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libperf: Adopt perf_mmap__mmap_len() function from tools/perf

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Move perf_mmap__mmap_len() from tools/perf wto libperf, it will be used
in the following patches. And rename the existing perf's function to
mmap__mmap_len().

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20191007125344.14268-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2019-10-07 14:53:11 +02:00 committed by Arnaldo Carvalho de Melo
parent e440979faf
commit bf59b3053e
5 changed files with 21 additions and 13 deletions
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4
tools/perf/builtin-record.c
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@ -276,7 +276,7 @@ static int record__aio_pushfn(struct mmap *map, void *to, void *buf, size_t size
if (record__comp_enabled(aio->rec)) {
size = zstd_compress(aio->rec->session, aio->data + aio->size,
perf_mmap__mmap_len(map) - aio->size,
mmap__mmap_len(map) - aio->size,
buf, size);
} else {
memcpy(aio->data + aio->size, buf, size);
@ -488,7 +488,7 @@ static int record__pushfn(struct mmap *map, void *to, void *bf, size_t size)
struct record *rec = to;
if (record__comp_enabled(rec)) {
size = zstd_compress(rec->session, map->data, perf_mmap__mmap_len(map), bf, size);
size = zstd_compress(rec->session, map->data, mmap__mmap_len(map), bf, size);
bf = map->data;
}

2
tools/perf/lib/include/internal/mmap.h
View File

@ -34,6 +34,8 @@ struct perf_mmap_param {
int mask;
};
size_t perf_mmap__mmap_len(struct perf_mmap *map);
void perf_mmap__init(struct perf_mmap *map, bool overwrite);
#endif /* __LIBPERF_INTERNAL_MMAP_H */

6
tools/perf/lib/mmap.c
View File

@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#include <internal/mmap.h>
#include <internal/lib.h>
void perf_mmap__init(struct perf_mmap *map, bool overwrite)
{
@ -7,3 +8,8 @@ void perf_mmap__init(struct perf_mmap *map, bool overwrite)
map->overwrite = overwrite;
refcount_set(&map->refcnt, 0);
}
size_t perf_mmap__mmap_len(struct perf_mmap *map)
{
return map->mask + 1 + page_size;
}

20
tools/perf/util/mmap.c
View File

@ -23,9 +23,9 @@
#include "../perf.h"
#include <internal/lib.h> /* page_size */
size_t perf_mmap__mmap_len(struct mmap *map)
size_t mmap__mmap_len(struct mmap *map)
{
return map->core.mask + 1 + page_size;
return perf_mmap__mmap_len(&map->core);
}
/* When check_messup is true, 'end' must points to a good entry */
@ -170,7 +170,7 @@ static int perf_mmap__aio_enabled(struct mmap *map)
#ifdef HAVE_LIBNUMA_SUPPORT
static int perf_mmap__aio_alloc(struct mmap *map, int idx)
{
map->aio.data[idx] = mmap(NULL, perf_mmap__mmap_len(map), PROT_READ|PROT_WRITE,
map->aio.data[idx] = mmap(NULL, mmap__mmap_len(map), PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
if (map->aio.data[idx] == MAP_FAILED) {
map->aio.data[idx] = NULL;
@ -183,7 +183,7 @@ static int perf_mmap__aio_alloc(struct mmap *map, int idx)
static void perf_mmap__aio_free(struct mmap *map, int idx)
{
if (map->aio.data[idx]) {
munmap(map->aio.data[idx], perf_mmap__mmap_len(map));
munmap(map->aio.data[idx], mmap__mmap_len(map));
map->aio.data[idx] = NULL;
}
}
@ -196,7 +196,7 @@ static int perf_mmap__aio_bind(struct mmap *map, int idx, int cpu, int affinity)
if (affinity != PERF_AFFINITY_SYS && cpu__max_node() > 1) {
data = map->aio.data[idx];
mmap_len = perf_mmap__mmap_len(map);
mmap_len = mmap__mmap_len(map);
node_mask = 1UL << cpu__get_node(cpu);
if (mbind(data, mmap_len, MPOL_BIND, &node_mask, 1, 0)) {
pr_err("Failed to bind [%p-%p] AIO buffer to node %d: error %m\n",
@ -210,7 +210,7 @@ static int perf_mmap__aio_bind(struct mmap *map, int idx, int cpu, int affinity)
#else /* !HAVE_LIBNUMA_SUPPORT */
static int perf_mmap__aio_alloc(struct mmap *map, int idx)
{
map->aio.data[idx] = malloc(perf_mmap__mmap_len(map));
map->aio.data[idx] = malloc(mmap__mmap_len(map));
if (map->aio.data[idx] == NULL)
return -1;
@ -315,11 +315,11 @@ void perf_mmap__munmap(struct mmap *map)
{
perf_mmap__aio_munmap(map);
if (map->data != NULL) {
munmap(map->data, perf_mmap__mmap_len(map));
munmap(map->data, mmap__mmap_len(map));
map->data = NULL;
}
if (map->core.base != NULL) {
munmap(map->core.base, perf_mmap__mmap_len(map));
munmap(map->core.base, mmap__mmap_len(map));
map->core.base = NULL;
map->core.fd = -1;
refcount_set(&map->core.refcnt, 0);
@ -371,7 +371,7 @@ int perf_mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, int cpu)
refcount_set(&map->core.refcnt, 2);
map->core.prev = 0;
map->core.mask = mp->core.mask;
map->core.base = mmap(NULL, perf_mmap__mmap_len(map), mp->core.prot,
map->core.base = mmap(NULL, mmap__mmap_len(map), mp->core.prot,
MAP_SHARED, fd, 0);
if (map->core.base == MAP_FAILED) {
pr_debug2("failed to mmap perf event ring buffer, error %d\n",
@ -389,7 +389,7 @@ int perf_mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, int cpu)
map->comp_level = mp->comp_level;
if (map->comp_level && !perf_mmap__aio_enabled(map)) {
map->data = mmap(NULL, perf_mmap__mmap_len(map), PROT_READ|PROT_WRITE,
map->data = mmap(NULL, mmap__mmap_len(map), PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
if (map->data == MAP_FAILED) {
pr_debug2("failed to mmap data buffer, error %d\n",

2
tools/perf/util/mmap.h
View File

@ -67,7 +67,7 @@ union perf_event *perf_mmap__read_event(struct mmap *map);
int perf_mmap__push(struct mmap *md, void *to,
int push(struct mmap *map, void *to, void *buf, size_t size));
size_t perf_mmap__mmap_len(struct mmap *map);
size_t mmap__mmap_len(struct mmap *map);
int perf_mmap__read_init(struct mmap *md);
void perf_mmap__read_done(struct mmap *map);