_type(self->evlist);
+ bool is_pipe = perf_data_file__is_pipe(self->file);

- if (!self->fd_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
+ if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
if (sort__has_parent) {
ui__error("Selected --sort parent, but no "
"callchain data. Did you call "
@@ -392,7 +393,7 @@ static int perf_report__setup_sample_type(struct perf_report *rep)
}

if (sort__mode == SORT_MODE__BRANCH) {
- if (!self->fd_pipe &&
+ if (!is_pipe &&
!(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
ui__error("Selected -b but no branch data. "
"Did you call perf record without -b?\n");
@@ -488,6 +489,7 @@ static int __cmd_report(struct perf_report *rep)
struct map *kernel_map;
struct kmap *kernel_kmap;
const char *help = "For a higher level overview, try: perf report --sort comm,dso";
+ struct perf_data_file *file = session->file;

signal(SIGINT, sig_handler);

@@ -572,7 +574,7 @@ static int __cmd_report(struct perf_report *rep)
return 0;

if (nr_samples == 0) {
- ui__error("The %s file has no samples!\n", session->filename);
+ ui__error("The %s file has no samples!\n", file->path);
return 0;
}

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index f0c77a199616..27de6068049d 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1525,7 +1525,7 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
return -1;
}

- input = open(session->filename, O_RDONLY); /* input_name */
+ input = open(file.path, O_RDONLY); /* input_name */
if (input < 0) {
perror("failed to open file");
return -1;
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
index d6c262e42f47..8c2df80152a5 100644
--- a/tools/perf/util/data.h
+++ b/tools/perf/util/data.h
@@ -27,6 +27,21 @@ static inline bool perf_data_file__is_write(struct perf_data_file *file)
return file->mode == PERF_DATA_MODE_WRITE;
}

+static inline int perf_data_file__is_pipe(struct perf_data_file *file)
+{
+ return file->is_pipe;
+}
+
+static inline int perf_data_file__fd(struct perf_data_file *file)
+{
+ return file->fd;
+}
+
+static inline unsigned long perf_data_file__size(struct perf_data_file *file)
+{
+ return file->size;
+}
+
int perf_data_file__open(struct perf_data_file *file);
void perf_data_file__close(struct perf_data_file *file);

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index c3e5a3b817ab..26d9520a0c1b 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -22,6 +22,7 @@
#include "vdso.h"
#include "strbuf.h"
#include "build-id.h"
+#include "data.h"

static bool no_buildid_cache = false;

@@ -2189,7 +2190,7 @@ int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full)
{
struct header_print_data hd;
struct perf_header *header = &session->header;
- int fd = session->fd;
+ int fd = perf_data_file__fd(session->file);
hd.fp = fp;
hd.full = full;

@@ -2650,7 +2651,8 @@ static int perf_header__read_pipe(struct perf_session *session)
struct perf_header *header = &session->header;
struct perf_pipe_file_header f_header;

- if (perf_file_header__read_pipe(&f_header, header, session->fd,
+ if (perf_file_header__read_pipe(&f_header, header,
+ perf_data_file__fd(session->file),
session->repipe) < 0) {
pr_debug("incompatible file format\n");
return -EINVAL;
@@ -2751,18 +2753,19 @@ static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist,

int perf_session__read_header(struct perf_session *session)
{
+ struct perf_data_file *file = session->file;
struct perf_header *header = &session->header;
struct perf_file_header f_header;
struct perf_file_attr f_attr;
u64 f_id;
int nr_attrs, nr_ids, i, j;
- int fd = session->fd;
+ int fd = perf_data_file__fd(file);

session->evlist = perf_evlist__new();
if (session->evlist == NULL)
return -ENOMEM;

- if (session->fd_pipe)
+ if (perf_data_file__is_pipe(file))
return perf_header__read_pipe(session);

if (perf_file_header__read(&f_header, header, fd) < 0)
@@ -2777,7 +2780,7 @@ int perf_session__read_header(struct perf_session *session)
if (f_header.data.size == 0) {
pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n"
"Was the 'perf record' command properly terminated?\n",
- session->filename);
+ file->path);
}

nr_attrs = f_header.attrs.size / f_header.attr_size;
@@ -2990,18 +2993,19 @@ int perf_event__process_tracing_data(struct perf_tool *tool __maybe_unused,
struct perf_session *session)
{
ssize_t size_read, padding, size = event->tracing_data.size;
- off_t offset = lseek(session->fd, 0, SEEK_CUR);
+ int fd = perf_data_file__fd(session->file);
+ off_t offset = lseek(fd, 0, SEEK_CUR);
char buf[BUFSIZ];

/* setup for reading amidst mmap */
- lseek(session->fd, offset + sizeof(struct tracing_data_event),
+ lseek(fd, offset + sizeof(struct tracing_data_event),
SEEK_SET);

- size_read = trace_report(session->fd, &session->pevent,
+ size_read = trace_report(fd, &session->pevent,
session->repipe);
padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read;

- if (readn(session->fd, buf, padding) < 0) {
+ if (readn(fd, buf, padding) < 0) {
pr_err("%s: reading input file", __func__);
return -1;
}
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index d857c18d2eeb..19fc71678c8e 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -18,17 +18,16 @@

static int perf_session__open(struct perf_session *self)
{
- if (self->fd_pipe) {
- if (perf_session__read_header(self) < 0)
- pr_err("incompatible file format (rerun with -v to learn more)");
- return 0;
- }
+ struct perf_data_file *file = self->file;

if (perf_session__read_header(self) < 0) {
pr_err("incompatible file format (rerun with -v to learn more)");
return -1;
}

+ if (perf_data_file__is_pipe(file))
+ return 0;
+
if (!perf_evlist__valid_sample_type(self->evlist)) {
pr_err("non matching sample_type");
return -1;
@@ -87,10 +86,7 @@ struct perf_session *perf_session__new(struct perf_data_file *file,
if (perf_data_file__open(file))
goto out_delete;

- self->fd = file->fd;
- self->fd_pipe = file->is_pipe;
- self->filename = file->path;
- self->size = file->size;
+ self->file = file;

if (perf_data_file__is_read(file)) {
if (perf_session__open(self) < 0)
@@ -158,7 +154,8 @@ void perf_session__delete(struct perf_session *self)
perf_session__delete_threads(self);
perf_session_env__delete(&self->header.env);
machines__exit(&self->machines);
- close(self->fd);
+ if (self->file)
+ perf_data_file__close(self->file);
free(self);
vdso__exit();
}
@@ -1015,6 +1012,7 @@ static int perf_session_deliver_event(struct perf_session *session,
static int perf_session__process_user_event(struct perf_session *session, union perf_event *event,
struct perf_tool *tool, u64 file_offset)
{
+ int fd = perf_data_file__fd(session->file);
int err;

dump_event(session, event, file_offset, NULL);
@@ -1028,7 +1026,7 @@ static int perf_session__process_user_event(struct perf_session *session, union
return err;
case PERF_RECORD_HEADER_TRACING_DATA:
/* setup for reading amidst mmap */
- lseek(session->fd, file_offset, SEEK_SET);
+ lseek(fd, file_offset, SEEK_SET);
return tool->tracing_data(tool, event, session);
case PERF_RECORD_HEADER_BUILD_ID:
return tool->build_id(tool, event, session);
@@ -1154,6 +1152,7 @@ volatile int session_done;
static int __perf_session__process_pipe_events(struct perf_session *self,
struct perf_tool *tool)
{
+ int fd = perf_data_file__fd(self->file);
union perf_event *event;
uint32_t size, cur_size = 0;
void *buf = NULL;
@@ -1172,7 +1171,7 @@ static int __perf_session__process_pipe_events(struct perf_session *self,
return -errno;
more:
event = buf;
- err = readn(self->fd, event, sizeof(struct perf_event_header));
+ err = readn(fd, event, sizeof(struct perf_event_header));
if (err <= 0) {
if (err == 0)
goto done;
@@ -1204,7 +1203,7 @@ more:
p += sizeof(struct perf_event_header);

if (size - sizeof(struct perf_event_header)) {
- err = readn(self->fd, p, size - sizeof(struct perf_event_header));
+ err = readn(fd, p, size - sizeof(struct perf_event_header));
if (err <= 0) {
if (err == 0) {
pr_err("unexpected end of event stream\n");
@@ -1285,6 +1284,7 @@ int __perf_session__process_events(struct perf_session *session,
u64 data_offset, u64 data_size,
u64 file_size, struct perf_tool *tool)
{
+ int fd = perf_data_file__fd(session->file);
u64 head, page_offset, file_offset, file_pos, progress_next;
int err, mmap_prot, mmap_flags, map_idx = 0;
size_t mmap_size;
@@ -1317,7 +1317,7 @@ int __perf_session__process_events(struct perf_session *session,
mmap_flags = MAP_PRIVATE;
}
remap:
- buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd,
+ buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
file_offset);
if (buf == MAP_FAILED) {
pr_err("failed to mmap file\n");
@@ -1382,16 +1382,17 @@ out_err:
int perf_session__process_events(struct perf_session *self,
struct perf_tool *tool)
{
+ u64 size = perf_data_file__size(self->file);
int err;

if (perf_session__register_idle_thread(self) == NULL)
return -ENOMEM;

- if (!self->fd_pipe)
+ if (!perf_data_file__is_pipe(self->file))
err = __perf_session__process_events(self,
self->header.data_offset,
self->header.data_size,
- self->size, tool);
+ size, tool);
else
err = __perf_session__process_pipe_events(self, tool);

@@ -1615,13 +1616,14 @@ int perf_session__cpu_bitmap(struct perf_session *session,
void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
bool full)
{
+ int fd = perf_data_file__fd(session->file);
struct stat st;
int ret;

if (session == NULL || fp == NULL)
return;

- ret = fstat(session->fd, &st);
+ ret = fstat(fd, &st);
if (ret == -1)
return;

diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index e1ca2d0ae541..27c74d38b868 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -30,16 +30,13 @@ struct ordered_samples {

struct perf_session {
struct perf_header header;
- unsigned long size;
struct machines machines;
struct perf_evlist *evlist;
struct pevent *pevent;
struct events_stats stats;
- int fd;
- bool fd_pipe;
bool repipe;
struct ordered_samples ordered_samples;
- const char *filename;
+ struct perf_data_file *file;
};

#define PRINT_IP_OPT_IP (1<<0)
--
1.8.1.4

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