blob: 924a9518931ade8eb51e17eb36fc38024c556c79 [file] [log] [blame]
Li Zefanba77c9e2009-11-20 15:53:25 +08001#include "builtin.h"
2#include "perf.h"
3
4#include "util/util.h"
5#include "util/cache.h"
6#include "util/symbol.h"
7#include "util/thread.h"
8#include "util/header.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02009#include "util/session.h"
Li Zefanba77c9e2009-11-20 15:53:25 +080010
11#include "util/parse-options.h"
12#include "util/trace-event.h"
13
14#include "util/debug.h"
Li Zefanba77c9e2009-11-20 15:53:25 +080015
16#include <linux/rbtree.h>
17
18struct alloc_stat;
19typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *);
20
21static char const *input_name = "perf.data";
22
Li Zefanba77c9e2009-11-20 15:53:25 +080023static int alloc_flag;
24static int caller_flag;
25
Li Zefanba77c9e2009-11-20 15:53:25 +080026static int alloc_lines = -1;
27static int caller_lines = -1;
28
Li Zefan7707b6b2009-11-24 13:25:48 +080029static bool raw_ip;
30
Li Zefan29b3e152009-11-24 13:26:10 +080031static char default_sort_order[] = "frag,hit,bytes";
32
Li Zefan7d0d3942009-11-24 13:26:31 +080033static int *cpunode_map;
34static int max_cpu_num;
35
Li Zefanba77c9e2009-11-20 15:53:25 +080036struct alloc_stat {
Li Zefan079d3f62009-11-24 13:26:55 +080037 u64 call_site;
38 u64 ptr;
Li Zefanba77c9e2009-11-20 15:53:25 +080039 u64 bytes_req;
40 u64 bytes_alloc;
41 u32 hit;
Li Zefan079d3f62009-11-24 13:26:55 +080042 u32 pingpong;
43
44 short alloc_cpu;
Li Zefanba77c9e2009-11-20 15:53:25 +080045
46 struct rb_node node;
47};
48
49static struct rb_root root_alloc_stat;
50static struct rb_root root_alloc_sorted;
51static struct rb_root root_caller_stat;
52static struct rb_root root_caller_sorted;
53
54static unsigned long total_requested, total_allocated;
Li Zefan7d0d3942009-11-24 13:26:31 +080055static unsigned long nr_allocs, nr_cross_allocs;
Li Zefanba77c9e2009-11-20 15:53:25 +080056
Li Zefan7d0d3942009-11-24 13:26:31 +080057#define PATH_SYS_NODE "/sys/devices/system/node"
58
59static void init_cpunode_map(void)
60{
61 FILE *fp;
62 int i;
63
64 fp = fopen("/sys/devices/system/cpu/kernel_max", "r");
65 if (!fp) {
66 max_cpu_num = 4096;
67 return;
68 }
69
70 if (fscanf(fp, "%d", &max_cpu_num) < 1)
71 die("Failed to read 'kernel_max' from sysfs");
72 max_cpu_num++;
73
74 cpunode_map = calloc(max_cpu_num, sizeof(int));
75 if (!cpunode_map)
76 die("calloc");
77 for (i = 0; i < max_cpu_num; i++)
78 cpunode_map[i] = -1;
79 fclose(fp);
80}
81
82static void setup_cpunode_map(void)
83{
84 struct dirent *dent1, *dent2;
85 DIR *dir1, *dir2;
86 unsigned int cpu, mem;
87 char buf[PATH_MAX];
88
89 init_cpunode_map();
90
91 dir1 = opendir(PATH_SYS_NODE);
92 if (!dir1)
93 return;
94
Ulrich Drepper659d8cf2009-12-19 16:40:28 -050095 while ((dent1 = readdir(dir1)) != NULL) {
96 if (dent1->d_type != DT_DIR ||
97 sscanf(dent1->d_name, "node%u", &mem) < 1)
Li Zefan7d0d3942009-11-24 13:26:31 +080098 continue;
99
100 snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name);
101 dir2 = opendir(buf);
102 if (!dir2)
103 continue;
Ulrich Drepper659d8cf2009-12-19 16:40:28 -0500104 while ((dent2 = readdir(dir2)) != NULL) {
105 if (dent2->d_type != DT_LNK ||
106 sscanf(dent2->d_name, "cpu%u", &cpu) < 1)
Li Zefan7d0d3942009-11-24 13:26:31 +0800107 continue;
108 cpunode_map[cpu] = mem;
109 }
110 }
111}
112
Li Zefan079d3f62009-11-24 13:26:55 +0800113static void insert_alloc_stat(unsigned long call_site, unsigned long ptr,
114 int bytes_req, int bytes_alloc, int cpu)
Li Zefanba77c9e2009-11-20 15:53:25 +0800115{
116 struct rb_node **node = &root_alloc_stat.rb_node;
117 struct rb_node *parent = NULL;
118 struct alloc_stat *data = NULL;
119
Li Zefanba77c9e2009-11-20 15:53:25 +0800120 while (*node) {
121 parent = *node;
122 data = rb_entry(*node, struct alloc_stat, node);
123
124 if (ptr > data->ptr)
125 node = &(*node)->rb_right;
126 else if (ptr < data->ptr)
127 node = &(*node)->rb_left;
128 else
129 break;
130 }
131
132 if (data && data->ptr == ptr) {
133 data->hit++;
134 data->bytes_req += bytes_req;
Wenji Huang4efb5292009-12-21 17:52:55 +0800135 data->bytes_alloc += bytes_alloc;
Li Zefanba77c9e2009-11-20 15:53:25 +0800136 } else {
137 data = malloc(sizeof(*data));
Li Zefan079d3f62009-11-24 13:26:55 +0800138 if (!data)
139 die("malloc");
Li Zefanba77c9e2009-11-20 15:53:25 +0800140 data->ptr = ptr;
Li Zefan079d3f62009-11-24 13:26:55 +0800141 data->pingpong = 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800142 data->hit = 1;
143 data->bytes_req = bytes_req;
144 data->bytes_alloc = bytes_alloc;
145
146 rb_link_node(&data->node, parent, node);
147 rb_insert_color(&data->node, &root_alloc_stat);
148 }
Li Zefan079d3f62009-11-24 13:26:55 +0800149 data->call_site = call_site;
150 data->alloc_cpu = cpu;
Li Zefanba77c9e2009-11-20 15:53:25 +0800151}
152
153static void insert_caller_stat(unsigned long call_site,
154 int bytes_req, int bytes_alloc)
155{
156 struct rb_node **node = &root_caller_stat.rb_node;
157 struct rb_node *parent = NULL;
158 struct alloc_stat *data = NULL;
159
Li Zefanba77c9e2009-11-20 15:53:25 +0800160 while (*node) {
161 parent = *node;
162 data = rb_entry(*node, struct alloc_stat, node);
163
164 if (call_site > data->call_site)
165 node = &(*node)->rb_right;
166 else if (call_site < data->call_site)
167 node = &(*node)->rb_left;
168 else
169 break;
170 }
171
172 if (data && data->call_site == call_site) {
173 data->hit++;
174 data->bytes_req += bytes_req;
Wenji Huang4efb5292009-12-21 17:52:55 +0800175 data->bytes_alloc += bytes_alloc;
Li Zefanba77c9e2009-11-20 15:53:25 +0800176 } else {
177 data = malloc(sizeof(*data));
Li Zefan079d3f62009-11-24 13:26:55 +0800178 if (!data)
179 die("malloc");
Li Zefanba77c9e2009-11-20 15:53:25 +0800180 data->call_site = call_site;
Li Zefan079d3f62009-11-24 13:26:55 +0800181 data->pingpong = 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800182 data->hit = 1;
183 data->bytes_req = bytes_req;
184 data->bytes_alloc = bytes_alloc;
185
186 rb_link_node(&data->node, parent, node);
187 rb_insert_color(&data->node, &root_caller_stat);
188 }
189}
190
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800191static void process_alloc_event(void *data,
Li Zefanba77c9e2009-11-20 15:53:25 +0800192 struct event *event,
Li Zefan7d0d3942009-11-24 13:26:31 +0800193 int cpu,
Li Zefanba77c9e2009-11-20 15:53:25 +0800194 u64 timestamp __used,
195 struct thread *thread __used,
Li Zefan7d0d3942009-11-24 13:26:31 +0800196 int node)
Li Zefanba77c9e2009-11-20 15:53:25 +0800197{
198 unsigned long call_site;
199 unsigned long ptr;
200 int bytes_req;
201 int bytes_alloc;
Li Zefan7d0d3942009-11-24 13:26:31 +0800202 int node1, node2;
Li Zefanba77c9e2009-11-20 15:53:25 +0800203
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800204 ptr = raw_field_value(event, "ptr", data);
205 call_site = raw_field_value(event, "call_site", data);
206 bytes_req = raw_field_value(event, "bytes_req", data);
207 bytes_alloc = raw_field_value(event, "bytes_alloc", data);
Li Zefanba77c9e2009-11-20 15:53:25 +0800208
Li Zefan079d3f62009-11-24 13:26:55 +0800209 insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, cpu);
Li Zefanba77c9e2009-11-20 15:53:25 +0800210 insert_caller_stat(call_site, bytes_req, bytes_alloc);
211
212 total_requested += bytes_req;
213 total_allocated += bytes_alloc;
Li Zefan7d0d3942009-11-24 13:26:31 +0800214
215 if (node) {
216 node1 = cpunode_map[cpu];
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800217 node2 = raw_field_value(event, "node", data);
Li Zefan7d0d3942009-11-24 13:26:31 +0800218 if (node1 != node2)
219 nr_cross_allocs++;
220 }
221 nr_allocs++;
Li Zefanba77c9e2009-11-20 15:53:25 +0800222}
223
Li Zefan079d3f62009-11-24 13:26:55 +0800224static int ptr_cmp(struct alloc_stat *, struct alloc_stat *);
225static int callsite_cmp(struct alloc_stat *, struct alloc_stat *);
226
227static struct alloc_stat *search_alloc_stat(unsigned long ptr,
228 unsigned long call_site,
229 struct rb_root *root,
230 sort_fn_t sort_fn)
231{
232 struct rb_node *node = root->rb_node;
233 struct alloc_stat key = { .ptr = ptr, .call_site = call_site };
234
235 while (node) {
236 struct alloc_stat *data;
237 int cmp;
238
239 data = rb_entry(node, struct alloc_stat, node);
240
241 cmp = sort_fn(&key, data);
242 if (cmp < 0)
243 node = node->rb_left;
244 else if (cmp > 0)
245 node = node->rb_right;
246 else
247 return data;
248 }
249 return NULL;
250}
251
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800252static void process_free_event(void *data,
Li Zefan079d3f62009-11-24 13:26:55 +0800253 struct event *event,
254 int cpu,
Li Zefanba77c9e2009-11-20 15:53:25 +0800255 u64 timestamp __used,
256 struct thread *thread __used)
257{
Li Zefan079d3f62009-11-24 13:26:55 +0800258 unsigned long ptr;
259 struct alloc_stat *s_alloc, *s_caller;
260
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800261 ptr = raw_field_value(event, "ptr", data);
Li Zefan079d3f62009-11-24 13:26:55 +0800262
263 s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp);
264 if (!s_alloc)
265 return;
266
267 if (cpu != s_alloc->alloc_cpu) {
268 s_alloc->pingpong++;
269
270 s_caller = search_alloc_stat(0, s_alloc->call_site,
271 &root_caller_stat, callsite_cmp);
272 assert(s_caller);
273 s_caller->pingpong++;
274 }
275 s_alloc->alloc_cpu = -1;
Li Zefanba77c9e2009-11-20 15:53:25 +0800276}
277
278static void
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800279process_raw_event(event_t *raw_event __used, void *data,
Li Zefanba77c9e2009-11-20 15:53:25 +0800280 int cpu, u64 timestamp, struct thread *thread)
281{
Li Zefanba77c9e2009-11-20 15:53:25 +0800282 struct event *event;
283 int type;
284
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800285 type = trace_parse_common_type(data);
Li Zefanba77c9e2009-11-20 15:53:25 +0800286 event = trace_find_event(type);
287
288 if (!strcmp(event->name, "kmalloc") ||
289 !strcmp(event->name, "kmem_cache_alloc")) {
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800290 process_alloc_event(data, event, cpu, timestamp, thread, 0);
Li Zefanba77c9e2009-11-20 15:53:25 +0800291 return;
292 }
293
294 if (!strcmp(event->name, "kmalloc_node") ||
295 !strcmp(event->name, "kmem_cache_alloc_node")) {
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800296 process_alloc_event(data, event, cpu, timestamp, thread, 1);
Li Zefanba77c9e2009-11-20 15:53:25 +0800297 return;
298 }
299
300 if (!strcmp(event->name, "kfree") ||
301 !strcmp(event->name, "kmem_cache_free")) {
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800302 process_free_event(data, event, cpu, timestamp, thread);
Li Zefanba77c9e2009-11-20 15:53:25 +0800303 return;
304 }
305}
306
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200307static int process_sample_event(event_t *event, struct perf_session *session)
Li Zefanba77c9e2009-11-20 15:53:25 +0800308{
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +0900309 struct sample_data data;
310 struct thread *thread;
Li Zefanba77c9e2009-11-20 15:53:25 +0800311
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +0900312 memset(&data, 0, sizeof(data));
313 data.time = -1;
314 data.cpu = -1;
315 data.period = 1;
Li Zefanba77c9e2009-11-20 15:53:25 +0800316
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -0200317 event__parse_sample(event, session->sample_type, &data);
Li Zefanba77c9e2009-11-20 15:53:25 +0800318
Arnaldo Carvalho de Melo0d755032010-01-14 12:23:09 -0200319 dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld\n", event->header.misc,
320 data.pid, data.tid, data.ip, data.period);
Li Zefanba77c9e2009-11-20 15:53:25 +0800321
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200322 thread = perf_session__findnew(session, event->ip.pid);
Li Zefanba77c9e2009-11-20 15:53:25 +0800323 if (thread == NULL) {
324 pr_debug("problem processing %d event, skipping it.\n",
325 event->header.type);
326 return -1;
327 }
328
329 dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
330
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800331 process_raw_event(event, data.raw_data, data.cpu,
Xiao Guangrongd8bd9e02009-12-07 12:06:29 +0800332 data.time, thread);
Li Zefanba77c9e2009-11-20 15:53:25 +0800333
334 return 0;
335}
336
Arnaldo Carvalho de Melo301a0b02009-12-13 19:50:25 -0200337static struct perf_event_ops event_ops = {
Arnaldo Carvalho de Melo55aa6402009-12-27 21:37:05 -0200338 .sample = process_sample_event,
339 .comm = event__process_comm,
Li Zefanba77c9e2009-11-20 15:53:25 +0800340};
341
Li Zefanba77c9e2009-11-20 15:53:25 +0800342static double fragmentation(unsigned long n_req, unsigned long n_alloc)
343{
344 if (n_alloc == 0)
345 return 0.0;
346 else
347 return 100.0 - (100.0 * n_req / n_alloc);
348}
349
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200350static void __print_result(struct rb_root *root, struct perf_session *session,
351 int n_lines, int is_caller)
Li Zefanba77c9e2009-11-20 15:53:25 +0800352{
353 struct rb_node *next;
354
Li Zefan079d3f62009-11-24 13:26:55 +0800355 printf("%.102s\n", graph_dotted_line);
356 printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr");
Pekka Enberg47103272010-01-19 19:23:23 +0200357 printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n");
Li Zefan079d3f62009-11-24 13:26:55 +0800358 printf("%.102s\n", graph_dotted_line);
Li Zefanba77c9e2009-11-20 15:53:25 +0800359
360 next = rb_first(root);
361
362 while (next && n_lines--) {
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200363 struct alloc_stat *data = rb_entry(next, struct alloc_stat,
364 node);
365 struct symbol *sym = NULL;
Li Zefan079d3f62009-11-24 13:26:55 +0800366 char buf[BUFSIZ];
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200367 u64 addr;
Li Zefanba77c9e2009-11-20 15:53:25 +0800368
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200369 if (is_caller) {
370 addr = data->call_site;
Li Zefan7707b6b2009-11-24 13:25:48 +0800371 if (!raw_ip)
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -0200372 sym = map_groups__find_function(&session->kmaps, addr, NULL);
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200373 } else
374 addr = data->ptr;
Li Zefanba77c9e2009-11-20 15:53:25 +0800375
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200376 if (sym != NULL)
Li Zefan079d3f62009-11-24 13:26:55 +0800377 snprintf(buf, sizeof(buf), "%s+%Lx", sym->name,
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200378 addr - sym->start);
379 else
Li Zefan079d3f62009-11-24 13:26:55 +0800380 snprintf(buf, sizeof(buf), "%#Lx", addr);
381 printf(" %-34s |", buf);
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200382
Pekka Enberg47103272010-01-19 19:23:23 +0200383 printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n",
Li Zefan079d3f62009-11-24 13:26:55 +0800384 (unsigned long long)data->bytes_alloc,
Li Zefanba77c9e2009-11-20 15:53:25 +0800385 (unsigned long)data->bytes_alloc / data->hit,
386 (unsigned long long)data->bytes_req,
387 (unsigned long)data->bytes_req / data->hit,
388 (unsigned long)data->hit,
Li Zefan079d3f62009-11-24 13:26:55 +0800389 (unsigned long)data->pingpong,
Li Zefanba77c9e2009-11-20 15:53:25 +0800390 fragmentation(data->bytes_req, data->bytes_alloc));
391
392 next = rb_next(next);
393 }
394
395 if (n_lines == -1)
Li Zefan079d3f62009-11-24 13:26:55 +0800396 printf(" ... | ... | ... | ... | ... | ... \n");
Li Zefanba77c9e2009-11-20 15:53:25 +0800397
Li Zefan079d3f62009-11-24 13:26:55 +0800398 printf("%.102s\n", graph_dotted_line);
Li Zefanba77c9e2009-11-20 15:53:25 +0800399}
400
401static void print_summary(void)
402{
403 printf("\nSUMMARY\n=======\n");
404 printf("Total bytes requested: %lu\n", total_requested);
405 printf("Total bytes allocated: %lu\n", total_allocated);
406 printf("Total bytes wasted on internal fragmentation: %lu\n",
407 total_allocated - total_requested);
408 printf("Internal fragmentation: %f%%\n",
409 fragmentation(total_requested, total_allocated));
Li Zefan7d0d3942009-11-24 13:26:31 +0800410 printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs);
Li Zefanba77c9e2009-11-20 15:53:25 +0800411}
412
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200413static void print_result(struct perf_session *session)
Li Zefanba77c9e2009-11-20 15:53:25 +0800414{
415 if (caller_flag)
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200416 __print_result(&root_caller_sorted, session, caller_lines, 1);
Li Zefanba77c9e2009-11-20 15:53:25 +0800417 if (alloc_flag)
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200418 __print_result(&root_alloc_sorted, session, alloc_lines, 0);
Li Zefanba77c9e2009-11-20 15:53:25 +0800419 print_summary();
420}
421
Li Zefan29b3e152009-11-24 13:26:10 +0800422struct sort_dimension {
423 const char name[20];
424 sort_fn_t cmp;
425 struct list_head list;
426};
427
428static LIST_HEAD(caller_sort);
429static LIST_HEAD(alloc_sort);
430
Li Zefanba77c9e2009-11-20 15:53:25 +0800431static void sort_insert(struct rb_root *root, struct alloc_stat *data,
Li Zefan29b3e152009-11-24 13:26:10 +0800432 struct list_head *sort_list)
Li Zefanba77c9e2009-11-20 15:53:25 +0800433{
434 struct rb_node **new = &(root->rb_node);
435 struct rb_node *parent = NULL;
Li Zefan29b3e152009-11-24 13:26:10 +0800436 struct sort_dimension *sort;
Li Zefanba77c9e2009-11-20 15:53:25 +0800437
438 while (*new) {
439 struct alloc_stat *this;
Li Zefan29b3e152009-11-24 13:26:10 +0800440 int cmp = 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800441
442 this = rb_entry(*new, struct alloc_stat, node);
443 parent = *new;
444
Li Zefan29b3e152009-11-24 13:26:10 +0800445 list_for_each_entry(sort, sort_list, list) {
446 cmp = sort->cmp(data, this);
447 if (cmp)
448 break;
449 }
Li Zefanba77c9e2009-11-20 15:53:25 +0800450
451 if (cmp > 0)
452 new = &((*new)->rb_left);
453 else
454 new = &((*new)->rb_right);
455 }
456
457 rb_link_node(&data->node, parent, new);
458 rb_insert_color(&data->node, root);
459}
460
461static void __sort_result(struct rb_root *root, struct rb_root *root_sorted,
Li Zefan29b3e152009-11-24 13:26:10 +0800462 struct list_head *sort_list)
Li Zefanba77c9e2009-11-20 15:53:25 +0800463{
464 struct rb_node *node;
465 struct alloc_stat *data;
466
467 for (;;) {
468 node = rb_first(root);
469 if (!node)
470 break;
471
472 rb_erase(node, root);
473 data = rb_entry(node, struct alloc_stat, node);
Li Zefan29b3e152009-11-24 13:26:10 +0800474 sort_insert(root_sorted, data, sort_list);
Li Zefanba77c9e2009-11-20 15:53:25 +0800475 }
476}
477
478static void sort_result(void)
479{
Li Zefan29b3e152009-11-24 13:26:10 +0800480 __sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort);
481 __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort);
Li Zefanba77c9e2009-11-20 15:53:25 +0800482}
483
484static int __cmd_kmem(void)
485{
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -0200486 int err = -EINVAL;
Arnaldo Carvalho de Melo75be6cf2009-12-15 20:04:39 -0200487 struct perf_session *session = perf_session__new(input_name, O_RDONLY, 0);
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200488 if (session == NULL)
489 return -ENOMEM;
Li Zefanba77c9e2009-11-20 15:53:25 +0800490
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -0200491 if (!perf_session__has_traces(session, "kmem record"))
492 goto out_delete;
493
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200494 setup_pager();
495 err = perf_session__process_events(session, &event_ops);
496 if (err != 0)
497 goto out_delete;
498 sort_result();
499 print_result(session);
500out_delete:
501 perf_session__delete(session);
502 return err;
Li Zefanba77c9e2009-11-20 15:53:25 +0800503}
504
505static const char * const kmem_usage[] = {
Li Zefan90b86a92009-12-10 15:21:57 +0800506 "perf kmem [<options>] {record|stat}",
Li Zefanba77c9e2009-11-20 15:53:25 +0800507 NULL
508};
509
Li Zefanba77c9e2009-11-20 15:53:25 +0800510static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r)
511{
512 if (l->ptr < r->ptr)
513 return -1;
514 else if (l->ptr > r->ptr)
515 return 1;
516 return 0;
517}
518
Li Zefan29b3e152009-11-24 13:26:10 +0800519static struct sort_dimension ptr_sort_dimension = {
520 .name = "ptr",
521 .cmp = ptr_cmp,
522};
523
Li Zefanba77c9e2009-11-20 15:53:25 +0800524static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r)
525{
526 if (l->call_site < r->call_site)
527 return -1;
528 else if (l->call_site > r->call_site)
529 return 1;
530 return 0;
531}
532
Li Zefan29b3e152009-11-24 13:26:10 +0800533static struct sort_dimension callsite_sort_dimension = {
534 .name = "callsite",
535 .cmp = callsite_cmp,
536};
537
Pekka Enbergf3ced7c2009-11-22 11:58:00 +0200538static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r)
539{
540 if (l->hit < r->hit)
541 return -1;
542 else if (l->hit > r->hit)
543 return 1;
544 return 0;
545}
546
Li Zefan29b3e152009-11-24 13:26:10 +0800547static struct sort_dimension hit_sort_dimension = {
548 .name = "hit",
549 .cmp = hit_cmp,
550};
551
Li Zefanba77c9e2009-11-20 15:53:25 +0800552static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r)
553{
554 if (l->bytes_alloc < r->bytes_alloc)
555 return -1;
556 else if (l->bytes_alloc > r->bytes_alloc)
557 return 1;
558 return 0;
559}
560
Li Zefan29b3e152009-11-24 13:26:10 +0800561static struct sort_dimension bytes_sort_dimension = {
562 .name = "bytes",
563 .cmp = bytes_cmp,
564};
565
Pekka Enbergf3ced7c2009-11-22 11:58:00 +0200566static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r)
567{
568 double x, y;
569
570 x = fragmentation(l->bytes_req, l->bytes_alloc);
571 y = fragmentation(r->bytes_req, r->bytes_alloc);
572
573 if (x < y)
574 return -1;
575 else if (x > y)
576 return 1;
577 return 0;
578}
579
Li Zefan29b3e152009-11-24 13:26:10 +0800580static struct sort_dimension frag_sort_dimension = {
581 .name = "frag",
582 .cmp = frag_cmp,
583};
584
Li Zefan079d3f62009-11-24 13:26:55 +0800585static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r)
586{
587 if (l->pingpong < r->pingpong)
588 return -1;
589 else if (l->pingpong > r->pingpong)
590 return 1;
591 return 0;
592}
593
594static struct sort_dimension pingpong_sort_dimension = {
595 .name = "pingpong",
596 .cmp = pingpong_cmp,
597};
598
Li Zefan29b3e152009-11-24 13:26:10 +0800599static struct sort_dimension *avail_sorts[] = {
600 &ptr_sort_dimension,
601 &callsite_sort_dimension,
602 &hit_sort_dimension,
603 &bytes_sort_dimension,
604 &frag_sort_dimension,
Li Zefan079d3f62009-11-24 13:26:55 +0800605 &pingpong_sort_dimension,
Li Zefan29b3e152009-11-24 13:26:10 +0800606};
607
608#define NUM_AVAIL_SORTS \
609 (int)(sizeof(avail_sorts) / sizeof(struct sort_dimension *))
610
611static int sort_dimension__add(const char *tok, struct list_head *list)
612{
613 struct sort_dimension *sort;
614 int i;
615
616 for (i = 0; i < NUM_AVAIL_SORTS; i++) {
617 if (!strcmp(avail_sorts[i]->name, tok)) {
618 sort = malloc(sizeof(*sort));
619 if (!sort)
620 die("malloc");
621 memcpy(sort, avail_sorts[i], sizeof(*sort));
622 list_add_tail(&sort->list, list);
623 return 0;
624 }
625 }
626
627 return -1;
628}
629
630static int setup_sorting(struct list_head *sort_list, const char *arg)
631{
632 char *tok;
633 char *str = strdup(arg);
634
635 if (!str)
636 die("strdup");
637
638 while (true) {
639 tok = strsep(&str, ",");
640 if (!tok)
641 break;
642 if (sort_dimension__add(tok, sort_list) < 0) {
643 error("Unknown --sort key: '%s'", tok);
644 return -1;
645 }
646 }
647
648 free(str);
649 return 0;
650}
651
Li Zefanba77c9e2009-11-20 15:53:25 +0800652static int parse_sort_opt(const struct option *opt __used,
653 const char *arg, int unset __used)
654{
Li Zefanba77c9e2009-11-20 15:53:25 +0800655 if (!arg)
656 return -1;
657
Li Zefanba77c9e2009-11-20 15:53:25 +0800658 if (caller_flag > alloc_flag)
Li Zefan29b3e152009-11-24 13:26:10 +0800659 return setup_sorting(&caller_sort, arg);
Li Zefanba77c9e2009-11-20 15:53:25 +0800660 else
Li Zefan29b3e152009-11-24 13:26:10 +0800661 return setup_sorting(&alloc_sort, arg);
Li Zefanba77c9e2009-11-20 15:53:25 +0800662
663 return 0;
664}
665
Li Zefan90b86a92009-12-10 15:21:57 +0800666static int parse_caller_opt(const struct option *opt __used,
Ingo Molnar79312412009-12-10 08:43:34 +0100667 const char *arg __used, int unset __used)
Li Zefanba77c9e2009-11-20 15:53:25 +0800668{
Li Zefan90b86a92009-12-10 15:21:57 +0800669 caller_flag = (alloc_flag + 1);
670 return 0;
671}
Li Zefanba77c9e2009-11-20 15:53:25 +0800672
Li Zefan90b86a92009-12-10 15:21:57 +0800673static int parse_alloc_opt(const struct option *opt __used,
Ingo Molnar79312412009-12-10 08:43:34 +0100674 const char *arg __used, int unset __used)
Li Zefan90b86a92009-12-10 15:21:57 +0800675{
676 alloc_flag = (caller_flag + 1);
Li Zefanba77c9e2009-11-20 15:53:25 +0800677 return 0;
678}
679
680static int parse_line_opt(const struct option *opt __used,
681 const char *arg, int unset __used)
682{
683 int lines;
684
685 if (!arg)
686 return -1;
687
688 lines = strtoul(arg, NULL, 10);
689
690 if (caller_flag > alloc_flag)
691 caller_lines = lines;
692 else
693 alloc_lines = lines;
694
695 return 0;
696}
697
698static const struct option kmem_options[] = {
699 OPT_STRING('i', "input", &input_name, "file",
700 "input file name"),
Li Zefan90b86a92009-12-10 15:21:57 +0800701 OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL,
702 "show per-callsite statistics",
703 parse_caller_opt),
704 OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL,
705 "show per-allocation statistics",
706 parse_alloc_opt),
Li Zefan29b3e152009-11-24 13:26:10 +0800707 OPT_CALLBACK('s', "sort", NULL, "key[,key2...]",
Li Zefan079d3f62009-11-24 13:26:55 +0800708 "sort by keys: ptr, call_site, bytes, hit, pingpong, frag",
Li Zefanba77c9e2009-11-20 15:53:25 +0800709 parse_sort_opt),
710 OPT_CALLBACK('l', "line", NULL, "num",
Li Zefan90b86a92009-12-10 15:21:57 +0800711 "show n lines",
Li Zefanba77c9e2009-11-20 15:53:25 +0800712 parse_line_opt),
Li Zefan7707b6b2009-11-24 13:25:48 +0800713 OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"),
Li Zefanba77c9e2009-11-20 15:53:25 +0800714 OPT_END()
715};
716
717static const char *record_args[] = {
718 "record",
719 "-a",
720 "-R",
721 "-M",
722 "-f",
723 "-c", "1",
724 "-e", "kmem:kmalloc",
725 "-e", "kmem:kmalloc_node",
726 "-e", "kmem:kfree",
727 "-e", "kmem:kmem_cache_alloc",
728 "-e", "kmem:kmem_cache_alloc_node",
729 "-e", "kmem:kmem_cache_free",
730};
731
732static int __cmd_record(int argc, const char **argv)
733{
734 unsigned int rec_argc, i, j;
735 const char **rec_argv;
736
737 rec_argc = ARRAY_SIZE(record_args) + argc - 1;
738 rec_argv = calloc(rec_argc + 1, sizeof(char *));
739
740 for (i = 0; i < ARRAY_SIZE(record_args); i++)
741 rec_argv[i] = strdup(record_args[i]);
742
743 for (j = 1; j < (unsigned int)argc; j++, i++)
744 rec_argv[i] = argv[j];
745
746 return cmd_record(i, rec_argv, NULL);
747}
748
749int cmd_kmem(int argc, const char **argv, const char *prefix __used)
750{
Li Zefanba77c9e2009-11-20 15:53:25 +0800751 argc = parse_options(argc, argv, kmem_options, kmem_usage, 0);
752
Li Zefan90b86a92009-12-10 15:21:57 +0800753 if (!argc)
Li Zefanba77c9e2009-11-20 15:53:25 +0800754 usage_with_options(kmem_usage, kmem_options);
755
Arnaldo Carvalho de Melo655000e2009-12-15 20:04:40 -0200756 symbol__init();
757
Li Zefan90b86a92009-12-10 15:21:57 +0800758 if (!strncmp(argv[0], "rec", 3)) {
759 return __cmd_record(argc, argv);
760 } else if (!strcmp(argv[0], "stat")) {
761 setup_cpunode_map();
Li Zefanba77c9e2009-11-20 15:53:25 +0800762
Li Zefan90b86a92009-12-10 15:21:57 +0800763 if (list_empty(&caller_sort))
764 setup_sorting(&caller_sort, default_sort_order);
765 if (list_empty(&alloc_sort))
766 setup_sorting(&alloc_sort, default_sort_order);
Li Zefan7d0d3942009-11-24 13:26:31 +0800767
Li Zefan90b86a92009-12-10 15:21:57 +0800768 return __cmd_kmem();
Pekka Enbergb00eca82010-01-19 19:26:11 +0200769 } else
770 usage_with_options(kmem_usage, kmem_options);
Li Zefan90b86a92009-12-10 15:21:57 +0800771
772 return 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800773}
774