4 #include "util/evlist.h"
5 #include "util/evsel.h"
7 #include "util/config.h"
8 #include "util/symbol.h"
9 #include "util/thread.h"
10 #include "util/header.h"
11 #include "util/session.h"
12 #include "util/tool.h"
13 #include "util/callchain.h"
14 #include "util/time-utils.h"
16 #include <subcmd/parse-options.h>
17 #include "util/trace-event.h"
18 #include "util/data.h"
19 #include "util/cpumap.h"
21 #include "util/debug.h"
23 #include <linux/kernel.h>
24 #include <linux/rbtree.h>
25 #include <linux/string.h>
31 #include "sane_ctype.h"
36 static long kmem_page_size
;
40 } kmem_default
= KMEM_SLAB
; /* for backward compatibility */
43 typedef int (*sort_fn_t
)(void *, void *);
45 static int alloc_flag
;
46 static int caller_flag
;
48 static int alloc_lines
= -1;
49 static int caller_lines
= -1;
67 static struct rb_root root_alloc_stat
;
68 static struct rb_root root_alloc_sorted
;
69 static struct rb_root root_caller_stat
;
70 static struct rb_root root_caller_sorted
;
72 static unsigned long total_requested
, total_allocated
, total_freed
;
73 static unsigned long nr_allocs
, nr_cross_allocs
;
75 /* filters for controlling start and stop of time of analysis */
76 static struct perf_time_interval ptime
;
79 static int insert_alloc_stat(unsigned long call_site
, unsigned long ptr
,
80 int bytes_req
, int bytes_alloc
, int cpu
)
82 struct rb_node
**node
= &root_alloc_stat
.rb_node
;
83 struct rb_node
*parent
= NULL
;
84 struct alloc_stat
*data
= NULL
;
88 data
= rb_entry(*node
, struct alloc_stat
, node
);
91 node
= &(*node
)->rb_right
;
92 else if (ptr
< data
->ptr
)
93 node
= &(*node
)->rb_left
;
98 if (data
&& data
->ptr
== ptr
) {
100 data
->bytes_req
+= bytes_req
;
101 data
->bytes_alloc
+= bytes_alloc
;
103 data
= malloc(sizeof(*data
));
105 pr_err("%s: malloc failed\n", __func__
);
111 data
->bytes_req
= bytes_req
;
112 data
->bytes_alloc
= bytes_alloc
;
114 rb_link_node(&data
->node
, parent
, node
);
115 rb_insert_color(&data
->node
, &root_alloc_stat
);
117 data
->call_site
= call_site
;
118 data
->alloc_cpu
= cpu
;
119 data
->last_alloc
= bytes_alloc
;
124 static int insert_caller_stat(unsigned long call_site
,
125 int bytes_req
, int bytes_alloc
)
127 struct rb_node
**node
= &root_caller_stat
.rb_node
;
128 struct rb_node
*parent
= NULL
;
129 struct alloc_stat
*data
= NULL
;
133 data
= rb_entry(*node
, struct alloc_stat
, node
);
135 if (call_site
> data
->call_site
)
136 node
= &(*node
)->rb_right
;
137 else if (call_site
< data
->call_site
)
138 node
= &(*node
)->rb_left
;
143 if (data
&& data
->call_site
== call_site
) {
145 data
->bytes_req
+= bytes_req
;
146 data
->bytes_alloc
+= bytes_alloc
;
148 data
= malloc(sizeof(*data
));
150 pr_err("%s: malloc failed\n", __func__
);
153 data
->call_site
= call_site
;
156 data
->bytes_req
= bytes_req
;
157 data
->bytes_alloc
= bytes_alloc
;
159 rb_link_node(&data
->node
, parent
, node
);
160 rb_insert_color(&data
->node
, &root_caller_stat
);
166 static int perf_evsel__process_alloc_event(struct perf_evsel
*evsel
,
167 struct perf_sample
*sample
)
169 unsigned long ptr
= perf_evsel__intval(evsel
, sample
, "ptr"),
170 call_site
= perf_evsel__intval(evsel
, sample
, "call_site");
171 int bytes_req
= perf_evsel__intval(evsel
, sample
, "bytes_req"),
172 bytes_alloc
= perf_evsel__intval(evsel
, sample
, "bytes_alloc");
174 if (insert_alloc_stat(call_site
, ptr
, bytes_req
, bytes_alloc
, sample
->cpu
) ||
175 insert_caller_stat(call_site
, bytes_req
, bytes_alloc
))
178 total_requested
+= bytes_req
;
179 total_allocated
+= bytes_alloc
;
185 static int perf_evsel__process_alloc_node_event(struct perf_evsel
*evsel
,
186 struct perf_sample
*sample
)
188 int ret
= perf_evsel__process_alloc_event(evsel
, sample
);
191 int node1
= cpu__get_node(sample
->cpu
),
192 node2
= perf_evsel__intval(evsel
, sample
, "node");
201 static int ptr_cmp(void *, void *);
202 static int slab_callsite_cmp(void *, void *);
204 static struct alloc_stat
*search_alloc_stat(unsigned long ptr
,
205 unsigned long call_site
,
206 struct rb_root
*root
,
209 struct rb_node
*node
= root
->rb_node
;
210 struct alloc_stat key
= { .ptr
= ptr
, .call_site
= call_site
};
213 struct alloc_stat
*data
;
216 data
= rb_entry(node
, struct alloc_stat
, node
);
218 cmp
= sort_fn(&key
, data
);
220 node
= node
->rb_left
;
222 node
= node
->rb_right
;
229 static int perf_evsel__process_free_event(struct perf_evsel
*evsel
,
230 struct perf_sample
*sample
)
232 unsigned long ptr
= perf_evsel__intval(evsel
, sample
, "ptr");
233 struct alloc_stat
*s_alloc
, *s_caller
;
235 s_alloc
= search_alloc_stat(ptr
, 0, &root_alloc_stat
, ptr_cmp
);
239 total_freed
+= s_alloc
->last_alloc
;
241 if ((short)sample
->cpu
!= s_alloc
->alloc_cpu
) {
244 s_caller
= search_alloc_stat(0, s_alloc
->call_site
,
249 s_caller
->pingpong
++;
251 s_alloc
->alloc_cpu
= -1;
256 static u64 total_page_alloc_bytes
;
257 static u64 total_page_free_bytes
;
258 static u64 total_page_nomatch_bytes
;
259 static u64 total_page_fail_bytes
;
260 static unsigned long nr_page_allocs
;
261 static unsigned long nr_page_frees
;
262 static unsigned long nr_page_fails
;
263 static unsigned long nr_page_nomatch
;
266 static bool live_page
;
267 static struct perf_session
*kmem_session
;
269 #define MAX_MIGRATE_TYPES 6
270 #define MAX_PAGE_ORDER 11
272 static int order_stats
[MAX_PAGE_ORDER
][MAX_MIGRATE_TYPES
];
280 unsigned migrate_type
;
287 static struct rb_root page_live_tree
;
288 static struct rb_root page_alloc_tree
;
289 static struct rb_root page_alloc_sorted
;
290 static struct rb_root page_caller_tree
;
291 static struct rb_root page_caller_sorted
;
299 static int nr_alloc_funcs
;
300 static struct alloc_func
*alloc_func_list
;
302 static int funcmp(const void *a
, const void *b
)
304 const struct alloc_func
*fa
= a
;
305 const struct alloc_func
*fb
= b
;
307 if (fa
->start
> fb
->start
)
313 static int callcmp(const void *a
, const void *b
)
315 const struct alloc_func
*fa
= a
;
316 const struct alloc_func
*fb
= b
;
318 if (fb
->start
<= fa
->start
&& fa
->end
< fb
->end
)
321 if (fa
->start
> fb
->start
)
327 static int build_alloc_func_list(void)
330 struct map
*kernel_map
;
332 struct rb_node
*node
;
333 struct alloc_func
*func
;
334 struct machine
*machine
= &kmem_session
->machines
.host
;
335 regex_t alloc_func_regex
;
336 const char pattern
[] = "^_?_?(alloc|get_free|get_zeroed)_pages?";
338 ret
= regcomp(&alloc_func_regex
, pattern
, REG_EXTENDED
);
342 regerror(ret
, &alloc_func_regex
, err
, sizeof(err
));
343 pr_err("Invalid regex: %s\n%s", pattern
, err
);
347 kernel_map
= machine__kernel_map(machine
);
348 if (map__load(kernel_map
) < 0) {
349 pr_err("cannot load kernel map\n");
353 map__for_each_symbol(kernel_map
, sym
, node
) {
354 if (regexec(&alloc_func_regex
, sym
->name
, 0, NULL
, 0))
357 func
= realloc(alloc_func_list
,
358 (nr_alloc_funcs
+ 1) * sizeof(*func
));
362 pr_debug("alloc func: %s\n", sym
->name
);
363 func
[nr_alloc_funcs
].start
= sym
->start
;
364 func
[nr_alloc_funcs
].end
= sym
->end
;
365 func
[nr_alloc_funcs
].name
= sym
->name
;
367 alloc_func_list
= func
;
371 qsort(alloc_func_list
, nr_alloc_funcs
, sizeof(*func
), funcmp
);
373 regfree(&alloc_func_regex
);
378 * Find first non-memory allocation function from callchain.
379 * The allocation functions are in the 'alloc_func_list'.
381 static u64
find_callsite(struct perf_evsel
*evsel
, struct perf_sample
*sample
)
383 struct addr_location al
;
384 struct machine
*machine
= &kmem_session
->machines
.host
;
385 struct callchain_cursor_node
*node
;
387 if (alloc_func_list
== NULL
) {
388 if (build_alloc_func_list() < 0)
392 al
.thread
= machine__findnew_thread(machine
, sample
->pid
, sample
->tid
);
393 sample__resolve_callchain(sample
, &callchain_cursor
, NULL
, evsel
, &al
, 16);
395 callchain_cursor_commit(&callchain_cursor
);
397 struct alloc_func key
, *caller
;
400 node
= callchain_cursor_current(&callchain_cursor
);
404 key
.start
= key
.end
= node
->ip
;
405 caller
= bsearch(&key
, alloc_func_list
, nr_alloc_funcs
,
406 sizeof(key
), callcmp
);
410 addr
= map__unmap_ip(node
->map
, node
->ip
);
416 pr_debug3("skipping alloc function: %s\n", caller
->name
);
418 callchain_cursor_advance(&callchain_cursor
);
422 pr_debug2("unknown callsite: %"PRIx64
"\n", sample
->ip
);
426 struct sort_dimension
{
429 struct list_head list
;
432 static LIST_HEAD(page_alloc_sort_input
);
433 static LIST_HEAD(page_caller_sort_input
);
435 static struct page_stat
*
436 __page_stat__findnew_page(struct page_stat
*pstat
, bool create
)
438 struct rb_node
**node
= &page_live_tree
.rb_node
;
439 struct rb_node
*parent
= NULL
;
440 struct page_stat
*data
;
446 data
= rb_entry(*node
, struct page_stat
, node
);
448 cmp
= data
->page
- pstat
->page
;
450 node
= &parent
->rb_left
;
452 node
= &parent
->rb_right
;
460 data
= zalloc(sizeof(*data
));
462 data
->page
= pstat
->page
;
463 data
->order
= pstat
->order
;
464 data
->gfp_flags
= pstat
->gfp_flags
;
465 data
->migrate_type
= pstat
->migrate_type
;
467 rb_link_node(&data
->node
, parent
, node
);
468 rb_insert_color(&data
->node
, &page_live_tree
);
474 static struct page_stat
*page_stat__find_page(struct page_stat
*pstat
)
476 return __page_stat__findnew_page(pstat
, false);
479 static struct page_stat
*page_stat__findnew_page(struct page_stat
*pstat
)
481 return __page_stat__findnew_page(pstat
, true);
484 static struct page_stat
*
485 __page_stat__findnew_alloc(struct page_stat
*pstat
, bool create
)
487 struct rb_node
**node
= &page_alloc_tree
.rb_node
;
488 struct rb_node
*parent
= NULL
;
489 struct page_stat
*data
;
490 struct sort_dimension
*sort
;
496 data
= rb_entry(*node
, struct page_stat
, node
);
498 list_for_each_entry(sort
, &page_alloc_sort_input
, list
) {
499 cmp
= sort
->cmp(pstat
, data
);
505 node
= &parent
->rb_left
;
507 node
= &parent
->rb_right
;
515 data
= zalloc(sizeof(*data
));
517 data
->page
= pstat
->page
;
518 data
->order
= pstat
->order
;
519 data
->gfp_flags
= pstat
->gfp_flags
;
520 data
->migrate_type
= pstat
->migrate_type
;
522 rb_link_node(&data
->node
, parent
, node
);
523 rb_insert_color(&data
->node
, &page_alloc_tree
);
529 static struct page_stat
*page_stat__find_alloc(struct page_stat
*pstat
)
531 return __page_stat__findnew_alloc(pstat
, false);
534 static struct page_stat
*page_stat__findnew_alloc(struct page_stat
*pstat
)
536 return __page_stat__findnew_alloc(pstat
, true);
539 static struct page_stat
*
540 __page_stat__findnew_caller(struct page_stat
*pstat
, bool create
)
542 struct rb_node
**node
= &page_caller_tree
.rb_node
;
543 struct rb_node
*parent
= NULL
;
544 struct page_stat
*data
;
545 struct sort_dimension
*sort
;
551 data
= rb_entry(*node
, struct page_stat
, node
);
553 list_for_each_entry(sort
, &page_caller_sort_input
, list
) {
554 cmp
= sort
->cmp(pstat
, data
);
560 node
= &parent
->rb_left
;
562 node
= &parent
->rb_right
;
570 data
= zalloc(sizeof(*data
));
572 data
->callsite
= pstat
->callsite
;
573 data
->order
= pstat
->order
;
574 data
->gfp_flags
= pstat
->gfp_flags
;
575 data
->migrate_type
= pstat
->migrate_type
;
577 rb_link_node(&data
->node
, parent
, node
);
578 rb_insert_color(&data
->node
, &page_caller_tree
);
584 static struct page_stat
*page_stat__find_caller(struct page_stat
*pstat
)
586 return __page_stat__findnew_caller(pstat
, false);
589 static struct page_stat
*page_stat__findnew_caller(struct page_stat
*pstat
)
591 return __page_stat__findnew_caller(pstat
, true);
594 static bool valid_page(u64 pfn_or_page
)
596 if (use_pfn
&& pfn_or_page
== -1UL)
598 if (!use_pfn
&& pfn_or_page
== 0)
606 char *human_readable
;
609 static struct gfp_flag
*gfps
;
612 static int gfpcmp(const void *a
, const void *b
)
614 const struct gfp_flag
*fa
= a
;
615 const struct gfp_flag
*fb
= b
;
617 return fa
->flags
- fb
->flags
;
620 /* see include/trace/events/mmflags.h */
621 static const struct {
622 const char *original
;
624 } gfp_compact_table
[] = {
625 { "GFP_TRANSHUGE", "THP" },
626 { "GFP_TRANSHUGE_LIGHT", "THL" },
627 { "GFP_HIGHUSER_MOVABLE", "HUM" },
628 { "GFP_HIGHUSER", "HU" },
630 { "GFP_TEMPORARY", "TMP" },
631 { "GFP_KERNEL_ACCOUNT", "KAC" },
632 { "GFP_KERNEL", "K" },
633 { "GFP_NOFS", "NF" },
634 { "GFP_ATOMIC", "A" },
635 { "GFP_NOIO", "NI" },
636 { "GFP_NOWAIT", "NW" },
638 { "__GFP_HIGHMEM", "HM" },
639 { "GFP_DMA32", "D32" },
640 { "__GFP_HIGH", "H" },
641 { "__GFP_ATOMIC", "_A" },
644 { "__GFP_COLD", "CO" },
645 { "__GFP_NOWARN", "NWR" },
646 { "__GFP_REPEAT", "R" },
647 { "__GFP_NOFAIL", "NF" },
648 { "__GFP_NORETRY", "NR" },
649 { "__GFP_COMP", "C" },
650 { "__GFP_ZERO", "Z" },
651 { "__GFP_NOMEMALLOC", "NMA" },
652 { "__GFP_MEMALLOC", "MA" },
653 { "__GFP_HARDWALL", "HW" },
654 { "__GFP_THISNODE", "TN" },
655 { "__GFP_RECLAIMABLE", "RC" },
656 { "__GFP_MOVABLE", "M" },
657 { "__GFP_ACCOUNT", "AC" },
658 { "__GFP_NOTRACK", "NT" },
659 { "__GFP_WRITE", "WR" },
660 { "__GFP_RECLAIM", "R" },
661 { "__GFP_DIRECT_RECLAIM", "DR" },
662 { "__GFP_KSWAPD_RECLAIM", "KR" },
665 static size_t max_gfp_len
;
667 static char *compact_gfp_flags(char *gfp_flags
)
669 char *orig_flags
= strdup(gfp_flags
);
670 char *new_flags
= NULL
;
671 char *str
, *pos
= NULL
;
674 if (orig_flags
== NULL
)
677 str
= strtok_r(orig_flags
, "|", &pos
);
683 for (i
= 0; i
< ARRAY_SIZE(gfp_compact_table
); i
++) {
684 if (strcmp(gfp_compact_table
[i
].original
, str
))
687 cpt
= gfp_compact_table
[i
].compact
;
688 new = realloc(new_flags
, len
+ strlen(cpt
) + 2);
697 strcpy(new_flags
, cpt
);
699 strcat(new_flags
, "|");
700 strcat(new_flags
, cpt
);
707 str
= strtok_r(NULL
, "|", &pos
);
710 if (max_gfp_len
< len
)
717 static char *compact_gfp_string(unsigned long gfp_flags
)
719 struct gfp_flag key
= {
722 struct gfp_flag
*gfp
;
724 gfp
= bsearch(&key
, gfps
, nr_gfps
, sizeof(*gfps
), gfpcmp
);
726 return gfp
->compact_str
;
731 static int parse_gfp_flags(struct perf_evsel
*evsel
, struct perf_sample
*sample
,
732 unsigned int gfp_flags
)
734 struct pevent_record record
= {
736 .data
= sample
->raw_data
,
737 .size
= sample
->raw_size
,
739 struct trace_seq seq
;
740 char *str
, *pos
= NULL
;
743 struct gfp_flag key
= {
747 if (bsearch(&key
, gfps
, nr_gfps
, sizeof(*gfps
), gfpcmp
))
751 trace_seq_init(&seq
);
752 pevent_event_info(&seq
, evsel
->tp_format
, &record
);
754 str
= strtok_r(seq
.buffer
, " ", &pos
);
756 if (!strncmp(str
, "gfp_flags=", 10)) {
757 struct gfp_flag
*new;
759 new = realloc(gfps
, (nr_gfps
+ 1) * sizeof(*gfps
));
766 new->flags
= gfp_flags
;
767 new->human_readable
= strdup(str
+ 10);
768 new->compact_str
= compact_gfp_flags(str
+ 10);
769 if (!new->human_readable
|| !new->compact_str
)
772 qsort(gfps
, nr_gfps
, sizeof(*gfps
), gfpcmp
);
775 str
= strtok_r(NULL
, " ", &pos
);
778 trace_seq_destroy(&seq
);
782 static int perf_evsel__process_page_alloc_event(struct perf_evsel
*evsel
,
783 struct perf_sample
*sample
)
786 unsigned int order
= perf_evsel__intval(evsel
, sample
, "order");
787 unsigned int gfp_flags
= perf_evsel__intval(evsel
, sample
, "gfp_flags");
788 unsigned int migrate_type
= perf_evsel__intval(evsel
, sample
,
790 u64 bytes
= kmem_page_size
<< order
;
792 struct page_stat
*pstat
;
793 struct page_stat
this = {
795 .gfp_flags
= gfp_flags
,
796 .migrate_type
= migrate_type
,
800 page
= perf_evsel__intval(evsel
, sample
, "pfn");
802 page
= perf_evsel__intval(evsel
, sample
, "page");
805 total_page_alloc_bytes
+= bytes
;
807 if (!valid_page(page
)) {
809 total_page_fail_bytes
+= bytes
;
814 if (parse_gfp_flags(evsel
, sample
, gfp_flags
) < 0)
817 callsite
= find_callsite(evsel
, sample
);
820 * This is to find the current page (with correct gfp flags and
821 * migrate type) at free event.
824 pstat
= page_stat__findnew_page(&this);
829 pstat
->alloc_bytes
+= bytes
;
830 pstat
->callsite
= callsite
;
833 pstat
= page_stat__findnew_alloc(&this);
838 pstat
->alloc_bytes
+= bytes
;
839 pstat
->callsite
= callsite
;
842 this.callsite
= callsite
;
843 pstat
= page_stat__findnew_caller(&this);
848 pstat
->alloc_bytes
+= bytes
;
850 order_stats
[order
][migrate_type
]++;
855 static int perf_evsel__process_page_free_event(struct perf_evsel
*evsel
,
856 struct perf_sample
*sample
)
859 unsigned int order
= perf_evsel__intval(evsel
, sample
, "order");
860 u64 bytes
= kmem_page_size
<< order
;
861 struct page_stat
*pstat
;
862 struct page_stat
this = {
867 page
= perf_evsel__intval(evsel
, sample
, "pfn");
869 page
= perf_evsel__intval(evsel
, sample
, "page");
872 total_page_free_bytes
+= bytes
;
875 pstat
= page_stat__find_page(&this);
877 pr_debug2("missing free at page %"PRIx64
" (order: %d)\n",
881 total_page_nomatch_bytes
+= bytes
;
886 this.gfp_flags
= pstat
->gfp_flags
;
887 this.migrate_type
= pstat
->migrate_type
;
888 this.callsite
= pstat
->callsite
;
890 rb_erase(&pstat
->node
, &page_live_tree
);
894 order_stats
[this.order
][this.migrate_type
]--;
896 pstat
= page_stat__find_alloc(&this);
901 pstat
->free_bytes
+= bytes
;
904 pstat
= page_stat__find_caller(&this);
909 pstat
->free_bytes
+= bytes
;
913 pstat
->alloc_bytes
-= bytes
;
915 if (pstat
->nr_alloc
== 0) {
916 rb_erase(&pstat
->node
, &page_caller_tree
);
924 static bool perf_kmem__skip_sample(struct perf_sample
*sample
)
926 /* skip sample based on time? */
927 if (perf_time__skip_sample(&ptime
, sample
->time
))
933 typedef int (*tracepoint_handler
)(struct perf_evsel
*evsel
,
934 struct perf_sample
*sample
);
936 static int process_sample_event(struct perf_tool
*tool __maybe_unused
,
937 union perf_event
*event
,
938 struct perf_sample
*sample
,
939 struct perf_evsel
*evsel
,
940 struct machine
*machine
)
943 struct thread
*thread
= machine__findnew_thread(machine
, sample
->pid
,
946 if (thread
== NULL
) {
947 pr_debug("problem processing %d event, skipping it.\n",
952 if (perf_kmem__skip_sample(sample
))
955 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread
), thread
->tid
);
957 if (evsel
->handler
!= NULL
) {
958 tracepoint_handler f
= evsel
->handler
;
959 err
= f(evsel
, sample
);
967 static struct perf_tool perf_kmem
= {
968 .sample
= process_sample_event
,
969 .comm
= perf_event__process_comm
,
970 .mmap
= perf_event__process_mmap
,
971 .mmap2
= perf_event__process_mmap2
,
972 .namespaces
= perf_event__process_namespaces
,
973 .ordered_events
= true,
976 static double fragmentation(unsigned long n_req
, unsigned long n_alloc
)
981 return 100.0 - (100.0 * n_req
/ n_alloc
);
984 static void __print_slab_result(struct rb_root
*root
,
985 struct perf_session
*session
,
986 int n_lines
, int is_caller
)
988 struct rb_node
*next
;
989 struct machine
*machine
= &session
->machines
.host
;
991 printf("%.105s\n", graph_dotted_line
);
992 printf(" %-34s |", is_caller
? "Callsite": "Alloc Ptr");
993 printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n");
994 printf("%.105s\n", graph_dotted_line
);
996 next
= rb_first(root
);
998 while (next
&& n_lines
--) {
999 struct alloc_stat
*data
= rb_entry(next
, struct alloc_stat
,
1001 struct symbol
*sym
= NULL
;
1007 addr
= data
->call_site
;
1009 sym
= machine__find_kernel_function(machine
, addr
, &map
);
1014 snprintf(buf
, sizeof(buf
), "%s+%" PRIx64
"", sym
->name
,
1015 addr
- map
->unmap_ip(map
, sym
->start
));
1017 snprintf(buf
, sizeof(buf
), "%#" PRIx64
"", addr
);
1018 printf(" %-34s |", buf
);
1020 printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %9lu | %6.3f%%\n",
1021 (unsigned long long)data
->bytes_alloc
,
1022 (unsigned long)data
->bytes_alloc
/ data
->hit
,
1023 (unsigned long long)data
->bytes_req
,
1024 (unsigned long)data
->bytes_req
/ data
->hit
,
1025 (unsigned long)data
->hit
,
1026 (unsigned long)data
->pingpong
,
1027 fragmentation(data
->bytes_req
, data
->bytes_alloc
));
1029 next
= rb_next(next
);
1033 printf(" ... | ... | ... | ... | ... | ... \n");
1035 printf("%.105s\n", graph_dotted_line
);
1038 static const char * const migrate_type_str
[] = {
1047 static void __print_page_alloc_result(struct perf_session
*session
, int n_lines
)
1049 struct rb_node
*next
= rb_first(&page_alloc_sorted
);
1050 struct machine
*machine
= &session
->machines
.host
;
1052 int gfp_len
= max(strlen("GFP flags"), max_gfp_len
);
1054 printf("\n%.105s\n", graph_dotted_line
);
1055 printf(" %-16s | %5s alloc (KB) | Hits | Order | Mig.type | %-*s | Callsite\n",
1056 use_pfn
? "PFN" : "Page", live_page
? "Live" : "Total",
1057 gfp_len
, "GFP flags");
1058 printf("%.105s\n", graph_dotted_line
);
1061 format
= " %16llu | %'16llu | %'9d | %5d | %8s | %-*s | %s\n";
1063 format
= " %016llx | %'16llu | %'9d | %5d | %8s | %-*s | %s\n";
1065 while (next
&& n_lines
--) {
1066 struct page_stat
*data
;
1072 data
= rb_entry(next
, struct page_stat
, node
);
1073 sym
= machine__find_kernel_function(machine
, data
->callsite
, &map
);
1077 scnprintf(buf
, sizeof(buf
), "%"PRIx64
, data
->callsite
);
1079 printf(format
, (unsigned long long)data
->page
,
1080 (unsigned long long)data
->alloc_bytes
/ 1024,
1081 data
->nr_alloc
, data
->order
,
1082 migrate_type_str
[data
->migrate_type
],
1083 gfp_len
, compact_gfp_string(data
->gfp_flags
), caller
);
1085 next
= rb_next(next
);
1088 if (n_lines
== -1) {
1089 printf(" ... | ... | ... | ... | ... | %-*s | ...\n",
1093 printf("%.105s\n", graph_dotted_line
);
1096 static void __print_page_caller_result(struct perf_session
*session
, int n_lines
)
1098 struct rb_node
*next
= rb_first(&page_caller_sorted
);
1099 struct machine
*machine
= &session
->machines
.host
;
1100 int gfp_len
= max(strlen("GFP flags"), max_gfp_len
);
1102 printf("\n%.105s\n", graph_dotted_line
);
1103 printf(" %5s alloc (KB) | Hits | Order | Mig.type | %-*s | Callsite\n",
1104 live_page
? "Live" : "Total", gfp_len
, "GFP flags");
1105 printf("%.105s\n", graph_dotted_line
);
1107 while (next
&& n_lines
--) {
1108 struct page_stat
*data
;
1114 data
= rb_entry(next
, struct page_stat
, node
);
1115 sym
= machine__find_kernel_function(machine
, data
->callsite
, &map
);
1119 scnprintf(buf
, sizeof(buf
), "%"PRIx64
, data
->callsite
);
1121 printf(" %'16llu | %'9d | %5d | %8s | %-*s | %s\n",
1122 (unsigned long long)data
->alloc_bytes
/ 1024,
1123 data
->nr_alloc
, data
->order
,
1124 migrate_type_str
[data
->migrate_type
],
1125 gfp_len
, compact_gfp_string(data
->gfp_flags
), caller
);
1127 next
= rb_next(next
);
1130 if (n_lines
== -1) {
1131 printf(" ... | ... | ... | ... | %-*s | ...\n",
1135 printf("%.105s\n", graph_dotted_line
);
1138 static void print_gfp_flags(void)
1143 printf("# GFP flags\n");
1144 printf("# ---------\n");
1145 for (i
= 0; i
< nr_gfps
; i
++) {
1146 printf("# %08x: %*s: %s\n", gfps
[i
].flags
,
1147 (int) max_gfp_len
, gfps
[i
].compact_str
,
1148 gfps
[i
].human_readable
);
1152 static void print_slab_summary(void)
1154 printf("\nSUMMARY (SLAB allocator)");
1155 printf("\n========================\n");
1156 printf("Total bytes requested: %'lu\n", total_requested
);
1157 printf("Total bytes allocated: %'lu\n", total_allocated
);
1158 printf("Total bytes freed: %'lu\n", total_freed
);
1159 if (total_allocated
> total_freed
) {
1160 printf("Net total bytes allocated: %'lu\n",
1161 total_allocated
- total_freed
);
1163 printf("Total bytes wasted on internal fragmentation: %'lu\n",
1164 total_allocated
- total_requested
);
1165 printf("Internal fragmentation: %f%%\n",
1166 fragmentation(total_requested
, total_allocated
));
1167 printf("Cross CPU allocations: %'lu/%'lu\n", nr_cross_allocs
, nr_allocs
);
1170 static void print_page_summary(void)
1173 u64 nr_alloc_freed
= nr_page_frees
- nr_page_nomatch
;
1174 u64 total_alloc_freed_bytes
= total_page_free_bytes
- total_page_nomatch_bytes
;
1176 printf("\nSUMMARY (page allocator)");
1177 printf("\n========================\n");
1178 printf("%-30s: %'16lu [ %'16"PRIu64
" KB ]\n", "Total allocation requests",
1179 nr_page_allocs
, total_page_alloc_bytes
/ 1024);
1180 printf("%-30s: %'16lu [ %'16"PRIu64
" KB ]\n", "Total free requests",
1181 nr_page_frees
, total_page_free_bytes
/ 1024);
1184 printf("%-30s: %'16"PRIu64
" [ %'16"PRIu64
" KB ]\n", "Total alloc+freed requests",
1185 nr_alloc_freed
, (total_alloc_freed_bytes
) / 1024);
1186 printf("%-30s: %'16"PRIu64
" [ %'16"PRIu64
" KB ]\n", "Total alloc-only requests",
1187 nr_page_allocs
- nr_alloc_freed
,
1188 (total_page_alloc_bytes
- total_alloc_freed_bytes
) / 1024);
1189 printf("%-30s: %'16lu [ %'16"PRIu64
" KB ]\n", "Total free-only requests",
1190 nr_page_nomatch
, total_page_nomatch_bytes
/ 1024);
1193 printf("%-30s: %'16lu [ %'16"PRIu64
" KB ]\n", "Total allocation failures",
1194 nr_page_fails
, total_page_fail_bytes
/ 1024);
1197 printf("%5s %12s %12s %12s %12s %12s\n", "Order", "Unmovable",
1198 "Reclaimable", "Movable", "Reserved", "CMA/Isolated");
1199 printf("%.5s %.12s %.12s %.12s %.12s %.12s\n", graph_dotted_line
,
1200 graph_dotted_line
, graph_dotted_line
, graph_dotted_line
,
1201 graph_dotted_line
, graph_dotted_line
);
1203 for (o
= 0; o
< MAX_PAGE_ORDER
; o
++) {
1205 for (m
= 0; m
< MAX_MIGRATE_TYPES
- 1; m
++) {
1206 if (order_stats
[o
][m
])
1207 printf(" %'12d", order_stats
[o
][m
]);
1209 printf(" %12c", '.');
1215 static void print_slab_result(struct perf_session
*session
)
1218 __print_slab_result(&root_caller_sorted
, session
, caller_lines
, 1);
1220 __print_slab_result(&root_alloc_sorted
, session
, alloc_lines
, 0);
1221 print_slab_summary();
1224 static void print_page_result(struct perf_session
*session
)
1226 if (caller_flag
|| alloc_flag
)
1229 __print_page_caller_result(session
, caller_lines
);
1231 __print_page_alloc_result(session
, alloc_lines
);
1232 print_page_summary();
1235 static void print_result(struct perf_session
*session
)
1238 print_slab_result(session
);
1240 print_page_result(session
);
1243 static LIST_HEAD(slab_caller_sort
);
1244 static LIST_HEAD(slab_alloc_sort
);
1245 static LIST_HEAD(page_caller_sort
);
1246 static LIST_HEAD(page_alloc_sort
);
1248 static void sort_slab_insert(struct rb_root
*root
, struct alloc_stat
*data
,
1249 struct list_head
*sort_list
)
1251 struct rb_node
**new = &(root
->rb_node
);
1252 struct rb_node
*parent
= NULL
;
1253 struct sort_dimension
*sort
;
1256 struct alloc_stat
*this;
1259 this = rb_entry(*new, struct alloc_stat
, node
);
1262 list_for_each_entry(sort
, sort_list
, list
) {
1263 cmp
= sort
->cmp(data
, this);
1269 new = &((*new)->rb_left
);
1271 new = &((*new)->rb_right
);
1274 rb_link_node(&data
->node
, parent
, new);
1275 rb_insert_color(&data
->node
, root
);
1278 static void __sort_slab_result(struct rb_root
*root
, struct rb_root
*root_sorted
,
1279 struct list_head
*sort_list
)
1281 struct rb_node
*node
;
1282 struct alloc_stat
*data
;
1285 node
= rb_first(root
);
1289 rb_erase(node
, root
);
1290 data
= rb_entry(node
, struct alloc_stat
, node
);
1291 sort_slab_insert(root_sorted
, data
, sort_list
);
1295 static void sort_page_insert(struct rb_root
*root
, struct page_stat
*data
,
1296 struct list_head
*sort_list
)
1298 struct rb_node
**new = &root
->rb_node
;
1299 struct rb_node
*parent
= NULL
;
1300 struct sort_dimension
*sort
;
1303 struct page_stat
*this;
1306 this = rb_entry(*new, struct page_stat
, node
);
1309 list_for_each_entry(sort
, sort_list
, list
) {
1310 cmp
= sort
->cmp(data
, this);
1316 new = &parent
->rb_left
;
1318 new = &parent
->rb_right
;
1321 rb_link_node(&data
->node
, parent
, new);
1322 rb_insert_color(&data
->node
, root
);
1325 static void __sort_page_result(struct rb_root
*root
, struct rb_root
*root_sorted
,
1326 struct list_head
*sort_list
)
1328 struct rb_node
*node
;
1329 struct page_stat
*data
;
1332 node
= rb_first(root
);
1336 rb_erase(node
, root
);
1337 data
= rb_entry(node
, struct page_stat
, node
);
1338 sort_page_insert(root_sorted
, data
, sort_list
);
1342 static void sort_result(void)
1345 __sort_slab_result(&root_alloc_stat
, &root_alloc_sorted
,
1347 __sort_slab_result(&root_caller_stat
, &root_caller_sorted
,
1352 __sort_page_result(&page_live_tree
, &page_alloc_sorted
,
1355 __sort_page_result(&page_alloc_tree
, &page_alloc_sorted
,
1358 __sort_page_result(&page_caller_tree
, &page_caller_sorted
,
1363 static int __cmd_kmem(struct perf_session
*session
)
1366 struct perf_evsel
*evsel
;
1367 const struct perf_evsel_str_handler kmem_tracepoints
[] = {
1368 /* slab allocator */
1369 { "kmem:kmalloc", perf_evsel__process_alloc_event
, },
1370 { "kmem:kmem_cache_alloc", perf_evsel__process_alloc_event
, },
1371 { "kmem:kmalloc_node", perf_evsel__process_alloc_node_event
, },
1372 { "kmem:kmem_cache_alloc_node", perf_evsel__process_alloc_node_event
, },
1373 { "kmem:kfree", perf_evsel__process_free_event
, },
1374 { "kmem:kmem_cache_free", perf_evsel__process_free_event
, },
1375 /* page allocator */
1376 { "kmem:mm_page_alloc", perf_evsel__process_page_alloc_event
, },
1377 { "kmem:mm_page_free", perf_evsel__process_page_free_event
, },
1380 if (!perf_session__has_traces(session
, "kmem record"))
1383 if (perf_session__set_tracepoints_handlers(session
, kmem_tracepoints
)) {
1384 pr_err("Initializing perf session tracepoint handlers failed\n");
1388 evlist__for_each_entry(session
->evlist
, evsel
) {
1389 if (!strcmp(perf_evsel__name(evsel
), "kmem:mm_page_alloc") &&
1390 perf_evsel__field(evsel
, "pfn")) {
1397 err
= perf_session__process_events(session
);
1399 pr_err("error during process events: %d\n", err
);
1403 print_result(session
);
1408 /* slab sort keys */
1409 static int ptr_cmp(void *a
, void *b
)
1411 struct alloc_stat
*l
= a
;
1412 struct alloc_stat
*r
= b
;
1414 if (l
->ptr
< r
->ptr
)
1416 else if (l
->ptr
> r
->ptr
)
1421 static struct sort_dimension ptr_sort_dimension
= {
1426 static int slab_callsite_cmp(void *a
, void *b
)
1428 struct alloc_stat
*l
= a
;
1429 struct alloc_stat
*r
= b
;
1431 if (l
->call_site
< r
->call_site
)
1433 else if (l
->call_site
> r
->call_site
)
1438 static struct sort_dimension callsite_sort_dimension
= {
1440 .cmp
= slab_callsite_cmp
,
1443 static int hit_cmp(void *a
, void *b
)
1445 struct alloc_stat
*l
= a
;
1446 struct alloc_stat
*r
= b
;
1448 if (l
->hit
< r
->hit
)
1450 else if (l
->hit
> r
->hit
)
1455 static struct sort_dimension hit_sort_dimension
= {
1460 static int bytes_cmp(void *a
, void *b
)
1462 struct alloc_stat
*l
= a
;
1463 struct alloc_stat
*r
= b
;
1465 if (l
->bytes_alloc
< r
->bytes_alloc
)
1467 else if (l
->bytes_alloc
> r
->bytes_alloc
)
1472 static struct sort_dimension bytes_sort_dimension
= {
1477 static int frag_cmp(void *a
, void *b
)
1480 struct alloc_stat
*l
= a
;
1481 struct alloc_stat
*r
= b
;
1483 x
= fragmentation(l
->bytes_req
, l
->bytes_alloc
);
1484 y
= fragmentation(r
->bytes_req
, r
->bytes_alloc
);
1493 static struct sort_dimension frag_sort_dimension
= {
1498 static int pingpong_cmp(void *a
, void *b
)
1500 struct alloc_stat
*l
= a
;
1501 struct alloc_stat
*r
= b
;
1503 if (l
->pingpong
< r
->pingpong
)
1505 else if (l
->pingpong
> r
->pingpong
)
1510 static struct sort_dimension pingpong_sort_dimension
= {
1512 .cmp
= pingpong_cmp
,
1515 /* page sort keys */
1516 static int page_cmp(void *a
, void *b
)
1518 struct page_stat
*l
= a
;
1519 struct page_stat
*r
= b
;
1521 if (l
->page
< r
->page
)
1523 else if (l
->page
> r
->page
)
1528 static struct sort_dimension page_sort_dimension
= {
1533 static int page_callsite_cmp(void *a
, void *b
)
1535 struct page_stat
*l
= a
;
1536 struct page_stat
*r
= b
;
1538 if (l
->callsite
< r
->callsite
)
1540 else if (l
->callsite
> r
->callsite
)
1545 static struct sort_dimension page_callsite_sort_dimension
= {
1547 .cmp
= page_callsite_cmp
,
1550 static int page_hit_cmp(void *a
, void *b
)
1552 struct page_stat
*l
= a
;
1553 struct page_stat
*r
= b
;
1555 if (l
->nr_alloc
< r
->nr_alloc
)
1557 else if (l
->nr_alloc
> r
->nr_alloc
)
1562 static struct sort_dimension page_hit_sort_dimension
= {
1564 .cmp
= page_hit_cmp
,
1567 static int page_bytes_cmp(void *a
, void *b
)
1569 struct page_stat
*l
= a
;
1570 struct page_stat
*r
= b
;
1572 if (l
->alloc_bytes
< r
->alloc_bytes
)
1574 else if (l
->alloc_bytes
> r
->alloc_bytes
)
1579 static struct sort_dimension page_bytes_sort_dimension
= {
1581 .cmp
= page_bytes_cmp
,
1584 static int page_order_cmp(void *a
, void *b
)
1586 struct page_stat
*l
= a
;
1587 struct page_stat
*r
= b
;
1589 if (l
->order
< r
->order
)
1591 else if (l
->order
> r
->order
)
1596 static struct sort_dimension page_order_sort_dimension
= {
1598 .cmp
= page_order_cmp
,
1601 static int migrate_type_cmp(void *a
, void *b
)
1603 struct page_stat
*l
= a
;
1604 struct page_stat
*r
= b
;
1606 /* for internal use to find free'd page */
1607 if (l
->migrate_type
== -1U)
1610 if (l
->migrate_type
< r
->migrate_type
)
1612 else if (l
->migrate_type
> r
->migrate_type
)
1617 static struct sort_dimension migrate_type_sort_dimension
= {
1619 .cmp
= migrate_type_cmp
,
1622 static int gfp_flags_cmp(void *a
, void *b
)
1624 struct page_stat
*l
= a
;
1625 struct page_stat
*r
= b
;
1627 /* for internal use to find free'd page */
1628 if (l
->gfp_flags
== -1U)
1631 if (l
->gfp_flags
< r
->gfp_flags
)
1633 else if (l
->gfp_flags
> r
->gfp_flags
)
1638 static struct sort_dimension gfp_flags_sort_dimension
= {
1640 .cmp
= gfp_flags_cmp
,
1643 static struct sort_dimension
*slab_sorts
[] = {
1644 &ptr_sort_dimension
,
1645 &callsite_sort_dimension
,
1646 &hit_sort_dimension
,
1647 &bytes_sort_dimension
,
1648 &frag_sort_dimension
,
1649 &pingpong_sort_dimension
,
1652 static struct sort_dimension
*page_sorts
[] = {
1653 &page_sort_dimension
,
1654 &page_callsite_sort_dimension
,
1655 &page_hit_sort_dimension
,
1656 &page_bytes_sort_dimension
,
1657 &page_order_sort_dimension
,
1658 &migrate_type_sort_dimension
,
1659 &gfp_flags_sort_dimension
,
1662 static int slab_sort_dimension__add(const char *tok
, struct list_head
*list
)
1664 struct sort_dimension
*sort
;
1667 for (i
= 0; i
< (int)ARRAY_SIZE(slab_sorts
); i
++) {
1668 if (!strcmp(slab_sorts
[i
]->name
, tok
)) {
1669 sort
= memdup(slab_sorts
[i
], sizeof(*slab_sorts
[i
]));
1671 pr_err("%s: memdup failed\n", __func__
);
1674 list_add_tail(&sort
->list
, list
);
1682 static int page_sort_dimension__add(const char *tok
, struct list_head
*list
)
1684 struct sort_dimension
*sort
;
1687 for (i
= 0; i
< (int)ARRAY_SIZE(page_sorts
); i
++) {
1688 if (!strcmp(page_sorts
[i
]->name
, tok
)) {
1689 sort
= memdup(page_sorts
[i
], sizeof(*page_sorts
[i
]));
1691 pr_err("%s: memdup failed\n", __func__
);
1694 list_add_tail(&sort
->list
, list
);
1702 static int setup_slab_sorting(struct list_head
*sort_list
, const char *arg
)
1705 char *str
= strdup(arg
);
1709 pr_err("%s: strdup failed\n", __func__
);
1714 tok
= strsep(&pos
, ",");
1717 if (slab_sort_dimension__add(tok
, sort_list
) < 0) {
1718 error("Unknown slab --sort key: '%s'", tok
);
1728 static int setup_page_sorting(struct list_head
*sort_list
, const char *arg
)
1731 char *str
= strdup(arg
);
1735 pr_err("%s: strdup failed\n", __func__
);
1740 tok
= strsep(&pos
, ",");
1743 if (page_sort_dimension__add(tok
, sort_list
) < 0) {
1744 error("Unknown page --sort key: '%s'", tok
);
1754 static int parse_sort_opt(const struct option
*opt __maybe_unused
,
1755 const char *arg
, int unset __maybe_unused
)
1760 if (kmem_page
> kmem_slab
||
1761 (kmem_page
== 0 && kmem_slab
== 0 && kmem_default
== KMEM_PAGE
)) {
1762 if (caller_flag
> alloc_flag
)
1763 return setup_page_sorting(&page_caller_sort
, arg
);
1765 return setup_page_sorting(&page_alloc_sort
, arg
);
1767 if (caller_flag
> alloc_flag
)
1768 return setup_slab_sorting(&slab_caller_sort
, arg
);
1770 return setup_slab_sorting(&slab_alloc_sort
, arg
);
1776 static int parse_caller_opt(const struct option
*opt __maybe_unused
,
1777 const char *arg __maybe_unused
,
1778 int unset __maybe_unused
)
1780 caller_flag
= (alloc_flag
+ 1);
1784 static int parse_alloc_opt(const struct option
*opt __maybe_unused
,
1785 const char *arg __maybe_unused
,
1786 int unset __maybe_unused
)
1788 alloc_flag
= (caller_flag
+ 1);
1792 static int parse_slab_opt(const struct option
*opt __maybe_unused
,
1793 const char *arg __maybe_unused
,
1794 int unset __maybe_unused
)
1796 kmem_slab
= (kmem_page
+ 1);
1800 static int parse_page_opt(const struct option
*opt __maybe_unused
,
1801 const char *arg __maybe_unused
,
1802 int unset __maybe_unused
)
1804 kmem_page
= (kmem_slab
+ 1);
1808 static int parse_line_opt(const struct option
*opt __maybe_unused
,
1809 const char *arg
, int unset __maybe_unused
)
1816 lines
= strtoul(arg
, NULL
, 10);
1818 if (caller_flag
> alloc_flag
)
1819 caller_lines
= lines
;
1821 alloc_lines
= lines
;
1826 static int __cmd_record(int argc
, const char **argv
)
1828 const char * const record_args
[] = {
1829 "record", "-a", "-R", "-c", "1",
1831 const char * const slab_events
[] = {
1832 "-e", "kmem:kmalloc",
1833 "-e", "kmem:kmalloc_node",
1835 "-e", "kmem:kmem_cache_alloc",
1836 "-e", "kmem:kmem_cache_alloc_node",
1837 "-e", "kmem:kmem_cache_free",
1839 const char * const page_events
[] = {
1840 "-e", "kmem:mm_page_alloc",
1841 "-e", "kmem:mm_page_free",
1843 unsigned int rec_argc
, i
, j
;
1844 const char **rec_argv
;
1846 rec_argc
= ARRAY_SIZE(record_args
) + argc
- 1;
1848 rec_argc
+= ARRAY_SIZE(slab_events
);
1850 rec_argc
+= ARRAY_SIZE(page_events
) + 1; /* for -g */
1852 rec_argv
= calloc(rec_argc
+ 1, sizeof(char *));
1854 if (rec_argv
== NULL
)
1857 for (i
= 0; i
< ARRAY_SIZE(record_args
); i
++)
1858 rec_argv
[i
] = strdup(record_args
[i
]);
1861 for (j
= 0; j
< ARRAY_SIZE(slab_events
); j
++, i
++)
1862 rec_argv
[i
] = strdup(slab_events
[j
]);
1865 rec_argv
[i
++] = strdup("-g");
1867 for (j
= 0; j
< ARRAY_SIZE(page_events
); j
++, i
++)
1868 rec_argv
[i
] = strdup(page_events
[j
]);
1871 for (j
= 1; j
< (unsigned int)argc
; j
++, i
++)
1872 rec_argv
[i
] = argv
[j
];
1874 return cmd_record(i
, rec_argv
);
1877 static int kmem_config(const char *var
, const char *value
, void *cb __maybe_unused
)
1879 if (!strcmp(var
, "kmem.default")) {
1880 if (!strcmp(value
, "slab"))
1881 kmem_default
= KMEM_SLAB
;
1882 else if (!strcmp(value
, "page"))
1883 kmem_default
= KMEM_PAGE
;
1885 pr_err("invalid default value ('slab' or 'page' required): %s\n",
1893 int cmd_kmem(int argc
, const char **argv
)
1895 const char * const default_slab_sort
= "frag,hit,bytes";
1896 const char * const default_page_sort
= "bytes,hit";
1897 struct perf_data_file file
= {
1898 .mode
= PERF_DATA_MODE_READ
,
1900 const struct option kmem_options
[] = {
1901 OPT_STRING('i', "input", &input_name
, "file", "input file name"),
1902 OPT_INCR('v', "verbose", &verbose
,
1903 "be more verbose (show symbol address, etc)"),
1904 OPT_CALLBACK_NOOPT(0, "caller", NULL
, NULL
,
1905 "show per-callsite statistics", parse_caller_opt
),
1906 OPT_CALLBACK_NOOPT(0, "alloc", NULL
, NULL
,
1907 "show per-allocation statistics", parse_alloc_opt
),
1908 OPT_CALLBACK('s', "sort", NULL
, "key[,key2...]",
1909 "sort by keys: ptr, callsite, bytes, hit, pingpong, frag, "
1910 "page, order, migtype, gfp", parse_sort_opt
),
1911 OPT_CALLBACK('l', "line", NULL
, "num", "show n lines", parse_line_opt
),
1912 OPT_BOOLEAN(0, "raw-ip", &raw_ip
, "show raw ip instead of symbol"),
1913 OPT_BOOLEAN('f', "force", &file
.force
, "don't complain, do it"),
1914 OPT_CALLBACK_NOOPT(0, "slab", NULL
, NULL
, "Analyze slab allocator",
1916 OPT_CALLBACK_NOOPT(0, "page", NULL
, NULL
, "Analyze page allocator",
1918 OPT_BOOLEAN(0, "live", &live_page
, "Show live page stat"),
1919 OPT_STRING(0, "time", &time_str
, "str",
1920 "Time span of interest (start,stop)"),
1923 const char *const kmem_subcommands
[] = { "record", "stat", NULL
};
1924 const char *kmem_usage
[] = {
1928 struct perf_session
*session
;
1929 const char errmsg
[] = "No %s allocation events found. Have you run 'perf kmem record --%s'?\n";
1930 int ret
= perf_config(kmem_config
, NULL
);
1935 argc
= parse_options_subcommand(argc
, argv
, kmem_options
,
1936 kmem_subcommands
, kmem_usage
, 0);
1939 usage_with_options(kmem_usage
, kmem_options
);
1941 if (kmem_slab
== 0 && kmem_page
== 0) {
1942 if (kmem_default
== KMEM_SLAB
)
1948 if (!strncmp(argv
[0], "rec", 3)) {
1950 return __cmd_record(argc
, argv
);
1953 file
.path
= input_name
;
1955 kmem_session
= session
= perf_session__new(&file
, false, &perf_kmem
);
1956 if (session
== NULL
)
1962 if (!perf_evlist__find_tracepoint_by_name(session
->evlist
,
1964 pr_err(errmsg
, "slab", "slab");
1970 struct perf_evsel
*evsel
;
1972 evsel
= perf_evlist__find_tracepoint_by_name(session
->evlist
,
1973 "kmem:mm_page_alloc");
1974 if (evsel
== NULL
) {
1975 pr_err(errmsg
, "page", "page");
1979 kmem_page_size
= pevent_get_page_size(evsel
->tp_format
->pevent
);
1980 symbol_conf
.use_callchain
= true;
1983 symbol__init(&session
->header
.env
);
1985 if (perf_time__parse_str(&ptime
, time_str
) != 0) {
1986 pr_err("Invalid time string\n");
1990 if (!strcmp(argv
[0], "stat")) {
1991 setlocale(LC_ALL
, "");
1993 if (cpu__setup_cpunode_map())
1996 if (list_empty(&slab_caller_sort
))
1997 setup_slab_sorting(&slab_caller_sort
, default_slab_sort
);
1998 if (list_empty(&slab_alloc_sort
))
1999 setup_slab_sorting(&slab_alloc_sort
, default_slab_sort
);
2000 if (list_empty(&page_caller_sort
))
2001 setup_page_sorting(&page_caller_sort
, default_page_sort
);
2002 if (list_empty(&page_alloc_sort
))
2003 setup_page_sorting(&page_alloc_sort
, default_page_sort
);
2006 setup_page_sorting(&page_alloc_sort_input
,
2007 "page,order,migtype,gfp");
2008 setup_page_sorting(&page_caller_sort_input
,
2009 "callsite,order,migtype,gfp");
2011 ret
= __cmd_kmem(session
);
2013 usage_with_options(kmem_usage
, kmem_options
);
2016 perf_session__delete(session
);