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perf header: Don't pass struct perf_file_section to process_##_feat

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struct perf_file_section is used in process_##_feat as container for
size and offset in the file descriptor. These attributes are meaninful
in pipe-mode but struct perf_file_section is not.

Add offset and size variables to struct feat_fd to store
perf_file_section's values in file-mode. Later on, the same variables
can be reused for pipe-mode.

This patch does not change behavior.

Signed-off-by: David Carrillo-Cisneros <davidcc@google.com>
Acked-by: David Ahern <dsahern@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Turner <pjt@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Simon Que <sque@chromium.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20170718042549.145161-10-davidcc@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
David Carrillo-Cisneros 2017-07-17 21:25:42 -07:00 committed by Arnaldo Carvalho de Melo
parent 1a22275449
commit 6255245723
1 changed files with 24 additions and 34 deletions
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58
tools/perf/util/header.c
View File

@ -62,6 +62,8 @@ struct perf_file_attr {
struct feat_fd {
struct perf_header *ph;
int fd;
ssize_t offset;
size_t size;
};
void perf_header__set_feat(struct perf_header *header, int feat)
@ -1593,8 +1595,7 @@ out:
/* Macro for features that simply need to read and store a string. */
#define FEAT_PROCESS_STR_FUN(__feat, __feat_env) \
static int process_##__feat(struct perf_file_section *section __maybe_unused, \
struct feat_fd *ff, void *data __maybe_unused) \
static int process_##__feat(struct feat_fd *ff, void *data __maybe_unused) \
{\
ff->ph->env.__feat_env = do_read_string(ff->fd, ff->ph); \
return ff->ph->env.__feat_env ? 0 : -ENOMEM; \
@ -1607,24 +1608,21 @@ FEAT_PROCESS_STR_FUN(arch, arch);
FEAT_PROCESS_STR_FUN(cpudesc, cpu_desc);
FEAT_PROCESS_STR_FUN(cpuid, cpuid);
static int process_tracing_data(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data)
static int process_tracing_data(struct feat_fd *ff, void *data)
{
ssize_t ret = trace_report(ff->fd, data, false);
return ret < 0 ? -1 : 0;
}
static int process_build_id(struct perf_file_section *section,
struct feat_fd *ff, void *data __maybe_unused)
static int process_build_id(struct feat_fd *ff, void *data __maybe_unused)
{
if (perf_header__read_build_ids(ff->ph, ff->fd, section->offset, section->size))
if (perf_header__read_build_ids(ff->ph, ff->fd, ff->offset, ff->size))
pr_debug("Failed to read buildids, continuing...\n");
return 0;
}
static int process_nrcpus(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data __maybe_unused)
static int process_nrcpus(struct feat_fd *ff, void *data __maybe_unused)
{
int ret;
u32 nr_cpus_avail, nr_cpus_online;
@ -1641,8 +1639,7 @@ static int process_nrcpus(struct perf_file_section *section __maybe_unused,
return 0;
}
static int process_total_mem(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data __maybe_unused)
static int process_total_mem(struct feat_fd *ff, void *data __maybe_unused)
{
u64 total_mem;
int ret;
@ -1687,8 +1684,7 @@ perf_evlist__set_event_name(struct perf_evlist *evlist,
}
static int
process_event_desc(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data __maybe_unused)
process_event_desc(struct feat_fd *ff, void *data __maybe_unused)
{
struct perf_session *session;
struct perf_evsel *evsel, *events = read_event_desc(ff->ph, ff->fd);
@ -1705,8 +1701,7 @@ process_event_desc(struct perf_file_section *section __maybe_unused,
return 0;
}
static int process_cmdline(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data __maybe_unused)
static int process_cmdline(struct feat_fd *ff, void *data __maybe_unused)
{
char *str, *cmdline = NULL, **argv = NULL;
u32 nr, i, len = 0;
@ -1716,7 +1711,7 @@ static int process_cmdline(struct perf_file_section *section __maybe_unused,
ff->ph->env.nr_cmdline = nr;
cmdline = zalloc(section->size + nr + 1);
cmdline = zalloc(ff->size + nr + 1);
if (!cmdline)
return -1;
@ -1744,8 +1739,7 @@ error:
return -1;
}
static int process_cpu_topology(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data __maybe_unused)
static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused)
{
u32 nr, i;
char *str;
@ -1802,7 +1796,7 @@ static int process_cpu_topology(struct perf_file_section *section __maybe_unused
* The header may be from old perf,
* which doesn't include core id and socket id information.
*/
if (section->size <= size) {
if (ff->size <= size) {
zfree(&ph->env.cpu);
return 0;
}
@ -1834,8 +1828,7 @@ free_cpu:
return -1;
}
static int process_numa_topology(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data __maybe_unused)
static int process_numa_topology(struct feat_fd *ff, void *data __maybe_unused)
{
struct numa_node *nodes, *n;
u32 nr, i;
@ -1881,8 +1874,7 @@ error:
return -1;
}
static int process_pmu_mappings(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data __maybe_unused)
static int process_pmu_mappings(struct feat_fd *ff, void *data __maybe_unused)
{
char *name;
u32 pmu_num;
@ -1929,8 +1921,7 @@ error:
return -1;
}
static int process_group_desc(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data __maybe_unused)
static int process_group_desc(struct feat_fd *ff, void *data __maybe_unused)
{
size_t ret = -1;
u32 i, nr, nr_groups;
@ -2014,23 +2005,21 @@ out_free:
return ret;
}
static int process_auxtrace(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data __maybe_unused)
static int process_auxtrace(struct feat_fd *ff, void *data __maybe_unused)
{
struct perf_session *session;
int err;
session = container_of(ff->ph, struct perf_session, header);
err = auxtrace_index__process(ff->fd, section->size, session,
err = auxtrace_index__process(ff->fd, ff->size, session,
ff->ph->needs_swap);
if (err < 0)
pr_err("Failed to process auxtrace index\n");
return err;
}
static int process_cache(struct perf_file_section *section __maybe_unused,
struct feat_fd *ff, void *data __maybe_unused)
static int process_cache(struct feat_fd *ff, void *data __maybe_unused)
{
struct cpu_cache_level *caches;
u32 cnt, i, version;
@ -2085,8 +2074,7 @@ out_free_caches:
struct feature_ops {
int (*write)(struct feat_fd *ff, struct perf_evlist *evlist);
void (*print)(struct feat_fd *ff, FILE *fp);
int (*process)(struct perf_file_section *section,
struct feat_fd *ff, void *data);
int (*process)(struct feat_fd *ff, void *data);
const char *name;
bool full_only;
};
@ -2617,9 +2605,11 @@ static int perf_file_section__process(struct perf_file_section *section,
struct perf_header *ph,
int feat, int fd, void *data)
{
struct feat_fd ff = {
struct feat_fd fdd = {
.fd = fd,
.ph = ph,
.size = section->size,
.offset = section->offset,
};
if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) {
@ -2636,7 +2626,7 @@ static int perf_file_section__process(struct perf_file_section *section,
if (!feat_ops[feat].process)
return 0;
return feat_ops[feat].process(section, &ff, data);
return feat_ops[feat].process(&fdd, data);
}
static int perf_file_header__read_pipe(struct perf_pipe_file_header *header,