critical.c

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    1 /*-
    2  * Copyright (c) 2001 Matthew Dillon.  This code is distributed under
    3  * the BSD copyright, /usr/src/COPYRIGHT.
    4  *
    5  * $FreeBSD: releng/5.1/sys/amd64/amd64/critical.c 114349 2003-05-01 01:05:25Z peter $
    6  */
    7 
    8 #include <sys/param.h>
    9 #include <sys/systm.h>
   10 #include <sys/signalvar.h>
   11 #include <sys/kernel.h>
   12 #include <sys/lock.h>
   13 #include <sys/mutex.h>
   14 #include <sys/pcpu.h>
   15 #include <sys/proc.h>
   16 #include <sys/sysctl.h>
   17 #include <sys/ucontext.h>
   18 #include <machine/clock.h>
   19 #include <machine/critical.h>
   20 
   21 /*
   22  * cpu_critical_fork_exit() - cleanup after fork
   23  */
   24 void
   25 cpu_critical_fork_exit(void)
   26 {
   27         struct thread *td;
   28 
   29         td = curthread;
   30         td->td_critnest = 1;
   31         td->td_md.md_savecrit = read_rflags() | PSL_I;
   32 }
   33 
   34 /*
   35  * cpu_thread_link() - thread linkup, initialize machine-dependant fields
   36  */
   37 void
   38 cpu_thread_link(struct thread *td)
   39 {
   40 
   41         td->td_md.md_savecrit = 0;
   42 }

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FreeBSD/Linux Kernel Cross Reference sys/amd64/amd64/critical.c

FreeBSD/Linux Kernel Cross Reference
sys/amd64/amd64/critical.c