#include "util/symbol.h"
#include "util/thread.h"
#include "util/header.h"
+#include "util/session.h"
#include "util/parse-options.h"
#include "util/trace-event.h"
#include "util/debug.h"
-#include "util/data_map.h"
#include <linux/rbtree.h>
static char const *input_name = "perf.data";
-static struct perf_header *header;
-static u64 sample_type;
-
static int alloc_flag;
static int caller_flag;
-sort_fn_t alloc_sort_fn;
-sort_fn_t caller_sort_fn;
-
static int alloc_lines = -1;
static int caller_lines = -1;
-static char *cwd;
-static int cwdlen;
+static bool raw_ip;
+
+static char default_sort_order[] = "frag,hit,bytes";
+
+static int *cpunode_map;
+static int max_cpu_num;
struct alloc_stat {
- union {
- struct {
- char *name;
- u64 call_site;
- };
- u64 ptr;
- };
+ u64 call_site;
+ u64 ptr;
u64 bytes_req;
u64 bytes_alloc;
u32 hit;
+ u32 pingpong;
+
+ short alloc_cpu;
struct rb_node node;
};
static struct rb_root root_caller_sorted;
static unsigned long total_requested, total_allocated;
+static unsigned long nr_allocs, nr_cross_allocs;
-struct raw_event_sample {
- u32 size;
- char data[0];
-};
+#define PATH_SYS_NODE "/sys/devices/system/node"
-static int
-process_comm_event(event_t *event, unsigned long offset, unsigned long head)
+static void init_cpunode_map(void)
{
- struct thread *thread = threads__findnew(event->comm.pid);
-
- dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n",
- (void *)(offset + head),
- (void *)(long)(event->header.size),
- event->comm.comm, event->comm.pid);
+ FILE *fp;
+ int i;
- if (thread == NULL ||
- thread__set_comm(thread, event->comm.comm)) {
- dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
- return -1;
+ fp = fopen("/sys/devices/system/cpu/kernel_max", "r");
+ if (!fp) {
+ max_cpu_num = 4096;
+ return;
}
- return 0;
+ if (fscanf(fp, "%d", &max_cpu_num) < 1)
+ die("Failed to read 'kernel_max' from sysfs");
+ max_cpu_num++;
+
+ cpunode_map = calloc(max_cpu_num, sizeof(int));
+ if (!cpunode_map)
+ die("calloc");
+ for (i = 0; i < max_cpu_num; i++)
+ cpunode_map[i] = -1;
+ fclose(fp);
}
-static void insert_alloc_stat(unsigned long ptr,
- int bytes_req, int bytes_alloc)
+static void setup_cpunode_map(void)
+{
+ struct dirent *dent1, *dent2;
+ DIR *dir1, *dir2;
+ unsigned int cpu, mem;
+ char buf[PATH_MAX];
+
+ init_cpunode_map();
+
+ dir1 = opendir(PATH_SYS_NODE);
+ if (!dir1)
+ return;
+
+ while ((dent1 = readdir(dir1)) != NULL) {
+ if (dent1->d_type != DT_DIR ||
+ sscanf(dent1->d_name, "node%u", &mem) < 1)
+ continue;
+
+ snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name);
+ dir2 = opendir(buf);
+ if (!dir2)
+ continue;
+ while ((dent2 = readdir(dir2)) != NULL) {
+ if (dent2->d_type != DT_LNK ||
+ sscanf(dent2->d_name, "cpu%u", &cpu) < 1)
+ continue;
+ cpunode_map[cpu] = mem;
+ }
+ }
+}
+
+static void insert_alloc_stat(unsigned long call_site, unsigned long ptr,
+ int bytes_req, int bytes_alloc, int cpu)
{
struct rb_node **node = &root_alloc_stat.rb_node;
struct rb_node *parent = NULL;
struct alloc_stat *data = NULL;
- if (!alloc_flag)
- return;
-
while (*node) {
parent = *node;
data = rb_entry(*node, struct alloc_stat, node);
if (data && data->ptr == ptr) {
data->hit++;
data->bytes_req += bytes_req;
- data->bytes_alloc += bytes_req;
+ data->bytes_alloc += bytes_alloc;
} else {
data = malloc(sizeof(*data));
+ if (!data)
+ die("malloc");
data->ptr = ptr;
+ data->pingpong = 0;
data->hit = 1;
data->bytes_req = bytes_req;
data->bytes_alloc = bytes_alloc;
rb_link_node(&data->node, parent, node);
rb_insert_color(&data->node, &root_alloc_stat);
}
+ data->call_site = call_site;
+ data->alloc_cpu = cpu;
}
static void insert_caller_stat(unsigned long call_site,
struct rb_node *parent = NULL;
struct alloc_stat *data = NULL;
- if (!caller_flag)
- return;
-
while (*node) {
parent = *node;
data = rb_entry(*node, struct alloc_stat, node);
if (data && data->call_site == call_site) {
data->hit++;
data->bytes_req += bytes_req;
- data->bytes_alloc += bytes_req;
+ data->bytes_alloc += bytes_alloc;
} else {
data = malloc(sizeof(*data));
+ if (!data)
+ die("malloc");
data->call_site = call_site;
+ data->pingpong = 0;
data->hit = 1;
data->bytes_req = bytes_req;
data->bytes_alloc = bytes_alloc;
}
}
-static void process_alloc_event(struct raw_event_sample *raw,
+static void process_alloc_event(void *data,
struct event *event,
- int cpu __used,
+ int cpu,
u64 timestamp __used,
struct thread *thread __used,
- int node __used)
+ int node)
{
unsigned long call_site;
unsigned long ptr;
int bytes_req;
int bytes_alloc;
+ int node1, node2;
- ptr = raw_field_value(event, "ptr", raw->data);
- call_site = raw_field_value(event, "call_site", raw->data);
- bytes_req = raw_field_value(event, "bytes_req", raw->data);
- bytes_alloc = raw_field_value(event, "bytes_alloc", raw->data);
+ ptr = raw_field_value(event, "ptr", data);
+ call_site = raw_field_value(event, "call_site", data);
+ bytes_req = raw_field_value(event, "bytes_req", data);
+ bytes_alloc = raw_field_value(event, "bytes_alloc", data);
- insert_alloc_stat(ptr, bytes_req, bytes_alloc);
+ insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, cpu);
insert_caller_stat(call_site, bytes_req, bytes_alloc);
total_requested += bytes_req;
total_allocated += bytes_alloc;
+
+ if (node) {
+ node1 = cpunode_map[cpu];
+ node2 = raw_field_value(event, "node", data);
+ if (node1 != node2)
+ nr_cross_allocs++;
+ }
+ nr_allocs++;
}
-static void process_free_event(struct raw_event_sample *raw __used,
- struct event *event __used,
- int cpu __used,
+static int ptr_cmp(struct alloc_stat *, struct alloc_stat *);
+static int callsite_cmp(struct alloc_stat *, struct alloc_stat *);
+
+static struct alloc_stat *search_alloc_stat(unsigned long ptr,
+ unsigned long call_site,
+ struct rb_root *root,
+ sort_fn_t sort_fn)
+{
+ struct rb_node *node = root->rb_node;
+ struct alloc_stat key = { .ptr = ptr, .call_site = call_site };
+
+ while (node) {
+ struct alloc_stat *data;
+ int cmp;
+
+ data = rb_entry(node, struct alloc_stat, node);
+
+ cmp = sort_fn(&key, data);
+ if (cmp < 0)
+ node = node->rb_left;
+ else if (cmp > 0)
+ node = node->rb_right;
+ else
+ return data;
+ }
+ return NULL;
+}
+
+static void process_free_event(void *data,
+ struct event *event,
+ int cpu,
u64 timestamp __used,
struct thread *thread __used)
{
+ unsigned long ptr;
+ struct alloc_stat *s_alloc, *s_caller;
+
+ ptr = raw_field_value(event, "ptr", data);
+
+ s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp);
+ if (!s_alloc)
+ return;
+
+ if (cpu != s_alloc->alloc_cpu) {
+ s_alloc->pingpong++;
+
+ s_caller = search_alloc_stat(0, s_alloc->call_site,
+ &root_caller_stat, callsite_cmp);
+ assert(s_caller);
+ s_caller->pingpong++;
+ }
+ s_alloc->alloc_cpu = -1;
}
static void
-process_raw_event(event_t *raw_event __used, void *more_data,
+process_raw_event(event_t *raw_event __used, void *data,
int cpu, u64 timestamp, struct thread *thread)
{
- struct raw_event_sample *raw = more_data;
struct event *event;
int type;
- type = trace_parse_common_type(raw->data);
+ type = trace_parse_common_type(data);
event = trace_find_event(type);
if (!strcmp(event->name, "kmalloc") ||
!strcmp(event->name, "kmem_cache_alloc")) {
- process_alloc_event(raw, event, cpu, timestamp, thread, 0);
+ process_alloc_event(data, event, cpu, timestamp, thread, 0);
return;
}
if (!strcmp(event->name, "kmalloc_node") ||
!strcmp(event->name, "kmem_cache_alloc_node")) {
- process_alloc_event(raw, event, cpu, timestamp, thread, 1);
+ process_alloc_event(data, event, cpu, timestamp, thread, 1);
return;
}
if (!strcmp(event->name, "kfree") ||
!strcmp(event->name, "kmem_cache_free")) {
- process_free_event(raw, event, cpu, timestamp, thread);
+ process_free_event(data, event, cpu, timestamp, thread);
return;
}
}
-static int
-process_sample_event(event_t *event, unsigned long offset, unsigned long head)
+static int process_sample_event(event_t *event, struct perf_session *session)
{
- u64 ip = event->ip.ip;
- u64 timestamp = -1;
- u32 cpu = -1;
- u64 period = 1;
- void *more_data = event->ip.__more_data;
- struct thread *thread = threads__findnew(event->ip.pid);
-
- if (sample_type & PERF_SAMPLE_TIME) {
- timestamp = *(u64 *)more_data;
- more_data += sizeof(u64);
- }
+ struct sample_data data;
+ struct thread *thread;
- if (sample_type & PERF_SAMPLE_CPU) {
- cpu = *(u32 *)more_data;
- more_data += sizeof(u32);
- more_data += sizeof(u32); /* reserved */
- }
+ memset(&data, 0, sizeof(data));
+ data.time = -1;
+ data.cpu = -1;
+ data.period = 1;
- if (sample_type & PERF_SAMPLE_PERIOD) {
- period = *(u64 *)more_data;
- more_data += sizeof(u64);
- }
+ event__parse_sample(event, session->sample_type, &data);
- dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
- (void *)(offset + head),
- (void *)(long)(event->header.size),
- event->header.misc,
- event->ip.pid, event->ip.tid,
- (void *)(long)ip,
- (long long)period);
+ dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld\n", event->header.misc,
+ data.pid, data.tid, data.ip, data.period);
+ thread = perf_session__findnew(session, event->ip.pid);
if (thread == NULL) {
pr_debug("problem processing %d event, skipping it.\n",
event->header.type);
dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
- process_raw_event(event, more_data, cpu, timestamp, thread);
+ process_raw_event(event, data.raw_data, data.cpu,
+ data.time, thread);
return 0;
}
-static int sample_type_check(u64 type)
-{
- sample_type = type;
-
- if (!(sample_type & PERF_SAMPLE_RAW)) {
- fprintf(stderr,
- "No trace sample to read. Did you call perf record "
- "without -R?");
- return -1;
- }
-
- return 0;
-}
-
-static struct perf_file_handler file_handler = {
- .process_sample_event = process_sample_event,
- .process_comm_event = process_comm_event,
- .sample_type_check = sample_type_check,
+static struct perf_event_ops event_ops = {
+ .sample = process_sample_event,
+ .comm = event__process_comm,
+ .ordered_samples = true,
};
-static int read_events(void)
-{
- register_idle_thread();
- register_perf_file_handler(&file_handler);
-
- return mmap_dispatch_perf_file(&header, input_name, 0, 0,
- &cwdlen, &cwd);
-}
-
static double fragmentation(unsigned long n_req, unsigned long n_alloc)
{
if (n_alloc == 0)
return 100.0 - (100.0 * n_req / n_alloc);
}
-static void __print_result(struct rb_root *root, int n_lines, int is_caller)
+static void __print_result(struct rb_root *root, struct perf_session *session,
+ int n_lines, int is_caller)
{
struct rb_node *next;
+ struct machine *machine;
- printf("\n ------------------------------------------------------------------------------\n");
- if (is_caller)
- printf(" Callsite |");
- else
- printf(" Alloc Ptr |");
- printf(" Total_alloc/Per | Total_req/Per | Hit | Fragmentation\n");
- printf(" ------------------------------------------------------------------------------\n");
+ printf("%.102s\n", graph_dotted_line);
+ printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr");
+ printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n");
+ printf("%.102s\n", graph_dotted_line);
next = rb_first(root);
+ machine = perf_session__find_host_machine(session);
+ if (!machine) {
+ pr_err("__print_result: couldn't find kernel information\n");
+ return;
+ }
while (next && n_lines--) {
- struct alloc_stat *data;
-
- data = rb_entry(next, struct alloc_stat, node);
+ struct alloc_stat *data = rb_entry(next, struct alloc_stat,
+ node);
+ struct symbol *sym = NULL;
+ struct map *map;
+ char buf[BUFSIZ];
+ u64 addr;
+
+ if (is_caller) {
+ addr = data->call_site;
+ if (!raw_ip)
+ sym = machine__find_kernel_function(machine, addr, &map, NULL);
+ } else
+ addr = data->ptr;
+
+ if (sym != NULL)
+ snprintf(buf, sizeof(buf), "%s+%Lx", sym->name,
+ addr - map->unmap_ip(map, sym->start));
+ else
+ snprintf(buf, sizeof(buf), "%#Lx", addr);
+ printf(" %-34s |", buf);
- printf(" %-16p | %8llu/%-6lu | %8llu/%-6lu | %6lu | %8.3f%%\n",
- is_caller ? (void *)(unsigned long)data->call_site :
- (void *)(unsigned long)data->ptr,
+ printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n",
(unsigned long long)data->bytes_alloc,
(unsigned long)data->bytes_alloc / data->hit,
(unsigned long long)data->bytes_req,
(unsigned long)data->bytes_req / data->hit,
(unsigned long)data->hit,
+ (unsigned long)data->pingpong,
fragmentation(data->bytes_req, data->bytes_alloc));
next = rb_next(next);
}
if (n_lines == -1)
- printf(" ... | ... | ... | ... | ... \n");
+ printf(" ... | ... | ... | ... | ... | ... \n");
- printf(" ------------------------------------------------------------------------------\n");
+ printf("%.102s\n", graph_dotted_line);
}
static void print_summary(void)
total_allocated - total_requested);
printf("Internal fragmentation: %f%%\n",
fragmentation(total_requested, total_allocated));
+ printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs);
}
-static void print_result(void)
+static void print_result(struct perf_session *session)
{
if (caller_flag)
- __print_result(&root_caller_sorted, caller_lines, 1);
+ __print_result(&root_caller_sorted, session, caller_lines, 1);
if (alloc_flag)
- __print_result(&root_alloc_sorted, alloc_lines, 0);
+ __print_result(&root_alloc_sorted, session, alloc_lines, 0);
print_summary();
}
+struct sort_dimension {
+ const char name[20];
+ sort_fn_t cmp;
+ struct list_head list;
+};
+
+static LIST_HEAD(caller_sort);
+static LIST_HEAD(alloc_sort);
+
static void sort_insert(struct rb_root *root, struct alloc_stat *data,
- sort_fn_t sort_fn)
+ struct list_head *sort_list)
{
struct rb_node **new = &(root->rb_node);
struct rb_node *parent = NULL;
+ struct sort_dimension *sort;
while (*new) {
struct alloc_stat *this;
- int cmp;
+ int cmp = 0;
this = rb_entry(*new, struct alloc_stat, node);
parent = *new;
- cmp = sort_fn(data, this);
+ list_for_each_entry(sort, sort_list, list) {
+ cmp = sort->cmp(data, this);
+ if (cmp)
+ break;
+ }
if (cmp > 0)
new = &((*new)->rb_left);
}
static void __sort_result(struct rb_root *root, struct rb_root *root_sorted,
- sort_fn_t sort_fn)
+ struct list_head *sort_list)
{
struct rb_node *node;
struct alloc_stat *data;
rb_erase(node, root);
data = rb_entry(node, struct alloc_stat, node);
- sort_insert(root_sorted, data, sort_fn);
+ sort_insert(root_sorted, data, sort_list);
}
}
static void sort_result(void)
{
- __sort_result(&root_alloc_stat, &root_alloc_sorted, alloc_sort_fn);
- __sort_result(&root_caller_stat, &root_caller_sorted, caller_sort_fn);
+ __sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort);
+ __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort);
}
static int __cmd_kmem(void)
{
+ int err = -EINVAL;
+ struct perf_session *session = perf_session__new(input_name, O_RDONLY, 0, false);
+ if (session == NULL)
+ return -ENOMEM;
+
+ if (perf_session__create_kernel_maps(session) < 0)
+ goto out_delete;
+
+ if (!perf_session__has_traces(session, "kmem record"))
+ goto out_delete;
+
setup_pager();
- read_events();
+ err = perf_session__process_events(session, &event_ops);
+ if (err != 0)
+ goto out_delete;
sort_result();
- print_result();
-
- return 0;
+ print_result(session);
+out_delete:
+ perf_session__delete(session);
+ return err;
}
static const char * const kmem_usage[] = {
- "perf kmem [<options>] {record}",
+ "perf kmem [<options>] {record|stat}",
NULL
};
-
static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r)
{
if (l->ptr < r->ptr)
return 0;
}
+static struct sort_dimension ptr_sort_dimension = {
+ .name = "ptr",
+ .cmp = ptr_cmp,
+};
+
static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r)
{
if (l->call_site < r->call_site)
return 0;
}
+static struct sort_dimension callsite_sort_dimension = {
+ .name = "callsite",
+ .cmp = callsite_cmp,
+};
+
+static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r)
+{
+ if (l->hit < r->hit)
+ return -1;
+ else if (l->hit > r->hit)
+ return 1;
+ return 0;
+}
+
+static struct sort_dimension hit_sort_dimension = {
+ .name = "hit",
+ .cmp = hit_cmp,
+};
+
static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r)
{
if (l->bytes_alloc < r->bytes_alloc)
return 0;
}
-static int parse_sort_opt(const struct option *opt __used,
- const char *arg, int unset __used)
+static struct sort_dimension bytes_sort_dimension = {
+ .name = "bytes",
+ .cmp = bytes_cmp,
+};
+
+static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r)
{
- sort_fn_t sort_fn;
+ double x, y;
- if (!arg)
+ x = fragmentation(l->bytes_req, l->bytes_alloc);
+ y = fragmentation(r->bytes_req, r->bytes_alloc);
+
+ if (x < y)
return -1;
+ else if (x > y)
+ return 1;
+ return 0;
+}
- if (strcmp(arg, "ptr") == 0)
- sort_fn = ptr_cmp;
- else if (strcmp(arg, "call_site") == 0)
- sort_fn = callsite_cmp;
- else if (strcmp(arg, "bytes") == 0)
- sort_fn = bytes_cmp;
- else
+static struct sort_dimension frag_sort_dimension = {
+ .name = "frag",
+ .cmp = frag_cmp,
+};
+
+static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r)
+{
+ if (l->pingpong < r->pingpong)
return -1;
+ else if (l->pingpong > r->pingpong)
+ return 1;
+ return 0;
+}
- if (caller_flag > alloc_flag)
- caller_sort_fn = sort_fn;
- else
- alloc_sort_fn = sort_fn;
+static struct sort_dimension pingpong_sort_dimension = {
+ .name = "pingpong",
+ .cmp = pingpong_cmp,
+};
+
+static struct sort_dimension *avail_sorts[] = {
+ &ptr_sort_dimension,
+ &callsite_sort_dimension,
+ &hit_sort_dimension,
+ &bytes_sort_dimension,
+ &frag_sort_dimension,
+ &pingpong_sort_dimension,
+};
+
+#define NUM_AVAIL_SORTS \
+ (int)(sizeof(avail_sorts) / sizeof(struct sort_dimension *))
+
+static int sort_dimension__add(const char *tok, struct list_head *list)
+{
+ struct sort_dimension *sort;
+ int i;
+
+ for (i = 0; i < NUM_AVAIL_SORTS; i++) {
+ if (!strcmp(avail_sorts[i]->name, tok)) {
+ sort = malloc(sizeof(*sort));
+ if (!sort)
+ die("malloc");
+ memcpy(sort, avail_sorts[i], sizeof(*sort));
+ list_add_tail(&sort->list, list);
+ return 0;
+ }
+ }
+
+ return -1;
+}
+static int setup_sorting(struct list_head *sort_list, const char *arg)
+{
+ char *tok;
+ char *str = strdup(arg);
+
+ if (!str)
+ die("strdup");
+
+ while (true) {
+ tok = strsep(&str, ",");
+ if (!tok)
+ break;
+ if (sort_dimension__add(tok, sort_list) < 0) {
+ error("Unknown --sort key: '%s'", tok);
+ return -1;
+ }
+ }
+
+ free(str);
return 0;
}
-static int parse_stat_opt(const struct option *opt __used,
+static int parse_sort_opt(const struct option *opt __used,
const char *arg, int unset __used)
{
if (!arg)
return -1;
- if (strcmp(arg, "alloc") == 0)
- alloc_flag = (caller_flag + 1);
- else if (strcmp(arg, "caller") == 0)
- caller_flag = (alloc_flag + 1);
+ if (caller_flag > alloc_flag)
+ return setup_sorting(&caller_sort, arg);
else
- return -1;
+ return setup_sorting(&alloc_sort, arg);
+
+ return 0;
+}
+
+static int parse_caller_opt(const struct option *opt __used,
+ const char *arg __used, int unset __used)
+{
+ caller_flag = (alloc_flag + 1);
+ return 0;
+}
+
+static int parse_alloc_opt(const struct option *opt __used,
+ const char *arg __used, int unset __used)
+{
+ alloc_flag = (caller_flag + 1);
return 0;
}
static const struct option kmem_options[] = {
OPT_STRING('i', "input", &input_name, "file",
"input file name"),
- OPT_CALLBACK(0, "stat", NULL, "<alloc>|<caller>",
- "stat selector, Pass 'alloc' or 'caller'.",
- parse_stat_opt),
- OPT_CALLBACK('s', "sort", NULL, "key",
- "sort by key: ptr, call_site, hit, bytes",
+ OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL,
+ "show per-callsite statistics",
+ parse_caller_opt),
+ OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL,
+ "show per-allocation statistics",
+ parse_alloc_opt),
+ OPT_CALLBACK('s', "sort", NULL, "key[,key2...]",
+ "sort by keys: ptr, call_site, bytes, hit, pingpong, frag",
parse_sort_opt),
OPT_CALLBACK('l', "line", NULL, "num",
- "show n lins",
+ "show n lines",
parse_line_opt),
+ OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"),
OPT_END()
};
"record",
"-a",
"-R",
- "-M",
"-f",
"-c", "1",
"-e", "kmem:kmalloc",
int cmd_kmem(int argc, const char **argv, const char *prefix __used)
{
- symbol__init(0);
-
argc = parse_options(argc, argv, kmem_options, kmem_usage, 0);
- if (argc && !strncmp(argv[0], "rec", 3))
- return __cmd_record(argc, argv);
- else if (argc)
+ if (!argc)
usage_with_options(kmem_usage, kmem_options);
- if (!alloc_sort_fn)
- alloc_sort_fn = bytes_cmp;
- if (!caller_sort_fn)
- caller_sort_fn = bytes_cmp;
+ symbol__init();
+
+ if (!strncmp(argv[0], "rec", 3)) {
+ return __cmd_record(argc, argv);
+ } else if (!strcmp(argv[0], "stat")) {
+ setup_cpunode_map();
+
+ if (list_empty(&caller_sort))
+ setup_sorting(&caller_sort, default_sort_order);
+ if (list_empty(&alloc_sort))
+ setup_sorting(&alloc_sort, default_sort_order);
+
+ return __cmd_kmem();
+ } else
+ usage_with_options(kmem_usage, kmem_options);
- return __cmd_kmem();
+ return 0;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff