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-rw-r--r--include/linux/tracepoint.h105
-rw-r--r--include/trace/irq_event_types.h8
-rw-r--r--include/trace/sched_event_types.h102
-rw-r--r--kernel/trace/blktrace.c10
-rw-r--r--kernel/trace/trace.c2
-rw-r--r--kernel/trace/trace_branch.c2
-rw-r--r--kernel/trace/trace_events.c45
-rw-r--r--kernel/trace/trace_events_stage_1.h8
-rw-r--r--kernel/trace/trace_events_stage_2.h13
-rw-r--r--kernel/trace/trace_events_stage_3.h98
-rw-r--r--kernel/trace/trace_export.c2
-rw-r--r--kernel/trace/trace_functions_graph.c6
-rw-r--r--kernel/trace/trace_output.c14
-rw-r--r--kernel/trace/trace_workqueue.c6
14 files changed, 275 insertions, 146 deletions
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 69b56988813d..d35a7ee7611f 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -157,7 +157,110 @@ static inline void tracepoint_synchronize_unregister(void)
157#define TRACE_FORMAT(name, proto, args, fmt) \ 157#define TRACE_FORMAT(name, proto, args, fmt) \
158 DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) 158 DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
159 159
160#define TRACE_EVENT(name, proto, args, struct, print, assign) \ 160
161/*
162 * For use with the TRACE_EVENT macro:
163 *
164 * We define a tracepoint, its arguments, its printk format
165 * and its 'fast binay record' layout.
166 *
167 * Firstly, name your tracepoint via TRACE_EVENT(name : the
168 * 'subsystem_event' notation is fine.
169 *
170 * Think about this whole construct as the
171 * 'trace_sched_switch() function' from now on.
172 *
173 *
174 * TRACE_EVENT(sched_switch,
175 *
176 * *
177 * * A function has a regular function arguments
178 * * prototype, declare it via TP_PROTO():
179 * *
180 *
181 * TP_PROTO(struct rq *rq, struct task_struct *prev,
182 * struct task_struct *next),
183 *
184 * *
185 * * Define the call signature of the 'function'.
186 * * (Design sidenote: we use this instead of a
187 * * TP_PROTO1/TP_PROTO2/TP_PROTO3 ugliness.)
188 * *
189 *
190 * TP_ARGS(rq, prev, next),
191 *
192 * *
193 * * Fast binary tracing: define the trace record via
194 * * TP_STRUCT__entry(). You can think about it like a
195 * * regular C structure local variable definition.
196 * *
197 * * This is how the trace record is structured and will
198 * * be saved into the ring buffer. These are the fields
199 * * that will be exposed to user-space in
200 * * /debug/tracing/events/<*>/format.
201 * *
202 * * The declared 'local variable' is called '__entry'
203 * *
204 * * __field(pid_t, prev_prid) is equivalent to a standard declariton:
205 * *
206 * * pid_t prev_pid;
207 * *
208 * * __array(char, prev_comm, TASK_COMM_LEN) is equivalent to:
209 * *
210 * * char prev_comm[TASK_COMM_LEN];
211 * *
212 *
213 * TP_STRUCT__entry(
214 * __array( char, prev_comm, TASK_COMM_LEN )
215 * __field( pid_t, prev_pid )
216 * __field( int, prev_prio )
217 * __array( char, next_comm, TASK_COMM_LEN )
218 * __field( pid_t, next_pid )
219 * __field( int, next_prio )
220 * ),
221 *
222 * *
223 * * Assign the entry into the trace record, by embedding
224 * * a full C statement block into TP_fast_assign(). You
225 * * can refer to the trace record as '__entry' -
226 * * otherwise you can put arbitrary C code in here.
227 * *
228 * * Note: this C code will execute every time a trace event
229 * * happens, on an active tracepoint.
230 * *
231 *
232 * TP_fast_assign(
233 * memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
234 * __entry->prev_pid = prev->pid;
235 * __entry->prev_prio = prev->prio;
236 * memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
237 * __entry->next_pid = next->pid;
238 * __entry->next_prio = next->prio;
239 * )
240 *
241 * *
242 * * Formatted output of a trace record via TP_printk().
243 * * This is how the tracepoint will appear under ftrace
244 * * plugins that make use of this tracepoint.
245 * *
246 * * (raw-binary tracing wont actually perform this step.)
247 * *
248 *
249 * TP_printk("task %s:%d [%d] ==> %s:%d [%d]",
250 * __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
251 * __entry->next_comm, __entry->next_pid, __entry->next_prio),
252 *
253 * );
254 *
255 * This macro construct is thus used for the regular printk format
256 * tracing setup, it is used to construct a function pointer based
257 * tracepoint callback (this is used by programmatic plugins and
258 * can also by used by generic instrumentation like SystemTap), and
259 * it is also used to expose a structured trace record in
260 * /debug/tracing/events/.
261 */
262
263#define TRACE_EVENT(name, proto, args, struct, assign, print) \
161 DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) 264 DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
162 265
163#endif 266#endif
diff --git a/include/trace/irq_event_types.h b/include/trace/irq_event_types.h
index 43bcb74dd49f..214bb928fe9e 100644
--- a/include/trace/irq_event_types.h
+++ b/include/trace/irq_event_types.h
@@ -31,13 +31,13 @@ TRACE_EVENT(irq_handler_exit,
31 __field( int, ret ) 31 __field( int, ret )
32 ), 32 ),
33 33
34 TP_printk("irq=%d return=%s",
35 __entry->irq, __entry->ret ? "handled" : "unhandled"),
36
37 TP_fast_assign( 34 TP_fast_assign(
38 __entry->irq = irq; 35 __entry->irq = irq;
39 __entry->ret = ret; 36 __entry->ret = ret;
40 ) 37 ),
38
39 TP_printk("irq=%d return=%s",
40 __entry->irq, __entry->ret ? "handled" : "unhandled")
41); 41);
42 42
43#undef TRACE_SYSTEM 43#undef TRACE_SYSTEM
diff --git a/include/trace/sched_event_types.h b/include/trace/sched_event_types.h
index fb37af672c88..63547dc1125f 100644
--- a/include/trace/sched_event_types.h
+++ b/include/trace/sched_event_types.h
@@ -22,12 +22,12 @@ TRACE_EVENT(sched_kthread_stop,
22 __field( pid_t, pid ) 22 __field( pid_t, pid )
23 ), 23 ),
24 24
25 TP_printk("task %s:%d", __entry->comm, __entry->pid),
26
27 TP_fast_assign( 25 TP_fast_assign(
28 memcpy(__entry->comm, t->comm, TASK_COMM_LEN); 26 memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
29 __entry->pid = t->pid; 27 __entry->pid = t->pid;
30 ) 28 ),
29
30 TP_printk("task %s:%d", __entry->comm, __entry->pid)
31); 31);
32 32
33/* 33/*
@@ -43,11 +43,11 @@ TRACE_EVENT(sched_kthread_stop_ret,
43 __field( int, ret ) 43 __field( int, ret )
44 ), 44 ),
45 45
46 TP_printk("ret %d", __entry->ret),
47
48 TP_fast_assign( 46 TP_fast_assign(
49 __entry->ret = ret; 47 __entry->ret = ret;
50 ) 48 ),
49
50 TP_printk("ret %d", __entry->ret)
51); 51);
52 52
53/* 53/*
@@ -68,14 +68,14 @@ TRACE_EVENT(sched_wait_task,
68 __field( int, prio ) 68 __field( int, prio )
69 ), 69 ),
70 70
71 TP_printk("task %s:%d [%d]",
72 __entry->comm, __entry->pid, __entry->prio),
73
74 TP_fast_assign( 71 TP_fast_assign(
75 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 72 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
76 __entry->pid = p->pid; 73 __entry->pid = p->pid;
77 __entry->prio = p->prio; 74 __entry->prio = p->prio;
78 ) 75 ),
76
77 TP_printk("task %s:%d [%d]",
78 __entry->comm, __entry->pid, __entry->prio)
79); 79);
80 80
81/* 81/*
@@ -97,16 +97,16 @@ TRACE_EVENT(sched_wakeup,
97 __field( int, success ) 97 __field( int, success )
98 ), 98 ),
99 99
100 TP_printk("task %s:%d [%d] success=%d",
101 __entry->comm, __entry->pid, __entry->prio,
102 __entry->success),
103
104 TP_fast_assign( 100 TP_fast_assign(
105 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 101 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
106 __entry->pid = p->pid; 102 __entry->pid = p->pid;
107 __entry->prio = p->prio; 103 __entry->prio = p->prio;
108 __entry->success = success; 104 __entry->success = success;
109 ) 105 ),
106
107 TP_printk("task %s:%d [%d] success=%d",
108 __entry->comm, __entry->pid, __entry->prio,
109 __entry->success)
110); 110);
111 111
112/* 112/*
@@ -128,16 +128,16 @@ TRACE_EVENT(sched_wakeup_new,
128 __field( int, success ) 128 __field( int, success )
129 ), 129 ),
130 130
131 TP_printk("task %s:%d [%d] success=%d",
132 __entry->comm, __entry->pid, __entry->prio,
133 __entry->success),
134
135 TP_fast_assign( 131 TP_fast_assign(
136 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 132 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
137 __entry->pid = p->pid; 133 __entry->pid = p->pid;
138 __entry->prio = p->prio; 134 __entry->prio = p->prio;
139 __entry->success = success; 135 __entry->success = success;
140 ) 136 ),
137
138 TP_printk("task %s:%d [%d] success=%d",
139 __entry->comm, __entry->pid, __entry->prio,
140 __entry->success)
141); 141);
142 142
143/* 143/*
@@ -162,10 +162,6 @@ TRACE_EVENT(sched_switch,
162 __field( int, next_prio ) 162 __field( int, next_prio )
163 ), 163 ),
164 164
165 TP_printk("task %s:%d [%d] ==> %s:%d [%d]",
166 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
167 __entry->next_comm, __entry->next_pid, __entry->next_prio),
168
169 TP_fast_assign( 165 TP_fast_assign(
170 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN); 166 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
171 __entry->prev_pid = prev->pid; 167 __entry->prev_pid = prev->pid;
@@ -173,7 +169,11 @@ TRACE_EVENT(sched_switch,
173 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN); 169 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
174 __entry->next_pid = next->pid; 170 __entry->next_pid = next->pid;
175 __entry->next_prio = next->prio; 171 __entry->next_prio = next->prio;
176 ) 172 ),
173
174 TP_printk("task %s:%d [%d] ==> %s:%d [%d]",
175 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
176 __entry->next_comm, __entry->next_pid, __entry->next_prio)
177); 177);
178 178
179/* 179/*
@@ -193,17 +193,17 @@ TRACE_EVENT(sched_migrate_task,
193 __field( int, dest_cpu ) 193 __field( int, dest_cpu )
194 ), 194 ),
195 195
196 TP_printk("task %s:%d [%d] from: %d to: %d",
197 __entry->comm, __entry->pid, __entry->prio,
198 __entry->orig_cpu, __entry->dest_cpu),
199
200 TP_fast_assign( 196 TP_fast_assign(
201 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 197 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
202 __entry->pid = p->pid; 198 __entry->pid = p->pid;
203 __entry->prio = p->prio; 199 __entry->prio = p->prio;
204 __entry->orig_cpu = orig_cpu; 200 __entry->orig_cpu = orig_cpu;
205 __entry->dest_cpu = dest_cpu; 201 __entry->dest_cpu = dest_cpu;
206 ) 202 ),
203
204 TP_printk("task %s:%d [%d] from: %d to: %d",
205 __entry->comm, __entry->pid, __entry->prio,
206 __entry->orig_cpu, __entry->dest_cpu)
207); 207);
208 208
209/* 209/*
@@ -221,14 +221,14 @@ TRACE_EVENT(sched_process_free,
221 __field( int, prio ) 221 __field( int, prio )
222 ), 222 ),
223 223
224 TP_printk("task %s:%d [%d]",
225 __entry->comm, __entry->pid, __entry->prio),
226
227 TP_fast_assign( 224 TP_fast_assign(
228 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 225 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
229 __entry->pid = p->pid; 226 __entry->pid = p->pid;
230 __entry->prio = p->prio; 227 __entry->prio = p->prio;
231 ) 228 ),
229
230 TP_printk("task %s:%d [%d]",
231 __entry->comm, __entry->pid, __entry->prio)
232); 232);
233 233
234/* 234/*
@@ -246,14 +246,14 @@ TRACE_EVENT(sched_process_exit,
246 __field( int, prio ) 246 __field( int, prio )
247 ), 247 ),
248 248
249 TP_printk("task %s:%d [%d]",
250 __entry->comm, __entry->pid, __entry->prio),
251
252 TP_fast_assign( 249 TP_fast_assign(
253 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 250 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
254 __entry->pid = p->pid; 251 __entry->pid = p->pid;
255 __entry->prio = p->prio; 252 __entry->prio = p->prio;
256 ) 253 ),
254
255 TP_printk("task %s:%d [%d]",
256 __entry->comm, __entry->pid, __entry->prio)
257); 257);
258 258
259/* 259/*
@@ -271,14 +271,14 @@ TRACE_EVENT(sched_process_wait,
271 __field( int, prio ) 271 __field( int, prio )
272 ), 272 ),
273 273
274 TP_printk("task %s:%d [%d]",
275 __entry->comm, __entry->pid, __entry->prio),
276
277 TP_fast_assign( 274 TP_fast_assign(
278 memcpy(__entry->comm, current->comm, TASK_COMM_LEN); 275 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
279 __entry->pid = pid_nr(pid); 276 __entry->pid = pid_nr(pid);
280 __entry->prio = current->prio; 277 __entry->prio = current->prio;
281 ) 278 ),
279
280 TP_printk("task %s:%d [%d]",
281 __entry->comm, __entry->pid, __entry->prio)
282); 282);
283 283
284/* 284/*
@@ -297,16 +297,16 @@ TRACE_EVENT(sched_process_fork,
297 __field( pid_t, child_pid ) 297 __field( pid_t, child_pid )
298 ), 298 ),
299 299
300 TP_printk("parent %s:%d child %s:%d",
301 __entry->parent_comm, __entry->parent_pid,
302 __entry->child_comm, __entry->child_pid),
303
304 TP_fast_assign( 300 TP_fast_assign(
305 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN); 301 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
306 __entry->parent_pid = parent->pid; 302 __entry->parent_pid = parent->pid;
307 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN); 303 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
308 __entry->child_pid = child->pid; 304 __entry->child_pid = child->pid;
309 ) 305 ),
306
307 TP_printk("parent %s:%d child %s:%d",
308 __entry->parent_comm, __entry->parent_pid,
309 __entry->child_comm, __entry->child_pid)
310); 310);
311 311
312/* 312/*
@@ -324,14 +324,14 @@ TRACE_EVENT(sched_signal_send,
324 __field( pid_t, pid ) 324 __field( pid_t, pid )
325 ), 325 ),
326 326
327 TP_printk("sig: %d task %s:%d",
328 __entry->sig, __entry->comm, __entry->pid),
329
330 TP_fast_assign( 327 TP_fast_assign(
331 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 328 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
332 __entry->pid = p->pid; 329 __entry->pid = p->pid;
333 __entry->sig = sig; 330 __entry->sig = sig;
334 ) 331 ),
332
333 TP_printk("sig: %d task %s:%d",
334 __entry->sig, __entry->comm, __entry->pid)
335); 335);
336 336
337#undef TRACE_SYSTEM 337#undef TRACE_SYSTEM
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index d24a10b8411a..1f32e4edf490 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -33,7 +33,7 @@ static struct trace_array *blk_tr;
33static int __read_mostly blk_tracer_enabled; 33static int __read_mostly blk_tracer_enabled;
34 34
35/* Select an alternative, minimalistic output than the original one */ 35/* Select an alternative, minimalistic output than the original one */
36#define TRACE_BLK_OPT_CLASSIC 0x1 36#define TRACE_BLK_OPT_CLASSIC 0x1
37 37
38static struct tracer_opt blk_tracer_opts[] = { 38static struct tracer_opt blk_tracer_opts[] = {
39 /* Default disable the minimalistic output */ 39 /* Default disable the minimalistic output */
@@ -564,7 +564,7 @@ EXPORT_SYMBOL_GPL(blk_trace_startstop);
564/** 564/**
565 * blk_trace_ioctl: - handle the ioctls associated with tracing 565 * blk_trace_ioctl: - handle the ioctls associated with tracing
566 * @bdev: the block device 566 * @bdev: the block device
567 * @cmd: the ioctl cmd 567 * @cmd: the ioctl cmd
568 * @arg: the argument data, if any 568 * @arg: the argument data, if any
569 * 569 *
570 **/ 570 **/
@@ -1128,9 +1128,9 @@ static void blk_tracer_reset(struct trace_array *tr)
1128 1128
1129static struct { 1129static struct {
1130 const char *act[2]; 1130 const char *act[2];
1131 int (*print)(struct trace_seq *s, const struct trace_entry *ent); 1131 int (*print)(struct trace_seq *s, const struct trace_entry *ent);
1132} what2act[] __read_mostly = { 1132} what2act[] __read_mostly = {
1133 [__BLK_TA_QUEUE] = {{ "Q", "queue" }, blk_log_generic }, 1133 [__BLK_TA_QUEUE] = {{ "Q", "queue" }, blk_log_generic },
1134 [__BLK_TA_BACKMERGE] = {{ "M", "backmerge" }, blk_log_generic }, 1134 [__BLK_TA_BACKMERGE] = {{ "M", "backmerge" }, blk_log_generic },
1135 [__BLK_TA_FRONTMERGE] = {{ "F", "frontmerge" }, blk_log_generic }, 1135 [__BLK_TA_FRONTMERGE] = {{ "F", "frontmerge" }, blk_log_generic },
1136 [__BLK_TA_GETRQ] = {{ "G", "getrq" }, blk_log_generic }, 1136 [__BLK_TA_GETRQ] = {{ "G", "getrq" }, blk_log_generic },
@@ -1229,7 +1229,7 @@ static struct tracer blk_tracer __read_mostly = {
1229}; 1229};
1230 1230
1231static struct trace_event trace_blk_event = { 1231static struct trace_event trace_blk_event = {
1232 .type = TRACE_BLK, 1232 .type = TRACE_BLK,
1233 .trace = blk_trace_event_print, 1233 .trace = blk_trace_event_print,
1234 .binary = blk_trace_event_print_binary, 1234 .binary = blk_trace_event_print_binary,
1235}; 1235};
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index e5b56199e5e0..a941d257b619 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -799,7 +799,7 @@ tracing_generic_entry_update(struct trace_entry *entry, unsigned long flags,
799 799
800 entry->preempt_count = pc & 0xff; 800 entry->preempt_count = pc & 0xff;
801 entry->pid = (tsk) ? tsk->pid : 0; 801 entry->pid = (tsk) ? tsk->pid : 0;
802 entry->tgid = (tsk) ? tsk->tgid : 0; 802 entry->tgid = (tsk) ? tsk->tgid : 0;
803 entry->flags = 803 entry->flags =
804#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT 804#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
805 (irqs_disabled_flags(flags) ? TRACE_FLAG_IRQS_OFF : 0) | 805 (irqs_disabled_flags(flags) ? TRACE_FLAG_IRQS_OFF : 0) |
diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c
index aaa0755268b9..ad8c22efff41 100644
--- a/kernel/trace/trace_branch.c
+++ b/kernel/trace/trace_branch.c
@@ -157,7 +157,7 @@ static enum print_line_t trace_branch_print(struct trace_iterator *iter,
157 157
158 158
159static struct trace_event trace_branch_event = { 159static struct trace_event trace_branch_event = {
160 .type = TRACE_BRANCH, 160 .type = TRACE_BRANCH,
161 .trace = trace_branch_print, 161 .trace = trace_branch_print,
162}; 162};
163 163
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 1880a6438097..769dfd00fc85 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -102,7 +102,7 @@ static int ftrace_set_clr_event(char *buf, int set)
102 mutex_lock(&event_mutex); 102 mutex_lock(&event_mutex);
103 events_for_each(call) { 103 events_for_each(call) {
104 104
105 if (!call->name) 105 if (!call->name || !call->regfunc)
106 continue; 106 continue;
107 107
108 if (match && 108 if (match &&
@@ -207,8 +207,20 @@ t_next(struct seq_file *m, void *v, loff_t *pos)
207 207
208 (*pos)++; 208 (*pos)++;
209 209
210 if ((unsigned long)call >= (unsigned long)__stop_ftrace_events) 210 for (;;) {
211 return NULL; 211 if ((unsigned long)call >= (unsigned long)__stop_ftrace_events)
212 return NULL;
213
214 /*
215 * The ftrace subsystem is for showing formats only.
216 * They can not be enabled or disabled via the event files.
217 */
218 if (call->regfunc)
219 break;
220
221 call++;
222 next = call;
223 }
212 224
213 m->private = ++next; 225 m->private = ++next;
214 226
@@ -338,8 +350,7 @@ event_enable_write(struct file *filp, const char __user *ubuf, size_t cnt,
338 350
339#undef FIELD 351#undef FIELD
340#define FIELD(type, name) \ 352#define FIELD(type, name) \
341 #type, #name, (unsigned int)offsetof(typeof(field), name), \ 353 #type, #name, offsetof(typeof(field), name), sizeof(field.name)
342 (unsigned int)sizeof(field.name)
343 354
344static int trace_write_header(struct trace_seq *s) 355static int trace_write_header(struct trace_seq *s)
345{ 356{
@@ -347,11 +358,11 @@ static int trace_write_header(struct trace_seq *s)
347 358
348 /* struct trace_entry */ 359 /* struct trace_entry */
349 return trace_seq_printf(s, 360 return trace_seq_printf(s,
350 "\tfield:%s %s;\toffset:%u;\tsize:%u;\n" 361 "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
351 "\tfield:%s %s;\toffset:%u;\tsize:%u;\n" 362 "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
352 "\tfield:%s %s;\toffset:%u;\tsize:%u;\n" 363 "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
353 "\tfield:%s %s;\toffset:%u;\tsize:%u;\n" 364 "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
354 "\tfield:%s %s;\toffset:%u;\tsize:%u;\n" 365 "\tfield:%s %s;\toffset:%zu;\tsize:%zu;\n"
355 "\n", 366 "\n",
356 FIELD(unsigned char, type), 367 FIELD(unsigned char, type),
357 FIELD(unsigned char, flags), 368 FIELD(unsigned char, flags),
@@ -417,6 +428,13 @@ static const struct seq_operations show_set_event_seq_ops = {
417 .stop = t_stop, 428 .stop = t_stop,
418}; 429};
419 430
431static const struct file_operations ftrace_avail_fops = {
432 .open = ftrace_event_seq_open,
433 .read = seq_read,
434 .llseek = seq_lseek,
435 .release = seq_release,
436};
437
420static const struct file_operations ftrace_set_event_fops = { 438static const struct file_operations ftrace_set_event_fops = {
421 .open = ftrace_event_seq_open, 439 .open = ftrace_event_seq_open,
422 .read = seq_read, 440 .read = seq_read,
@@ -558,6 +576,13 @@ static __init int event_trace_init(void)
558 if (!d_tracer) 576 if (!d_tracer)
559 return 0; 577 return 0;
560 578
579 entry = debugfs_create_file("available_events", 0444, d_tracer,
580 (void *)&show_event_seq_ops,
581 &ftrace_avail_fops);
582 if (!entry)
583 pr_warning("Could not create debugfs "
584 "'available_events' entry\n");
585
561 entry = debugfs_create_file("set_event", 0644, d_tracer, 586 entry = debugfs_create_file("set_event", 0644, d_tracer,
562 (void *)&show_set_event_seq_ops, 587 (void *)&show_set_event_seq_ops,
563 &ftrace_set_event_fops); 588 &ftrace_set_event_fops);
diff --git a/kernel/trace/trace_events_stage_1.h b/kernel/trace/trace_events_stage_1.h
index 15e9bf965a18..38985f9b379c 100644
--- a/kernel/trace/trace_events_stage_1.h
+++ b/kernel/trace/trace_events_stage_1.h
@@ -6,11 +6,13 @@
6 * struct ftrace_raw_<call> { 6 * struct ftrace_raw_<call> {
7 * struct trace_entry ent; 7 * struct trace_entry ent;
8 * <type> <item>; 8 * <type> <item>;
9 * <type2> <item2>[<len>];
9 * [...] 10 * [...]
10 * }; 11 * };
11 * 12 *
12 * The <type> <item> is created by the TRACE_FIELD(type, item, assign) 13 * The <type> <item> is created by the __field(type, item) macro or
13 * macro. We simply do "type item;", and that will create the fields 14 * the __array(type2, item2, len) macro.
15 * We simply do "type item;", and that will create the fields
14 * in the structure. 16 * in the structure.
15 */ 17 */
16 18
@@ -27,7 +29,7 @@
27#define TP_STRUCT__entry(args...) args 29#define TP_STRUCT__entry(args...) args
28 30
29#undef TRACE_EVENT 31#undef TRACE_EVENT
30#define TRACE_EVENT(name, proto, args, tstruct, print, assign) \ 32#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
31 struct ftrace_raw_##name { \ 33 struct ftrace_raw_##name { \
32 struct trace_entry ent; \ 34 struct trace_entry ent; \
33 tstruct \ 35 tstruct \
diff --git a/kernel/trace/trace_events_stage_2.h b/kernel/trace/trace_events_stage_2.h
index d91bf4c56661..ca347afd6aa0 100644
--- a/kernel/trace/trace_events_stage_2.h
+++ b/kernel/trace/trace_events_stage_2.h
@@ -20,7 +20,7 @@
20 * 20 *
21 * field = (typeof(field))entry; 21 * field = (typeof(field))entry;
22 * 22 *
23 * ret = trace_seq_printf(s, <TP_RAW_FMT> "%s", <ARGS> "\n"); 23 * ret = trace_seq_printf(s, <TP_printk> "\n");
24 * if (!ret) 24 * if (!ret)
25 * return TRACE_TYPE_PARTIAL_LINE; 25 * return TRACE_TYPE_PARTIAL_LINE;
26 * 26 *
@@ -39,7 +39,7 @@
39#define TP_printk(fmt, args...) fmt "\n", args 39#define TP_printk(fmt, args...) fmt "\n", args
40 40
41#undef TRACE_EVENT 41#undef TRACE_EVENT
42#define TRACE_EVENT(call, proto, args, tstruct, print, assign) \ 42#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
43enum print_line_t \ 43enum print_line_t \
44ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \ 44ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
45{ \ 45{ \
@@ -76,10 +76,9 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
76 * int ret; 76 * int ret;
77 * 77 *
78 * ret = trace_seq_printf(s, #type " " #item ";" 78 * ret = trace_seq_printf(s, #type " " #item ";"
79 * " size:%d; offset:%d;\n", 79 * " offset:%u; size:%u;\n",
80 * sizeof(field.type), 80 * offsetof(struct ftrace_raw_##call, item),
81 * offsetof(struct ftrace_raw_##call, 81 * sizeof(field.type));
82 * item));
83 * 82 *
84 * } 83 * }
85 */ 84 */
@@ -115,7 +114,7 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
115#define TP_fast_assign(args...) args 114#define TP_fast_assign(args...) args
116 115
117#undef TRACE_EVENT 116#undef TRACE_EVENT
118#define TRACE_EVENT(call, proto, args, tstruct, print, func) \ 117#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
119static int \ 118static int \
120ftrace_format_##call(struct trace_seq *s) \ 119ftrace_format_##call(struct trace_seq *s) \
121{ \ 120{ \
diff --git a/kernel/trace/trace_events_stage_3.h b/kernel/trace/trace_events_stage_3.h
index 3ba55d4ab073..ae2e323df0c7 100644
--- a/kernel/trace/trace_events_stage_3.h
+++ b/kernel/trace/trace_events_stage_3.h
@@ -5,23 +5,23 @@
5 * 5 *
6 * static void ftrace_event_<call>(proto) 6 * static void ftrace_event_<call>(proto)
7 * { 7 * {
8 * event_trace_printk(_RET_IP_, "<call>: " <fmt>); 8 * event_trace_printk(_RET_IP_, "<call>: " <fmt>);
9 * } 9 * }
10 * 10 *
11 * static int ftrace_reg_event_<call>(void) 11 * static int ftrace_reg_event_<call>(void)
12 * { 12 * {
13 * int ret; 13 * int ret;
14 * 14 *
15 * ret = register_trace_<call>(ftrace_event_<call>); 15 * ret = register_trace_<call>(ftrace_event_<call>);
16 * if (!ret) 16 * if (!ret)
17 * pr_info("event trace: Could not activate trace point " 17 * pr_info("event trace: Could not activate trace point "
18 * "probe to <call>"); 18 * "probe to <call>");
19 * return ret; 19 * return ret;
20 * } 20 * }
21 * 21 *
22 * static void ftrace_unreg_event_<call>(void) 22 * static void ftrace_unreg_event_<call>(void)
23 * { 23 * {
24 * unregister_trace_<call>(ftrace_event_<call>); 24 * unregister_trace_<call>(ftrace_event_<call>);
25 * } 25 * }
26 * 26 *
27 * For those macros defined with TRACE_FORMAT: 27 * For those macros defined with TRACE_FORMAT:
@@ -29,9 +29,9 @@
29 * static struct ftrace_event_call __used 29 * static struct ftrace_event_call __used
30 * __attribute__((__aligned__(4))) 30 * __attribute__((__aligned__(4)))
31 * __attribute__((section("_ftrace_events"))) event_<call> = { 31 * __attribute__((section("_ftrace_events"))) event_<call> = {
32 * .name = "<call>", 32 * .name = "<call>",
33 * .regfunc = ftrace_reg_event_<call>, 33 * .regfunc = ftrace_reg_event_<call>,
34 * .unregfunc = ftrace_unreg_event_<call>, 34 * .unregfunc = ftrace_unreg_event_<call>,
35 * } 35 * }
36 * 36 *
37 * 37 *
@@ -41,66 +41,66 @@
41 * 41 *
42 * static void ftrace_raw_event_<call>(proto) 42 * static void ftrace_raw_event_<call>(proto)
43 * { 43 * {
44 * struct ring_buffer_event *event; 44 * struct ring_buffer_event *event;
45 * struct ftrace_raw_<call> *entry; <-- defined in stage 1 45 * struct ftrace_raw_<call> *entry; <-- defined in stage 1
46 * unsigned long irq_flags; 46 * unsigned long irq_flags;
47 * int pc; 47 * int pc;
48 * 48 *
49 * local_save_flags(irq_flags); 49 * local_save_flags(irq_flags);
50 * pc = preempt_count(); 50 * pc = preempt_count();
51 * 51 *
52 * event = trace_current_buffer_lock_reserve(event_<call>.id, 52 * event = trace_current_buffer_lock_reserve(event_<call>.id,
53 * sizeof(struct ftrace_raw_<call>), 53 * sizeof(struct ftrace_raw_<call>),
54 * irq_flags, pc); 54 * irq_flags, pc);
55 * if (!event) 55 * if (!event)
56 * return; 56 * return;
57 * entry = ring_buffer_event_data(event); 57 * entry = ring_buffer_event_data(event);
58 * 58 *
59 * <tstruct>; <-- Here we assign the entries by the TRACE_FIELD. 59 * <assign>; <-- Here we assign the entries by the __field and
60 * __array macros.
60 * 61 *
61 * trace_current_buffer_unlock_commit(event, irq_flags, pc); 62 * trace_current_buffer_unlock_commit(event, irq_flags, pc);
62 * } 63 * }
63 * 64 *
64 * static int ftrace_raw_reg_event_<call>(void) 65 * static int ftrace_raw_reg_event_<call>(void)
65 * { 66 * {
66 * int ret; 67 * int ret;
67 * 68 *
68 * ret = register_trace_<call>(ftrace_raw_event_<call>); 69 * ret = register_trace_<call>(ftrace_raw_event_<call>);
69 * if (!ret) 70 * if (!ret)
70 * pr_info("event trace: Could not activate trace point " 71 * pr_info("event trace: Could not activate trace point "
71 * "probe to <call>"); 72 * "probe to <call>");
72 * return ret; 73 * return ret;
73 * } 74 * }
74 * 75 *
75 * static void ftrace_unreg_event_<call>(void) 76 * static void ftrace_unreg_event_<call>(void)
76 * { 77 * {
77 * unregister_trace_<call>(ftrace_raw_event_<call>); 78 * unregister_trace_<call>(ftrace_raw_event_<call>);
78 * } 79 * }
79 * 80 *
80 * static struct trace_event ftrace_event_type_<call> = { 81 * static struct trace_event ftrace_event_type_<call> = {
81 * .trace = ftrace_raw_output_<call>, <-- stage 2 82 * .trace = ftrace_raw_output_<call>, <-- stage 2
82 * }; 83 * };
83 * 84 *
84 * static int ftrace_raw_init_event_<call>(void) 85 * static int ftrace_raw_init_event_<call>(void)
85 * { 86 * {
86 * int id; 87 * int id;
87 * 88 *
88 * id = register_ftrace_event(&ftrace_event_type_<call>); 89 * id = register_ftrace_event(&ftrace_event_type_<call>);
89 * if (!id) 90 * if (!id)
90 * return -ENODEV; 91 * return -ENODEV;
91 * event_<call>.id = id; 92 * event_<call>.id = id;
92 * return 0; 93 * return 0;
93 * } 94 * }
94 * 95 *
95 * static struct ftrace_event_call __used 96 * static struct ftrace_event_call __used
96 * __attribute__((__aligned__(4))) 97 * __attribute__((__aligned__(4)))
97 * __attribute__((section("_ftrace_events"))) event_<call> = { 98 * __attribute__((section("_ftrace_events"))) event_<call> = {
98 * .name = "<call>", 99 * .name = "<call>",
99 * .regfunc = ftrace_reg_event_<call>, 100 * .system = "<system>",
100 * .unregfunc = ftrace_unreg_event_<call>, 101 * .raw_init = ftrace_raw_init_event_<call>,
101 * .raw_init = ftrace_raw_init_event_<call>, 102 * .regfunc = ftrace_reg_event_<call>,
102 * .raw_reg = ftrace_raw_reg_event_<call>, 103 * .unregfunc = ftrace_unreg_event_<call>,
103 * .raw_unreg = ftrace_raw_unreg_event_<call>,
104 * .show_format = ftrace_format_<call>, 104 * .show_format = ftrace_format_<call>,
105 * } 105 * }
106 * 106 *
@@ -138,7 +138,7 @@ _TRACE_FORMAT(call, PARAMS(proto), PARAMS(args), PARAMS(fmt)) \
138static struct ftrace_event_call __used \ 138static struct ftrace_event_call __used \
139__attribute__((__aligned__(4))) \ 139__attribute__((__aligned__(4))) \
140__attribute__((section("_ftrace_events"))) event_##call = { \ 140__attribute__((section("_ftrace_events"))) event_##call = { \
141 .name = #call, \ 141 .name = #call, \
142 .system = __stringify(TRACE_SYSTEM), \ 142 .system = __stringify(TRACE_SYSTEM), \
143 .regfunc = ftrace_reg_event_##call, \ 143 .regfunc = ftrace_reg_event_##call, \
144 .unregfunc = ftrace_unreg_event_##call, \ 144 .unregfunc = ftrace_unreg_event_##call, \
@@ -148,7 +148,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
148#define __entry entry 148#define __entry entry
149 149
150#undef TRACE_EVENT 150#undef TRACE_EVENT
151#define TRACE_EVENT(call, proto, args, tstruct, print, assign) \ 151#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
152 \ 152 \
153static struct ftrace_event_call event_##call; \ 153static struct ftrace_event_call event_##call; \
154 \ 154 \
@@ -163,7 +163,7 @@ static void ftrace_raw_event_##call(proto) \
163 pc = preempt_count(); \ 163 pc = preempt_count(); \
164 \ 164 \
165 event = trace_current_buffer_lock_reserve(event_##call.id, \ 165 event = trace_current_buffer_lock_reserve(event_##call.id, \
166 sizeof(struct ftrace_raw_##call), \ 166 sizeof(struct ftrace_raw_##call), \
167 irq_flags, pc); \ 167 irq_flags, pc); \
168 if (!event) \ 168 if (!event) \
169 return; \ 169 return; \
@@ -208,7 +208,7 @@ static int ftrace_raw_init_event_##call(void) \
208static struct ftrace_event_call __used \ 208static struct ftrace_event_call __used \
209__attribute__((__aligned__(4))) \ 209__attribute__((__aligned__(4))) \
210__attribute__((section("_ftrace_events"))) event_##call = { \ 210__attribute__((section("_ftrace_events"))) event_##call = { \
211 .name = #call, \ 211 .name = #call, \
212 .system = __stringify(TRACE_SYSTEM), \ 212 .system = __stringify(TRACE_SYSTEM), \
213 .raw_init = ftrace_raw_init_event_##call, \ 213 .raw_init = ftrace_raw_init_event_##call, \
214 .regfunc = ftrace_raw_reg_event_##call, \ 214 .regfunc = ftrace_raw_reg_event_##call, \
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index 23ae78430d58..4d9952d3df50 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -94,7 +94,7 @@ ftrace_format_##call(struct trace_seq *s) \
94static struct ftrace_event_call __used \ 94static struct ftrace_event_call __used \
95__attribute__((__aligned__(4))) \ 95__attribute__((__aligned__(4))) \
96__attribute__((section("_ftrace_events"))) event_##call = { \ 96__attribute__((section("_ftrace_events"))) event_##call = { \
97 .name = #call, \ 97 .name = #call, \
98 .id = proto, \ 98 .id = proto, \
99 .system = __stringify(TRACE_SYSTEM), \ 99 .system = __stringify(TRACE_SYSTEM), \
100 .show_format = ftrace_format_##call, \ 100 .show_format = ftrace_format_##call, \
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 35257be6a9d6..8566c14b3e9a 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -841,12 +841,12 @@ static void graph_trace_close(struct trace_iterator *iter)
841} 841}
842 842
843static struct tracer graph_trace __read_mostly = { 843static struct tracer graph_trace __read_mostly = {
844 .name = "function_graph", 844 .name = "function_graph",
845 .open = graph_trace_open, 845 .open = graph_trace_open,
846 .close = graph_trace_close, 846 .close = graph_trace_close,
847 .wait_pipe = poll_wait_pipe, 847 .wait_pipe = poll_wait_pipe,
848 .init = graph_trace_init, 848 .init = graph_trace_init,
849 .reset = graph_trace_reset, 849 .reset = graph_trace_reset,
850 .print_line = print_graph_function, 850 .print_line = print_graph_function,
851 .print_header = print_graph_headers, 851 .print_header = print_graph_headers,
852 .flags = &tracer_flags, 852 .flags = &tracer_flags,
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index ef8fd661b217..491832af9ba1 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -565,7 +565,7 @@ static enum print_line_t trace_fn_bin(struct trace_iterator *iter, int flags)
565} 565}
566 566
567static struct trace_event trace_fn_event = { 567static struct trace_event trace_fn_event = {
568 .type = TRACE_FN, 568 .type = TRACE_FN,
569 .trace = trace_fn_trace, 569 .trace = trace_fn_trace,
570 .raw = trace_fn_raw, 570 .raw = trace_fn_raw,
571 .hex = trace_fn_hex, 571 .hex = trace_fn_hex,
@@ -696,7 +696,7 @@ static enum print_line_t trace_ctxwake_bin(struct trace_iterator *iter,
696} 696}
697 697
698static struct trace_event trace_ctx_event = { 698static struct trace_event trace_ctx_event = {
699 .type = TRACE_CTX, 699 .type = TRACE_CTX,
700 .trace = trace_ctx_print, 700 .trace = trace_ctx_print,
701 .raw = trace_ctx_raw, 701 .raw = trace_ctx_raw,
702 .hex = trace_ctx_hex, 702 .hex = trace_ctx_hex,
@@ -704,7 +704,7 @@ static struct trace_event trace_ctx_event = {
704}; 704};
705 705
706static struct trace_event trace_wake_event = { 706static struct trace_event trace_wake_event = {
707 .type = TRACE_WAKE, 707 .type = TRACE_WAKE,
708 .trace = trace_wake_print, 708 .trace = trace_wake_print,
709 .raw = trace_wake_raw, 709 .raw = trace_wake_raw,
710 .hex = trace_wake_hex, 710 .hex = trace_wake_hex,
@@ -759,7 +759,7 @@ static enum print_line_t trace_special_bin(struct trace_iterator *iter,
759} 759}
760 760
761static struct trace_event trace_special_event = { 761static struct trace_event trace_special_event = {
762 .type = TRACE_SPECIAL, 762 .type = TRACE_SPECIAL,
763 .trace = trace_special_print, 763 .trace = trace_special_print,
764 .raw = trace_special_print, 764 .raw = trace_special_print,
765 .hex = trace_special_hex, 765 .hex = trace_special_hex,
@@ -796,7 +796,7 @@ static enum print_line_t trace_stack_print(struct trace_iterator *iter,
796} 796}
797 797
798static struct trace_event trace_stack_event = { 798static struct trace_event trace_stack_event = {
799 .type = TRACE_STACK, 799 .type = TRACE_STACK,
800 .trace = trace_stack_print, 800 .trace = trace_stack_print,
801 .raw = trace_special_print, 801 .raw = trace_special_print,
802 .hex = trace_special_hex, 802 .hex = trace_special_hex,
@@ -825,7 +825,7 @@ static enum print_line_t trace_user_stack_print(struct trace_iterator *iter,
825} 825}
826 826
827static struct trace_event trace_user_stack_event = { 827static struct trace_event trace_user_stack_event = {
828 .type = TRACE_USER_STACK, 828 .type = TRACE_USER_STACK,
829 .trace = trace_user_stack_print, 829 .trace = trace_user_stack_print,
830 .raw = trace_special_print, 830 .raw = trace_special_print,
831 .hex = trace_special_hex, 831 .hex = trace_special_hex,
@@ -879,7 +879,7 @@ static enum print_line_t trace_print_raw(struct trace_iterator *iter, int flags)
879 879
880 880
881static struct trace_event trace_print_event = { 881static struct trace_event trace_print_event = {
882 .type = TRACE_PRINT, 882 .type = TRACE_PRINT,
883 .trace = trace_print_print, 883 .trace = trace_print_print,
884 .raw = trace_print_raw, 884 .raw = trace_print_raw,
885}; 885};
diff --git a/kernel/trace/trace_workqueue.c b/kernel/trace/trace_workqueue.c
index 739fdacf873b..fb5ccac8bbc0 100644
--- a/kernel/trace/trace_workqueue.c
+++ b/kernel/trace/trace_workqueue.c
@@ -19,14 +19,14 @@ struct cpu_workqueue_stats {
19/* Useful to know if we print the cpu headers */ 19/* Useful to know if we print the cpu headers */
20 bool first_entry; 20 bool first_entry;
21 int cpu; 21 int cpu;
22 pid_t pid; 22 pid_t pid;
23/* Can be inserted from interrupt or user context, need to be atomic */ 23/* Can be inserted from interrupt or user context, need to be atomic */
24 atomic_t inserted; 24 atomic_t inserted;
25/* 25/*
26 * Don't need to be atomic, works are serialized in a single workqueue thread 26 * Don't need to be atomic, works are serialized in a single workqueue thread
27 * on a single CPU. 27 * on a single CPU.
28 */ 28 */
29 unsigned int executed; 29 unsigned int executed;
30}; 30};
31 31
32/* List of workqueue threads on one cpu */ 32/* List of workqueue threads on one cpu */
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-30 04:18:34 -0500