50  * A table contains SDB pointers (8 bytes) and one table-link entry
76  *				   1 page  for SDB-tables
80  *				  16 pages for SDB-tables
97 	unsigned long head;	   /* index of SDB of buffer head */
98 	unsigned long alert_mark;  /* index of SDB of alert request position */
99 	unsigned long empty_mark;  /* mark of SDB not marked full */
100 	unsigned long *sdb_index;  /* SDB address for fast lookup */
208 			/* Process SDB pointer */  in free_sampling_buffer()
222 	unsigned long sdb;  in alloc_sample_data_block()  local
225 	sdb = get_zeroed_page(gfp_flags);  in alloc_sample_data_block()
226 	if (!sdb)  in alloc_sample_data_block()
228 	te = trailer_entry_ptr(sdb);  in alloc_sample_data_block()
231 	/* Link SDB into the sample-data-block-table */  in alloc_sample_data_block()
232 	*sdbt = virt_to_phys((void *)sdb);  in alloc_sample_data_block()
263 	 * entry in an SDB-table.  in realloc_sampling_buffer()
280 		/* Allocate a new SDB-table if it is full. */  in realloc_sampling_buffer()
301 			/* Undo last SDBT. An SDBT with no SDB at its first  in realloc_sampling_buffer()
329  * specified number of sample-data-blocks (SDB).  For each allocation,
425 	 *	 sample-data-blocks (SDB). This is done per SDB. This  in allocate_buffers()
427 	 *	 one SDB, on very high frequency and work loads there might  in allocate_buffers()
438 	 *	 (one SDB) for every 10000 HZ frequency increment.  in allocate_buffers()
546 	 * new SDB-request cannot be satisfied immediately.  in extend_sampling_buffer()
1197 	unsigned long *sdbt, sdb;  in hw_perf_event_update()  local
1211 		sdb = (unsigned long)phys_to_virt(*sdbt);  in hw_perf_event_update()
1212 		te = trailer_entry_ptr(sdb);  in hw_perf_event_update()
1233 		hw_collect_samples(event, (unsigned long *)sdb, &event_overflow);  in hw_perf_event_update()
1301  * Get trailer entry by index of SDB.
1306 	unsigned long sdb;  in aux_sdb_trailer()  local
1309 	sdb = aux->sdb_index[index];  in aux_sdb_trailer()
1310 	return trailer_entry_ptr(sdb);  in aux_sdb_trailer()
1403  * Set alert indicator on SDB at index @alert_index while sampler is running.
1422 			 * SDB is already set by hardware.  in aux_set_alert()
1441  * Set alert indicator on the SDB at index of aux->alert_mark. If this SDB is
1475 		 * Set alert indicator on empty SDB. Should check race  in aux_reset_buffer()
1483 	 * Start scanning from one SDB behind empty_mark. If the new alert  in aux_reset_buffer()
1582 	/* Free SDBT. SDB is freed by the caller */  in aux_buffer_free()
1592 static void aux_sdb_init(unsigned long sdb)  in aux_sdb_init()  argument
1596 	te = trailer_entry_ptr(sdb);  in aux_sdb_init()
1806 	 * using the SDB-table start.  Reset TEAR_REG event hardware register  in cpumsf_pmu_add()