1#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"
  9#include "util/session.h"
 10#include "util/tool.h"
 
 
 
 11
 12#include "util/parse-options.h"
 
 13#include "util/trace-event.h"
 
 
 14
 15#include "util/debug.h"
 
 16
 
 
 17#include <linux/rbtree.h>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 18
 19struct alloc_stat;
 20typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *);
 21
 22static const char		*input_name;
 23
 24static int			alloc_flag;
 25static int			caller_flag;
 26
 27static int			alloc_lines = -1;
 28static int			caller_lines = -1;
 29
 30static bool			raw_ip;
 31
 32static char			default_sort_order[] = "frag,hit,bytes";
 33
 34static int			*cpunode_map;
 35static int			max_cpu_num;
 36
 37struct alloc_stat {
 38	u64	call_site;
 39	u64	ptr;
 40	u64	bytes_req;
 41	u64	bytes_alloc;
 
 42	u32	hit;
 43	u32	pingpong;
 44
 45	short	alloc_cpu;
 46
 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;
 56static unsigned long nr_allocs, nr_cross_allocs;
 57
 58#define PATH_SYS_NODE	"/sys/devices/system/node"
 59
 60static void init_cpunode_map(void)
 61{
 62	FILE *fp;
 63	int i;
 64
 65	fp = fopen("/sys/devices/system/cpu/kernel_max", "r");
 66	if (!fp) {
 67		max_cpu_num = 4096;
 68		return;
 69	}
 70
 71	if (fscanf(fp, "%d", &max_cpu_num) < 1)
 72		die("Failed to read 'kernel_max' from sysfs");
 73	max_cpu_num++;
 74
 75	cpunode_map = calloc(max_cpu_num, sizeof(int));
 76	if (!cpunode_map)
 77		die("calloc");
 78	for (i = 0; i < max_cpu_num; i++)
 79		cpunode_map[i] = -1;
 80	fclose(fp);
 81}
 82
 83static void setup_cpunode_map(void)
 84{
 85	struct dirent *dent1, *dent2;
 86	DIR *dir1, *dir2;
 87	unsigned int cpu, mem;
 88	char buf[PATH_MAX];
 89
 90	init_cpunode_map();
 91
 92	dir1 = opendir(PATH_SYS_NODE);
 93	if (!dir1)
 94		return;
 95
 96	while ((dent1 = readdir(dir1)) != NULL) {
 97		if (dent1->d_type != DT_DIR ||
 98		    sscanf(dent1->d_name, "node%u", &mem) < 1)
 99			continue;
100
101		snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name);
102		dir2 = opendir(buf);
103		if (!dir2)
104			continue;
105		while ((dent2 = readdir(dir2)) != NULL) {
106			if (dent2->d_type != DT_LNK ||
107			    sscanf(dent2->d_name, "cpu%u", &cpu) < 1)
108				continue;
109			cpunode_map[cpu] = mem;
110		}
111		closedir(dir2);
112	}
113	closedir(dir1);
114}
115
116static void insert_alloc_stat(unsigned long call_site, unsigned long ptr,
117			      int bytes_req, int bytes_alloc, int cpu)
118{
119	struct rb_node **node = &root_alloc_stat.rb_node;
120	struct rb_node *parent = NULL;
121	struct alloc_stat *data = NULL;
122
123	while (*node) {
124		parent = *node;
125		data = rb_entry(*node, struct alloc_stat, node);
126
127		if (ptr > data->ptr)
128			node = &(*node)->rb_right;
129		else if (ptr < data->ptr)
130			node = &(*node)->rb_left;
131		else
132			break;
133	}
134
135	if (data && data->ptr == ptr) {
136		data->hit++;
137		data->bytes_req += bytes_req;
138		data->bytes_alloc += bytes_alloc;
139	} else {
140		data = malloc(sizeof(*data));
141		if (!data)
142			die("malloc");
 
 
143		data->ptr = ptr;
144		data->pingpong = 0;
145		data->hit = 1;
146		data->bytes_req = bytes_req;
147		data->bytes_alloc = bytes_alloc;
148
149		rb_link_node(&data->node, parent, node);
150		rb_insert_color(&data->node, &root_alloc_stat);
151	}
152	data->call_site = call_site;
153	data->alloc_cpu = cpu;
 
 
 
154}
155
156static void insert_caller_stat(unsigned long call_site,
157			      int bytes_req, int bytes_alloc)
158{
159	struct rb_node **node = &root_caller_stat.rb_node;
160	struct rb_node *parent = NULL;
161	struct alloc_stat *data = NULL;
162
163	while (*node) {
164		parent = *node;
165		data = rb_entry(*node, struct alloc_stat, node);
166
167		if (call_site > data->call_site)
168			node = &(*node)->rb_right;
169		else if (call_site < data->call_site)
170			node = &(*node)->rb_left;
171		else
172			break;
173	}
174
175	if (data && data->call_site == call_site) {
176		data->hit++;
177		data->bytes_req += bytes_req;
178		data->bytes_alloc += bytes_alloc;
179	} else {
180		data = malloc(sizeof(*data));
181		if (!data)
182			die("malloc");
 
 
183		data->call_site = call_site;
184		data->pingpong = 0;
185		data->hit = 1;
186		data->bytes_req = bytes_req;
187		data->bytes_alloc = bytes_alloc;
188
189		rb_link_node(&data->node, parent, node);
190		rb_insert_color(&data->node, &root_caller_stat);
191	}
 
 
192}
193
194static void process_alloc_event(void *data,
195				struct event_format *event,
196				int cpu,
197				u64 timestamp __used,
198				struct thread *thread __used,
199				int node)
200{
201	unsigned long call_site;
202	unsigned long ptr;
203	int bytes_req;
204	int bytes_alloc;
205	int node1, node2;
206
207	ptr = raw_field_value(event, "ptr", data);
208	call_site = raw_field_value(event, "call_site", data);
209	bytes_req = raw_field_value(event, "bytes_req", data);
210	bytes_alloc = raw_field_value(event, "bytes_alloc", data);
211
212	insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, cpu);
213	insert_caller_stat(call_site, bytes_req, bytes_alloc);
 
214
215	total_requested += bytes_req;
216	total_allocated += bytes_alloc;
217
218	if (node) {
219		node1 = cpunode_map[cpu];
220		node2 = raw_field_value(event, "node", data);
221		if (node1 != node2)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
222			nr_cross_allocs++;
223	}
224	nr_allocs++;
 
225}
226
227static int ptr_cmp(struct alloc_stat *, struct alloc_stat *);
228static int callsite_cmp(struct alloc_stat *, struct alloc_stat *);
229
230static struct alloc_stat *search_alloc_stat(unsigned long ptr,
231					    unsigned long call_site,
232					    struct rb_root *root,
233					    sort_fn_t sort_fn)
234{
235	struct rb_node *node = root->rb_node;
236	struct alloc_stat key = { .ptr = ptr, .call_site = call_site };
237
238	while (node) {
239		struct alloc_stat *data;
240		int cmp;
241
242		data = rb_entry(node, struct alloc_stat, node);
243
244		cmp = sort_fn(&key, data);
245		if (cmp < 0)
246			node = node->rb_left;
247		else if (cmp > 0)
248			node = node->rb_right;
249		else
250			return data;
251	}
252	return NULL;
253}
254
255static void process_free_event(void *data,
256			       struct event_format *event,
257			       int cpu,
258			       u64 timestamp __used,
259			       struct thread *thread __used)
260{
261	unsigned long ptr;
262	struct alloc_stat *s_alloc, *s_caller;
263
264	ptr = raw_field_value(event, "ptr", data);
265
266	s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp);
267	if (!s_alloc)
268		return;
269
270	if (cpu != s_alloc->alloc_cpu) {
 
 
271		s_alloc->pingpong++;
272
273		s_caller = search_alloc_stat(0, s_alloc->call_site,
274					     &root_caller_stat, callsite_cmp);
275		assert(s_caller);
 
 
276		s_caller->pingpong++;
277	}
278	s_alloc->alloc_cpu = -1;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
279}
280
281static void process_raw_event(union perf_event *raw_event __used, void *data,
282			      int cpu, u64 timestamp, struct thread *thread)
283{
284	struct event_format *event;
285	int type;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
286
287	type = trace_parse_common_type(data);
288	event = trace_find_event(type);
289
290	if (!strcmp(event->name, "kmalloc") ||
291	    !strcmp(event->name, "kmem_cache_alloc")) {
292		process_alloc_event(data, event, cpu, timestamp, thread, 0);
293		return;
 
 
 
 
 
 
 
 
294	}
295
296	if (!strcmp(event->name, "kmalloc_node") ||
297	    !strcmp(event->name, "kmem_cache_alloc_node")) {
298		process_alloc_event(data, event, cpu, timestamp, thread, 1);
299		return;
 
 
 
 
 
 
 
 
300	}
301
302	if (!strcmp(event->name, "kfree") ||
303	    !strcmp(event->name, "kmem_cache_free")) {
304		process_free_event(data, event, cpu, timestamp, thread);
305		return;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
306	}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
307}
308
309static int process_sample_event(struct perf_tool *tool __used,
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
310				union perf_event *event,
311				struct perf_sample *sample,
312				struct perf_evsel *evsel __used,
313				struct machine *machine)
314{
315	struct thread *thread = machine__findnew_thread(machine, event->ip.pid);
 
 
316
317	if (thread == NULL) {
318		pr_debug("problem processing %d event, skipping it.\n",
319			 event->header.type);
320		return -1;
321	}
322
323	dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
 
324
325	process_raw_event(event, sample->raw_data, sample->cpu,
326			  sample->time, thread);
327
328	return 0;
 
 
 
 
 
 
 
329}
330
331static struct perf_tool perf_kmem = {
332	.sample			= process_sample_event,
333	.comm			= perf_event__process_comm,
334	.ordered_samples	= true,
 
 
 
335};
336
337static double fragmentation(unsigned long n_req, unsigned long n_alloc)
338{
339	if (n_alloc == 0)
340		return 0.0;
341	else
342		return 100.0 - (100.0 * n_req / n_alloc);
343}
344
345static void __print_result(struct rb_root *root, struct perf_session *session,
346			   int n_lines, int is_caller)
 
347{
348	struct rb_node *next;
349	struct machine *machine;
350
351	printf("%.102s\n", graph_dotted_line);
352	printf(" %-34s |",  is_caller ? "Callsite": "Alloc Ptr");
353	printf(" Total_alloc/Per | Total_req/Per   | Hit      | Ping-pong | Frag\n");
354	printf("%.102s\n", graph_dotted_line);
355
356	next = rb_first(root);
357
358	machine = perf_session__find_host_machine(session);
359	if (!machine) {
360		pr_err("__print_result: couldn't find kernel information\n");
361		return;
362	}
363	while (next && n_lines--) {
364		struct alloc_stat *data = rb_entry(next, struct alloc_stat,
365						   node);
366		struct symbol *sym = NULL;
367		struct map *map;
368		char buf[BUFSIZ];
369		u64 addr;
370
371		if (is_caller) {
372			addr = data->call_site;
373			if (!raw_ip)
374				sym = machine__find_kernel_function(machine, addr, &map, NULL);
375		} else
376			addr = data->ptr;
377
378		if (sym != NULL)
379			snprintf(buf, sizeof(buf), "%s+%" PRIx64 "", sym->name,
380				 addr - map->unmap_ip(map, sym->start));
381		else
382			snprintf(buf, sizeof(buf), "%#" PRIx64 "", addr);
383		printf(" %-34s |", buf);
384
385		printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n",
386		       (unsigned long long)data->bytes_alloc,
387		       (unsigned long)data->bytes_alloc / data->hit,
388		       (unsigned long long)data->bytes_req,
389		       (unsigned long)data->bytes_req / data->hit,
390		       (unsigned long)data->hit,
391		       (unsigned long)data->pingpong,
392		       fragmentation(data->bytes_req, data->bytes_alloc));
393
394		next = rb_next(next);
395	}
396
397	if (n_lines == -1)
398		printf(" ...                                | ...             | ...             | ...    | ...      | ...   \n");
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
399
400	printf("%.102s\n", graph_dotted_line);
 
 
 
 
 
 
 
 
 
 
 
401}
402
403static void print_summary(void)
404{
405	printf("\nSUMMARY\n=======\n");
406	printf("Total bytes requested: %lu\n", total_requested);
407	printf("Total bytes allocated: %lu\n", total_allocated);
408	printf("Total bytes wasted on internal fragmentation: %lu\n",
 
 
 
 
 
 
409	       total_allocated - total_requested);
410	printf("Internal fragmentation: %f%%\n",
411	       fragmentation(total_requested, total_allocated));
412	printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs);
413}
414
415static void print_result(struct perf_session *session)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
416{
417	if (caller_flag)
418		__print_result(&root_caller_sorted, session, caller_lines, 1);
419	if (alloc_flag)
420		__print_result(&root_alloc_sorted, session, alloc_lines, 0);
421	print_summary();
422}
423
424struct sort_dimension {
425	const char		name[20];
426	sort_fn_t		cmp;
427	struct list_head	list;
428};
 
 
 
 
 
429
430static LIST_HEAD(caller_sort);
431static LIST_HEAD(alloc_sort);
 
 
 
 
 
432
433static void sort_insert(struct rb_root *root, struct alloc_stat *data,
434			struct list_head *sort_list)
 
 
 
 
 
435{
436	struct rb_node **new = &(root->rb_node);
437	struct rb_node *parent = NULL;
438	struct sort_dimension *sort;
439
440	while (*new) {
441		struct alloc_stat *this;
442		int cmp = 0;
443
444		this = rb_entry(*new, struct alloc_stat, node);
445		parent = *new;
446
447		list_for_each_entry(sort, sort_list, list) {
448			cmp = sort->cmp(data, this);
449			if (cmp)
450				break;
451		}
452
453		if (cmp > 0)
454			new = &((*new)->rb_left);
455		else
456			new = &((*new)->rb_right);
457	}
458
459	rb_link_node(&data->node, parent, new);
460	rb_insert_color(&data->node, root);
461}
462
463static void __sort_result(struct rb_root *root, struct rb_root *root_sorted,
464			  struct list_head *sort_list)
465{
466	struct rb_node *node;
467	struct alloc_stat *data;
468
469	for (;;) {
470		node = rb_first(root);
471		if (!node)
472			break;
473
474		rb_erase(node, root);
475		data = rb_entry(node, struct alloc_stat, node);
476		sort_insert(root_sorted, data, sort_list);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
477	}
478}
479
480static void sort_result(void)
481{
482	__sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort);
483	__sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
484}
485
486static int __cmd_kmem(void)
487{
488	int err = -EINVAL;
489	struct perf_session *session = perf_session__new(input_name, O_RDONLY,
490							 0, false, &perf_kmem);
491	if (session == NULL)
492		return -ENOMEM;
493
494	if (perf_session__create_kernel_maps(session) < 0)
495		goto out_delete;
 
 
 
 
 
 
496
497	if (!perf_session__has_traces(session, "kmem record"))
498		goto out_delete;
 
 
 
 
 
 
 
 
 
 
 
 
 
499
500	setup_pager();
501	err = perf_session__process_events(session, &perf_kmem);
502	if (err != 0)
503		goto out_delete;
 
 
504	sort_result();
505	print_result(session);
506out_delete:
507	perf_session__delete(session);
508	return err;
509}
510
511static const char * const kmem_usage[] = {
512	"perf kmem [<options>] {record|stat}",
513	NULL
514};
515
516static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r)
517{
 
 
 
518	if (l->ptr < r->ptr)
519		return -1;
520	else if (l->ptr > r->ptr)
521		return 1;
522	return 0;
523}
524
525static struct sort_dimension ptr_sort_dimension = {
526	.name	= "ptr",
527	.cmp	= ptr_cmp,
528};
529
530static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r)
531{
 
 
 
532	if (l->call_site < r->call_site)
533		return -1;
534	else if (l->call_site > r->call_site)
535		return 1;
536	return 0;
537}
538
539static struct sort_dimension callsite_sort_dimension = {
540	.name	= "callsite",
541	.cmp	= callsite_cmp,
542};
543
544static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r)
545{
 
 
 
546	if (l->hit < r->hit)
547		return -1;
548	else if (l->hit > r->hit)
549		return 1;
550	return 0;
551}
552
553static struct sort_dimension hit_sort_dimension = {
554	.name	= "hit",
555	.cmp	= hit_cmp,
556};
557
558static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r)
559{
 
 
 
560	if (l->bytes_alloc < r->bytes_alloc)
561		return -1;
562	else if (l->bytes_alloc > r->bytes_alloc)
563		return 1;
564	return 0;
565}
566
567static struct sort_dimension bytes_sort_dimension = {
568	.name	= "bytes",
569	.cmp	= bytes_cmp,
570};
571
572static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r)
573{
574	double x, y;
 
 
575
576	x = fragmentation(l->bytes_req, l->bytes_alloc);
577	y = fragmentation(r->bytes_req, r->bytes_alloc);
578
579	if (x < y)
580		return -1;
581	else if (x > y)
582		return 1;
583	return 0;
584}
585
586static struct sort_dimension frag_sort_dimension = {
587	.name	= "frag",
588	.cmp	= frag_cmp,
589};
590
591static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r)
592{
 
 
 
593	if (l->pingpong < r->pingpong)
594		return -1;
595	else if (l->pingpong > r->pingpong)
596		return 1;
597	return 0;
598}
599
600static struct sort_dimension pingpong_sort_dimension = {
601	.name	= "pingpong",
602	.cmp	= pingpong_cmp,
603};
604
605static struct sort_dimension *avail_sorts[] = {
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
606	&ptr_sort_dimension,
607	&callsite_sort_dimension,
608	&hit_sort_dimension,
609	&bytes_sort_dimension,
610	&frag_sort_dimension,
611	&pingpong_sort_dimension,
612};
613
614#define NUM_AVAIL_SORTS	\
615	(int)(sizeof(avail_sorts) / sizeof(struct sort_dimension *))
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
616
617static int sort_dimension__add(const char *tok, struct list_head *list)
 
 
 
618{
619	struct sort_dimension *sort;
620	int i;
621
622	for (i = 0; i < NUM_AVAIL_SORTS; i++) {
623		if (!strcmp(avail_sorts[i]->name, tok)) {
624			sort = malloc(sizeof(*sort));
625			if (!sort)
626				die("malloc");
627			memcpy(sort, avail_sorts[i], sizeof(*sort));
 
628			list_add_tail(&sort->list, list);
629			return 0;
630		}
631	}
632
633	return -1;
634}
635
636static int setup_sorting(struct list_head *sort_list, const char *arg)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
637{
638	char *tok;
639	char *str = strdup(arg);
 
640
641	if (!str)
642		die("strdup");
 
 
643
644	while (true) {
645		tok = strsep(&str, ",");
646		if (!tok)
647			break;
648		if (sort_dimension__add(tok, sort_list) < 0) {
649			error("Unknown --sort key: '%s'", tok);
650			free(str);
651			return -1;
652		}
653	}
654
655	free(str);
656	return 0;
657}
658
659static int parse_sort_opt(const struct option *opt __used,
660			  const char *arg, int unset __used)
661{
662	if (!arg)
663		return -1;
664
665	if (caller_flag > alloc_flag)
666		return setup_sorting(&caller_sort, arg);
667	else
668		return setup_sorting(&alloc_sort, arg);
 
 
 
 
 
 
 
 
669
670	return 0;
671}
672
673static int parse_caller_opt(const struct option *opt __used,
674			  const char *arg __used, int unset __used)
 
675{
676	caller_flag = (alloc_flag + 1);
677	return 0;
678}
679
680static int parse_alloc_opt(const struct option *opt __used,
681			  const char *arg __used, int unset __used)
 
682{
683	alloc_flag = (caller_flag + 1);
684	return 0;
685}
686
687static int parse_line_opt(const struct option *opt __used,
688			  const char *arg, int unset __used)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
689{
690	int lines;
691
692	if (!arg)
693		return -1;
694
695	lines = strtoul(arg, NULL, 10);
696
697	if (caller_flag > alloc_flag)
698		caller_lines = lines;
699	else
700		alloc_lines = lines;
701
702	return 0;
703}
704
705static const struct option kmem_options[] = {
706	OPT_STRING('i', "input", &input_name, "file",
707		   "input file name"),
708	OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL,
709			   "show per-callsite statistics",
710			   parse_caller_opt),
711	OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL,
712			   "show per-allocation statistics",
713			   parse_alloc_opt),
714	OPT_CALLBACK('s', "sort", NULL, "key[,key2...]",
715		     "sort by keys: ptr, call_site, bytes, hit, pingpong, frag",
716		     parse_sort_opt),
717	OPT_CALLBACK('l', "line", NULL, "num",
718		     "show n lines",
719		     parse_line_opt),
720	OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"),
721	OPT_END()
722};
723
724static const char *record_args[] = {
725	"record",
726	"-a",
727	"-R",
728	"-f",
729	"-c", "1",
730	"-e", "kmem:kmalloc",
731	"-e", "kmem:kmalloc_node",
732	"-e", "kmem:kfree",
733	"-e", "kmem:kmem_cache_alloc",
734	"-e", "kmem:kmem_cache_alloc_node",
735	"-e", "kmem:kmem_cache_free",
736};
737
738static int __cmd_record(int argc, const char **argv)
739{
 
 
 
 
 
740	unsigned int rec_argc, i, j;
741	const char **rec_argv;
 
742
743	rec_argc = ARRAY_SIZE(record_args) + argc - 1;
 
 
 
 
 
 
 
 
744	rec_argv = calloc(rec_argc + 1, sizeof(char *));
745
746	if (rec_argv == NULL)
747		return -ENOMEM;
748
749	for (i = 0; i < ARRAY_SIZE(record_args); i++)
750		rec_argv[i] = strdup(record_args[i]);
751
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
752	for (j = 1; j < (unsigned int)argc; j++, i++)
753		rec_argv[i] = argv[j];
754
755	return cmd_record(i, rec_argv, NULL);
756}
757
758int cmd_kmem(int argc, const char **argv, const char *prefix __used)
759{
760	argc = parse_options(argc, argv, kmem_options, kmem_usage, 0);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
761
762	if (!argc)
763		usage_with_options(kmem_usage, kmem_options);
764
765	symbol__init();
 
 
 
 
 
766
767	if (!strncmp(argv[0], "rec", 3)) {
 
768		return __cmd_record(argc, argv);
769	} else if (!strcmp(argv[0], "stat")) {
770		setup_cpunode_map();
771
772		if (list_empty(&caller_sort))
773			setup_sorting(&caller_sort, default_sort_order);
774		if (list_empty(&alloc_sort))
775			setup_sorting(&alloc_sort, default_sort_order);
776
777		return __cmd_kmem();
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
778	} else
779		usage_with_options(kmem_usage, kmem_options);
780
781	return 0;
 
 
 
782}
783