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On Wed, 2004-09-15 at 22:36, William Lee Irwin III wrote: >> Not over a call to schedule(). In the midst of schedule(). On Wed, Sep 15, 2004 at 11:49:38PM -0400, Albert Cahalan wrote: > OK, let's look. > First, there's fork/vfork/clone. At no point does > "current" change. A process comes into existance > with a ready-made current. > Second, there's sched.c with context_switch(). > That does everything via switch_to, like so: > /* Here we just switch the register state and the stack. */ > switch_to(prev, next, prev); > No problem. Now I only need to show that switch_to() > is safe. Unfortunately, it's arch-specific code. > I'll look at a few examples... gcc has to compile more than Linux. There has to be a rule for how this works, not "gee, Linux will still work and get faster if we change this". -- wli - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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