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perf header: Use struct feat_fd in read header records

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As preparation for using header records in-pipe mode, replace int fd
with struct feat_fd ff in read functions for all header record types.

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/20170718042549.145161-11-davidcc@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
David Carrillo-Cisneros 2017-07-17 21:25:43 -07:00 committed by Arnaldo Carvalho de Melo
parent 6255245723
commit 48e5fcea38
1 changed files with 50 additions and 51 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

101
tools/perf/util/header.c
View File

@ -126,54 +126,54 @@ static int do_write_string(struct feat_fd *ff, const char *str)
return write_padded(ff, str, olen, len);
}
static int __do_read(int fd, void *addr, ssize_t size)
static int __do_read(struct feat_fd *ff, void *addr, ssize_t size)
{
ssize_t ret = readn(fd, addr, size);
ssize_t ret = readn(ff->fd, addr, size);
if (ret != size)
return ret < 0 ? (int)ret : -1;
return 0;
}
static int do_read_u32(int fd, struct perf_header *ph, u32 *addr)
static int do_read_u32(struct feat_fd *ff, u32 *addr)
{
int ret;
ret = __do_read(fd, addr, sizeof(*addr));
ret = __do_read(ff, addr, sizeof(*addr));
if (ret)
return ret;
if (ph->needs_swap)
if (ff->ph->needs_swap)
*addr = bswap_32(*addr);
return 0;
}
static int do_read_u64(int fd, struct perf_header *ph, u64 *addr)
static int do_read_u64(struct feat_fd *ff, u64 *addr)
{
int ret;
ret = __do_read(fd, addr, sizeof(*addr));
ret = __do_read(ff, addr, sizeof(*addr));
if (ret)
return ret;
if (ph->needs_swap)
if (ff->ph->needs_swap)
*addr = bswap_64(*addr);
return 0;
}
static char *do_read_string(int fd, struct perf_header *ph)
static char *do_read_string(struct feat_fd *ff)
{
u32 len;
char *buf;
if (do_read_u32(fd, ph, &len))
if (do_read_u32(ff, &len))
return NULL;
buf = malloc(len);
if (!buf)
return NULL;
if (!__do_read(fd, buf, len)) {
if (!__do_read(ff, buf, len)) {
/*
* strings are padded by zeroes
* thus the actual strlen of buf
@ -1208,8 +1208,7 @@ static void free_event_desc(struct perf_evsel *events)
free(events);
}
static struct perf_evsel *
read_event_desc(struct perf_header *ph, int fd)
static struct perf_evsel *read_event_desc(struct feat_fd *ff)
{
struct perf_evsel *evsel, *events = NULL;
u64 *id;
@ -1218,10 +1217,10 @@ read_event_desc(struct perf_header *ph, int fd)
size_t msz;
/* number of events */
if (do_read_u32(fd, ph, &nre))
if (do_read_u32(ff, &nre))
goto error;
if (do_read_u32(fd, ph, &sz))
if (do_read_u32(ff, &sz))
goto error;
/* buffer to hold on file attr struct */
@ -1245,21 +1244,21 @@ read_event_desc(struct perf_header *ph, int fd)
* must read entire on-file attr struct to
* sync up with layout.
*/
if (__do_read(fd, buf, sz))
if (__do_read(ff, buf, sz))
goto error;
if (ph->needs_swap)
if (ff->ph->needs_swap)
perf_event__attr_swap(buf);
memcpy(&evsel->attr, buf, msz);
if (do_read_u32(fd, ph, &nr))
if (do_read_u32(ff, &nr))
goto error;
if (ph->needs_swap)
if (ff->ph->needs_swap)
evsel->needs_swap = true;
evsel->name = do_read_string(fd, ph);
evsel->name = do_read_string(ff);
if (!evsel->name)
goto error;
@ -1273,7 +1272,7 @@ read_event_desc(struct perf_header *ph, int fd)
evsel->id = id;
for (j = 0 ; j < nr; j++) {
if (do_read_u64(fd, ph, id))
if (do_read_u64(ff, id))
goto error;
id++;
}
@ -1295,7 +1294,7 @@ static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val,
static void print_event_desc(struct feat_fd *ff, FILE *fp)
{
struct perf_evsel *evsel, *events = read_event_desc(ff->ph, ff->fd);
struct perf_evsel *evsel, *events = read_event_desc(ff);
u32 j;
u64 *id;
@ -1597,7 +1596,7 @@ static int perf_header__read_build_ids(struct perf_header *header,
#define FEAT_PROCESS_STR_FUN(__feat, __feat_env) \
static int process_##__feat(struct feat_fd *ff, void *data __maybe_unused) \
{\
ff->ph->env.__feat_env = do_read_string(ff->fd, ff->ph); \
ff->ph->env.__feat_env = do_read_string(ff); \
return ff->ph->env.__feat_env ? 0 : -ENOMEM; \
}
@ -1627,11 +1626,11 @@ static int process_nrcpus(struct feat_fd *ff, void *data __maybe_unused)
int ret;
u32 nr_cpus_avail, nr_cpus_online;
ret = do_read_u32(ff->fd, ff->ph, &nr_cpus_avail);
ret = do_read_u32(ff, &nr_cpus_avail);
if (ret)
return ret;
ret = do_read_u32(ff->fd, ff->ph, &nr_cpus_online);
ret = do_read_u32(ff, &nr_cpus_online);
if (ret)
return ret;
ff->ph->env.nr_cpus_avail = (int)nr_cpus_avail;
@ -1644,7 +1643,7 @@ static int process_total_mem(struct feat_fd *ff, void *data __maybe_unused)
u64 total_mem;
int ret;
ret = do_read_u64(ff->fd, ff->ph, &total_mem);
ret = do_read_u64(ff, &total_mem);
if (ret)
return -1;
ff->ph->env.total_mem = (unsigned long long)total_mem;
@ -1687,7 +1686,7 @@ static int
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);
struct perf_evsel *evsel, *events = read_event_desc(ff);
if (!events)
return 0;
@ -1706,7 +1705,7 @@ static int process_cmdline(struct feat_fd *ff, void *data __maybe_unused)
char *str, *cmdline = NULL, **argv = NULL;
u32 nr, i, len = 0;
if (do_read_u32(ff->fd, ff->ph, &nr))
if (do_read_u32(ff, &nr))
return -1;
ff->ph->env.nr_cmdline = nr;
@ -1720,7 +1719,7 @@ static int process_cmdline(struct feat_fd *ff, void *data __maybe_unused)
goto error;
for (i = 0; i < nr; i++) {
str = do_read_string(ff->fd, ff->ph);
str = do_read_string(ff);
if (!str)
goto error;
@ -1752,7 +1751,7 @@ static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused)
if (!ph->env.cpu)
return -1;
if (do_read_u32(ff->fd, ph, &nr))
if (do_read_u32(ff, &nr))
goto free_cpu;
ph->env.nr_sibling_cores = nr;
@ -1761,7 +1760,7 @@ static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused)
goto free_cpu;
for (i = 0; i < nr; i++) {
str = do_read_string(ff->fd, ph);
str = do_read_string(ff);
if (!str)
goto error;
@ -1773,14 +1772,14 @@ static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused)
}
ph->env.sibling_cores = strbuf_detach(&sb, NULL);
if (do_read_u32(ff->fd, ph, &nr))
if (do_read_u32(ff, &nr))
return -1;
ph->env.nr_sibling_threads = nr;
size += sizeof(u32);
for (i = 0; i < nr; i++) {
str = do_read_string(ff->fd, ph);
str = do_read_string(ff);
if (!str)
goto error;
@ -1802,12 +1801,12 @@ static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused)
}
for (i = 0; i < (u32)cpu_nr; i++) {
if (do_read_u32(ff->fd, ph, &nr))
if (do_read_u32(ff, &nr))
goto free_cpu;
ph->env.cpu[i].core_id = nr;
if (do_read_u32(ff->fd, ph, &nr))
if (do_read_u32(ff, &nr))
goto free_cpu;
if (nr != (u32)-1 && nr > (u32)cpu_nr) {
@ -1835,7 +1834,7 @@ static int process_numa_topology(struct feat_fd *ff, void *data __maybe_unused)
char *str;
/* nr nodes */
if (do_read_u32(ff->fd, ff->ph, &nr))
if (do_read_u32(ff, &nr))
return -1;
nodes = zalloc(sizeof(*nodes) * nr);
@ -1846,16 +1845,16 @@ static int process_numa_topology(struct feat_fd *ff, void *data __maybe_unused)
n = &nodes[i];
/* node number */
if (do_read_u32(ff->fd, ff->ph, &n->node))
if (do_read_u32(ff, &n->node))
goto error;
if (do_read_u64(ff->fd, ff->ph, &n->mem_total))
if (do_read_u64(ff, &n->mem_total))
goto error;
if (do_read_u64(ff->fd, ff->ph, &n->mem_free))
if (do_read_u64(ff, &n->mem_free))
goto error;
str = do_read_string(ff->fd, ff->ph);
str = do_read_string(ff);
if (!str)
goto error;
@ -1881,7 +1880,7 @@ static int process_pmu_mappings(struct feat_fd *ff, void *data __maybe_unused)
u32 type;
struct strbuf sb;
if (do_read_u32(ff->fd, ff->ph, &pmu_num))
if (do_read_u32(ff, &pmu_num))
return -1;
if (!pmu_num) {
@ -1894,10 +1893,10 @@ static int process_pmu_mappings(struct feat_fd *ff, void *data __maybe_unused)
return -1;
while (pmu_num) {
if (do_read_u32(ff->fd, ff->ph, &type))
if (do_read_u32(ff, &type))
goto error;
name = do_read_string(ff->fd, ff->ph);
name = do_read_string(ff);
if (!name)
goto error;
@ -1933,7 +1932,7 @@ static int process_group_desc(struct feat_fd *ff, void *data __maybe_unused)
u32 nr_members;
} *desc;
if (do_read_u32(ff->fd, ff->ph, &nr_groups))
if (do_read_u32(ff, &nr_groups))
return -1;
ff->ph->env.nr_groups = nr_groups;
@ -1947,14 +1946,14 @@ static int process_group_desc(struct feat_fd *ff, void *data __maybe_unused)
return -1;
for (i = 0; i < nr_groups; i++) {
desc[i].name = do_read_string(ff->fd, ff->ph);
desc[i].name = do_read_string(ff);
if (!desc[i].name)
goto out_free;
if (do_read_u32(ff->fd, ff->ph, &desc[i].leader_idx))
if (do_read_u32(ff, &desc[i].leader_idx))
goto out_free;
if (do_read_u32(ff->fd, ff->ph, &desc[i].nr_members))
if (do_read_u32(ff, &desc[i].nr_members))
goto out_free;
}
@ -2024,13 +2023,13 @@ static int process_cache(struct feat_fd *ff, void *data __maybe_unused)
struct cpu_cache_level *caches;
u32 cnt, i, version;
if (do_read_u32(ff->fd, ff->ph, &version))
if (do_read_u32(ff, &version))
return -1;
if (version != 1)
return -1;
if (do_read_u32(ff->fd, ff->ph, &cnt))
if (do_read_u32(ff, &cnt))
return -1;
caches = zalloc(sizeof(*caches) * cnt);
@ -2041,7 +2040,7 @@ static int process_cache(struct feat_fd *ff, void *data __maybe_unused)
struct cpu_cache_level c;
#define _R(v) \
if (do_read_u32(ff->fd, ff->ph, &c.v))\
if (do_read_u32(ff, &c.v))\
goto out_free_caches; \
_R(level)
@ -2051,7 +2050,7 @@ static int process_cache(struct feat_fd *ff, void *data __maybe_unused)
#undef _R
#define _R(v) \
c.v = do_read_string(ff->fd, ff->ph); \
c.v = do_read_string(ff); \
if (!c.v) \
goto out_free_caches;