s390/kernel/perf_cpum_sf.c

82 	unsigned long alert_mark;  /* index of SDB of alert request position */
440 	 *	 Control indicator to trigger a measurement-alert to harvest
442 	 *	 measurement alert interrupt fires quick enough to handle
445 	 *	 Currently there is no need for setup alert request on every
1417  * the point of alert indicator. And ignore the SDBs which are not
1421  * 2. Remove alert indicator in the buffer.
1442 	/* Remove alert indicators in the buffer */
1479 			    "%s: range %ld head %ld alert %ld empty %ld\n",
1495 	/* Set alert indicator */
1507 	debug_sprintf_event(sfdbg, 6, "%s: head %ld alert %ld empty %ld "
1517  * Set alert indicator on SDB at index @alert_index while sampler is running.
1555  * Set alert indicator on the SDB at index of aux->alert_mark. If this SDB is
1557  * If yes, that means new data is already there before we can set an alert
1558  * indicator. Caller should try to set alert indicator to some position behind.
1562  * (clear full indicator and alert indicator) for new data.
1569  * Return true if alert indicator is set successfully and false if not.
1579 	debug_sprintf_event(sfdbg, 6, "%s: range %ld head %ld alert %ld "
1585 		 * Just set alert indicator. Should check race with hardware
1592 		 * Set alert indicator on empty SDB. Should check race
1599 	 * Scan the SDBs to clear full and alert indicator used previously.
1600 	 * Start scanning from one SDB behind empty_mark. If the new alert
1633  * Measurement alert handler for diagnostic mode sampling.
1650 	debug_sprintf_event(sfdbg, 6, "%s: #alert %ld\n", __func__,
1690 			debug_sprintf_event(sfdbg, 6, "%s: head %ld alert %ld "
1698 		debug_sprintf_event(sfdbg, 6, "%s: head %ld alert %ld "
2088 				    unsigned int alert, unsigned long unused)
2092 	if (!(alert & CPU_MF_INT_SF_MASK))
2102 	/* The processing below must take care of multiple alert events that
2105 	/* Program alert request */
2106 	if (alert & CPU_MF_INT_SF_PRA) {
2117 	if (alert != CPU_MF_INT_SF_PRA)
2118 		debug_sprintf_event(sfdbg, 6, "%s: alert %#x\n", __func__,
2119 				    alert);
2122 	if (alert & CPU_MF_INT_SF_SACA)
2126 	if (alert & CPU_MF_INT_SF_LSDA) {
2133 	if (alert & (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE)) {
2134 		pr_err("A sampling buffer entry is incorrect (alert=0x%x)\n",
2135 		       alert);