Broadcast.c File Reference

Broadcasting functions. More...

#include "pch.h"

Functions
VOID	BroadcastEnableLbrOnAllCores ()
	Routines to enable LBR on all cores.
VOID	BroadcastDisableLbrOnAllCores ()
	Routines to disable LBR on all cores.
VOID	BroadcastFlushLbrOnAllCores ()
	Routines to flush LBR on all cores.
VOID	BroadcastFilterLbrOptionsOnAllCores (UINT64 LbrFilterOptions)
	Routines to filter LBR option on all cores.
VOID	BroadcastEnablePtOnAllCores ()
	Routines to enable PT on all cores.
VOID	BroadcastDisablePtOnAllCores ()
	Routines to disable PT on all cores.
VOID	BroadcastPausePtOnAllCores ()
	Routines to pause PT tracing on all cores.
VOID	BroadcastResumePtOnAllCores ()
	Routines to resume PT tracing on all cores.
VOID	BroadcastSizePtOnAllCores (UINT64 *Sizes)
	Routines to snapshot per-CPU PT output positions. The DPC writes its own core's byte count into Sizes[CoreId]; the caller's UINT64 array must hold at least one slot per CPU.
VOID	BroadcastDumpPtOnAllCores ()
	Routines to dump PT state on all cores.
VOID	BroadcastFlushPtOnAllCores ()
	Routines to flush PT state on all cores.
VOID	BroadcastFilterPtOnAllCores (PT_FILTER_OPTIONS *FilterOptions)
	Routines to apply a PT filter on all cores. The same Options pointer is passed to every per-core DPC; KeGenericCallDpc is synchronous so the caller's storage is valid throughout.

Detailed Description

Broadcasting functions.

Author

Sina Karvandi (sina@.nosp@m.hype.nosp@m.rdbg..nosp@m.org)

Version

0.19

Date

2026-04-19

Copyright

This project is released under the GNU Public License v3.

Function Documentation

BroadcastDisableLbrOnAllCores()

VOID BroadcastDisableLbrOnAllCores

(

)

Routines to disable LBR on all cores.

Returns

VOID

{
    //
    // Broadcast to all cores
    //
    KeGenericCallDpc(DpcRoutineDisableLbr, NULL);
}

BroadcastDisablePtOnAllCores()

VOID BroadcastDisablePtOnAllCores

(

)

Routines to disable PT on all cores.

Returns

VOID

{
    KeGenericCallDpc(DpcRoutineDisablePt, NULL);
}

BroadcastDumpPtOnAllCores()

VOID BroadcastDumpPtOnAllCores

(

)

Routines to dump PT state on all cores.

Returns

VOID

{
    KeGenericCallDpc(DpcRoutineDumpPt, NULL);
}

BroadcastEnableLbrOnAllCores()

VOID BroadcastEnableLbrOnAllCores

(

)

Routines to enable LBR on all cores.

Returns

VOID

{
    //
    // Broadcast to all cores
    //
    KeGenericCallDpc(DpcRoutineEnableLbr, NULL);
}

BroadcastEnablePtOnAllCores()

VOID BroadcastEnablePtOnAllCores

(

)

Routines to enable PT on all cores.

Returns

VOID

{
    KeGenericCallDpc(DpcRoutineEnablePt, NULL);
}

BroadcastFilterLbrOptionsOnAllCores()

VOID BroadcastFilterLbrOptionsOnAllCores

(

UINT64

LbrFilterOptions

)

Routines to filter LBR option on all cores.

Parameters

LbrFilterOptions

A bitmask of filter options to apply to the LBR branches

Returns

VOID

{
    //
    // Broadcast to all cores
    //
    KeGenericCallDpc(DpcRoutineFilterLbrOptions, (PVOID)(UINT_PTR)LbrFilterOptions);
}

BroadcastFilterPtOnAllCores()

VOID BroadcastFilterPtOnAllCores

(

PT_FILTER_OPTIONS *

FilterOptions

)

Routines to apply a PT filter on all cores. The same Options pointer is passed to every per-core DPC; KeGenericCallDpc is synchronous so the caller's storage is valid throughout.

Returns

VOID

{
    KeGenericCallDpc(DpcRoutineFilterPt, (PVOID)FilterOptions);
}

BroadcastFlushLbrOnAllCores()

VOID BroadcastFlushLbrOnAllCores

(

)

Routines to flush LBR on all cores.

Returns

VOID

{
    //
    // Broadcast to all cores
    //
    KeGenericCallDpc(DpcRoutineFlushLbr, NULL);
}

BroadcastFlushPtOnAllCores()

VOID BroadcastFlushPtOnAllCores

(

)

Routines to flush PT state on all cores.

Returns

VOID

{
    KeGenericCallDpc(DpcRoutineFlushPt, NULL);
}

BroadcastPausePtOnAllCores()

VOID BroadcastPausePtOnAllCores

(

)

Routines to pause PT tracing on all cores.

Returns

VOID

{
    KeGenericCallDpc(DpcRoutinePausePt, NULL);
}

BroadcastResumePtOnAllCores()

VOID BroadcastResumePtOnAllCores

(

)

Routines to resume PT tracing on all cores.

Returns

VOID

{
    KeGenericCallDpc(DpcRoutineResumePt, NULL);
}

BroadcastSizePtOnAllCores()

VOID BroadcastSizePtOnAllCores

(

UINT64 *

Sizes

)

Routines to snapshot per-CPU PT output positions. The DPC writes its own core's byte count into Sizes[CoreId]; the caller's UINT64 array must hold at least one slot per CPU.

Returns

VOID

{
    KeGenericCallDpc(DpcRoutineSizePt, (PVOID)Sizes);
}