1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 #ifndef __LIBCFS_LIBCFS_H__
5 #define __LIBCFS_LIBCFS_H__
8 #define __attribute__(x)
11 #if defined(__linux__)
12 #include <libcfs/linux/libcfs.h>
13 #elif defined(__APPLE__)
14 #include <libcfs/darwin/libcfs.h>
16 #error Unsupported operating system.
24 # define offsetof(typ,memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
27 #define LOWEST_BIT_SET(x) ((x) & ~((x) - 1))
32 extern unsigned int portal_subsystem_debug;
33 extern unsigned int portal_stack;
34 extern unsigned int portal_debug;
35 extern unsigned int portal_printk;
38 * struct ptldebug_header is defined in libcfs/<os>/libcfs.h
41 #define PH_FLAG_FIRST_RECORD 1
43 /* Debugging subsystems (32 bits, non-overlapping) */
44 #define S_UNDEFINED 0x00000001
45 #define S_MDC 0x00000002
46 #define S_MDS 0x00000004
47 #define S_OSC 0x00000008
48 #define S_OST 0x00000010
49 #define S_CLASS 0x00000020
50 #define S_LOG 0x00000040
51 #define S_LLITE 0x00000080
52 #define S_RPC 0x00000100
53 #define S_MGMT 0x00000200
54 #define S_PORTALS 0x00000400
55 #define S_NAL 0x00000800 /* ALL NALs */
56 #define S_PINGER 0x00001000
57 #define S_FILTER 0x00002000
58 #define S_PTLBD 0x00004000
59 #define S_ECHO 0x00008000
60 #define S_LDLM 0x00010000
61 #define S_LOV 0x00020000
62 #define S_PTLROUTER 0x00040000
63 #define S_COBD 0x00080000
64 #define S_SM 0x00100000
65 #define S_ASOBD 0x00200000
66 #define S_CONFOBD 0x00400000
67 #define S_LMV 0x00800000
68 #define S_CMOBD 0x01000000
69 /* If you change these values, please keep these files up to date...
70 * portals/utils/debug.c
74 /* Debugging masks (32 bits, non-overlapping) */
75 #define D_TRACE 0x00000001 /* ENTRY/EXIT markers */
76 #define D_INODE 0x00000002
77 #define D_SUPER 0x00000004
78 #define D_EXT2 0x00000008 /* anything from ext2_debug */
79 #define D_MALLOC 0x00000010 /* print malloc, free information */
80 #define D_CACHE 0x00000020 /* cache-related items */
81 #define D_INFO 0x00000040 /* general information */
82 #define D_IOCTL 0x00000080 /* ioctl related information */
83 #define D_BLOCKS 0x00000100 /* ext2 block allocation */
84 #define D_NET 0x00000200 /* network communications */
85 #define D_WARNING 0x00000400 /* CWARN(...) == CDEBUG (D_WARNING, ...) */
86 #define D_BUFFS 0x00000800
87 #define D_OTHER 0x00001000
88 #define D_DENTRY 0x00002000
89 #define D_PORTALS 0x00004000 /* ENTRY/EXIT markers */
90 #define D_PAGE 0x00008000 /* bulk page handling */
91 #define D_DLMTRACE 0x00010000
92 #define D_ERROR 0x00020000 /* CERROR(...) == CDEBUG (D_ERROR, ...) */
93 #define D_EMERG 0x00040000 /* CEMERG(...) == CDEBUG (D_EMERG, ...) */
94 #define D_HA 0x00080000 /* recovery and failover */
95 #define D_RPCTRACE 0x00100000 /* for distributed debugging */
96 #define D_VFSTRACE 0x00200000
97 #define D_READA 0x00400000 /* read-ahead */
98 #define D_MMAP 0x00800000
99 #define D_CONFIG 0x01000000
100 #define D_CONSOLE 0x02000000
101 /* If you change these values, please keep these files up to date...
102 * portals/utils/debug.c
106 #ifndef DEBUG_SUBSYSTEM
107 # define DEBUG_SUBSYSTEM S_UNDEFINED
111 #define CDEBUG(mask, format, a...) \
113 CHECK_STACK(CDEBUG_STACK); \
114 if (((mask) & (D_ERROR | D_EMERG | D_WARNING | D_CONSOLE)) || \
115 (portal_debug & (mask) && \
116 portal_subsystem_debug & DEBUG_SUBSYSTEM)) \
117 portals_debug_msg(DEBUG_SUBSYSTEM, mask, \
118 __FILE__, __FUNCTION__, __LINE__, \
119 CDEBUG_STACK, format, ## a); \
122 #define CDEBUG_MAX_LIMIT 600
123 #define CDEBUG_LIMIT(cdebug_mask, cdebug_format, a...) \
125 static cfs_time_t cdebug_next = 0; \
126 static int cdebug_count = 0; \
127 static cfs_duration_t cdebug_delay = CFS_MIN_DELAY; \
129 CHECK_STACK(CDEBUG_STACK); \
130 if (cfs_time_after(cfs_time_current(), cdebug_next)) { \
131 portals_debug_msg(DEBUG_SUBSYSTEM, cdebug_mask, __FILE__, \
132 __FUNCTION__, __LINE__, CDEBUG_STACK, \
133 cdebug_format, ## a); \
134 if (cdebug_count) { \
135 portals_debug_msg(DEBUG_SUBSYSTEM, cdebug_mask, \
136 __FILE__, __FUNCTION__, __LINE__, \
137 0, "skipped %d similar messages\n", \
141 if (cfs_time_after(cfs_time_current(), \
143 cfs_time_seconds(CDEBUG_MAX_LIMIT+10))) \
144 cdebug_delay = cdebug_delay > (8 * CFS_MIN_DELAY)? \
145 cdebug_delay/8 : CFS_MIN_DELAY; \
147 cdebug_delay = cdebug_delay*2 >= cfs_time_seconds(CDEBUG_MAX_LIMIT)?\
148 cfs_time_seconds(CDEBUG_MAX_LIMIT) : \
150 cdebug_next = cfs_time_current() + cdebug_delay; \
152 portals_debug_msg(DEBUG_SUBSYSTEM, \
153 portal_debug & ~(D_EMERG|D_ERROR|D_WARNING),\
154 __FILE__, __FUNCTION__, __LINE__, \
155 CDEBUG_STACK, cdebug_format, ## a); \
160 #define CWARN(format, a...) CDEBUG_LIMIT(D_WARNING, format, ## a)
161 #define CERROR(format, a...) CDEBUG_LIMIT(D_ERROR, format, ## a)
162 #define CEMERG(format, a...) CDEBUG(D_EMERG, format, ## a)
164 #define LCONSOLE(mask, format, a...) CDEBUG(D_CONSOLE | (mask), format, ## a)
165 #define LCONSOLE_INFO(format, a...) CDEBUG_LIMIT(D_CONSOLE, format, ## a)
166 #define LCONSOLE_WARN(format, a...) CDEBUG_LIMIT(D_CONSOLE | D_WARNING, format, ## a)
167 #define LCONSOLE_ERROR(format, a...) CDEBUG_LIMIT(D_CONSOLE | D_ERROR, format, ## a)
168 #define LCONSOLE_EMERG(format, a...) CDEBUG(D_CONSOLE | D_EMERG, format, ## a)
170 #define GOTO(label, rc) \
172 long GOTO__ret = (long)(rc); \
173 CDEBUG(D_TRACE,"Process leaving via %s (rc=%lu : %ld : %lx)\n", \
174 #label, (unsigned long)GOTO__ret, (signed long)GOTO__ret,\
175 (signed long)GOTO__ret); \
179 #define CDEBUG_ENTRY_EXIT (0)
181 #ifdef CDEBUG_ENTRY_EXIT
184 * if rc == NULL, we need to code as RETURN((void *)NULL), otherwise
185 * there will be a warning in osx.
189 typeof(rc) RETURN__ret = (rc); \
190 CDEBUG(D_TRACE, "Process leaving (rc=%lu : %ld : %lx)\n", \
191 (long)RETURN__ret, (long)RETURN__ret, (long)RETURN__ret);\
193 return RETURN__ret; \
199 CDEBUG(D_TRACE, "Process entered\n"); \
204 CDEBUG(D_TRACE, "Process leaving\n"); \
209 #define RETURN(rc) return (rc)
216 #define CDEBUG(mask, format, a...) do { } while (0)
217 #define CWARN(format, a...) printk(KERN_WARNING format, ## a)
218 #define CERROR(format, a...) printk(KERN_ERR format, ## a)
219 #define CEMERG(format, a...) printk(KERN_EMERG format, ## a)
220 #define GOTO(label, rc) do { (void)(rc); goto label; } while (0)
221 #define RETURN(rc) return (rc)
222 #define ENTRY do { } while (0)
223 #define EXIT do { } while (0)
226 #define LUSTRE_SRV_PTL_PID LUSTRE_PTL_PID
228 #define PORTALS_CFG_VERSION 0x00010001;
248 __u32 pcfg_plen1; /* buffers in userspace */
250 __u32 pcfg_plen2; /* buffers in userspace */
254 #define PCFG_INIT(pcfg, cmd) \
256 memset(&pcfg, 0, sizeof(pcfg)); \
257 pcfg.pcfg_version = PORTALS_CFG_VERSION; \
258 pcfg.pcfg_command = (cmd); \
262 typedef int (nal_cmd_handler_fn)(struct portals_cfg *, void *);
263 int libcfs_nal_cmd_register(int nal, nal_cmd_handler_fn *handler, void *arg);
264 int libcfs_nal_cmd(struct portals_cfg *pcfg);
265 void libcfs_nal_cmd_unregister(int nal);
267 struct portal_ioctl_data {
291 __u32 ioc_plen1; /* buffers in userspace */
293 __u32 ioc_plen2; /* buffers in userspace */
302 #include <libcfs/list.h>
304 struct libcfs_ioctl_handler {
305 struct list_head item;
306 int (*handle_ioctl)(struct portal_ioctl_data *data,
307 unsigned int cmd, unsigned long args);
310 #define DECLARE_IOCTL_HANDLER(ident, func) \
311 struct libcfs_ioctl_handler ident = { \
312 .item = CFS_LIST_HEAD_INIT(ident.item), \
313 .handle_ioctl = func \
316 int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
317 int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
319 /* libcfs watchdogs */
322 /* Just use the default handler (dumplog) */
323 #define LC_WATCHDOG_DEFAULT_CB NULL
325 /* Add a watchdog which fires after "time" milliseconds of delay. You have to
326 * touch it once to enable it. */
327 struct lc_watchdog *lc_watchdog_add(int time,
328 void (*cb)(struct lc_watchdog *,
329 struct task_struct *,
333 /* Enables a watchdog and resets its timer. */
334 void lc_watchdog_touch(struct lc_watchdog *lcw);
336 /* Disable a watchdog; touch it to restart it. */
337 void lc_watchdog_disable(struct lc_watchdog *lcw);
339 /* Clean up the watchdog */
340 void lc_watchdog_delete(struct lc_watchdog *lcw);
342 /* Dump a debug log */
343 void lc_watchdog_dumplog(struct lc_watchdog *lcw,
344 struct task_struct *tsk,
351 * libcfs pseudo device operations
353 * struct cfs_psdev_t and
354 * cfs_psdev_register() and
355 * cfs_psdev_deregister() are declared in
356 * libcfs/<os>/cfs_prim.h
358 * It's just draft now.
361 struct cfs_psdev_file {
364 unsigned long reserved1;
365 unsigned long reserved2;
368 struct cfs_psdev_ops {
369 int (*p_open)(unsigned long, void *);
370 int (*p_close)(unsigned long, void *);
371 int (*p_read)(struct cfs_psdev_file *, char *, unsigned long);
372 int (*p_write)(struct cfs_psdev_file *, char *, unsigned long);
373 int (*p_ioctl)(struct cfs_psdev_file *, unsigned long, void *);
377 * generic time manipulation functions.
380 static inline int cfs_time_after(cfs_time_t t1, cfs_time_t t2)
382 return cfs_time_before(t2, t1);
385 static inline int cfs_time_aftereq(cfs_time_t t1, cfs_time_t t2)
387 return cfs_time_beforeq(t2, t1);
391 * return seconds since UNIX epoch
393 static inline time_t cfs_unix_seconds(void)
397 cfs_fs_time_current(&t);
398 return cfs_fs_time_sec(&t);
401 #define CFS_RATELIMIT(seconds) \
404 * XXX nikita: non-portable initializer \
406 static time_t __next_message = 0; \
409 if (cfs_time_after(cfs_time_current(), __next_message)) \
412 __next_message = cfs_time_shift(seconds); \
418 extern void portals_debug_msg(int subsys, int mask, char *file, const char *fn,
419 const int line, unsigned long stack,
421 __attribute__ ((format (printf, 7, 8)));
423 static inline void cfs_slow_warning(cfs_time_t now, int seconds, char *msg)
425 if (cfs_time_after(cfs_time_current(),
426 cfs_time_add(now, cfs_time_seconds(15))))
427 CERROR("slow %s %lu sec\n", msg,
428 cfs_duration_sec(cfs_time_sub(cfs_time_current(), now)));
432 * helper function similar to do_gettimeofday() of Linux kernel
434 static inline void cfs_fs_timeval(struct timeval *tv)
438 cfs_fs_time_current(&time);
439 cfs_fs_time_usec(&time, tv);
443 * return valid time-out based on user supplied one. Currently we only check
444 * that time-out is not shorted than allowed.
446 static inline cfs_duration_t cfs_timeout_cap(cfs_duration_t timeout)
448 if (timeout < cfs_time_minimal_timeout())
449 timeout = cfs_time_minimal_timeout();
454 * Portable memory allocator API (draft)
456 enum cfs_alloc_flags {
457 /* allocation is not allowed to block */
458 CFS_ALLOC_ATOMIC = (1 << 0),
459 /* allocation is allowed to block */
460 CFS_ALLOC_WAIT = (1 << 1),
461 /* allocation should return zeroed memory */
462 CFS_ALLOC_ZERO = (1 << 2),
463 /* allocation is allowed to call file-system code to free/clean
465 CFS_ALLOC_FS = (1 << 3),
466 /* allocation is allowed to do io to free/clean memory */
467 CFS_ALLOC_IO = (1 << 4),
468 /* standard allocator flag combination */
469 CFS_ALLOC_STD = CFS_ALLOC_FS | CFS_ALLOC_IO,
470 CFS_ALLOC_USER = CFS_ALLOC_WAIT | CFS_ALLOC_FS | CFS_ALLOC_IO,
473 #define CFS_SLAB_ATOMIC CFS_ALLOC_ATOMIC
474 #define CFS_SLAB_WAIT CFS_ALLOC_WAIT
475 #define CFS_SLAB_ZERO CFS_ALLOC_ZERO
476 #define CFS_SLAB_FS CFS_ALLOC_FS
477 #define CFS_SLAB_IO CFS_ALLOC_IO
478 #define CFS_SLAB_STD CFS_ALLOC_STD
479 #define CFS_SLAB_USER CFS_ALLOC_USER
481 /* flags for cfs_page_alloc() in addition to enum cfs_alloc_flags */
482 enum cfs_page_alloc_flags {
483 /* allow to return page beyond KVM. It has to be mapped into KVM by
485 CFS_ALLOC_HIGH = (1 << 5),
486 CFS_ALLOC_HIGHUSER = CFS_ALLOC_WAIT | CFS_ALLOC_FS | CFS_ALLOC_IO | CFS_ALLOC_HIGH,
492 #endif /* _LIBCFS_H */