개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

ddi_intr_hilevel(9f)

ddi_intr_hilevel(9F)           Kernel Functions           ddi_intr_hilevel(9F)



NAME
       ddi_intr_hilevel - indicate interrupt handler type

SYNOPSIS
       #include <sys/ddi.h>
       #include <sys/sunddi.h>

       int ddi_intr_hilevel(dev_info_t *dip, uint_t inumber);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI). This interface is obsolete. Use the
       new interrupt interfaces referenced  in  Intro(9F).  Refer  to  Writing
       Device Drivers in Oracle Solaris 11.4 for more information.

PARAMETERS
       dip        Pointer to dev_info structure.


       inumber    Interrupt number.


DESCRIPTION
       The  ddi_intr_hilevel()  function  returns  non-zero  if  the specified
       interrupt is a "high level" interrupt.


       High level interrupts must be handled  without  using  system  services
       that  manipulate thread or process states, because these interrupts are
       not blocked by the scheduler.


       In addition, high level interrupt handlers must take care to do a mini‐
       mum of work because they are not preemptable.


       A  typical  high level interrupt handler would put data into a circular
       buffer and schedule a soft interrupt by calling ddi_trigger_softintr().
       The  circular buffer could be protected by using a mutex that was prop‐
       erly initialized for the interrupt handler.


       The  ddi_intr_hilevel()   function   can   be   used   before   calling
       ddi_add_intr()  to  decide  which  type  of interrupt handler should be
       used. Most device drivers are designed  with  the  knowledge  that  the
       devices they support will always generate low level interrupts, however
       some devices, for example those using SBus or VME  bus  level  6  or  7
       interrupts must use this test because on some machines those interrupts
       are high level (above the scheduler level) and on other  machines  they
       are not.

RETURN VALUES
       non-zero    indicates a high-level interrupt.


CONTEXT
       These  functions can be called from useruser, interrupt, or kernel con‐
       text.

ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE VALUE _ Interface StabilityObsolete


SEE ALSO
       Intro(9F), ddi_add_intr(9F), mutex(9F)


       Writing Device Drivers in Oracle Solaris 11.4



Oracle Solaris 11.4               16 Jan 2006             ddi_intr_hilevel(9F)