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authorIngo Molnar <mingo@elte.hu>2010-06-09 12:55:20 -0400
committerIngo Molnar <mingo@elte.hu>2010-06-09 12:55:57 -0400
commitc726b61c6a5acc54c55ed7a0e7638cc4c5a100a8 (patch)
tree3f44aa013d31d34951e9610e79ff14c1148ad6ac /kernel
parent7be7923633a142402266d642ccebf74f556a649b (diff)
parent018378c55b03f88ff513aba4e0e93b8d4a9cf241 (diff)
Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/core
Diffstat (limited to 'kernel')
-rw-r--r--kernel/perf_event.c5
-rw-r--r--kernel/trace/Kconfig37
-rw-r--r--kernel/trace/Makefile2
-rw-r--r--kernel/trace/kmemtrace.c529
-rw-r--r--kernel/trace/trace.c3
-rw-r--r--kernel/trace/trace.h20
-rw-r--r--kernel/trace/trace_boot.c185
-rw-r--r--kernel/trace/trace_entries.h62
-rw-r--r--kernel/trace/trace_event_perf.c2
-rw-r--r--kernel/trace/trace_sysprof.c7
10 files changed, 4 insertions, 848 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 97c73018592e..c772a3d4000d 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -2946,11 +2946,6 @@ __weak struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
2946 return NULL; 2946 return NULL;
2947} 2947}
2948 2948
2949__weak
2950void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int skip)
2951{
2952}
2953
2954 2949
2955/* 2950/*
2956 * We assume there is only KVM supporting the callbacks. 2951 * We assume there is only KVM supporting the callbacks.
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 8b1797c4545b..f669092fdead 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -229,23 +229,6 @@ config FTRACE_SYSCALLS
229 help 229 help
230 Basic tracer to catch the syscall entry and exit events. 230 Basic tracer to catch the syscall entry and exit events.
231 231
232config BOOT_TRACER
233 bool "Trace boot initcalls"
234 select GENERIC_TRACER
235 select CONTEXT_SWITCH_TRACER
236 help
237 This tracer helps developers to optimize boot times: it records
238 the timings of the initcalls and traces key events and the identity
239 of tasks that can cause boot delays, such as context-switches.
240
241 Its aim is to be parsed by the scripts/bootgraph.pl tool to
242 produce pretty graphics about boot inefficiencies, giving a visual
243 representation of the delays during initcalls - but the raw
244 /debug/tracing/trace text output is readable too.
245
246 You must pass in initcall_debug and ftrace=initcall to the kernel
247 command line to enable this on bootup.
248
249config TRACE_BRANCH_PROFILING 232config TRACE_BRANCH_PROFILING
250 bool 233 bool
251 select GENERIC_TRACER 234 select GENERIC_TRACER
@@ -371,26 +354,6 @@ config STACK_TRACER
371 354
372 Say N if unsure. 355 Say N if unsure.
373 356
374config KMEMTRACE
375 bool "Trace SLAB allocations"
376 select GENERIC_TRACER
377 help
378 kmemtrace provides tracing for slab allocator functions, such as
379 kmalloc, kfree, kmem_cache_alloc, kmem_cache_free, etc. Collected
380 data is then fed to the userspace application in order to analyse
381 allocation hotspots, internal fragmentation and so on, making it
382 possible to see how well an allocator performs, as well as debug
383 and profile kernel code.
384
385 This requires an userspace application to use. See
386 Documentation/trace/kmemtrace.txt for more information.
387
388 Saying Y will make the kernel somewhat larger and slower. However,
389 if you disable kmemtrace at run-time or boot-time, the performance
390 impact is minimal (depending on the arch the kernel is built for).
391
392 If unsure, say N.
393
394config WORKQUEUE_TRACER 357config WORKQUEUE_TRACER
395 bool "Trace workqueues" 358 bool "Trace workqueues"
396 select GENERIC_TRACER 359 select GENERIC_TRACER
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index ffb1a5b0550e..469a1c7555a5 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -38,10 +38,8 @@ obj-$(CONFIG_SCHED_TRACER) += trace_sched_wakeup.o
38obj-$(CONFIG_NOP_TRACER) += trace_nop.o 38obj-$(CONFIG_NOP_TRACER) += trace_nop.o
39obj-$(CONFIG_STACK_TRACER) += trace_stack.o 39obj-$(CONFIG_STACK_TRACER) += trace_stack.o
40obj-$(CONFIG_MMIOTRACE) += trace_mmiotrace.o 40obj-$(CONFIG_MMIOTRACE) += trace_mmiotrace.o
41obj-$(CONFIG_BOOT_TRACER) += trace_boot.o
42obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += trace_functions_graph.o 41obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += trace_functions_graph.o
43obj-$(CONFIG_TRACE_BRANCH_PROFILING) += trace_branch.o 42obj-$(CONFIG_TRACE_BRANCH_PROFILING) += trace_branch.o
44obj-$(CONFIG_KMEMTRACE) += kmemtrace.o
45obj-$(CONFIG_WORKQUEUE_TRACER) += trace_workqueue.o 43obj-$(CONFIG_WORKQUEUE_TRACER) += trace_workqueue.o
46obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o 44obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
47ifeq ($(CONFIG_BLOCK),y) 45ifeq ($(CONFIG_BLOCK),y)
diff --git a/kernel/trace/kmemtrace.c b/kernel/trace/kmemtrace.c
deleted file mode 100644
index bbfc1bb1660b..000000000000
--- a/kernel/trace/kmemtrace.c
+++ /dev/null
@@ -1,529 +0,0 @@
1/*
2 * Memory allocator tracing
3 *
4 * Copyright (C) 2008 Eduard - Gabriel Munteanu
5 * Copyright (C) 2008 Pekka Enberg <penberg@cs.helsinki.fi>
6 * Copyright (C) 2008 Frederic Weisbecker <fweisbec@gmail.com>
7 */
8
9#include <linux/tracepoint.h>
10#include <linux/seq_file.h>
11#include <linux/debugfs.h>
12#include <linux/dcache.h>
13#include <linux/fs.h>
14
15#include <linux/kmemtrace.h>
16
17#include "trace_output.h"
18#include "trace.h"
19
20/* Select an alternative, minimalistic output than the original one */
21#define TRACE_KMEM_OPT_MINIMAL 0x1
22
23static struct tracer_opt kmem_opts[] = {
24 /* Default disable the minimalistic output */
25 { TRACER_OPT(kmem_minimalistic, TRACE_KMEM_OPT_MINIMAL) },
26 { }
27};
28
29static struct tracer_flags kmem_tracer_flags = {
30 .val = 0,
31 .opts = kmem_opts
32};
33
34static struct trace_array *kmemtrace_array;
35
36/* Trace allocations */
37static inline void kmemtrace_alloc(enum kmemtrace_type_id type_id,
38 unsigned long call_site,
39 const void *ptr,
40 size_t bytes_req,
41 size_t bytes_alloc,
42 gfp_t gfp_flags,
43 int node)
44{
45 struct ftrace_event_call *call = &event_kmem_alloc;
46 struct trace_array *tr = kmemtrace_array;
47 struct kmemtrace_alloc_entry *entry;
48 struct ring_buffer_event *event;
49
50 event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry));
51 if (!event)
52 return;
53
54 entry = ring_buffer_event_data(event);
55 tracing_generic_entry_update(&entry->ent, 0, 0);
56
57 entry->ent.type = TRACE_KMEM_ALLOC;
58 entry->type_id = type_id;
59 entry->call_site = call_site;
60 entry->ptr = ptr;
61 entry->bytes_req = bytes_req;
62 entry->bytes_alloc = bytes_alloc;
63 entry->gfp_flags = gfp_flags;
64 entry->node = node;
65
66 if (!filter_check_discard(call, entry, tr->buffer, event))
67 ring_buffer_unlock_commit(tr->buffer, event);
68
69 trace_wake_up();
70}
71
72static inline void kmemtrace_free(enum kmemtrace_type_id type_id,
73 unsigned long call_site,
74 const void *ptr)
75{
76 struct ftrace_event_call *call = &event_kmem_free;
77 struct trace_array *tr = kmemtrace_array;
78 struct kmemtrace_free_entry *entry;
79 struct ring_buffer_event *event;
80
81 event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry));
82 if (!event)
83 return;
84 entry = ring_buffer_event_data(event);
85 tracing_generic_entry_update(&entry->ent, 0, 0);
86
87 entry->ent.type = TRACE_KMEM_FREE;
88 entry->type_id = type_id;
89 entry->call_site = call_site;
90 entry->ptr = ptr;
91
92 if (!filter_check_discard(call, entry, tr->buffer, event))
93 ring_buffer_unlock_commit(tr->buffer, event);
94
95 trace_wake_up();
96}
97
98static void kmemtrace_kmalloc(void *ignore,
99 unsigned long call_site,
100 const void *ptr,
101 size_t bytes_req,
102 size_t bytes_alloc,
103 gfp_t gfp_flags)
104{
105 kmemtrace_alloc(KMEMTRACE_TYPE_KMALLOC, call_site, ptr,
106 bytes_req, bytes_alloc, gfp_flags, -1);
107}
108
109static void kmemtrace_kmem_cache_alloc(void *ignore,
110 unsigned long call_site,
111 const void *ptr,
112 size_t bytes_req,
113 size_t bytes_alloc,
114 gfp_t gfp_flags)
115{
116 kmemtrace_alloc(KMEMTRACE_TYPE_CACHE, call_site, ptr,
117 bytes_req, bytes_alloc, gfp_flags, -1);
118}
119
120static void kmemtrace_kmalloc_node(void *ignore,
121 unsigned long call_site,
122 const void *ptr,
123 size_t bytes_req,
124 size_t bytes_alloc,
125 gfp_t gfp_flags,
126 int node)
127{
128 kmemtrace_alloc(KMEMTRACE_TYPE_KMALLOC, call_site, ptr,
129 bytes_req, bytes_alloc, gfp_flags, node);
130}
131
132static void kmemtrace_kmem_cache_alloc_node(void *ignore,
133 unsigned long call_site,
134 const void *ptr,
135 size_t bytes_req,
136 size_t bytes_alloc,
137 gfp_t gfp_flags,
138 int node)
139{
140 kmemtrace_alloc(KMEMTRACE_TYPE_CACHE, call_site, ptr,
141 bytes_req, bytes_alloc, gfp_flags, node);
142}
143
144static void
145kmemtrace_kfree(void *ignore, unsigned long call_site, const void *ptr)
146{
147 kmemtrace_free(KMEMTRACE_TYPE_KMALLOC, call_site, ptr);
148}
149
150static void kmemtrace_kmem_cache_free(void *ignore,
151 unsigned long call_site, const void *ptr)
152{
153 kmemtrace_free(KMEMTRACE_TYPE_CACHE, call_site, ptr);
154}
155
156static int kmemtrace_start_probes(void)
157{
158 int err;
159
160 err = register_trace_kmalloc(kmemtrace_kmalloc, NULL);
161 if (err)
162 return err;
163 err = register_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc, NULL);
164 if (err)
165 return err;
166 err = register_trace_kmalloc_node(kmemtrace_kmalloc_node, NULL);
167 if (err)
168 return err;
169 err = register_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node, NULL);
170 if (err)
171 return err;
172 err = register_trace_kfree(kmemtrace_kfree, NULL);
173 if (err)
174 return err;
175 err = register_trace_kmem_cache_free(kmemtrace_kmem_cache_free, NULL);
176
177 return err;
178}
179
180static void kmemtrace_stop_probes(void)
181{
182 unregister_trace_kmalloc(kmemtrace_kmalloc, NULL);
183 unregister_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc, NULL);
184 unregister_trace_kmalloc_node(kmemtrace_kmalloc_node, NULL);
185 unregister_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node, NULL);
186 unregister_trace_kfree(kmemtrace_kfree, NULL);
187 unregister_trace_kmem_cache_free(kmemtrace_kmem_cache_free, NULL);
188}
189
190static int kmem_trace_init(struct trace_array *tr)
191{
192 kmemtrace_array = tr;
193
194 tracing_reset_online_cpus(tr);
195
196 kmemtrace_start_probes();
197
198 return 0;
199}
200
201static void kmem_trace_reset(struct trace_array *tr)
202{
203 kmemtrace_stop_probes();
204}
205
206static void kmemtrace_headers(struct seq_file *s)
207{
208 /* Don't need headers for the original kmemtrace output */
209 if (!(kmem_tracer_flags.val & TRACE_KMEM_OPT_MINIMAL))
210 return;
211
212 seq_printf(s, "#\n");
213 seq_printf(s, "# ALLOC TYPE REQ GIVEN FLAGS "
214 " POINTER NODE CALLER\n");
215 seq_printf(s, "# FREE | | | | "
216 " | | | |\n");
217 seq_printf(s, "# |\n\n");
218}
219
220/*
221 * The following functions give the original output from kmemtrace,
222 * plus the origin CPU, since reordering occurs in-kernel now.
223 */
224
225#define KMEMTRACE_USER_ALLOC 0
226#define KMEMTRACE_USER_FREE 1
227
228struct kmemtrace_user_event {
229 u8 event_id;
230 u8 type_id;
231 u16 event_size;
232 u32 cpu;
233 u64 timestamp;
234 unsigned long call_site;
235 unsigned long ptr;
236};
237
238struct kmemtrace_user_event_alloc {
239 size_t bytes_req;
240 size_t bytes_alloc;
241 unsigned gfp_flags;
242 int node;
243};
244
245static enum print_line_t
246kmemtrace_print_alloc(struct trace_iterator *iter, int flags,
247 struct trace_event *event)
248{
249 struct trace_seq *s = &iter->seq;
250 struct kmemtrace_alloc_entry *entry;
251 int ret;
252
253 trace_assign_type(entry, iter->ent);
254
255 ret = trace_seq_printf(s, "type_id %d call_site %pF ptr %lu "
256 "bytes_req %lu bytes_alloc %lu gfp_flags %lu node %d\n",
257 entry->type_id, (void *)entry->call_site, (unsigned long)entry->ptr,
258 (unsigned long)entry->bytes_req, (unsigned long)entry->bytes_alloc,
259 (unsigned long)entry->gfp_flags, entry->node);
260
261 if (!ret)
262 return TRACE_TYPE_PARTIAL_LINE;
263 return TRACE_TYPE_HANDLED;
264}
265
266static enum print_line_t
267kmemtrace_print_free(struct trace_iterator *iter, int flags,
268 struct trace_event *event)
269{
270 struct trace_seq *s = &iter->seq;
271 struct kmemtrace_free_entry *entry;
272 int ret;
273
274 trace_assign_type(entry, iter->ent);
275
276 ret = trace_seq_printf(s, "type_id %d call_site %pF ptr %lu\n",
277 entry->type_id, (void *)entry->call_site,
278 (unsigned long)entry->ptr);
279
280 if (!ret)
281 return TRACE_TYPE_PARTIAL_LINE;
282 return TRACE_TYPE_HANDLED;
283}
284
285static enum print_line_t
286kmemtrace_print_alloc_user(struct trace_iterator *iter, int flags,
287 struct trace_event *event)
288{
289 struct trace_seq *s = &iter->seq;
290 struct kmemtrace_alloc_entry *entry;
291 struct kmemtrace_user_event *ev;
292 struct kmemtrace_user_event_alloc *ev_alloc;
293
294 trace_assign_type(entry, iter->ent);
295
296 ev = trace_seq_reserve(s, sizeof(*ev));
297 if (!ev)
298 return TRACE_TYPE_PARTIAL_LINE;
299
300 ev->event_id = KMEMTRACE_USER_ALLOC;
301 ev->type_id = entry->type_id;
302 ev->event_size = sizeof(*ev) + sizeof(*ev_alloc);
303 ev->cpu = iter->cpu;
304 ev->timestamp = iter->ts;
305 ev->call_site = entry->call_site;
306 ev->ptr = (unsigned long)entry->ptr;
307
308 ev_alloc = trace_seq_reserve(s, sizeof(*ev_alloc));
309 if (!ev_alloc)
310 return TRACE_TYPE_PARTIAL_LINE;
311
312 ev_alloc->bytes_req = entry->bytes_req;
313 ev_alloc->bytes_alloc = entry->bytes_alloc;
314 ev_alloc->gfp_flags = entry->gfp_flags;
315 ev_alloc->node = entry->node;
316
317 return TRACE_TYPE_HANDLED;
318}
319
320static enum print_line_t
321kmemtrace_print_free_user(struct trace_iterator *iter, int flags,
322 struct trace_event *event)
323{
324 struct trace_seq *s = &iter->seq;
325 struct kmemtrace_free_entry *entry;
326 struct kmemtrace_user_event *ev;
327
328 trace_assign_type(entry, iter->ent);
329
330 ev = trace_seq_reserve(s, sizeof(*ev));
331 if (!ev)
332 return TRACE_TYPE_PARTIAL_LINE;
333
334 ev->event_id = KMEMTRACE_USER_FREE;
335 ev->type_id = entry->type_id;
336 ev->event_size = sizeof(*ev);
337 ev->cpu = iter->cpu;
338 ev->timestamp = iter->ts;
339 ev->call_site = entry->call_site;
340 ev->ptr = (unsigned long)entry->ptr;
341
342 return TRACE_TYPE_HANDLED;
343}
344
345/* The two other following provide a more minimalistic output */
346static enum print_line_t
347kmemtrace_print_alloc_compress(struct trace_iterator *iter)
348{
349 struct kmemtrace_alloc_entry *entry;
350 struct trace_seq *s = &iter->seq;
351 int ret;
352
353 trace_assign_type(entry, iter->ent);
354
355 /* Alloc entry */
356 ret = trace_seq_printf(s, " + ");
357 if (!ret)
358 return TRACE_TYPE_PARTIAL_LINE;
359
360 /* Type */
361 switch (entry->type_id) {
362 case KMEMTRACE_TYPE_KMALLOC:
363 ret = trace_seq_printf(s, "K ");
364 break;
365 case KMEMTRACE_TYPE_CACHE:
366 ret = trace_seq_printf(s, "C ");
367 break;
368 case KMEMTRACE_TYPE_PAGES:
369 ret = trace_seq_printf(s, "P ");
370 break;
371 default:
372 ret = trace_seq_printf(s, "? ");
373 }
374
375 if (!ret)
376 return TRACE_TYPE_PARTIAL_LINE;
377
378 /* Requested */
379 ret = trace_seq_printf(s, "%4zu ", entry->bytes_req);
380 if (!ret)
381 return TRACE_TYPE_PARTIAL_LINE;
382
383 /* Allocated */
384 ret = trace_seq_printf(s, "%4zu ", entry->bytes_alloc);
385 if (!ret)
386 return TRACE_TYPE_PARTIAL_LINE;
387
388 /* Flags
389 * TODO: would be better to see the name of the GFP flag names
390 */
391 ret = trace_seq_printf(s, "%08x ", entry->gfp_flags);
392 if (!ret)
393 return TRACE_TYPE_PARTIAL_LINE;
394
395 /* Pointer to allocated */
396 ret = trace_seq_printf(s, "0x%tx ", (ptrdiff_t)entry->ptr);
397 if (!ret)
398 return TRACE_TYPE_PARTIAL_LINE;
399
400 /* Node and call site*/
401 ret = trace_seq_printf(s, "%4d %pf\n", entry->node,
402 (void *)entry->call_site);
403 if (!ret)
404 return TRACE_TYPE_PARTIAL_LINE;
405
406 return TRACE_TYPE_HANDLED;
407}
408
409static enum print_line_t
410kmemtrace_print_free_compress(struct trace_iterator *iter)
411{
412 struct kmemtrace_free_entry *entry;
413 struct trace_seq *s = &iter->seq;
414 int ret;
415
416 trace_assign_type(entry, iter->ent);
417
418 /* Free entry */
419 ret = trace_seq_printf(s, " - ");
420 if (!ret)
421 return TRACE_TYPE_PARTIAL_LINE;
422
423 /* Type */
424 switch (entry->type_id) {
425 case KMEMTRACE_TYPE_KMALLOC:
426 ret = trace_seq_printf(s, "K ");
427 break;
428 case KMEMTRACE_TYPE_CACHE:
429 ret = trace_seq_printf(s, "C ");
430 break;
431 case KMEMTRACE_TYPE_PAGES:
432 ret = trace_seq_printf(s, "P ");
433 break;
434 default:
435 ret = trace_seq_printf(s, "? ");
436 }
437
438 if (!ret)
439 return TRACE_TYPE_PARTIAL_LINE;
440
441 /* Skip requested/allocated/flags */
442 ret = trace_seq_printf(s, " ");
443 if (!ret)
444 return TRACE_TYPE_PARTIAL_LINE;
445
446 /* Pointer to allocated */
447 ret = trace_seq_printf(s, "0x%tx ", (ptrdiff_t)entry->ptr);
448 if (!ret)
449 return TRACE_TYPE_PARTIAL_LINE;
450
451 /* Skip node and print call site*/
452 ret = trace_seq_printf(s, " %pf\n", (void *)entry->call_site);
453 if (!ret)
454 return TRACE_TYPE_PARTIAL_LINE;
455
456 return TRACE_TYPE_HANDLED;
457}
458
459static enum print_line_t kmemtrace_print_line(struct trace_iterator *iter)
460{
461 struct trace_entry *entry = iter->ent;
462
463 if (!(kmem_tracer_flags.val & TRACE_KMEM_OPT_MINIMAL))
464 return TRACE_TYPE_UNHANDLED;
465
466 switch (entry->type) {
467 case TRACE_KMEM_ALLOC:
468 return kmemtrace_print_alloc_compress(iter);
469 case TRACE_KMEM_FREE:
470 return kmemtrace_print_free_compress(iter);
471 default:
472 return TRACE_TYPE_UNHANDLED;
473 }
474}
475
476static struct trace_event_functions kmem_trace_alloc_funcs = {
477 .trace = kmemtrace_print_alloc,
478 .binary = kmemtrace_print_alloc_user,
479};
480
481static struct trace_event kmem_trace_alloc = {
482 .type = TRACE_KMEM_ALLOC,
483 .funcs = &kmem_trace_alloc_funcs,
484};
485
486static struct trace_event_functions kmem_trace_free_funcs = {
487 .trace = kmemtrace_print_free,
488 .binary = kmemtrace_print_free_user,
489};
490
491static struct trace_event kmem_trace_free = {
492 .type = TRACE_KMEM_FREE,
493 .funcs = &kmem_trace_free_funcs,
494};
495
496static struct tracer kmem_tracer __read_mostly = {
497 .name = "kmemtrace",
498 .init = kmem_trace_init,
499 .reset = kmem_trace_reset,
500 .print_line = kmemtrace_print_line,
501 .print_header = kmemtrace_headers,
502 .flags = &kmem_tracer_flags
503};
504
505void kmemtrace_init(void)
506{
507 /* earliest opportunity to start kmem tracing */
508}
509
510static int __init init_kmem_tracer(void)
511{
512 if (!register_ftrace_event(&kmem_trace_alloc)) {
513 pr_warning("Warning: could not register kmem events\n");
514 return 1;
515 }
516
517 if (!register_ftrace_event(&kmem_trace_free)) {
518 pr_warning("Warning: could not register kmem events\n");
519 return 1;
520 }
521
522 if (register_tracer(&kmem_tracer) != 0) {
523 pr_warning("Warning: could not register the kmem tracer\n");
524 return 1;
525 }
526
527 return 0;
528}
529device_initcall(init_kmem_tracer);
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 644ab744e759..8683dec6946b 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4596,9 +4596,6 @@ __init static int tracer_alloc_buffers(void)
4596 4596
4597 register_tracer(&nop_trace); 4597 register_tracer(&nop_trace);
4598 current_trace = &nop_trace; 4598 current_trace = &nop_trace;
4599#ifdef CONFIG_BOOT_TRACER
4600 register_tracer(&boot_tracer);
4601#endif
4602 /* All seems OK, enable tracing */ 4599 /* All seems OK, enable tracing */
4603 tracing_disabled = 0; 4600 tracing_disabled = 0;
4604 4601
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 6c45e55097ce..01ce088c1cdf 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -9,10 +9,7 @@
9#include <linux/mmiotrace.h> 9#include <linux/mmiotrace.h>
10#include <linux/tracepoint.h> 10#include <linux/tracepoint.h>
11#include <linux/ftrace.h> 11#include <linux/ftrace.h>
12#include <trace/boot.h>
13#include <linux/kmemtrace.h>
14#include <linux/hw_breakpoint.h> 12#include <linux/hw_breakpoint.h>
15
16#include <linux/trace_seq.h> 13#include <linux/trace_seq.h>
17#include <linux/ftrace_event.h> 14#include <linux/ftrace_event.h>
18 15
@@ -29,26 +26,15 @@ enum trace_type {
29 TRACE_MMIO_RW, 26 TRACE_MMIO_RW,
30 TRACE_MMIO_MAP, 27 TRACE_MMIO_MAP,
31 TRACE_BRANCH, 28 TRACE_BRANCH,
32 TRACE_BOOT_CALL,
33 TRACE_BOOT_RET,
34 TRACE_GRAPH_RET, 29 TRACE_GRAPH_RET,
35 TRACE_GRAPH_ENT, 30 TRACE_GRAPH_ENT,
36 TRACE_USER_STACK, 31 TRACE_USER_STACK,
37 TRACE_KMEM_ALLOC,
38 TRACE_KMEM_FREE,
39 TRACE_BLK, 32 TRACE_BLK,
40 TRACE_KSYM, 33 TRACE_KSYM,
41 34
42 __TRACE_LAST_TYPE, 35 __TRACE_LAST_TYPE,
43}; 36};
44 37
45enum kmemtrace_type_id {
46 KMEMTRACE_TYPE_KMALLOC = 0, /* kmalloc() or kfree(). */
47 KMEMTRACE_TYPE_CACHE, /* kmem_cache_*(). */
48 KMEMTRACE_TYPE_PAGES, /* __get_free_pages() and friends. */
49};
50
51extern struct tracer boot_tracer;
52 38
53#undef __field 39#undef __field
54#define __field(type, item) type item; 40#define __field(type, item) type item;
@@ -209,17 +195,11 @@ extern void __ftrace_bad_type(void);
209 TRACE_MMIO_RW); \ 195 TRACE_MMIO_RW); \
210 IF_ASSIGN(var, ent, struct trace_mmiotrace_map, \ 196 IF_ASSIGN(var, ent, struct trace_mmiotrace_map, \
211 TRACE_MMIO_MAP); \ 197 TRACE_MMIO_MAP); \
212 IF_ASSIGN(var, ent, struct trace_boot_call, TRACE_BOOT_CALL);\
213 IF_ASSIGN(var, ent, struct trace_boot_ret, TRACE_BOOT_RET);\
214 IF_ASSIGN(var, ent, struct trace_branch, TRACE_BRANCH); \ 198 IF_ASSIGN(var, ent, struct trace_branch, TRACE_BRANCH); \
215 IF_ASSIGN(var, ent, struct ftrace_graph_ent_entry, \ 199 IF_ASSIGN(var, ent, struct ftrace_graph_ent_entry, \
216 TRACE_GRAPH_ENT); \ 200 TRACE_GRAPH_ENT); \
217 IF_ASSIGN(var, ent, struct ftrace_graph_ret_entry, \ 201 IF_ASSIGN(var, ent, struct ftrace_graph_ret_entry, \
218 TRACE_GRAPH_RET); \ 202 TRACE_GRAPH_RET); \
219 IF_ASSIGN(var, ent, struct kmemtrace_alloc_entry, \
220 TRACE_KMEM_ALLOC); \
221 IF_ASSIGN(var, ent, struct kmemtrace_free_entry, \
222 TRACE_KMEM_FREE); \
223 IF_ASSIGN(var, ent, struct ksym_trace_entry, TRACE_KSYM);\ 203 IF_ASSIGN(var, ent, struct ksym_trace_entry, TRACE_KSYM);\
224 __ftrace_bad_type(); \ 204 __ftrace_bad_type(); \
225 } while (0) 205 } while (0)
diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c
deleted file mode 100644
index c21d5f3956ad..000000000000
--- a/kernel/trace/trace_boot.c
+++ /dev/null
@@ -1,185 +0,0 @@
1/*
2 * ring buffer based initcalls tracer
3 *
4 * Copyright (C) 2008 Frederic Weisbecker <fweisbec@gmail.com>
5 *
6 */
7
8#include <linux/init.h>
9#include <linux/debugfs.h>
10#include <linux/ftrace.h>
11#include <linux/kallsyms.h>
12#include <linux/time.h>
13
14#include "trace.h"
15#include "trace_output.h"
16
17static struct trace_array *boot_trace;
18static bool pre_initcalls_finished;
19
20/* Tells the boot tracer that the pre_smp_initcalls are finished.
21 * So we are ready .
22 * It doesn't enable sched events tracing however.
23 * You have to call enable_boot_trace to do so.
24 */
25void start_boot_trace(void)
26{
27 pre_initcalls_finished = true;
28}
29
30void enable_boot_trace(void)
31{
32 if (boot_trace && pre_initcalls_finished)
33 tracing_start_sched_switch_record();
34}
35
36void disable_boot_trace(void)
37{
38 if (boot_trace && pre_initcalls_finished)
39 tracing_stop_sched_switch_record();
40}
41
42static int boot_trace_init(struct trace_array *tr)
43{
44 boot_trace = tr;
45
46 if (!tr)
47 return 0;
48
49 tracing_reset_online_cpus(tr);
50
51 tracing_sched_switch_assign_trace(tr);
52 return 0;
53}
54
55static enum print_line_t
56initcall_call_print_line(struct trace_iterator *iter)
57{
58 struct trace_entry *entry = iter->ent;
59 struct trace_seq *s = &iter->seq;
60 struct trace_boot_call *field;
61 struct boot_trace_call *call;
62 u64 ts;
63 unsigned long nsec_rem;
64 int ret;
65
66 trace_assign_type(field, entry);
67 call = &field->boot_call;
68 ts = iter->ts;
69 nsec_rem = do_div(ts, NSEC_PER_SEC);
70
71 ret = trace_seq_printf(s, "[%5ld.%09ld] calling %s @ %i\n",
72 (unsigned long)ts, nsec_rem, call->func, call->caller);
73
74 if (!ret)
75 return TRACE_TYPE_PARTIAL_LINE;
76 else
77 return TRACE_TYPE_HANDLED;
78}
79
80static enum print_line_t
81initcall_ret_print_line(struct trace_iterator *iter)
82{
83 struct trace_entry *entry = iter->ent;
84 struct trace_seq *s = &iter->seq;
85 struct trace_boot_ret *field;
86 struct boot_trace_ret *init_ret;
87 u64 ts;
88 unsigned long nsec_rem;
89 int ret;
90
91 trace_assign_type(field, entry);
92 init_ret = &field->boot_ret;
93 ts = iter->ts;
94 nsec_rem = do_div(ts, NSEC_PER_SEC);
95
96 ret = trace_seq_printf(s, "[%5ld.%09ld] initcall %s "
97 "returned %d after %llu msecs\n",
98 (unsigned long) ts,
99 nsec_rem,
100 init_ret->func, init_ret->result, init_ret->duration);
101
102 if (!ret)
103 return TRACE_TYPE_PARTIAL_LINE;
104 else
105 return TRACE_TYPE_HANDLED;
106}
107
108static enum print_line_t initcall_print_line(struct trace_iterator *iter)
109{
110 struct trace_entry *entry = iter->ent;
111
112 switch (entry->type) {
113 case TRACE_BOOT_CALL:
114 return initcall_call_print_line(iter);
115 case TRACE_BOOT_RET:
116 return initcall_ret_print_line(iter);
117 default:
118 return TRACE_TYPE_UNHANDLED;
119 }
120}
121
122struct tracer boot_tracer __read_mostly =
123{
124 .name = "initcall",
125 .init = boot_trace_init,
126 .reset = tracing_reset_online_cpus,
127 .print_line = initcall_print_line,
128};
129
130void trace_boot_call(struct boot_trace_call *bt, initcall_t fn)
131{
132 struct ftrace_event_call *call = &event_boot_call;
133 struct ring_buffer_event *event;
134 struct ring_buffer *buffer;
135 struct trace_boot_call *entry;
136 struct trace_array *tr = boot_trace;
137
138 if (!tr || !pre_initcalls_finished)
139 return;
140
141 /* Get its name now since this function could
142 * disappear because it is in the .init section.
143 */
144 sprint_symbol(bt->func, (unsigned long)fn);
145 preempt_disable();
146
147 buffer = tr->buffer;
148 event = trace_buffer_lock_reserve(buffer, TRACE_BOOT_CALL,
149 sizeof(*entry), 0, 0);
150 if (!event)
151 goto out;
152 entry = ring_buffer_event_data(event);
153 entry->boot_call = *bt;
154 if (!filter_check_discard(call, entry, buffer, event))
155 trace_buffer_unlock_commit(buffer, event, 0, 0);
156 out:
157 preempt_enable();
158}
159
160void trace_boot_ret(struct boot_trace_ret *bt, initcall_t fn)
161{
162 struct ftrace_event_call *call = &event_boot_ret;
163 struct ring_buffer_event *event;
164 struct ring_buffer *buffer;
165 struct trace_boot_ret *entry;
166 struct trace_array *tr = boot_trace;
167
168 if (!tr || !pre_initcalls_finished)
169 return;
170
171 sprint_symbol(bt->func, (unsigned long)fn);
172 preempt_disable();
173
174 buffer = tr->buffer;
175 event = trace_buffer_lock_reserve(buffer, TRACE_BOOT_RET,
176 sizeof(*entry), 0, 0);
177 if (!event)
178 goto out;
179 entry = ring_buffer_event_data(event);
180 entry->boot_ret = *bt;
181 if (!filter_check_discard(call, entry, buffer, event))
182 trace_buffer_unlock_commit(buffer, event, 0, 0);
183 out:
184 preempt_enable();
185}
diff --git a/kernel/trace/trace_entries.h b/kernel/trace/trace_entries.h
index dc008c1240da..13abc157dbaf 100644
--- a/kernel/trace/trace_entries.h
+++ b/kernel/trace/trace_entries.h
@@ -271,33 +271,6 @@ FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,
271 __entry->map_id, __entry->opcode) 271 __entry->map_id, __entry->opcode)
272); 272);
273 273
274FTRACE_ENTRY(boot_call, trace_boot_call,
275
276 TRACE_BOOT_CALL,
277
278 F_STRUCT(
279 __field_struct( struct boot_trace_call, boot_call )
280 __field_desc( pid_t, boot_call, caller )
281 __array_desc( char, boot_call, func, KSYM_SYMBOL_LEN)
282 ),
283
284 F_printk("%d %s", __entry->caller, __entry->func)
285);
286
287FTRACE_ENTRY(boot_ret, trace_boot_ret,
288
289 TRACE_BOOT_RET,
290
291 F_STRUCT(
292 __field_struct( struct boot_trace_ret, boot_ret )
293 __array_desc( char, boot_ret, func, KSYM_SYMBOL_LEN)
294 __field_desc( int, boot_ret, result )
295 __field_desc( unsigned long, boot_ret, duration )
296 ),
297
298 F_printk("%s %d %lx",
299 __entry->func, __entry->result, __entry->duration)
300);
301 274
302#define TRACE_FUNC_SIZE 30 275#define TRACE_FUNC_SIZE 30
303#define TRACE_FILE_SIZE 20 276#define TRACE_FILE_SIZE 20
@@ -318,41 +291,6 @@ FTRACE_ENTRY(branch, trace_branch,
318 __entry->func, __entry->file, __entry->correct) 291 __entry->func, __entry->file, __entry->correct)
319); 292);
320 293
321FTRACE_ENTRY(kmem_alloc, kmemtrace_alloc_entry,
322
323 TRACE_KMEM_ALLOC,
324
325 F_STRUCT(
326 __field( enum kmemtrace_type_id, type_id )
327 __field( unsigned long, call_site )
328 __field( const void *, ptr )
329 __field( size_t, bytes_req )
330 __field( size_t, bytes_alloc )
331 __field( gfp_t, gfp_flags )
332 __field( int, node )
333 ),
334
335 F_printk("type:%u call_site:%lx ptr:%p req:%zi alloc:%zi"
336 " flags:%x node:%d",
337 __entry->type_id, __entry->call_site, __entry->ptr,
338 __entry->bytes_req, __entry->bytes_alloc,
339 __entry->gfp_flags, __entry->node)
340);
341
342FTRACE_ENTRY(kmem_free, kmemtrace_free_entry,
343
344 TRACE_KMEM_FREE,
345
346 F_STRUCT(
347 __field( enum kmemtrace_type_id, type_id )
348 __field( unsigned long, call_site )
349 __field( const void *, ptr )
350 ),
351
352 F_printk("type:%u call_site:%lx ptr:%p",
353 __entry->type_id, __entry->call_site, __entry->ptr)
354);
355
356FTRACE_ENTRY(ksym_trace, ksym_trace_entry, 294FTRACE_ENTRY(ksym_trace, ksym_trace_entry,
357 295
358 TRACE_KSYM, 296 TRACE_KSYM,
diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c
index e6f65887842c..4799d7047eb0 100644
--- a/kernel/trace/trace_event_perf.c
+++ b/kernel/trace/trace_event_perf.c
@@ -9,8 +9,6 @@
9#include <linux/kprobes.h> 9#include <linux/kprobes.h>
10#include "trace.h" 10#include "trace.h"
11 11
12EXPORT_SYMBOL_GPL(perf_arch_fetch_caller_regs);
13
14static char *perf_trace_buf[4]; 12static char *perf_trace_buf[4];
15 13
16/* 14/*
diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c
index a7974a552ca9..c080956f4d8e 100644
--- a/kernel/trace/trace_sysprof.c
+++ b/kernel/trace/trace_sysprof.c
@@ -33,12 +33,13 @@ static DEFINE_MUTEX(sample_timer_lock);
33 */ 33 */
34static DEFINE_PER_CPU(struct hrtimer, stack_trace_hrtimer); 34static DEFINE_PER_CPU(struct hrtimer, stack_trace_hrtimer);
35 35
36struct stack_frame { 36struct stack_frame_user {
37 const void __user *next_fp; 37 const void __user *next_fp;
38 unsigned long return_address; 38 unsigned long return_address;
39}; 39};
40 40
41static int copy_stack_frame(const void __user *fp, struct stack_frame *frame) 41static int
42copy_stack_frame(const void __user *fp, struct stack_frame_user *frame)
42{ 43{
43 int ret; 44 int ret;
44 45
@@ -125,7 +126,7 @@ trace_kernel(struct pt_regs *regs, struct trace_array *tr,
125static void timer_notify(struct pt_regs *regs, int cpu) 126static void timer_notify(struct pt_regs *regs, int cpu)
126{ 127{
127 struct trace_array_cpu *data; 128 struct trace_array_cpu *data;
128 struct stack_frame frame; 129 struct stack_frame_user frame;
129 struct trace_array *tr; 130 struct trace_array *tr;
130 const void __user *fp; 131 const void __user *fp;
131 int is_user; 132 int is_user;
generated by cgit v1.2.2 (git 2.25.0) at 2025-06-03 15:49:01 -0400