| hwpmc_amd.c (149527) | hwpmc_amd.c (150050) |
|---|---|
| 1/*- 2 * Copyright (c) 2003-2005 Joseph Koshy 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 --- 12 unchanged lines hidden (view full) --- 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2003-2005 Joseph Koshy 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 --- 12 unchanged lines hidden (view full) --- 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28#include <sys/cdefs.h> |
| 29__FBSDID("$FreeBSD: head/sys/dev/hwpmc/hwpmc_amd.c 149527 2005-08-27 16:07:12Z jkoshy $"); | 29__FBSDID("$FreeBSD: head/sys/dev/hwpmc/hwpmc_amd.c 150050 2005-09-12 15:55:44Z jkoshy $"); |
| 30 31/* Support for the AMD K7 and later processors */ 32 33#include <sys/param.h> 34#include <sys/lock.h> 35#include <sys/malloc.h> 36#include <sys/mutex.h> 37#include <sys/pmc.h> --- 650 unchanged lines hidden (view full) --- 688 689 /* 690 * look for all PMCs that have interrupted: 691 * - skip over the TSC [PMC#0] 692 * - look for a running, sampling PMC which has overflowed 693 * and which has a valid 'struct pmc' association 694 * 695 * If found, we call a helper to process the interrupt. | 30 31/* Support for the AMD K7 and later processors */ 32 33#include <sys/param.h> 34#include <sys/lock.h> 35#include <sys/malloc.h> 36#include <sys/mutex.h> 37#include <sys/pmc.h> --- 650 unchanged lines hidden (view full) --- 688 689 /* 690 * look for all PMCs that have interrupted: 691 * - skip over the TSC [PMC#0] 692 * - look for a running, sampling PMC which has overflowed 693 * and which has a valid 'struct pmc' association 694 * 695 * If found, we call a helper to process the interrupt. |
| 696 * 697 * If multiple PMCs interrupt at the same time, the AMD64 698 * processor appears to deliver as many NMIs as there are 699 * outstanding PMC interrupts. Thus we need to only process 700 * one interrupt at a time. |
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| 696 */ 697 | 701 */ 702 |
| 698 for (i = 0; i < AMD_NPMCS-1; i++) { | 703 for (i = 0; retval == 0 && i < AMD_NPMCS-1; i++) { |
| 699 700 ri = i + 1; /* row index; TSC is at ri == 0 */ 701 702 if (!AMD_PMC_HAS_OVERFLOWED(i)) 703 continue; 704 705 phw = pc->pc_hwpmcs[ri]; 706 707 KASSERT(phw != NULL, ("[amd,%d] null PHW pointer", __LINE__)); 708 709 if ((pm = phw->phw_pmc) == NULL || 710 pm->pm_state != PMC_STATE_RUNNING || 711 !PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm))) { 712 continue; 713 } 714 | 704 705 ri = i + 1; /* row index; TSC is at ri == 0 */ 706 707 if (!AMD_PMC_HAS_OVERFLOWED(i)) 708 continue; 709 710 phw = pc->pc_hwpmcs[ri]; 711 712 KASSERT(phw != NULL, ("[amd,%d] null PHW pointer", __LINE__)); 713 714 if ((pm = phw->phw_pmc) == NULL || 715 pm->pm_state != PMC_STATE_RUNNING || 716 !PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm))) { 717 continue; 718 } 719 |
| 720 retval = 1; /* found an interrupting PMC */ 721 |
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| 715 /* stop the PMC, reload count */ 716 evsel = AMD_PMC_EVSEL_0 + i; 717 perfctr = AMD_PMC_PERFCTR_0 + i; 718 v = pm->pm_sc.pm_reloadcount; 719 config = rdmsr(evsel); 720 721 KASSERT((config & ~AMD_PMC_ENABLE) == 722 (pm->pm_md.pm_amd.pm_amd_evsel & ~AMD_PMC_ENABLE), 723 ("[amd,%d] config mismatch reg=0x%x pm=0x%x", __LINE__, 724 config, pm->pm_md.pm_amd.pm_amd_evsel)); 725 726 wrmsr(evsel, config & ~AMD_PMC_ENABLE); 727 wrmsr(perfctr, AMD_RELOAD_COUNT_TO_PERFCTR_VALUE(v)); 728 | 722 /* stop the PMC, reload count */ 723 evsel = AMD_PMC_EVSEL_0 + i; 724 perfctr = AMD_PMC_PERFCTR_0 + i; 725 v = pm->pm_sc.pm_reloadcount; 726 config = rdmsr(evsel); 727 728 KASSERT((config & ~AMD_PMC_ENABLE) == 729 (pm->pm_md.pm_amd.pm_amd_evsel & ~AMD_PMC_ENABLE), 730 ("[amd,%d] config mismatch reg=0x%x pm=0x%x", __LINE__, 731 config, pm->pm_md.pm_amd.pm_amd_evsel)); 732 733 wrmsr(evsel, config & ~AMD_PMC_ENABLE); 734 wrmsr(perfctr, AMD_RELOAD_COUNT_TO_PERFCTR_VALUE(v)); 735 |
| 729 /* restart if there was no error during logging */ | 736 /* restart the counter if there was no error during logging */ |
| 730 error = pmc_process_interrupt(cpu, pm, eip, usermode); 731 if (error == 0) 732 wrmsr(evsel, config | AMD_PMC_ENABLE); | 737 error = pmc_process_interrupt(cpu, pm, eip, usermode); 738 if (error == 0) 739 wrmsr(evsel, config | AMD_PMC_ENABLE); |
| 733 734 retval = 1; /* found an interrupting PMC */ | |
| 735 } 736 737 atomic_add_int(retval ? &pmc_stats.pm_intr_processed : 738 &pmc_stats.pm_intr_ignored, 1); 739 740 return retval; 741} 742 --- 257 unchanged lines hidden --- | 740 } 741 742 atomic_add_int(retval ? &pmc_stats.pm_intr_processed : 743 &pmc_stats.pm_intr_ignored, 1); 744 745 return retval; 746} 747 --- 257 unchanged lines hidden --- |