| kern_clocksource.c (247454) | kern_clocksource.c (247463) |
|---|---|
| 1/*- 2 * Copyright (c) 2010-2012 Alexander Motin <mav@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2010-2012 Alexander Motin <mav@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: head/sys/kern/kern_clocksource.c 247454 2013-02-28 10:46:54Z davide $"); | 28__FBSDID("$FreeBSD: head/sys/kern/kern_clocksource.c 247463 2013-02-28 13:46:03Z mav $"); |
| 29 30/* 31 * Common routines to manage event timers hardware. 32 */ 33 34#include "opt_device_polling.h" 35#include "opt_kdtrace.h" 36 --- 111 unchanged lines hidden (view full) --- 148{ \ 149 (bt)->sec = 0; \ 150 (bt)->frac = ((uint64_t)0x8000000000000000 / (freq)) << 1; \ 151} 152#define BT2FREQ(bt) \ 153 (((uint64_t)0x8000000000000000 + ((bt)->frac >> 2)) / \ 154 ((bt)->frac >> 1)) 155 | 29 30/* 31 * Common routines to manage event timers hardware. 32 */ 33 34#include "opt_device_polling.h" 35#include "opt_kdtrace.h" 36 --- 111 unchanged lines hidden (view full) --- 148{ \ 149 (bt)->sec = 0; \ 150 (bt)->frac = ((uint64_t)0x8000000000000000 / (freq)) << 1; \ 151} 152#define BT2FREQ(bt) \ 153 (((uint64_t)0x8000000000000000 + ((bt)->frac >> 2)) / \ 154 ((bt)->frac >> 1)) 155 |
| 156#define SBT2FREQ(sbt) ((SBT_1S + ((sbt) >> 1)) / (sbt)) 157 |
|
| 156/* 157 * Timer broadcast IPI handler. 158 */ 159int 160hardclockintr(void) 161{ 162 struct bintime now; 163 struct pcpu_state *state; --- 273 unchanged lines hidden (view full) --- 437 new.frac = timerperiod.frac - tmp; 438 if (new.frac < tmp) /* Left less then passed. */ 439 bintime_addx(&new, timerperiod.frac); 440 CTR5(KTR_SPARE2, "load p at %d: now %d.%08x first in %d.%08x", 441 curcpu, now->sec, (u_int)(now->frac >> 32), 442 new.sec, (u_int)(new.frac >> 32)); 443 *next = new; 444 bintime_add(next, now); | 158/* 159 * Timer broadcast IPI handler. 160 */ 161int 162hardclockintr(void) 163{ 164 struct bintime now; 165 struct pcpu_state *state; --- 273 unchanged lines hidden (view full) --- 439 new.frac = timerperiod.frac - tmp; 440 if (new.frac < tmp) /* Left less then passed. */ 441 bintime_addx(&new, timerperiod.frac); 442 CTR5(KTR_SPARE2, "load p at %d: now %d.%08x first in %d.%08x", 443 curcpu, now->sec, (u_int)(now->frac >> 32), 444 new.sec, (u_int)(new.frac >> 32)); 445 *next = new; 446 bintime_add(next, now); |
| 445 et_start(timer, &new, &timerperiod); | 447 et_start(timer, bttosbt(new), bttosbt(timerperiod)); |
| 446 } 447 } else { 448 getnextevent(&new); 449 eq = bintime_cmp(&new, next, ==); 450 CTR5(KTR_SPARE2, "load at %d: next %d.%08x%08x eq %d", 451 curcpu, new.sec, (u_int)(new.frac >> 32), 452 (u_int)(new.frac & 0xffffffff), 453 eq); 454 if (!eq) { 455 *next = new; 456 bintime_sub(&new, now); | 448 } 449 } else { 450 getnextevent(&new); 451 eq = bintime_cmp(&new, next, ==); 452 CTR5(KTR_SPARE2, "load at %d: next %d.%08x%08x eq %d", 453 curcpu, new.sec, (u_int)(new.frac >> 32), 454 (u_int)(new.frac & 0xffffffff), 455 eq); 456 if (!eq) { 457 *next = new; 458 bintime_sub(&new, now); |
| 457 et_start(timer, &new, NULL); | 459 et_start(timer, bttosbt(new), 0); |
| 458 } 459 } 460} 461 462/* 463 * Prepare event timer parameters after configuration changes. 464 */ 465static void --- 132 unchanged lines hidden (view full) --- 598 uint64_t div; 599 600 if (et->et_frequency != 0) { 601 div = lmax((et->et_frequency + freq / 2) / freq, 1); 602 if (et->et_flags & ET_FLAGS_POW2DIV) 603 div = 1 << (flsl(div + div / 2) - 1); 604 freq = (et->et_frequency + div / 2) / div; 605 } | 460 } 461 } 462} 463 464/* 465 * Prepare event timer parameters after configuration changes. 466 */ 467static void --- 132 unchanged lines hidden (view full) --- 600 uint64_t div; 601 602 if (et->et_frequency != 0) { 603 div = lmax((et->et_frequency + freq / 2) / freq, 1); 604 if (et->et_flags & ET_FLAGS_POW2DIV) 605 div = 1 << (flsl(div + div / 2) - 1); 606 freq = (et->et_frequency + div / 2) / div; 607 } |
| 606 if (et->et_min_period.sec > 0) | 608 if (et->et_min_period > SBT_1S) |
| 607 panic("Event timer \"%s\" doesn't support sub-second periods!", 608 et->et_name); | 609 panic("Event timer \"%s\" doesn't support sub-second periods!", 610 et->et_name); |
| 609 else if (et->et_min_period.frac != 0) 610 freq = min(freq, BT2FREQ(&et->et_min_period)); 611 if (et->et_max_period.sec == 0 && et->et_max_period.frac != 0) 612 freq = max(freq, BT2FREQ(&et->et_max_period)); | 611 else if (et->et_min_period != 0) 612 freq = min(freq, SBT2FREQ(et->et_min_period)); 613 if (et->et_max_period < SBT_1S && et->et_max_period != 0) 614 freq = max(freq, SBT2FREQ(et->et_max_period)); |
| 613 return (freq); 614} 615 616/* 617 * Configure and start event timers (BSP part). 618 */ 619void 620cpu_initclocks_bsp(void) --- 359 unchanged lines hidden --- | 615 return (freq); 616} 617 618/* 619 * Configure and start event timers (BSP part). 620 */ 621void 622cpu_initclocks_bsp(void) --- 359 unchanged lines hidden --- |