blob: fc21ad79dd83e25a7520f00e6d3611587650ee79 [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
95 while (true) {
96 dent1 = readdir(dir1);
97 if (!dent1)
98 break;
99
100 if (sscanf(dent1->d_name, "node%u", &mem) < 1)
101 continue;
102
103 snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name);
104 dir2 = opendir(buf);
105 if (!dir2)
106 continue;
107 while (true) {
108 dent2 = readdir(dir2);
109 if (!dent2)
110 break;
111 if (sscanf(dent2->d_name, "cpu%u", &cpu) < 1)
112 continue;
113 cpunode_map[cpu] = mem;
114 }
115 }
116}
117
Li Zefan079d3f62009-11-24 13:26:55 +0800118static void insert_alloc_stat(unsigned long call_site, unsigned long ptr,
119 int bytes_req, int bytes_alloc, int cpu)
Li Zefanba77c9e2009-11-20 15:53:25 +0800120{
121 struct rb_node **node = &root_alloc_stat.rb_node;
122 struct rb_node *parent = NULL;
123 struct alloc_stat *data = NULL;
124
Li Zefanba77c9e2009-11-20 15:53:25 +0800125 while (*node) {
126 parent = *node;
127 data = rb_entry(*node, struct alloc_stat, node);
128
129 if (ptr > data->ptr)
130 node = &(*node)->rb_right;
131 else if (ptr < data->ptr)
132 node = &(*node)->rb_left;
133 else
134 break;
135 }
136
137 if (data && data->ptr == ptr) {
138 data->hit++;
139 data->bytes_req += bytes_req;
140 data->bytes_alloc += bytes_req;
141 } else {
142 data = malloc(sizeof(*data));
Li Zefan079d3f62009-11-24 13:26:55 +0800143 if (!data)
144 die("malloc");
Li Zefanba77c9e2009-11-20 15:53:25 +0800145 data->ptr = ptr;
Li Zefan079d3f62009-11-24 13:26:55 +0800146 data->pingpong = 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800147 data->hit = 1;
148 data->bytes_req = bytes_req;
149 data->bytes_alloc = bytes_alloc;
150
151 rb_link_node(&data->node, parent, node);
152 rb_insert_color(&data->node, &root_alloc_stat);
153 }
Li Zefan079d3f62009-11-24 13:26:55 +0800154 data->call_site = call_site;
155 data->alloc_cpu = cpu;
Li Zefanba77c9e2009-11-20 15:53:25 +0800156}
157
158static void insert_caller_stat(unsigned long call_site,
159 int bytes_req, int bytes_alloc)
160{
161 struct rb_node **node = &root_caller_stat.rb_node;
162 struct rb_node *parent = NULL;
163 struct alloc_stat *data = NULL;
164
Li Zefanba77c9e2009-11-20 15:53:25 +0800165 while (*node) {
166 parent = *node;
167 data = rb_entry(*node, struct alloc_stat, node);
168
169 if (call_site > data->call_site)
170 node = &(*node)->rb_right;
171 else if (call_site < data->call_site)
172 node = &(*node)->rb_left;
173 else
174 break;
175 }
176
177 if (data && data->call_site == call_site) {
178 data->hit++;
179 data->bytes_req += bytes_req;
180 data->bytes_alloc += bytes_req;
181 } else {
182 data = malloc(sizeof(*data));
Li Zefan079d3f62009-11-24 13:26:55 +0800183 if (!data)
184 die("malloc");
Li Zefanba77c9e2009-11-20 15:53:25 +0800185 data->call_site = call_site;
Li Zefan079d3f62009-11-24 13:26:55 +0800186 data->pingpong = 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800187 data->hit = 1;
188 data->bytes_req = bytes_req;
189 data->bytes_alloc = bytes_alloc;
190
191 rb_link_node(&data->node, parent, node);
192 rb_insert_color(&data->node, &root_caller_stat);
193 }
194}
195
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800196static void process_alloc_event(void *data,
Li Zefanba77c9e2009-11-20 15:53:25 +0800197 struct event *event,
Li Zefan7d0d3942009-11-24 13:26:31 +0800198 int cpu,
Li Zefanba77c9e2009-11-20 15:53:25 +0800199 u64 timestamp __used,
200 struct thread *thread __used,
Li Zefan7d0d3942009-11-24 13:26:31 +0800201 int node)
Li Zefanba77c9e2009-11-20 15:53:25 +0800202{
203 unsigned long call_site;
204 unsigned long ptr;
205 int bytes_req;
206 int bytes_alloc;
Li Zefan7d0d3942009-11-24 13:26:31 +0800207 int node1, node2;
Li Zefanba77c9e2009-11-20 15:53:25 +0800208
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800209 ptr = raw_field_value(event, "ptr", data);
210 call_site = raw_field_value(event, "call_site", data);
211 bytes_req = raw_field_value(event, "bytes_req", data);
212 bytes_alloc = raw_field_value(event, "bytes_alloc", data);
Li Zefanba77c9e2009-11-20 15:53:25 +0800213
Li Zefan079d3f62009-11-24 13:26:55 +0800214 insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, cpu);
Li Zefanba77c9e2009-11-20 15:53:25 +0800215 insert_caller_stat(call_site, bytes_req, bytes_alloc);
216
217 total_requested += bytes_req;
218 total_allocated += bytes_alloc;
Li Zefan7d0d3942009-11-24 13:26:31 +0800219
220 if (node) {
221 node1 = cpunode_map[cpu];
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800222 node2 = raw_field_value(event, "node", data);
Li Zefan7d0d3942009-11-24 13:26:31 +0800223 if (node1 != node2)
224 nr_cross_allocs++;
225 }
226 nr_allocs++;
Li Zefanba77c9e2009-11-20 15:53:25 +0800227}
228
Li Zefan079d3f62009-11-24 13:26:55 +0800229static int ptr_cmp(struct alloc_stat *, struct alloc_stat *);
230static int callsite_cmp(struct alloc_stat *, struct alloc_stat *);
231
232static struct alloc_stat *search_alloc_stat(unsigned long ptr,
233 unsigned long call_site,
234 struct rb_root *root,
235 sort_fn_t sort_fn)
236{
237 struct rb_node *node = root->rb_node;
238 struct alloc_stat key = { .ptr = ptr, .call_site = call_site };
239
240 while (node) {
241 struct alloc_stat *data;
242 int cmp;
243
244 data = rb_entry(node, struct alloc_stat, node);
245
246 cmp = sort_fn(&key, data);
247 if (cmp < 0)
248 node = node->rb_left;
249 else if (cmp > 0)
250 node = node->rb_right;
251 else
252 return data;
253 }
254 return NULL;
255}
256
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800257static void process_free_event(void *data,
Li Zefan079d3f62009-11-24 13:26:55 +0800258 struct event *event,
259 int cpu,
Li Zefanba77c9e2009-11-20 15:53:25 +0800260 u64 timestamp __used,
261 struct thread *thread __used)
262{
Li Zefan079d3f62009-11-24 13:26:55 +0800263 unsigned long ptr;
264 struct alloc_stat *s_alloc, *s_caller;
265
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800266 ptr = raw_field_value(event, "ptr", data);
Li Zefan079d3f62009-11-24 13:26:55 +0800267
268 s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp);
269 if (!s_alloc)
270 return;
271
272 if (cpu != s_alloc->alloc_cpu) {
273 s_alloc->pingpong++;
274
275 s_caller = search_alloc_stat(0, s_alloc->call_site,
276 &root_caller_stat, callsite_cmp);
277 assert(s_caller);
278 s_caller->pingpong++;
279 }
280 s_alloc->alloc_cpu = -1;
Li Zefanba77c9e2009-11-20 15:53:25 +0800281}
282
283static void
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800284process_raw_event(event_t *raw_event __used, void *data,
Li Zefanba77c9e2009-11-20 15:53:25 +0800285 int cpu, u64 timestamp, struct thread *thread)
286{
Li Zefanba77c9e2009-11-20 15:53:25 +0800287 struct event *event;
288 int type;
289
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800290 type = trace_parse_common_type(data);
Li Zefanba77c9e2009-11-20 15:53:25 +0800291 event = trace_find_event(type);
292
293 if (!strcmp(event->name, "kmalloc") ||
294 !strcmp(event->name, "kmem_cache_alloc")) {
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800295 process_alloc_event(data, event, cpu, timestamp, thread, 0);
Li Zefanba77c9e2009-11-20 15:53:25 +0800296 return;
297 }
298
299 if (!strcmp(event->name, "kmalloc_node") ||
300 !strcmp(event->name, "kmem_cache_alloc_node")) {
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800301 process_alloc_event(data, event, cpu, timestamp, thread, 1);
Li Zefanba77c9e2009-11-20 15:53:25 +0800302 return;
303 }
304
305 if (!strcmp(event->name, "kfree") ||
306 !strcmp(event->name, "kmem_cache_free")) {
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800307 process_free_event(data, event, cpu, timestamp, thread);
Li Zefanba77c9e2009-11-20 15:53:25 +0800308 return;
309 }
310}
311
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200312static int process_sample_event(event_t *event, struct perf_session *session)
Li Zefanba77c9e2009-11-20 15:53:25 +0800313{
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +0900314 struct sample_data data;
315 struct thread *thread;
Li Zefanba77c9e2009-11-20 15:53:25 +0800316
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +0900317 memset(&data, 0, sizeof(data));
318 data.time = -1;
319 data.cpu = -1;
320 data.period = 1;
Li Zefanba77c9e2009-11-20 15:53:25 +0800321
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -0200322 event__parse_sample(event, session->sample_type, &data);
Li Zefanba77c9e2009-11-20 15:53:25 +0800323
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -0200324 dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
Li Zefanba77c9e2009-11-20 15:53:25 +0800325 event->header.misc,
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +0900326 data.pid, data.tid,
327 (void *)(long)data.ip,
328 (long long)data.period);
Li Zefanba77c9e2009-11-20 15:53:25 +0800329
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200330 thread = perf_session__findnew(session, event->ip.pid);
Li Zefanba77c9e2009-11-20 15:53:25 +0800331 if (thread == NULL) {
332 pr_debug("problem processing %d event, skipping it.\n",
333 event->header.type);
334 return -1;
335 }
336
337 dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
338
Xiao Guangrongf48f6692009-12-07 13:04:04 +0800339 process_raw_event(event, data.raw_data, data.cpu,
Xiao Guangrongd8bd9e02009-12-07 12:06:29 +0800340 data.time, thread);
Li Zefanba77c9e2009-11-20 15:53:25 +0800341
342 return 0;
343}
344
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -0200345static int sample_type_check(struct perf_session *session)
Li Zefanba77c9e2009-11-20 15:53:25 +0800346{
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -0200347 if (!(session->sample_type & PERF_SAMPLE_RAW)) {
Li Zefanba77c9e2009-11-20 15:53:25 +0800348 fprintf(stderr,
349 "No trace sample to read. Did you call perf record "
350 "without -R?");
351 return -1;
352 }
353
354 return 0;
355}
356
Arnaldo Carvalho de Melo301a0b02009-12-13 19:50:25 -0200357static struct perf_event_ops event_ops = {
Li Zefanba77c9e2009-11-20 15:53:25 +0800358 .process_sample_event = process_sample_event,
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -0200359 .process_comm_event = event__process_comm,
Li Zefanba77c9e2009-11-20 15:53:25 +0800360 .sample_type_check = sample_type_check,
361};
362
Li Zefanba77c9e2009-11-20 15:53:25 +0800363static double fragmentation(unsigned long n_req, unsigned long n_alloc)
364{
365 if (n_alloc == 0)
366 return 0.0;
367 else
368 return 100.0 - (100.0 * n_req / n_alloc);
369}
370
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200371static void __print_result(struct rb_root *root, struct perf_session *session,
372 int n_lines, int is_caller)
Li Zefanba77c9e2009-11-20 15:53:25 +0800373{
374 struct rb_node *next;
375
Li Zefan079d3f62009-11-24 13:26:55 +0800376 printf("%.102s\n", graph_dotted_line);
377 printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr");
378 printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n");
379 printf("%.102s\n", graph_dotted_line);
Li Zefanba77c9e2009-11-20 15:53:25 +0800380
381 next = rb_first(root);
382
383 while (next && n_lines--) {
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200384 struct alloc_stat *data = rb_entry(next, struct alloc_stat,
385 node);
386 struct symbol *sym = NULL;
Li Zefan079d3f62009-11-24 13:26:55 +0800387 char buf[BUFSIZ];
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200388 u64 addr;
Li Zefanba77c9e2009-11-20 15:53:25 +0800389
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200390 if (is_caller) {
391 addr = data->call_site;
Li Zefan7707b6b2009-11-24 13:25:48 +0800392 if (!raw_ip)
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200393 sym = map_groups__find_function(&session->kmaps, session, addr, NULL);
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200394 } else
395 addr = data->ptr;
Li Zefanba77c9e2009-11-20 15:53:25 +0800396
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200397 if (sym != NULL)
Li Zefan079d3f62009-11-24 13:26:55 +0800398 snprintf(buf, sizeof(buf), "%s+%Lx", sym->name,
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200399 addr - sym->start);
400 else
Li Zefan079d3f62009-11-24 13:26:55 +0800401 snprintf(buf, sizeof(buf), "%#Lx", addr);
402 printf(" %-34s |", buf);
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200403
Li Zefan079d3f62009-11-24 13:26:55 +0800404 printf(" %9llu/%-5lu | %9llu/%-5lu | %6lu | %8lu | %6.3f%%\n",
405 (unsigned long long)data->bytes_alloc,
Li Zefanba77c9e2009-11-20 15:53:25 +0800406 (unsigned long)data->bytes_alloc / data->hit,
407 (unsigned long long)data->bytes_req,
408 (unsigned long)data->bytes_req / data->hit,
409 (unsigned long)data->hit,
Li Zefan079d3f62009-11-24 13:26:55 +0800410 (unsigned long)data->pingpong,
Li Zefanba77c9e2009-11-20 15:53:25 +0800411 fragmentation(data->bytes_req, data->bytes_alloc));
412
413 next = rb_next(next);
414 }
415
416 if (n_lines == -1)
Li Zefan079d3f62009-11-24 13:26:55 +0800417 printf(" ... | ... | ... | ... | ... | ... \n");
Li Zefanba77c9e2009-11-20 15:53:25 +0800418
Li Zefan079d3f62009-11-24 13:26:55 +0800419 printf("%.102s\n", graph_dotted_line);
Li Zefanba77c9e2009-11-20 15:53:25 +0800420}
421
422static void print_summary(void)
423{
424 printf("\nSUMMARY\n=======\n");
425 printf("Total bytes requested: %lu\n", total_requested);
426 printf("Total bytes allocated: %lu\n", total_allocated);
427 printf("Total bytes wasted on internal fragmentation: %lu\n",
428 total_allocated - total_requested);
429 printf("Internal fragmentation: %f%%\n",
430 fragmentation(total_requested, total_allocated));
Li Zefan7d0d3942009-11-24 13:26:31 +0800431 printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs);
Li Zefanba77c9e2009-11-20 15:53:25 +0800432}
433
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200434static void print_result(struct perf_session *session)
Li Zefanba77c9e2009-11-20 15:53:25 +0800435{
436 if (caller_flag)
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200437 __print_result(&root_caller_sorted, session, caller_lines, 1);
Li Zefanba77c9e2009-11-20 15:53:25 +0800438 if (alloc_flag)
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200439 __print_result(&root_alloc_sorted, session, alloc_lines, 0);
Li Zefanba77c9e2009-11-20 15:53:25 +0800440 print_summary();
441}
442
Li Zefan29b3e152009-11-24 13:26:10 +0800443struct sort_dimension {
444 const char name[20];
445 sort_fn_t cmp;
446 struct list_head list;
447};
448
449static LIST_HEAD(caller_sort);
450static LIST_HEAD(alloc_sort);
451
Li Zefanba77c9e2009-11-20 15:53:25 +0800452static void sort_insert(struct rb_root *root, struct alloc_stat *data,
Li Zefan29b3e152009-11-24 13:26:10 +0800453 struct list_head *sort_list)
Li Zefanba77c9e2009-11-20 15:53:25 +0800454{
455 struct rb_node **new = &(root->rb_node);
456 struct rb_node *parent = NULL;
Li Zefan29b3e152009-11-24 13:26:10 +0800457 struct sort_dimension *sort;
Li Zefanba77c9e2009-11-20 15:53:25 +0800458
459 while (*new) {
460 struct alloc_stat *this;
Li Zefan29b3e152009-11-24 13:26:10 +0800461 int cmp = 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800462
463 this = rb_entry(*new, struct alloc_stat, node);
464 parent = *new;
465
Li Zefan29b3e152009-11-24 13:26:10 +0800466 list_for_each_entry(sort, sort_list, list) {
467 cmp = sort->cmp(data, this);
468 if (cmp)
469 break;
470 }
Li Zefanba77c9e2009-11-20 15:53:25 +0800471
472 if (cmp > 0)
473 new = &((*new)->rb_left);
474 else
475 new = &((*new)->rb_right);
476 }
477
478 rb_link_node(&data->node, parent, new);
479 rb_insert_color(&data->node, root);
480}
481
482static void __sort_result(struct rb_root *root, struct rb_root *root_sorted,
Li Zefan29b3e152009-11-24 13:26:10 +0800483 struct list_head *sort_list)
Li Zefanba77c9e2009-11-20 15:53:25 +0800484{
485 struct rb_node *node;
486 struct alloc_stat *data;
487
488 for (;;) {
489 node = rb_first(root);
490 if (!node)
491 break;
492
493 rb_erase(node, root);
494 data = rb_entry(node, struct alloc_stat, node);
Li Zefan29b3e152009-11-24 13:26:10 +0800495 sort_insert(root_sorted, data, sort_list);
Li Zefanba77c9e2009-11-20 15:53:25 +0800496 }
497}
498
499static void sort_result(void)
500{
Li Zefan29b3e152009-11-24 13:26:10 +0800501 __sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort);
502 __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort);
Li Zefanba77c9e2009-11-20 15:53:25 +0800503}
504
505static int __cmd_kmem(void)
506{
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200507 int err;
Arnaldo Carvalho de Melo75be6cf2009-12-15 20:04:39 -0200508 struct perf_session *session = perf_session__new(input_name, O_RDONLY, 0);
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200509 if (session == NULL)
510 return -ENOMEM;
Li Zefanba77c9e2009-11-20 15:53:25 +0800511
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200512 setup_pager();
513 err = perf_session__process_events(session, &event_ops);
514 if (err != 0)
515 goto out_delete;
516 sort_result();
517 print_result(session);
518out_delete:
519 perf_session__delete(session);
520 return err;
Li Zefanba77c9e2009-11-20 15:53:25 +0800521}
522
523static const char * const kmem_usage[] = {
Li Zefan90b86a92009-12-10 15:21:57 +0800524 "perf kmem [<options>] {record|stat}",
Li Zefanba77c9e2009-11-20 15:53:25 +0800525 NULL
526};
527
Li Zefanba77c9e2009-11-20 15:53:25 +0800528static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r)
529{
530 if (l->ptr < r->ptr)
531 return -1;
532 else if (l->ptr > r->ptr)
533 return 1;
534 return 0;
535}
536
Li Zefan29b3e152009-11-24 13:26:10 +0800537static struct sort_dimension ptr_sort_dimension = {
538 .name = "ptr",
539 .cmp = ptr_cmp,
540};
541
Li Zefanba77c9e2009-11-20 15:53:25 +0800542static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r)
543{
544 if (l->call_site < r->call_site)
545 return -1;
546 else if (l->call_site > r->call_site)
547 return 1;
548 return 0;
549}
550
Li Zefan29b3e152009-11-24 13:26:10 +0800551static struct sort_dimension callsite_sort_dimension = {
552 .name = "callsite",
553 .cmp = callsite_cmp,
554};
555
Pekka Enbergf3ced7c2009-11-22 11:58:00 +0200556static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r)
557{
558 if (l->hit < r->hit)
559 return -1;
560 else if (l->hit > r->hit)
561 return 1;
562 return 0;
563}
564
Li Zefan29b3e152009-11-24 13:26:10 +0800565static struct sort_dimension hit_sort_dimension = {
566 .name = "hit",
567 .cmp = hit_cmp,
568};
569
Li Zefanba77c9e2009-11-20 15:53:25 +0800570static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r)
571{
572 if (l->bytes_alloc < r->bytes_alloc)
573 return -1;
574 else if (l->bytes_alloc > r->bytes_alloc)
575 return 1;
576 return 0;
577}
578
Li Zefan29b3e152009-11-24 13:26:10 +0800579static struct sort_dimension bytes_sort_dimension = {
580 .name = "bytes",
581 .cmp = bytes_cmp,
582};
583
Pekka Enbergf3ced7c2009-11-22 11:58:00 +0200584static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r)
585{
586 double x, y;
587
588 x = fragmentation(l->bytes_req, l->bytes_alloc);
589 y = fragmentation(r->bytes_req, r->bytes_alloc);
590
591 if (x < y)
592 return -1;
593 else if (x > y)
594 return 1;
595 return 0;
596}
597
Li Zefan29b3e152009-11-24 13:26:10 +0800598static struct sort_dimension frag_sort_dimension = {
599 .name = "frag",
600 .cmp = frag_cmp,
601};
602
Li Zefan079d3f62009-11-24 13:26:55 +0800603static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r)
604{
605 if (l->pingpong < r->pingpong)
606 return -1;
607 else if (l->pingpong > r->pingpong)
608 return 1;
609 return 0;
610}
611
612static struct sort_dimension pingpong_sort_dimension = {
613 .name = "pingpong",
614 .cmp = pingpong_cmp,
615};
616
Li Zefan29b3e152009-11-24 13:26:10 +0800617static struct sort_dimension *avail_sorts[] = {
618 &ptr_sort_dimension,
619 &callsite_sort_dimension,
620 &hit_sort_dimension,
621 &bytes_sort_dimension,
622 &frag_sort_dimension,
Li Zefan079d3f62009-11-24 13:26:55 +0800623 &pingpong_sort_dimension,
Li Zefan29b3e152009-11-24 13:26:10 +0800624};
625
626#define NUM_AVAIL_SORTS \
627 (int)(sizeof(avail_sorts) / sizeof(struct sort_dimension *))
628
629static int sort_dimension__add(const char *tok, struct list_head *list)
630{
631 struct sort_dimension *sort;
632 int i;
633
634 for (i = 0; i < NUM_AVAIL_SORTS; i++) {
635 if (!strcmp(avail_sorts[i]->name, tok)) {
636 sort = malloc(sizeof(*sort));
637 if (!sort)
638 die("malloc");
639 memcpy(sort, avail_sorts[i], sizeof(*sort));
640 list_add_tail(&sort->list, list);
641 return 0;
642 }
643 }
644
645 return -1;
646}
647
648static int setup_sorting(struct list_head *sort_list, const char *arg)
649{
650 char *tok;
651 char *str = strdup(arg);
652
653 if (!str)
654 die("strdup");
655
656 while (true) {
657 tok = strsep(&str, ",");
658 if (!tok)
659 break;
660 if (sort_dimension__add(tok, sort_list) < 0) {
661 error("Unknown --sort key: '%s'", tok);
662 return -1;
663 }
664 }
665
666 free(str);
667 return 0;
668}
669
Li Zefanba77c9e2009-11-20 15:53:25 +0800670static int parse_sort_opt(const struct option *opt __used,
671 const char *arg, int unset __used)
672{
Li Zefanba77c9e2009-11-20 15:53:25 +0800673 if (!arg)
674 return -1;
675
Li Zefanba77c9e2009-11-20 15:53:25 +0800676 if (caller_flag > alloc_flag)
Li Zefan29b3e152009-11-24 13:26:10 +0800677 return setup_sorting(&caller_sort, arg);
Li Zefanba77c9e2009-11-20 15:53:25 +0800678 else
Li Zefan29b3e152009-11-24 13:26:10 +0800679 return setup_sorting(&alloc_sort, arg);
Li Zefanba77c9e2009-11-20 15:53:25 +0800680
681 return 0;
682}
683
Li Zefan90b86a92009-12-10 15:21:57 +0800684static int parse_caller_opt(const struct option *opt __used,
Ingo Molnar79312412009-12-10 08:43:34 +0100685 const char *arg __used, int unset __used)
Li Zefanba77c9e2009-11-20 15:53:25 +0800686{
Li Zefan90b86a92009-12-10 15:21:57 +0800687 caller_flag = (alloc_flag + 1);
688 return 0;
689}
Li Zefanba77c9e2009-11-20 15:53:25 +0800690
Li Zefan90b86a92009-12-10 15:21:57 +0800691static int parse_alloc_opt(const struct option *opt __used,
Ingo Molnar79312412009-12-10 08:43:34 +0100692 const char *arg __used, int unset __used)
Li Zefan90b86a92009-12-10 15:21:57 +0800693{
694 alloc_flag = (caller_flag + 1);
Li Zefanba77c9e2009-11-20 15:53:25 +0800695 return 0;
696}
697
698static int parse_line_opt(const struct option *opt __used,
699 const char *arg, int unset __used)
700{
701 int lines;
702
703 if (!arg)
704 return -1;
705
706 lines = strtoul(arg, NULL, 10);
707
708 if (caller_flag > alloc_flag)
709 caller_lines = lines;
710 else
711 alloc_lines = lines;
712
713 return 0;
714}
715
716static const struct option kmem_options[] = {
717 OPT_STRING('i', "input", &input_name, "file",
718 "input file name"),
Li Zefan90b86a92009-12-10 15:21:57 +0800719 OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL,
720 "show per-callsite statistics",
721 parse_caller_opt),
722 OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL,
723 "show per-allocation statistics",
724 parse_alloc_opt),
Li Zefan29b3e152009-11-24 13:26:10 +0800725 OPT_CALLBACK('s', "sort", NULL, "key[,key2...]",
Li Zefan079d3f62009-11-24 13:26:55 +0800726 "sort by keys: ptr, call_site, bytes, hit, pingpong, frag",
Li Zefanba77c9e2009-11-20 15:53:25 +0800727 parse_sort_opt),
728 OPT_CALLBACK('l', "line", NULL, "num",
Li Zefan90b86a92009-12-10 15:21:57 +0800729 "show n lines",
Li Zefanba77c9e2009-11-20 15:53:25 +0800730 parse_line_opt),
Li Zefan7707b6b2009-11-24 13:25:48 +0800731 OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"),
Li Zefanba77c9e2009-11-20 15:53:25 +0800732 OPT_END()
733};
734
735static const char *record_args[] = {
736 "record",
737 "-a",
738 "-R",
739 "-M",
740 "-f",
741 "-c", "1",
742 "-e", "kmem:kmalloc",
743 "-e", "kmem:kmalloc_node",
744 "-e", "kmem:kfree",
745 "-e", "kmem:kmem_cache_alloc",
746 "-e", "kmem:kmem_cache_alloc_node",
747 "-e", "kmem:kmem_cache_free",
748};
749
750static int __cmd_record(int argc, const char **argv)
751{
752 unsigned int rec_argc, i, j;
753 const char **rec_argv;
754
755 rec_argc = ARRAY_SIZE(record_args) + argc - 1;
756 rec_argv = calloc(rec_argc + 1, sizeof(char *));
757
758 for (i = 0; i < ARRAY_SIZE(record_args); i++)
759 rec_argv[i] = strdup(record_args[i]);
760
761 for (j = 1; j < (unsigned int)argc; j++, i++)
762 rec_argv[i] = argv[j];
763
764 return cmd_record(i, rec_argv, NULL);
765}
766
767int cmd_kmem(int argc, const char **argv, const char *prefix __used)
768{
Li Zefanba77c9e2009-11-20 15:53:25 +0800769 argc = parse_options(argc, argv, kmem_options, kmem_usage, 0);
770
Li Zefan90b86a92009-12-10 15:21:57 +0800771 if (!argc)
Li Zefanba77c9e2009-11-20 15:53:25 +0800772 usage_with_options(kmem_usage, kmem_options);
773
Arnaldo Carvalho de Melo655000e2009-12-15 20:04:40 -0200774 symbol__init();
775
Li Zefan90b86a92009-12-10 15:21:57 +0800776 if (!strncmp(argv[0], "rec", 3)) {
777 return __cmd_record(argc, argv);
778 } else if (!strcmp(argv[0], "stat")) {
779 setup_cpunode_map();
Li Zefanba77c9e2009-11-20 15:53:25 +0800780
Li Zefan90b86a92009-12-10 15:21:57 +0800781 if (list_empty(&caller_sort))
782 setup_sorting(&caller_sort, default_sort_order);
783 if (list_empty(&alloc_sort))
784 setup_sorting(&alloc_sort, default_sort_order);
Li Zefan7d0d3942009-11-24 13:26:31 +0800785
Li Zefan90b86a92009-12-10 15:21:57 +0800786 return __cmd_kmem();
787 }
788
789 return 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800790}
791