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Subject[PATCH 1/4] perf tools: Transform nodes string info to struct
Date
Storing NUMA info within struct numa_node instead
of strings. This way it's usable in future patches.

Also it turned out it's slightly less code involved
than using strings.

Link: http://lkml.kernel.org/n/tip-ka37sax3gfaxwvytfxi0ycy1@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/env.c | 5 +++-
tools/perf/util/env.h | 10 ++++++-
tools/perf/util/header.c | 76 +++++++++++++++++-------------------------------
3 files changed, 39 insertions(+), 52 deletions(-)

diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
index 49a11d9d8b8f..bb964e86b09d 100644
--- a/tools/perf/util/env.c
+++ b/tools/perf/util/env.c
@@ -18,10 +18,13 @@ void perf_env__exit(struct perf_env *env)
zfree(&env->cmdline_argv);
zfree(&env->sibling_cores);
zfree(&env->sibling_threads);
- zfree(&env->numa_nodes);
zfree(&env->pmu_mappings);
zfree(&env->cpu);

+ for (i = 0; i < env->nr_numa_nodes; i++)
+ cpu_map__put(env->numa_nodes[i].map);
+ zfree(&env->numa_nodes);
+
for (i = 0; i < env->caches_cnt; i++)
cpu_cache_level__free(&env->caches[i]);
zfree(&env->caches);
diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h
index 56cffb60a0b4..b164dfd2dcbf 100644
--- a/tools/perf/util/env.h
+++ b/tools/perf/util/env.h
@@ -2,6 +2,7 @@
#define __PERF_ENV_H

#include <linux/types.h>
+#include "cpumap.h"

struct cpu_topology_map {
int socket_id;
@@ -18,6 +19,13 @@ struct cpu_cache_level {
char *map;
};

+struct numa_node {
+ u32 node;
+ u64 mem_total;
+ u64 mem_free;
+ struct cpu_map *map;
+};
+
struct perf_env {
char *hostname;
char *os_release;
@@ -40,11 +48,11 @@ struct perf_env {
const char **cmdline_argv;
char *sibling_cores;
char *sibling_threads;
- char *numa_nodes;
char *pmu_mappings;
struct cpu_topology_map *cpu;
struct cpu_cache_level *caches;
int caches_cnt;
+ struct numa_node *numa_nodes;
};

extern struct perf_env perf_env;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index c5cd2698281f..8f0db4007282 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1306,42 +1306,19 @@ static void print_total_mem(struct perf_header *ph, int fd __maybe_unused,
static void print_numa_topology(struct perf_header *ph, int fd __maybe_unused,
FILE *fp)
{
- u32 nr, c, i;
- char *str, *tmp;
- uint64_t mem_total, mem_free;
-
- /* nr nodes */
- nr = ph->env.nr_numa_nodes;
- str = ph->env.numa_nodes;
-
- for (i = 0; i < nr; i++) {
- /* node number */
- c = strtoul(str, &tmp, 0);
- if (*tmp != ':')
- goto error;
-
- str = tmp + 1;
- mem_total = strtoull(str, &tmp, 0);
- if (*tmp != ':')
- goto error;
+ int i;
+ struct numa_node *n;

- str = tmp + 1;
- mem_free = strtoull(str, &tmp, 0);
- if (*tmp != ':')
- goto error;
+ for (i = 0; i < ph->env.nr_numa_nodes; i++) {
+ n = &ph->env.numa_nodes[i];

fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB,"
" free = %"PRIu64" kB\n",
- c, mem_total, mem_free);
+ n->node, n->mem_total, n->mem_free);

- str = tmp + 1;
- fprintf(fp, "# node%u cpu list : %s\n", c, str);
-
- str += strlen(str) + 1;
+ fprintf(fp, "# node%u cpu list : ", n->node);
+ cpu_map__fprintf(n->map, fp);
}
- return;
-error:
- fprintf(fp, "# numa topology : not available\n");
}

static void print_cpuid(struct perf_header *ph, int fd __maybe_unused, FILE *fp)
@@ -1906,11 +1883,10 @@ static int process_numa_topology(struct perf_file_section *section __maybe_unuse
struct perf_header *ph, int fd,
void *data __maybe_unused)
{
+ struct numa_node *nodes, *n;
ssize_t ret;
- u32 nr, node, i;
+ u32 nr, i;
char *str;
- uint64_t mem_total, mem_free;
- struct strbuf sb;

/* nr nodes */
ret = readn(fd, &nr, sizeof(nr));
@@ -1921,47 +1897,47 @@ static int process_numa_topology(struct perf_file_section *section __maybe_unuse
nr = bswap_32(nr);

ph->env.nr_numa_nodes = nr;
- if (strbuf_init(&sb, 256) < 0)
- return -1;
+ nodes = zalloc(sizeof(*nodes) * nr);
+ if (!nodes)
+ return -ENOMEM;

for (i = 0; i < nr; i++) {
+ n = &nodes[i];
+
/* node number */
- ret = readn(fd, &node, sizeof(node));
- if (ret != sizeof(node))
+ ret = readn(fd, &n->node, sizeof(u32));
+ if (ret != sizeof(n->node))
goto error;

- ret = readn(fd, &mem_total, sizeof(u64));
+ ret = readn(fd, &n->mem_total, sizeof(u64));
if (ret != sizeof(u64))
goto error;

- ret = readn(fd, &mem_free, sizeof(u64));
+ ret = readn(fd, &n->mem_free, sizeof(u64));
if (ret != sizeof(u64))
goto error;

if (ph->needs_swap) {
- node = bswap_32(node);
- mem_total = bswap_64(mem_total);
- mem_free = bswap_64(mem_free);
+ n->node = bswap_32(n->node);
+ n->mem_total = bswap_64(n->mem_total);
+ n->mem_free = bswap_64(n->mem_free);
}

- if (strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":",
- node, mem_total, mem_free) < 0)
- goto error;
-
str = do_read_string(fd, ph);
if (!str)
goto error;

- /* include a NULL character at the end */
- if (strbuf_add(&sb, str, strlen(str) + 1) < 0)
+ n->map = cpu_map__new(str);
+ if (!n->map)
goto error;
+
free(str);
}
- ph->env.numa_nodes = strbuf_detach(&sb, NULL);
+ ph->env.numa_nodes = nodes;
return 0;

error:
- strbuf_release(&sb);
+ free(nodes);
return -1;
}

--
2.4.11
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