blob: 929462aa494351f5f237eaa03ce0042146853945 [file] [log] [blame]
Li Zefanba77c9e2009-11-20 15:53:25 +08001#include "builtin.h"
2#include "perf.h"
3
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -03004#include "util/evlist.h"
Arnaldo Carvalho de Melofcf65bf2012-08-07 09:58:03 -03005#include "util/evsel.h"
Li Zefanba77c9e2009-11-20 15:53:25 +08006#include "util/util.h"
7#include "util/cache.h"
8#include "util/symbol.h"
9#include "util/thread.h"
10#include "util/header.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020011#include "util/session.h"
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020012#include "util/tool.h"
Li Zefanba77c9e2009-11-20 15:53:25 +080013
14#include "util/parse-options.h"
15#include "util/trace-event.h"
Jiri Olsaf5fc1412013-10-15 16:27:32 +020016#include "util/data.h"
Li Zefanba77c9e2009-11-20 15:53:25 +080017
18#include "util/debug.h"
Li Zefanba77c9e2009-11-20 15:53:25 +080019
20#include <linux/rbtree.h>
Arnaldo Carvalho de Melo8d9233f2013-01-24 22:24:57 -030021#include <linux/string.h>
Li Zefanba77c9e2009-11-20 15:53:25 +080022
23struct alloc_stat;
24typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *);
25
Li Zefanba77c9e2009-11-20 15:53:25 +080026static int alloc_flag;
27static int caller_flag;
28
Li Zefanba77c9e2009-11-20 15:53:25 +080029static int alloc_lines = -1;
30static int caller_lines = -1;
31
Li Zefan7707b6b2009-11-24 13:25:48 +080032static bool raw_ip;
33
Li Zefan7d0d3942009-11-24 13:26:31 +080034static int *cpunode_map;
35static int max_cpu_num;
36
Li Zefanba77c9e2009-11-20 15:53:25 +080037struct alloc_stat {
Li Zefan079d3f62009-11-24 13:26:55 +080038 u64 call_site;
39 u64 ptr;
Li Zefanba77c9e2009-11-20 15:53:25 +080040 u64 bytes_req;
41 u64 bytes_alloc;
42 u32 hit;
Li Zefan079d3f62009-11-24 13:26:55 +080043 u32 pingpong;
44
45 short alloc_cpu;
Li Zefanba77c9e2009-11-20 15:53:25 +080046
47 struct rb_node node;
48};
49
50static struct rb_root root_alloc_stat;
51static struct rb_root root_alloc_sorted;
52static struct rb_root root_caller_stat;
53static struct rb_root root_caller_sorted;
54
55static unsigned long total_requested, total_allocated;
Li Zefan7d0d3942009-11-24 13:26:31 +080056static unsigned long nr_allocs, nr_cross_allocs;
Li Zefanba77c9e2009-11-20 15:53:25 +080057
Li Zefan7d0d3942009-11-24 13:26:31 +080058#define PATH_SYS_NODE "/sys/devices/system/node"
59
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -030060static int init_cpunode_map(void)
Li Zefan7d0d3942009-11-24 13:26:31 +080061{
62 FILE *fp;
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -030063 int i, err = -1;
Li Zefan7d0d3942009-11-24 13:26:31 +080064
65 fp = fopen("/sys/devices/system/cpu/kernel_max", "r");
66 if (!fp) {
67 max_cpu_num = 4096;
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -030068 return 0;
Li Zefan7d0d3942009-11-24 13:26:31 +080069 }
70
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -030071 if (fscanf(fp, "%d", &max_cpu_num) < 1) {
72 pr_err("Failed to read 'kernel_max' from sysfs");
73 goto out_close;
74 }
75
Li Zefan7d0d3942009-11-24 13:26:31 +080076 max_cpu_num++;
77
78 cpunode_map = calloc(max_cpu_num, sizeof(int));
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -030079 if (!cpunode_map) {
80 pr_err("%s: calloc failed\n", __func__);
81 goto out_close;
82 }
83
Li Zefan7d0d3942009-11-24 13:26:31 +080084 for (i = 0; i < max_cpu_num; i++)
85 cpunode_map[i] = -1;
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -030086
87 err = 0;
88out_close:
Li Zefan7d0d3942009-11-24 13:26:31 +080089 fclose(fp);
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -030090 return err;
Li Zefan7d0d3942009-11-24 13:26:31 +080091}
92
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -030093static int setup_cpunode_map(void)
Li Zefan7d0d3942009-11-24 13:26:31 +080094{
95 struct dirent *dent1, *dent2;
96 DIR *dir1, *dir2;
97 unsigned int cpu, mem;
98 char buf[PATH_MAX];
99
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300100 if (init_cpunode_map())
101 return -1;
Li Zefan7d0d3942009-11-24 13:26:31 +0800102
103 dir1 = opendir(PATH_SYS_NODE);
104 if (!dir1)
Jiri Olsa4921e322013-09-12 18:39:36 +0200105 return 0;
Li Zefan7d0d3942009-11-24 13:26:31 +0800106
Ulrich Drepper659d8cf2009-12-19 16:40:28 -0500107 while ((dent1 = readdir(dir1)) != NULL) {
108 if (dent1->d_type != DT_DIR ||
109 sscanf(dent1->d_name, "node%u", &mem) < 1)
Li Zefan7d0d3942009-11-24 13:26:31 +0800110 continue;
111
112 snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name);
113 dir2 = opendir(buf);
114 if (!dir2)
115 continue;
Ulrich Drepper659d8cf2009-12-19 16:40:28 -0500116 while ((dent2 = readdir(dir2)) != NULL) {
117 if (dent2->d_type != DT_LNK ||
118 sscanf(dent2->d_name, "cpu%u", &cpu) < 1)
Li Zefan7d0d3942009-11-24 13:26:31 +0800119 continue;
120 cpunode_map[cpu] = mem;
121 }
Namhyung Kim8442da12012-01-08 02:25:28 +0900122 closedir(dir2);
Li Zefan7d0d3942009-11-24 13:26:31 +0800123 }
Namhyung Kim8442da12012-01-08 02:25:28 +0900124 closedir(dir1);
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300125 return 0;
Li Zefan7d0d3942009-11-24 13:26:31 +0800126}
127
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300128static int insert_alloc_stat(unsigned long call_site, unsigned long ptr,
129 int bytes_req, int bytes_alloc, int cpu)
Li Zefanba77c9e2009-11-20 15:53:25 +0800130{
131 struct rb_node **node = &root_alloc_stat.rb_node;
132 struct rb_node *parent = NULL;
133 struct alloc_stat *data = NULL;
134
Li Zefanba77c9e2009-11-20 15:53:25 +0800135 while (*node) {
136 parent = *node;
137 data = rb_entry(*node, struct alloc_stat, node);
138
139 if (ptr > data->ptr)
140 node = &(*node)->rb_right;
141 else if (ptr < data->ptr)
142 node = &(*node)->rb_left;
143 else
144 break;
145 }
146
147 if (data && data->ptr == ptr) {
148 data->hit++;
149 data->bytes_req += bytes_req;
Wenji Huang4efb5292009-12-21 17:52:55 +0800150 data->bytes_alloc += bytes_alloc;
Li Zefanba77c9e2009-11-20 15:53:25 +0800151 } else {
152 data = malloc(sizeof(*data));
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300153 if (!data) {
154 pr_err("%s: malloc failed\n", __func__);
155 return -1;
156 }
Li Zefanba77c9e2009-11-20 15:53:25 +0800157 data->ptr = ptr;
Li Zefan079d3f62009-11-24 13:26:55 +0800158 data->pingpong = 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800159 data->hit = 1;
160 data->bytes_req = bytes_req;
161 data->bytes_alloc = bytes_alloc;
162
163 rb_link_node(&data->node, parent, node);
164 rb_insert_color(&data->node, &root_alloc_stat);
165 }
Li Zefan079d3f62009-11-24 13:26:55 +0800166 data->call_site = call_site;
167 data->alloc_cpu = cpu;
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300168 return 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800169}
170
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300171static int insert_caller_stat(unsigned long call_site,
Li Zefanba77c9e2009-11-20 15:53:25 +0800172 int bytes_req, int bytes_alloc)
173{
174 struct rb_node **node = &root_caller_stat.rb_node;
175 struct rb_node *parent = NULL;
176 struct alloc_stat *data = NULL;
177
Li Zefanba77c9e2009-11-20 15:53:25 +0800178 while (*node) {
179 parent = *node;
180 data = rb_entry(*node, struct alloc_stat, node);
181
182 if (call_site > data->call_site)
183 node = &(*node)->rb_right;
184 else if (call_site < data->call_site)
185 node = &(*node)->rb_left;
186 else
187 break;
188 }
189
190 if (data && data->call_site == call_site) {
191 data->hit++;
192 data->bytes_req += bytes_req;
Wenji Huang4efb5292009-12-21 17:52:55 +0800193 data->bytes_alloc += bytes_alloc;
Li Zefanba77c9e2009-11-20 15:53:25 +0800194 } else {
195 data = malloc(sizeof(*data));
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300196 if (!data) {
197 pr_err("%s: malloc failed\n", __func__);
198 return -1;
199 }
Li Zefanba77c9e2009-11-20 15:53:25 +0800200 data->call_site = call_site;
Li Zefan079d3f62009-11-24 13:26:55 +0800201 data->pingpong = 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800202 data->hit = 1;
203 data->bytes_req = bytes_req;
204 data->bytes_alloc = bytes_alloc;
205
206 rb_link_node(&data->node, parent, node);
207 rb_insert_color(&data->node, &root_caller_stat);
208 }
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300209
210 return 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800211}
212
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300213static int perf_evsel__process_alloc_event(struct perf_evsel *evsel,
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -0300214 struct perf_sample *sample)
Li Zefanba77c9e2009-11-20 15:53:25 +0800215{
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -0300216 unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"),
217 call_site = perf_evsel__intval(evsel, sample, "call_site");
218 int bytes_req = perf_evsel__intval(evsel, sample, "bytes_req"),
219 bytes_alloc = perf_evsel__intval(evsel, sample, "bytes_alloc");
Li Zefanba77c9e2009-11-20 15:53:25 +0800220
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -0300221 if (insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, sample->cpu) ||
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300222 insert_caller_stat(call_site, bytes_req, bytes_alloc))
223 return -1;
Li Zefanba77c9e2009-11-20 15:53:25 +0800224
225 total_requested += bytes_req;
226 total_allocated += bytes_alloc;
Li Zefan7d0d3942009-11-24 13:26:31 +0800227
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -0300228 nr_allocs++;
229 return 0;
230}
231
232static int perf_evsel__process_alloc_node_event(struct perf_evsel *evsel,
233 struct perf_sample *sample)
234{
235 int ret = perf_evsel__process_alloc_event(evsel, sample);
236
237 if (!ret) {
238 int node1 = cpunode_map[sample->cpu],
239 node2 = perf_evsel__intval(evsel, sample, "node");
240
Li Zefan7d0d3942009-11-24 13:26:31 +0800241 if (node1 != node2)
242 nr_cross_allocs++;
243 }
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -0300244
245 return ret;
Li Zefanba77c9e2009-11-20 15:53:25 +0800246}
247
Li Zefan079d3f62009-11-24 13:26:55 +0800248static int ptr_cmp(struct alloc_stat *, struct alloc_stat *);
249static int callsite_cmp(struct alloc_stat *, struct alloc_stat *);
250
251static struct alloc_stat *search_alloc_stat(unsigned long ptr,
252 unsigned long call_site,
253 struct rb_root *root,
254 sort_fn_t sort_fn)
255{
256 struct rb_node *node = root->rb_node;
257 struct alloc_stat key = { .ptr = ptr, .call_site = call_site };
258
259 while (node) {
260 struct alloc_stat *data;
261 int cmp;
262
263 data = rb_entry(node, struct alloc_stat, node);
264
265 cmp = sort_fn(&key, data);
266 if (cmp < 0)
267 node = node->rb_left;
268 else if (cmp > 0)
269 node = node->rb_right;
270 else
271 return data;
272 }
273 return NULL;
274}
275
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300276static int perf_evsel__process_free_event(struct perf_evsel *evsel,
277 struct perf_sample *sample)
Li Zefanba77c9e2009-11-20 15:53:25 +0800278{
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -0300279 unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr");
Li Zefan079d3f62009-11-24 13:26:55 +0800280 struct alloc_stat *s_alloc, *s_caller;
281
Li Zefan079d3f62009-11-24 13:26:55 +0800282 s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp);
283 if (!s_alloc)
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300284 return 0;
Li Zefan079d3f62009-11-24 13:26:55 +0800285
Arnaldo Carvalho de Melo22ad7982012-08-07 10:56:43 -0300286 if ((short)sample->cpu != s_alloc->alloc_cpu) {
Li Zefan079d3f62009-11-24 13:26:55 +0800287 s_alloc->pingpong++;
288
289 s_caller = search_alloc_stat(0, s_alloc->call_site,
290 &root_caller_stat, callsite_cmp);
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300291 if (!s_caller)
292 return -1;
Li Zefan079d3f62009-11-24 13:26:55 +0800293 s_caller->pingpong++;
294 }
295 s_alloc->alloc_cpu = -1;
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300296
297 return 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800298}
299
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -0300300typedef int (*tracepoint_handler)(struct perf_evsel *evsel,
301 struct perf_sample *sample);
Li Zefanba77c9e2009-11-20 15:53:25 +0800302
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300303static int process_sample_event(struct perf_tool *tool __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200304 union perf_event *event,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200305 struct perf_sample *sample,
Arnaldo Carvalho de Melofcf65bf2012-08-07 09:58:03 -0300306 struct perf_evsel *evsel,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200307 struct machine *machine)
Li Zefanba77c9e2009-11-20 15:53:25 +0800308{
Adrian Hunteref893252013-08-27 11:23:06 +0300309 struct thread *thread = machine__findnew_thread(machine, sample->pid,
310 sample->pid);
Li Zefanba77c9e2009-11-20 15:53:25 +0800311
Li Zefanba77c9e2009-11-20 15:53:25 +0800312 if (thread == NULL) {
313 pr_debug("problem processing %d event, skipping it.\n",
314 event->header.type);
315 return -1;
316 }
317
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +0200318 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
Li Zefanba77c9e2009-11-20 15:53:25 +0800319
Arnaldo Carvalho de Melo744a9712013-11-06 10:17:38 -0300320 if (evsel->handler != NULL) {
321 tracepoint_handler f = evsel->handler;
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -0300322 return f(evsel, sample);
323 }
324
325 return 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800326}
327
Arnaldo Carvalho de Melofcf65bf2012-08-07 09:58:03 -0300328static struct perf_tool perf_kmem = {
329 .sample = process_sample_event,
330 .comm = perf_event__process_comm,
331 .ordered_samples = true,
Li Zefanba77c9e2009-11-20 15:53:25 +0800332};
333
Li Zefanba77c9e2009-11-20 15:53:25 +0800334static double fragmentation(unsigned long n_req, unsigned long n_alloc)
335{
336 if (n_alloc == 0)
337 return 0.0;
338 else
339 return 100.0 - (100.0 * n_req / n_alloc);
340}
341
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200342static void __print_result(struct rb_root *root, struct perf_session *session,
343 int n_lines, int is_caller)
Li Zefanba77c9e2009-11-20 15:53:25 +0800344{
345 struct rb_node *next;
Arnaldo Carvalho de Melo34ba5122012-12-19 09:04:24 -0300346 struct machine *machine = &session->machines.host;
Li Zefanba77c9e2009-11-20 15:53:25 +0800347
Li Zefan079d3f62009-11-24 13:26:55 +0800348 printf("%.102s\n", graph_dotted_line);
349 printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr");
Pekka Enberg47103272010-01-19 19:23:23 +0200350 printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n");
Li Zefan079d3f62009-11-24 13:26:55 +0800351 printf("%.102s\n", graph_dotted_line);
Li Zefanba77c9e2009-11-20 15:53:25 +0800352
353 next = rb_first(root);
354
355 while (next && n_lines--) {
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200356 struct alloc_stat *data = rb_entry(next, struct alloc_stat,
357 node);
358 struct symbol *sym = NULL;
Arnaldo Carvalho de Melo71cf8b82010-04-01 21:24:38 -0300359 struct map *map;
Li Zefan079d3f62009-11-24 13:26:55 +0800360 char buf[BUFSIZ];
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200361 u64 addr;
Li Zefanba77c9e2009-11-20 15:53:25 +0800362
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200363 if (is_caller) {
364 addr = data->call_site;
Li Zefan7707b6b2009-11-24 13:25:48 +0800365 if (!raw_ip)
Arnaldo Carvalho de Melo5c0541d2010-04-29 15:25:23 -0300366 sym = machine__find_kernel_function(machine, addr, &map, NULL);
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200367 } else
368 addr = data->ptr;
Li Zefanba77c9e2009-11-20 15:53:25 +0800369
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200370 if (sym != NULL)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200371 snprintf(buf, sizeof(buf), "%s+%" PRIx64 "", sym->name,
Arnaldo Carvalho de Melo71cf8b82010-04-01 21:24:38 -0300372 addr - map->unmap_ip(map, sym->start));
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200373 else
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200374 snprintf(buf, sizeof(buf), "%#" PRIx64 "", addr);
Li Zefan079d3f62009-11-24 13:26:55 +0800375 printf(" %-34s |", buf);
Arnaldo Carvalho de Melo1b145ae2009-11-23 17:51:09 -0200376
Pekka Enberg47103272010-01-19 19:23:23 +0200377 printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n",
Li Zefan079d3f62009-11-24 13:26:55 +0800378 (unsigned long long)data->bytes_alloc,
Li Zefanba77c9e2009-11-20 15:53:25 +0800379 (unsigned long)data->bytes_alloc / data->hit,
380 (unsigned long long)data->bytes_req,
381 (unsigned long)data->bytes_req / data->hit,
382 (unsigned long)data->hit,
Li Zefan079d3f62009-11-24 13:26:55 +0800383 (unsigned long)data->pingpong,
Li Zefanba77c9e2009-11-20 15:53:25 +0800384 fragmentation(data->bytes_req, data->bytes_alloc));
385
386 next = rb_next(next);
387 }
388
389 if (n_lines == -1)
Li Zefan079d3f62009-11-24 13:26:55 +0800390 printf(" ... | ... | ... | ... | ... | ... \n");
Li Zefanba77c9e2009-11-20 15:53:25 +0800391
Li Zefan079d3f62009-11-24 13:26:55 +0800392 printf("%.102s\n", graph_dotted_line);
Li Zefanba77c9e2009-11-20 15:53:25 +0800393}
394
395static void print_summary(void)
396{
397 printf("\nSUMMARY\n=======\n");
398 printf("Total bytes requested: %lu\n", total_requested);
399 printf("Total bytes allocated: %lu\n", total_allocated);
400 printf("Total bytes wasted on internal fragmentation: %lu\n",
401 total_allocated - total_requested);
402 printf("Internal fragmentation: %f%%\n",
403 fragmentation(total_requested, total_allocated));
Li Zefan7d0d3942009-11-24 13:26:31 +0800404 printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs);
Li Zefanba77c9e2009-11-20 15:53:25 +0800405}
406
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200407static void print_result(struct perf_session *session)
Li Zefanba77c9e2009-11-20 15:53:25 +0800408{
409 if (caller_flag)
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200410 __print_result(&root_caller_sorted, session, caller_lines, 1);
Li Zefanba77c9e2009-11-20 15:53:25 +0800411 if (alloc_flag)
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200412 __print_result(&root_alloc_sorted, session, alloc_lines, 0);
Li Zefanba77c9e2009-11-20 15:53:25 +0800413 print_summary();
414}
415
Li Zefan29b3e152009-11-24 13:26:10 +0800416struct sort_dimension {
417 const char name[20];
418 sort_fn_t cmp;
419 struct list_head list;
420};
421
422static LIST_HEAD(caller_sort);
423static LIST_HEAD(alloc_sort);
424
Li Zefanba77c9e2009-11-20 15:53:25 +0800425static void sort_insert(struct rb_root *root, struct alloc_stat *data,
Li Zefan29b3e152009-11-24 13:26:10 +0800426 struct list_head *sort_list)
Li Zefanba77c9e2009-11-20 15:53:25 +0800427{
428 struct rb_node **new = &(root->rb_node);
429 struct rb_node *parent = NULL;
Li Zefan29b3e152009-11-24 13:26:10 +0800430 struct sort_dimension *sort;
Li Zefanba77c9e2009-11-20 15:53:25 +0800431
432 while (*new) {
433 struct alloc_stat *this;
Li Zefan29b3e152009-11-24 13:26:10 +0800434 int cmp = 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800435
436 this = rb_entry(*new, struct alloc_stat, node);
437 parent = *new;
438
Li Zefan29b3e152009-11-24 13:26:10 +0800439 list_for_each_entry(sort, sort_list, list) {
440 cmp = sort->cmp(data, this);
441 if (cmp)
442 break;
443 }
Li Zefanba77c9e2009-11-20 15:53:25 +0800444
445 if (cmp > 0)
446 new = &((*new)->rb_left);
447 else
448 new = &((*new)->rb_right);
449 }
450
451 rb_link_node(&data->node, parent, new);
452 rb_insert_color(&data->node, root);
453}
454
455static void __sort_result(struct rb_root *root, struct rb_root *root_sorted,
Li Zefan29b3e152009-11-24 13:26:10 +0800456 struct list_head *sort_list)
Li Zefanba77c9e2009-11-20 15:53:25 +0800457{
458 struct rb_node *node;
459 struct alloc_stat *data;
460
461 for (;;) {
462 node = rb_first(root);
463 if (!node)
464 break;
465
466 rb_erase(node, root);
467 data = rb_entry(node, struct alloc_stat, node);
Li Zefan29b3e152009-11-24 13:26:10 +0800468 sort_insert(root_sorted, data, sort_list);
Li Zefanba77c9e2009-11-20 15:53:25 +0800469 }
470}
471
472static void sort_result(void)
473{
Li Zefan29b3e152009-11-24 13:26:10 +0800474 __sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort);
475 __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort);
Li Zefanba77c9e2009-11-20 15:53:25 +0800476}
477
Feng Tang70cb4e92012-10-30 11:56:02 +0800478static int __cmd_kmem(void)
Li Zefanba77c9e2009-11-20 15:53:25 +0800479{
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -0200480 int err = -EINVAL;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -0300481 struct perf_session *session;
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -0300482 const struct perf_evsel_str_handler kmem_tracepoints[] = {
483 { "kmem:kmalloc", perf_evsel__process_alloc_event, },
484 { "kmem:kmem_cache_alloc", perf_evsel__process_alloc_event, },
485 { "kmem:kmalloc_node", perf_evsel__process_alloc_node_event, },
486 { "kmem:kmem_cache_alloc_node", perf_evsel__process_alloc_node_event, },
487 { "kmem:kfree", perf_evsel__process_free_event, },
488 { "kmem:kmem_cache_free", perf_evsel__process_free_event, },
489 };
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200490 struct perf_data_file file = {
491 .path = input_name,
492 .mode = PERF_DATA_MODE_READ,
493 };
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -0300494
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200495 session = perf_session__new(&file, false, &perf_kmem);
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200496 if (session == NULL)
497 return -ENOMEM;
Li Zefanba77c9e2009-11-20 15:53:25 +0800498
Arnaldo Carvalho de Meloe727ca72010-04-01 19:12:13 -0300499 if (perf_session__create_kernel_maps(session) < 0)
500 goto out_delete;
501
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -0200502 if (!perf_session__has_traces(session, "kmem record"))
503 goto out_delete;
504
Arnaldo Carvalho de Melo0f7d2f12012-09-24 10:46:54 -0300505 if (perf_session__set_tracepoints_handlers(session, kmem_tracepoints)) {
506 pr_err("Initializing perf session tracepoint handlers failed\n");
507 return -1;
508 }
509
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200510 setup_pager();
Arnaldo Carvalho de Melofcf65bf2012-08-07 09:58:03 -0300511 err = perf_session__process_events(session, &perf_kmem);
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200512 if (err != 0)
513 goto out_delete;
514 sort_result();
515 print_result(session);
516out_delete:
517 perf_session__delete(session);
518 return err;
Li Zefanba77c9e2009-11-20 15:53:25 +0800519}
520
Li Zefanba77c9e2009-11-20 15:53:25 +0800521static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r)
522{
523 if (l->ptr < r->ptr)
524 return -1;
525 else if (l->ptr > r->ptr)
526 return 1;
527 return 0;
528}
529
Li Zefan29b3e152009-11-24 13:26:10 +0800530static struct sort_dimension ptr_sort_dimension = {
531 .name = "ptr",
532 .cmp = ptr_cmp,
533};
534
Li Zefanba77c9e2009-11-20 15:53:25 +0800535static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r)
536{
537 if (l->call_site < r->call_site)
538 return -1;
539 else if (l->call_site > r->call_site)
540 return 1;
541 return 0;
542}
543
Li Zefan29b3e152009-11-24 13:26:10 +0800544static struct sort_dimension callsite_sort_dimension = {
545 .name = "callsite",
546 .cmp = callsite_cmp,
547};
548
Pekka Enbergf3ced7c2009-11-22 11:58:00 +0200549static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r)
550{
551 if (l->hit < r->hit)
552 return -1;
553 else if (l->hit > r->hit)
554 return 1;
555 return 0;
556}
557
Li Zefan29b3e152009-11-24 13:26:10 +0800558static struct sort_dimension hit_sort_dimension = {
559 .name = "hit",
560 .cmp = hit_cmp,
561};
562
Li Zefanba77c9e2009-11-20 15:53:25 +0800563static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r)
564{
565 if (l->bytes_alloc < r->bytes_alloc)
566 return -1;
567 else if (l->bytes_alloc > r->bytes_alloc)
568 return 1;
569 return 0;
570}
571
Li Zefan29b3e152009-11-24 13:26:10 +0800572static struct sort_dimension bytes_sort_dimension = {
573 .name = "bytes",
574 .cmp = bytes_cmp,
575};
576
Pekka Enbergf3ced7c2009-11-22 11:58:00 +0200577static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r)
578{
579 double x, y;
580
581 x = fragmentation(l->bytes_req, l->bytes_alloc);
582 y = fragmentation(r->bytes_req, r->bytes_alloc);
583
584 if (x < y)
585 return -1;
586 else if (x > y)
587 return 1;
588 return 0;
589}
590
Li Zefan29b3e152009-11-24 13:26:10 +0800591static struct sort_dimension frag_sort_dimension = {
592 .name = "frag",
593 .cmp = frag_cmp,
594};
595
Li Zefan079d3f62009-11-24 13:26:55 +0800596static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r)
597{
598 if (l->pingpong < r->pingpong)
599 return -1;
600 else if (l->pingpong > r->pingpong)
601 return 1;
602 return 0;
603}
604
605static struct sort_dimension pingpong_sort_dimension = {
606 .name = "pingpong",
607 .cmp = pingpong_cmp,
608};
609
Li Zefan29b3e152009-11-24 13:26:10 +0800610static struct sort_dimension *avail_sorts[] = {
611 &ptr_sort_dimension,
612 &callsite_sort_dimension,
613 &hit_sort_dimension,
614 &bytes_sort_dimension,
615 &frag_sort_dimension,
Li Zefan079d3f62009-11-24 13:26:55 +0800616 &pingpong_sort_dimension,
Li Zefan29b3e152009-11-24 13:26:10 +0800617};
618
Sasha Levin49e4ba52012-12-20 14:11:16 -0500619#define NUM_AVAIL_SORTS ((int)ARRAY_SIZE(avail_sorts))
Li Zefan29b3e152009-11-24 13:26:10 +0800620
621static int sort_dimension__add(const char *tok, struct list_head *list)
622{
623 struct sort_dimension *sort;
624 int i;
625
626 for (i = 0; i < NUM_AVAIL_SORTS; i++) {
627 if (!strcmp(avail_sorts[i]->name, tok)) {
Arnaldo Carvalho de Melo8d9233f2013-01-24 22:24:57 -0300628 sort = memdup(avail_sorts[i], sizeof(*avail_sorts[i]));
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300629 if (!sort) {
Arnaldo Carvalho de Melo8d9233f2013-01-24 22:24:57 -0300630 pr_err("%s: memdup failed\n", __func__);
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300631 return -1;
632 }
Li Zefan29b3e152009-11-24 13:26:10 +0800633 list_add_tail(&sort->list, list);
634 return 0;
635 }
636 }
637
638 return -1;
639}
640
641static int setup_sorting(struct list_head *sort_list, const char *arg)
642{
643 char *tok;
644 char *str = strdup(arg);
645
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300646 if (!str) {
647 pr_err("%s: strdup failed\n", __func__);
648 return -1;
649 }
Li Zefan29b3e152009-11-24 13:26:10 +0800650
651 while (true) {
652 tok = strsep(&str, ",");
653 if (!tok)
654 break;
655 if (sort_dimension__add(tok, sort_list) < 0) {
656 error("Unknown --sort key: '%s'", tok);
Namhyung Kim1b228592012-01-08 02:25:29 +0900657 free(str);
Li Zefan29b3e152009-11-24 13:26:10 +0800658 return -1;
659 }
660 }
661
662 free(str);
663 return 0;
664}
665
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300666static int parse_sort_opt(const struct option *opt __maybe_unused,
667 const char *arg, int unset __maybe_unused)
Li Zefanba77c9e2009-11-20 15:53:25 +0800668{
Li Zefanba77c9e2009-11-20 15:53:25 +0800669 if (!arg)
670 return -1;
671
Li Zefanba77c9e2009-11-20 15:53:25 +0800672 if (caller_flag > alloc_flag)
Li Zefan29b3e152009-11-24 13:26:10 +0800673 return setup_sorting(&caller_sort, arg);
Li Zefanba77c9e2009-11-20 15:53:25 +0800674 else
Li Zefan29b3e152009-11-24 13:26:10 +0800675 return setup_sorting(&alloc_sort, arg);
Li Zefanba77c9e2009-11-20 15:53:25 +0800676
677 return 0;
678}
679
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300680static int parse_caller_opt(const struct option *opt __maybe_unused,
681 const char *arg __maybe_unused,
682 int unset __maybe_unused)
Li Zefanba77c9e2009-11-20 15:53:25 +0800683{
Li Zefan90b86a92009-12-10 15:21:57 +0800684 caller_flag = (alloc_flag + 1);
685 return 0;
686}
Li Zefanba77c9e2009-11-20 15:53:25 +0800687
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300688static int parse_alloc_opt(const struct option *opt __maybe_unused,
689 const char *arg __maybe_unused,
690 int unset __maybe_unused)
Li Zefan90b86a92009-12-10 15:21:57 +0800691{
692 alloc_flag = (caller_flag + 1);
Li Zefanba77c9e2009-11-20 15:53:25 +0800693 return 0;
694}
695
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300696static int parse_line_opt(const struct option *opt __maybe_unused,
697 const char *arg, int unset __maybe_unused)
Li Zefanba77c9e2009-11-20 15:53:25 +0800698{
699 int lines;
700
701 if (!arg)
702 return -1;
703
704 lines = strtoul(arg, NULL, 10);
705
706 if (caller_flag > alloc_flag)
707 caller_lines = lines;
708 else
709 alloc_lines = lines;
710
711 return 0;
712}
713
Arnaldo Carvalho de Melo0433ffb2012-10-01 15:20:58 -0300714static int __cmd_record(int argc, const char **argv)
715{
716 const char * const record_args[] = {
Jiri Olsa4a4d3712013-06-05 13:37:21 +0200717 "record", "-a", "-R", "-c", "1",
Li Zefanba77c9e2009-11-20 15:53:25 +0800718 "-e", "kmem:kmalloc",
719 "-e", "kmem:kmalloc_node",
720 "-e", "kmem:kfree",
721 "-e", "kmem:kmem_cache_alloc",
722 "-e", "kmem:kmem_cache_alloc_node",
723 "-e", "kmem:kmem_cache_free",
Arnaldo Carvalho de Melo0433ffb2012-10-01 15:20:58 -0300724 };
Li Zefanba77c9e2009-11-20 15:53:25 +0800725 unsigned int rec_argc, i, j;
726 const char **rec_argv;
727
728 rec_argc = ARRAY_SIZE(record_args) + argc - 1;
729 rec_argv = calloc(rec_argc + 1, sizeof(char *));
730
Chris Samuelce47dc52010-11-13 13:35:06 +1100731 if (rec_argv == NULL)
732 return -ENOMEM;
733
Li Zefanba77c9e2009-11-20 15:53:25 +0800734 for (i = 0; i < ARRAY_SIZE(record_args); i++)
735 rec_argv[i] = strdup(record_args[i]);
736
737 for (j = 1; j < (unsigned int)argc; j++, i++)
738 rec_argv[i] = argv[j];
739
740 return cmd_record(i, rec_argv, NULL);
741}
742
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300743int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
Li Zefanba77c9e2009-11-20 15:53:25 +0800744{
Arnaldo Carvalho de Melo0433ffb2012-10-01 15:20:58 -0300745 const char * const default_sort_order = "frag,hit,bytes";
Arnaldo Carvalho de Melo0433ffb2012-10-01 15:20:58 -0300746 const struct option kmem_options[] = {
747 OPT_STRING('i', "input", &input_name, "file", "input file name"),
748 OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL,
749 "show per-callsite statistics", parse_caller_opt),
750 OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL,
751 "show per-allocation statistics", parse_alloc_opt),
752 OPT_CALLBACK('s', "sort", NULL, "key[,key2...]",
753 "sort by keys: ptr, call_site, bytes, hit, pingpong, frag",
754 parse_sort_opt),
755 OPT_CALLBACK('l', "line", NULL, "num", "show n lines", parse_line_opt),
756 OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"),
757 OPT_END()
758 };
759 const char * const kmem_usage[] = {
760 "perf kmem [<options>] {record|stat}",
761 NULL
762 };
Li Zefanba77c9e2009-11-20 15:53:25 +0800763 argc = parse_options(argc, argv, kmem_options, kmem_usage, 0);
764
Li Zefan90b86a92009-12-10 15:21:57 +0800765 if (!argc)
Li Zefanba77c9e2009-11-20 15:53:25 +0800766 usage_with_options(kmem_usage, kmem_options);
767
Arnaldo Carvalho de Melo655000e2009-12-15 20:04:40 -0200768 symbol__init();
769
Li Zefan90b86a92009-12-10 15:21:57 +0800770 if (!strncmp(argv[0], "rec", 3)) {
771 return __cmd_record(argc, argv);
772 } else if (!strcmp(argv[0], "stat")) {
Arnaldo Carvalho de Melo2814eb02012-09-08 22:53:06 -0300773 if (setup_cpunode_map())
774 return -1;
Li Zefanba77c9e2009-11-20 15:53:25 +0800775
Li Zefan90b86a92009-12-10 15:21:57 +0800776 if (list_empty(&caller_sort))
777 setup_sorting(&caller_sort, default_sort_order);
778 if (list_empty(&alloc_sort))
779 setup_sorting(&alloc_sort, default_sort_order);
Li Zefan7d0d3942009-11-24 13:26:31 +0800780
Feng Tang70cb4e92012-10-30 11:56:02 +0800781 return __cmd_kmem();
Pekka Enbergb00eca82010-01-19 19:26:11 +0200782 } else
783 usage_with_options(kmem_usage, kmem_options);
Li Zefan90b86a92009-12-10 15:21:57 +0800784
785 return 0;
Li Zefanba77c9e2009-11-20 15:53:25 +0800786}
787