AcpiExecSMPFunction

Execute a subprogram on all CPUs simultaneously.

ACPI_STATUS  AcpiExecSMPFunction (ACPIRUNATALLCPU SubProgram, UINT32 CPUMask, UINT32 Flags, void *Context)

Parameters

SubProgram

Address subprogram, which called in each CPU according with CPUMask, must declare as ACPI_STATUS APIENTRY SubProgram(void *Context)

CPUMask

CPUs for execute, low word is bit field, where bit number is number of CPU for execute, 0xffffffff mean "all CPU"

Flags

Flag, can be:

SMPEXEC_IPITIME

run from IPI (interrupt time) , stack is NOT OS/2 stack

SMPEXEC_TASKTIME

run from PSD_SET_PROC_STATE, PSD stack, kernel time

SMPEXEC_WBINDVD

Flush cache at all CPU, parameter SubProgram ignore with this.

SMPEXEC_SYNC

synchronize CPU before run (now tested with SMPEXEC_TASKTIME )

Context

Context which passed as parameter to SubProgram

Note

In Uni kernel call imeditialy w/o any checking CPU number. Running in kernel time.

Links

• ACPI Toolkit Web Site