GFS2: Wait for unlock completion on umount
[linux-2.6.git] / fs / gfs2 / trace_gfs2.h
1 #undef TRACE_SYSTEM
2 #define TRACE_SYSTEM gfs2
3
4 #if !defined(_TRACE_GFS2_H) || defined(TRACE_HEADER_MULTI_READ)
5 #define _TRACE_GFS2_H
6
7 #include <linux/tracepoint.h>
8
9 #include <linux/fs.h>
10 #include <linux/buffer_head.h>
11 #include <linux/dlmconstants.h>
12 #include <linux/gfs2_ondisk.h>
13 #include "incore.h"
14 #include "glock.h"
15
16 #define dlm_state_name(nn) { DLM_LOCK_##nn, #nn }
17 #define glock_trace_name(x) __print_symbolic(x,         \
18                             dlm_state_name(IV),         \
19                             dlm_state_name(NL),         \
20                             dlm_state_name(CR),         \
21                             dlm_state_name(CW),         \
22                             dlm_state_name(PR),         \
23                             dlm_state_name(PW),         \
24                             dlm_state_name(EX))
25
26 #define block_state_name(x) __print_symbolic(x,                 \
27                             { GFS2_BLKST_FREE, "free" },        \
28                             { GFS2_BLKST_USED, "used" },        \
29                             { GFS2_BLKST_DINODE, "dinode" },    \
30                             { GFS2_BLKST_UNLINKED, "unlinked" })
31
32 #define show_glock_flags(flags) __print_flags(flags, "",        \
33         {(1UL << GLF_LOCK),                     "l" },          \
34         {(1UL << GLF_DEMOTE),                   "D" },          \
35         {(1UL << GLF_PENDING_DEMOTE),           "d" },          \
36         {(1UL << GLF_DEMOTE_IN_PROGRESS),       "p" },          \
37         {(1UL << GLF_DIRTY),                    "y" },          \
38         {(1UL << GLF_LFLUSH),                   "f" },          \
39         {(1UL << GLF_INVALIDATE_IN_PROGRESS),   "i" },          \
40         {(1UL << GLF_REPLY_PENDING),            "r" },          \
41         {(1UL << GLF_INITIAL),                  "I" },          \
42         {(1UL << GLF_FROZEN),                   "F" })
43
44 #ifndef NUMPTY
45 #define NUMPTY
46 static inline u8 glock_trace_state(unsigned int state)
47 {
48         switch(state) {
49         case LM_ST_SHARED:
50                 return DLM_LOCK_PR;
51         case LM_ST_DEFERRED:
52                 return DLM_LOCK_CW;
53         case LM_ST_EXCLUSIVE:
54                 return DLM_LOCK_EX;
55         }
56         return DLM_LOCK_NL;
57 }
58 #endif
59
60 /* Section 1 - Locking
61  *
62  * Objectives:
63  * Latency: Remote demote request to state change
64  * Latency: Local lock request to state change
65  * Latency: State change to lock grant
66  * Correctness: Ordering of local lock state vs. I/O requests
67  * Correctness: Responses to remote demote requests
68  */
69
70 /* General glock state change (DLM lock request completes) */
71 TRACE_EVENT(gfs2_glock_state_change,
72
73         TP_PROTO(const struct gfs2_glock *gl, unsigned int new_state),
74
75         TP_ARGS(gl, new_state),
76
77         TP_STRUCT__entry(
78                 __field(        dev_t,  dev                     )
79                 __field(        u64,    glnum                   )
80                 __field(        u32,    gltype                  )
81                 __field(        u8,     cur_state               )
82                 __field(        u8,     new_state               )
83                 __field(        u8,     dmt_state               )
84                 __field(        u8,     tgt_state               )
85                 __field(        unsigned long,  flags           )
86         ),
87
88         TP_fast_assign(
89                 __entry->dev            = gl->gl_sbd->sd_vfs->s_dev;
90                 __entry->glnum          = gl->gl_name.ln_number;
91                 __entry->gltype         = gl->gl_name.ln_type;
92                 __entry->cur_state      = glock_trace_state(gl->gl_state);
93                 __entry->new_state      = glock_trace_state(new_state);
94                 __entry->tgt_state      = glock_trace_state(gl->gl_target);
95                 __entry->dmt_state      = glock_trace_state(gl->gl_demote_state);
96                 __entry->flags          = gl->gl_flags;
97         ),
98
99         TP_printk("%u,%u glock %d:%lld state %s to %s tgt:%s dmt:%s flags:%s",
100                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
101                  (unsigned long long)__entry->glnum,
102                   glock_trace_name(__entry->cur_state),
103                   glock_trace_name(__entry->new_state),
104                   glock_trace_name(__entry->tgt_state),
105                   glock_trace_name(__entry->dmt_state),
106                   show_glock_flags(__entry->flags))
107 );
108
109 /* State change -> unlocked, glock is being deallocated */
110 TRACE_EVENT(gfs2_glock_put,
111
112         TP_PROTO(const struct gfs2_glock *gl),
113
114         TP_ARGS(gl),
115
116         TP_STRUCT__entry(
117                 __field(        dev_t,  dev                     )
118                 __field(        u64,    glnum                   )
119                 __field(        u32,    gltype                  )
120                 __field(        u8,     cur_state               )
121                 __field(        unsigned long,  flags           )
122         ),
123
124         TP_fast_assign(
125                 __entry->dev            = gl->gl_sbd->sd_vfs->s_dev;
126                 __entry->gltype         = gl->gl_name.ln_type;
127                 __entry->glnum          = gl->gl_name.ln_number;
128                 __entry->cur_state      = glock_trace_state(gl->gl_state);
129                 __entry->flags          = gl->gl_flags;
130         ),
131
132         TP_printk("%u,%u glock %d:%lld state %s => %s flags:%s",
133                   MAJOR(__entry->dev), MINOR(__entry->dev),
134                   __entry->gltype, (unsigned long long)__entry->glnum,
135                   glock_trace_name(__entry->cur_state),
136                   glock_trace_name(DLM_LOCK_IV),
137                   show_glock_flags(__entry->flags))
138
139 );
140
141 /* Callback (local or remote) requesting lock demotion */
142 TRACE_EVENT(gfs2_demote_rq,
143
144         TP_PROTO(const struct gfs2_glock *gl),
145
146         TP_ARGS(gl),
147
148         TP_STRUCT__entry(
149                 __field(        dev_t,  dev                     )
150                 __field(        u64,    glnum                   )
151                 __field(        u32,    gltype                  )
152                 __field(        u8,     cur_state               )
153                 __field(        u8,     dmt_state               )
154                 __field(        unsigned long,  flags           )
155         ),
156
157         TP_fast_assign(
158                 __entry->dev            = gl->gl_sbd->sd_vfs->s_dev;
159                 __entry->gltype         = gl->gl_name.ln_type;
160                 __entry->glnum          = gl->gl_name.ln_number;
161                 __entry->cur_state      = glock_trace_state(gl->gl_state);
162                 __entry->dmt_state      = glock_trace_state(gl->gl_demote_state);
163                 __entry->flags          = gl->gl_flags;
164         ),
165
166         TP_printk("%u,%u glock %d:%lld demote %s to %s flags:%s",
167                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
168                   (unsigned long long)__entry->glnum,
169                   glock_trace_name(__entry->cur_state),
170                   glock_trace_name(__entry->dmt_state),
171                   show_glock_flags(__entry->flags))
172
173 );
174
175 /* Promotion/grant of a glock */
176 TRACE_EVENT(gfs2_promote,
177
178         TP_PROTO(const struct gfs2_holder *gh, int first),
179
180         TP_ARGS(gh, first),
181
182         TP_STRUCT__entry(
183                 __field(        dev_t,  dev                     )
184                 __field(        u64,    glnum                   )
185                 __field(        u32,    gltype                  )
186                 __field(        int,    first                   )
187                 __field(        u8,     state                   )
188         ),
189
190         TP_fast_assign(
191                 __entry->dev    = gh->gh_gl->gl_sbd->sd_vfs->s_dev;
192                 __entry->glnum  = gh->gh_gl->gl_name.ln_number;
193                 __entry->gltype = gh->gh_gl->gl_name.ln_type;
194                 __entry->first  = first;
195                 __entry->state  = glock_trace_state(gh->gh_state);
196         ),
197
198         TP_printk("%u,%u glock %u:%llu promote %s %s",
199                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
200                   (unsigned long long)__entry->glnum,
201                   __entry->first ? "first": "other",
202                   glock_trace_name(__entry->state))
203 );
204
205 /* Queue/dequeue a lock request */
206 TRACE_EVENT(gfs2_glock_queue,
207
208         TP_PROTO(const struct gfs2_holder *gh, int queue),
209
210         TP_ARGS(gh, queue),
211
212         TP_STRUCT__entry(
213                 __field(        dev_t,  dev                     )
214                 __field(        u64,    glnum                   )
215                 __field(        u32,    gltype                  )
216                 __field(        int,    queue                   )
217                 __field(        u8,     state                   )
218         ),
219
220         TP_fast_assign(
221                 __entry->dev    = gh->gh_gl->gl_sbd->sd_vfs->s_dev;
222                 __entry->glnum  = gh->gh_gl->gl_name.ln_number;
223                 __entry->gltype = gh->gh_gl->gl_name.ln_type;
224                 __entry->queue  = queue;
225                 __entry->state  = glock_trace_state(gh->gh_state);
226         ),
227
228         TP_printk("%u,%u glock %u:%llu %squeue %s",
229                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
230                   (unsigned long long)__entry->glnum,
231                   __entry->queue ? "" : "de",
232                   glock_trace_name(__entry->state))
233 );
234
235 /* Section 2 - Log/journal
236  *
237  * Objectives:
238  * Latency: Log flush time
239  * Correctness: pin/unpin vs. disk I/O ordering
240  * Performance: Log usage stats
241  */
242
243 /* Pin/unpin a block in the log */
244 TRACE_EVENT(gfs2_pin,
245
246         TP_PROTO(const struct gfs2_bufdata *bd, int pin),
247
248         TP_ARGS(bd, pin),
249
250         TP_STRUCT__entry(
251                 __field(        dev_t,  dev                     )
252                 __field(        int,    pin                     )
253                 __field(        u32,    len                     )
254                 __field(        sector_t,       block           )
255                 __field(        u64,    ino                     )
256         ),
257
258         TP_fast_assign(
259                 __entry->dev            = bd->bd_gl->gl_sbd->sd_vfs->s_dev;
260                 __entry->pin            = pin;
261                 __entry->len            = bd->bd_bh->b_size;
262                 __entry->block          = bd->bd_bh->b_blocknr;
263                 __entry->ino            = bd->bd_gl->gl_name.ln_number;
264         ),
265
266         TP_printk("%u,%u log %s %llu/%lu inode %llu",
267                   MAJOR(__entry->dev), MINOR(__entry->dev),
268                   __entry->pin ? "pin" : "unpin",
269                   (unsigned long long)__entry->block,
270                   (unsigned long)__entry->len,
271                   (unsigned long long)__entry->ino)
272 );
273
274 /* Flushing the log */
275 TRACE_EVENT(gfs2_log_flush,
276
277         TP_PROTO(const struct gfs2_sbd *sdp, int start),
278
279         TP_ARGS(sdp, start),
280
281         TP_STRUCT__entry(
282                 __field(        dev_t,  dev                     )
283                 __field(        int,    start                   )
284                 __field(        u64,    log_seq                 )
285         ),
286
287         TP_fast_assign(
288                 __entry->dev            = sdp->sd_vfs->s_dev;
289                 __entry->start          = start;
290                 __entry->log_seq        = sdp->sd_log_sequence;
291         ),
292
293         TP_printk("%u,%u log flush %s %llu",
294                   MAJOR(__entry->dev), MINOR(__entry->dev),
295                   __entry->start ? "start" : "end",
296                   (unsigned long long)__entry->log_seq)
297 );
298
299 /* Reserving/releasing blocks in the log */
300 TRACE_EVENT(gfs2_log_blocks,
301
302         TP_PROTO(const struct gfs2_sbd *sdp, int blocks),
303
304         TP_ARGS(sdp, blocks),
305
306         TP_STRUCT__entry(
307                 __field(        dev_t,  dev                     )
308                 __field(        int,    blocks                  )
309         ),
310
311         TP_fast_assign(
312                 __entry->dev            = sdp->sd_vfs->s_dev;
313                 __entry->blocks         = blocks;
314         ),
315
316         TP_printk("%u,%u log reserve %d", MAJOR(__entry->dev),
317                   MINOR(__entry->dev), __entry->blocks)
318 );
319
320 /* Section 3 - bmap
321  *
322  * Objectives:
323  * Latency: Bmap request time
324  * Performance: Block allocator tracing
325  * Correctness: Test of disard generation vs. blocks allocated
326  */
327
328 /* Map an extent of blocks, possibly a new allocation */
329 TRACE_EVENT(gfs2_bmap,
330
331         TP_PROTO(const struct gfs2_inode *ip, const struct buffer_head *bh,
332                 sector_t lblock, int create, int errno),
333
334         TP_ARGS(ip, bh, lblock, create, errno),
335
336         TP_STRUCT__entry(
337                 __field(        dev_t,  dev                     )
338                 __field(        sector_t, lblock                )
339                 __field(        sector_t, pblock                )
340                 __field(        u64,    inum                    )
341                 __field(        unsigned long, state            )
342                 __field(        u32,    len                     )
343                 __field(        int,    create                  )
344                 __field(        int,    errno                   )
345         ),
346
347         TP_fast_assign(
348                 __entry->dev            = ip->i_gl->gl_sbd->sd_vfs->s_dev;
349                 __entry->lblock         = lblock;
350                 __entry->pblock         = buffer_mapped(bh) ?  bh->b_blocknr : 0;
351                 __entry->inum           = ip->i_no_addr;
352                 __entry->state          = bh->b_state;
353                 __entry->len            = bh->b_size;
354                 __entry->create         = create;
355                 __entry->errno          = errno;
356         ),
357
358         TP_printk("%u,%u bmap %llu map %llu/%lu to %llu flags:%08lx %s %d",
359                   MAJOR(__entry->dev), MINOR(__entry->dev),
360                   (unsigned long long)__entry->inum,
361                   (unsigned long long)__entry->lblock,
362                   (unsigned long)__entry->len,
363                   (unsigned long long)__entry->pblock,
364                   __entry->state, __entry->create ? "create " : "nocreate",
365                   __entry->errno)
366 );
367
368 /* Keep track of blocks as they are allocated/freed */
369 TRACE_EVENT(gfs2_block_alloc,
370
371         TP_PROTO(const struct gfs2_inode *ip, u64 block, unsigned len,
372                 u8 block_state),
373
374         TP_ARGS(ip, block, len, block_state),
375
376         TP_STRUCT__entry(
377                 __field(        dev_t,  dev                     )
378                 __field(        u64,    start                   )
379                 __field(        u64,    inum                    )
380                 __field(        u32,    len                     )
381                 __field(        u8,     block_state             )
382         ),
383
384         TP_fast_assign(
385                 __entry->dev            = ip->i_gl->gl_sbd->sd_vfs->s_dev;
386                 __entry->start          = block;
387                 __entry->inum           = ip->i_no_addr;
388                 __entry->len            = len;
389                 __entry->block_state    = block_state;
390         ),
391
392         TP_printk("%u,%u bmap %llu alloc %llu/%lu %s",
393                   MAJOR(__entry->dev), MINOR(__entry->dev),
394                   (unsigned long long)__entry->inum,
395                   (unsigned long long)__entry->start,
396                   (unsigned long)__entry->len,
397                   block_state_name(__entry->block_state))
398 );
399
400 #endif /* _TRACE_GFS2_H */
401
402 /* This part must be outside protection */
403 #undef TRACE_INCLUDE_PATH
404 #define TRACE_INCLUDE_PATH .
405 #define TRACE_INCLUDE_FILE trace_gfs2
406 #include <trace/define_trace.h>
407