Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 22:51:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

perf record: Bind the AIO user space buffers to nodes

Browse Source 
Allocate and bind AIO user space buffers to the memory nodes that mmap
kernel buffers are bound to.

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5a5adebc-afe0-4806-81cd-180d49ec043f@linux.intel.com
[ Do not use 'index' as a variable name, it is a define in older glibcs ]
Link: http://lkml.kernel.org/r/20190205151526.GC10613@kernel.org
[ Add -lnuma to the python build when -DHAVE_LIBNUMA_SUPPORT is present, fixing 'perf test python' ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Alexey Budankov 2019-01-22 20:48:54 +03:00 committed by Arnaldo Carvalho de Melo
parent 9d2ed64587
commit c44a8b44ca
2 changed files with 78 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

77
tools/perf/util/mmap.c
View File

@ -10,6 +10,9 @@
#include <sys/mman.h>
#include <inttypes.h>
#include <asm/bug.h>
#ifdef HAVE_LIBNUMA_SUPPORT
#include <numaif.h>
#endif
#include "debug.h"
#include "event.h"
#include "mmap.h"
@ -154,9 +157,72 @@ void __weak auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp __mayb
}
#ifdef HAVE_AIO_SUPPORT
#ifdef HAVE_LIBNUMA_SUPPORT
static int perf_mmap__aio_alloc(struct perf_mmap *map, int idx)
{
map->aio.data[idx] = mmap(NULL, perf_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;
return -1;
}
return 0;
}
static void perf_mmap__aio_free(struct perf_mmap *map, int idx)
{
if (map->aio.data[idx]) {
munmap(map->aio.data[idx], perf_mmap__mmap_len(map));
map->aio.data[idx] = NULL;
}
}
static int perf_mmap__aio_bind(struct perf_mmap *map, int idx, int cpu, int affinity)
{
void *data;
size_t mmap_len;
unsigned long node_mask;
if (affinity != PERF_AFFINITY_SYS && cpu__max_node() > 1) {
data = map->aio.data[idx];
mmap_len = perf_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",
data, data + mmap_len, cpu__get_node(cpu));
return -1;
}
}
return 0;
}
#else
static int perf_mmap__aio_alloc(struct perf_mmap *map, int idx)
{
map->aio.data[idx] = malloc(perf_mmap__mmap_len(map));
if (map->aio.data[idx] == NULL)
return -1;
return 0;
}
static void perf_mmap__aio_free(struct perf_mmap *map, int idx)
{
zfree(&(map->aio.data[idx]));
}
static int perf_mmap__aio_bind(struct perf_mmap *map __maybe_unused, int idx __maybe_unused,
int cpu __maybe_unused, int affinity __maybe_unused)
{
return 0;
}
#endif
static int perf_mmap__aio_mmap(struct perf_mmap *map, struct mmap_params *mp)
{
int delta_max, i, prio;
int delta_max, i, prio, ret;
map->aio.nr_cblocks = mp->nr_cblocks;
if (map->aio.nr_cblocks) {
@ -177,11 +243,14 @@ static int perf_mmap__aio_mmap(struct perf_mmap *map, struct mmap_params *mp)
}
delta_max = sysconf(_SC_AIO_PRIO_DELTA_MAX);
for (i = 0; i < map->aio.nr_cblocks; ++i) {
map->aio.data[i] = malloc(perf_mmap__mmap_len(map));
if (!map->aio.data[i]) {
ret = perf_mmap__aio_alloc(map, i);
if (ret == -1) {
pr_debug2("failed to allocate data buffer area, error %m");
return -1;
}
ret = perf_mmap__aio_bind(map, i, map->cpu, mp->affinity);
if (ret == -1)
return -1;
/*
* Use cblock.aio_fildes value different from -1
* to denote started aio write operation on the
@ -210,7 +279,7 @@ static void perf_mmap__aio_munmap(struct perf_mmap *map)
int i;
for (i = 0; i < map->aio.nr_cblocks; ++i)
zfree(&map->aio.data[i]);
perf_mmap__aio_free(map, i);
if (map->aio.data)
zfree(&map->aio.data);
zfree(&map->aio.cblocks);

5
tools/perf/util/setup.py
View File

@ -53,9 +53,14 @@ ext_sources = [f.strip() for f in open('util/python-ext-sources')
# use full paths with source files
ext_sources = list(map(lambda x: '%s/%s' % (src_perf, x) , ext_sources))
extra_libraries = []
if '-DHAVE_LIBNUMA_SUPPORT' in cflags:
extra_libraries = [ 'numa' ]
perf = Extension('perf',
sources = ext_sources,
include_dirs = ['util/include'],
libraries = extra_libraries,
extra_compile_args = cflags,
extra_objects = [libtraceevent, libapikfs],
)