drivers/hv/mshv_debugfs_counters.c

Source file repositories/reference/linux-study-clean/drivers/hv/mshv_debugfs_counters.c

File Facts

System
Linux kernel
Corpus path
drivers/hv/mshv_debugfs_counters.c
Extension
.c
Size
16227 bytes
Lines
491
Domain
Driver Families
Bucket
drivers/hv
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2026, Microsoft Corporation.
 *
 * Data for printing stats page counters via debugfs.
 *
 * Authors: Microsoft Linux virtualization team
 */

/*
 * For simplicity, this file is included directly in mshv_debugfs.c.
 * If these are ever needed elsewhere they should be compiled separately.
 * Ensure this file is not used twice by accident.
 */
#ifndef MSHV_DEBUGFS_C
#error "This file should only be included in mshv_debugfs.c"
#endif

/* HV_HYPERVISOR_COUNTER */
static char *hv_hypervisor_counters[] = {
	[1] = "HvLogicalProcessors",
	[2] = "HvPartitions",
	[3] = "HvTotalPages",
	[4] = "HvVirtualProcessors",
	[5] = "HvMonitoredNotifications",
	[6] = "HvModernStandbyEntries",
	[7] = "HvPlatformIdleTransitions",
	[8] = "HvHypervisorStartupCost",

	[10] = "HvIOSpacePages",
	[11] = "HvNonEssentialPagesForDump",
	[12] = "HvSubsumedPages",
};

/* HV_CPU_COUNTER */
static char *hv_lp_counters[] = {
	[1] = "LpGlobalTime",
	[2] = "LpTotalRunTime",
	[3] = "LpHypervisorRunTime",
	[4] = "LpHardwareInterrupts",
	[5] = "LpContextSwitches",
	[6] = "LpInterProcessorInterrupts",
	[7] = "LpSchedulerInterrupts",
	[8] = "LpTimerInterrupts",
	[9] = "LpInterProcessorInterruptsSent",
	[10] = "LpProcessorHalts",
	[11] = "LpMonitorTransitionCost",
	[12] = "LpContextSwitchTime",
	[13] = "LpC1TransitionsCount",
	[14] = "LpC1RunTime",
	[15] = "LpC2TransitionsCount",
	[16] = "LpC2RunTime",
	[17] = "LpC3TransitionsCount",
	[18] = "LpC3RunTime",
	[19] = "LpRootVpIndex",
	[20] = "LpIdleSequenceNumber",
	[21] = "LpGlobalTscCount",
	[22] = "LpActiveTscCount",
	[23] = "LpIdleAccumulation",
	[24] = "LpReferenceCycleCount0",
	[25] = "LpActualCycleCount0",
	[26] = "LpReferenceCycleCount1",
	[27] = "LpActualCycleCount1",
	[28] = "LpProximityDomainId",
	[29] = "LpPostedInterruptNotifications",
	[30] = "LpBranchPredictorFlushes",
#if IS_ENABLED(CONFIG_X86_64)
	[31] = "LpL1DataCacheFlushes",
	[32] = "LpImmediateL1DataCacheFlushes",
	[33] = "LpMbFlushes",
	[34] = "LpCounterRefreshSequenceNumber",
	[35] = "LpCounterRefreshReferenceTime",
	[36] = "LpIdleAccumulationSnapshot",
	[37] = "LpActiveTscCountSnapshot",
	[38] = "LpHwpRequestContextSwitches",
	[39] = "LpPlaceholder1",
	[40] = "LpPlaceholder2",
	[41] = "LpPlaceholder3",
	[42] = "LpPlaceholder4",
	[43] = "LpPlaceholder5",
	[44] = "LpPlaceholder6",
	[45] = "LpPlaceholder7",
	[46] = "LpPlaceholder8",
	[47] = "LpPlaceholder9",
	[48] = "LpSchLocalRunListSize",
	[49] = "LpReserveGroupId",
	[50] = "LpRunningPriority",
	[51] = "LpPerfmonInterruptCount",
#elif IS_ENABLED(CONFIG_ARM64)
	[31] = "LpCounterRefreshSequenceNumber",

Annotation

Implementation Notes