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author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-02-03 11:53:14 +0800 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2010-02-03 09:03:59 +0100 |
commit | b8f46c5a34fa64fd456295388d18f50ae69d9f37 (patch) | |
tree | cba5da0bb3e4ca5c450df8aaa53fc74945c6fd28 /tools/perf | |
parent | 59f411b62c9282891274e721fea29026b0eda3cc (diff) | |
download | kernel_samsung_tuna-b8f46c5a34fa64fd456295388d18f50ae69d9f37.zip kernel_samsung_tuna-b8f46c5a34fa64fd456295388d18f50ae69d9f37.tar.gz kernel_samsung_tuna-b8f46c5a34fa64fd456295388d18f50ae69d9f37.tar.bz2 |
perf tools: Use O_LARGEFILE to open perf data file
Open perf data file with O_LARGEFILE flag since its size is
easily larger that 2G.
For example:
# rm -rf perf.data
# ./perf kmem record sleep 300
[ perf record: Woken up 0 times to write data ]
[ perf record: Captured and wrote 3142.147 MB perf.data
(~137282513 samples) ]
# ll -h perf.data
-rw------- 1 root root 3.1G .....
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <4B68F32A.9040203@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf')
-rw-r--r-- | tools/perf/builtin-record.c | 5 | ||||
-rw-r--r-- | tools/perf/util/header.c | 22 | ||||
-rw-r--r-- | tools/perf/util/session.c | 5 | ||||
-rw-r--r-- | tools/perf/util/trace-event-read.c | 4 |
4 files changed, 23 insertions, 13 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index eea5691..949167e 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -5,6 +5,9 @@ * (or a CPU, or a PID) into the perf.data output file - for * later analysis via perf report. */ +#define _LARGEFILE64_SOURCE +#define _FILE_OFFSET_BITS 64 + #include "builtin.h" #include "perf.h" @@ -451,7 +454,7 @@ static int __cmd_record(int argc, const char **argv) append_file = 0; } - flags = O_CREAT|O_RDWR; + flags = O_CREAT|O_RDWR|O_LARGEFILE; if (append_file) file_new = 0; else diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 2bb2bdb..ed3efd7 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -1,3 +1,6 @@ +#define _LARGEFILE64_SOURCE +#define _FILE_OFFSET_BITS 64 + #include <sys/types.h> #include <byteswap.h> #include <unistd.h> @@ -382,7 +385,7 @@ static int perf_header__adds_write(struct perf_header *self, int fd) sec_size = sizeof(*feat_sec) * nr_sections; sec_start = self->data_offset + self->data_size; - lseek(fd, sec_start + sec_size, SEEK_SET); + lseek64(fd, sec_start + sec_size, SEEK_SET); if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { struct perf_file_section *trace_sec; @@ -390,9 +393,9 @@ static int perf_header__adds_write(struct perf_header *self, int fd) trace_sec = &feat_sec[idx++]; /* Write trace info */ - trace_sec->offset = lseek(fd, 0, SEEK_CUR); + trace_sec->offset = lseek64(fd, 0, SEEK_CUR); read_tracing_data(fd, attrs, nr_counters); - trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; + trace_sec->size = lseek64(fd, 0, SEEK_CUR) - trace_sec->offset; } @@ -402,17 +405,18 @@ static int perf_header__adds_write(struct perf_header *self, int fd) buildid_sec = &feat_sec[idx++]; /* Write build-ids */ - buildid_sec->offset = lseek(fd, 0, SEEK_CUR); + buildid_sec->offset = lseek64(fd, 0, SEEK_CUR); err = dsos__write_buildid_table(fd); if (err < 0) { pr_debug("failed to write buildid table\n"); goto out_free; } - buildid_sec->size = lseek(fd, 0, SEEK_CUR) - buildid_sec->offset; + buildid_sec->size = lseek64(fd, 0, SEEK_CUR) - + buildid_sec->offset; dsos__cache_build_ids(); } - lseek(fd, sec_start, SEEK_SET); + lseek64(fd, sec_start, SEEK_SET); err = do_write(fd, feat_sec, sec_size); if (err < 0) pr_debug("failed to write feature section\n"); @@ -506,7 +510,7 @@ int perf_header__write(struct perf_header *self, int fd, bool at_exit) pr_debug("failed to write perf header\n"); return err; } - lseek(fd, self->data_offset + self->data_size, SEEK_SET); + lseek64(fd, self->data_offset + self->data_size, SEEK_SET); self->frozen = 1; return 0; @@ -560,7 +564,7 @@ int perf_header__process_sections(struct perf_header *self, int fd, sec_size = sizeof(*feat_sec) * nr_sections; - lseek(fd, self->data_offset + self->data_size, SEEK_SET); + lseek64(fd, self->data_offset + self->data_size, SEEK_SET); if (perf_header__getbuffer64(self, fd, feat_sec, sec_size)) goto out_free; @@ -634,7 +638,7 @@ static int perf_file_section__process(struct perf_file_section *self, struct perf_header *ph, int feat, int fd) { - if (lseek(fd, self->offset, SEEK_SET) < 0) { + if (lseek64(fd, self->offset, SEEK_SET) < 0) { pr_debug("Failed to lseek to %Ld offset for feature %d, " "continuing...\n", self->offset, feat); return 0; diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 8e7c189..cf91d09 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1,3 +1,6 @@ +#define _LARGEFILE64_SOURCE +#define _FILE_OFFSET_BITS 64 + #include <linux/kernel.h> #include <byteswap.h> @@ -12,7 +15,7 @@ static int perf_session__open(struct perf_session *self, bool force) { struct stat input_stat; - self->fd = open(self->filename, O_RDONLY); + self->fd = open(self->filename, O_RDONLY|O_LARGEFILE); if (self->fd < 0) { pr_err("failed to open file: %s", self->filename); if (!strcmp(self->filename, "perf.data")) diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c index 1744422..ca3c26d 100644 --- a/tools/perf/util/trace-event-read.c +++ b/tools/perf/util/trace-event-read.c @@ -83,7 +83,7 @@ static char *read_string(void) char *str = NULL; int size = 0; int i; - int r; + s64 r; for (;;) { r = read(input_fd, buf, BUFSIZ); @@ -117,7 +117,7 @@ static char *read_string(void) i++; /* move the file descriptor to the end of the string */ - r = lseek(input_fd, -(r - i), SEEK_CUR); + r = lseek64(input_fd, -(r - i), SEEK_CUR); if (r < 0) die("lseek"); |