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- Handle kdb switch panics outside of mi_switch() to remove some instructions

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from the common path and make the code more clear.  Whether this has any
   impact on performance may depend on optimization levels.

Sponsored by:	Nokia
This commit is contained in:
Jeff Roberson 2008-03-10 03:16:51 +00:00
parent 73daf66f41
commit 8f93d79d05
1 changed files with 11 additions and 6 deletions
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17
sys/kern/kern_synch.c
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@ -365,6 +365,15 @@ wakeup_one(ident)
sleepq_release(ident);
}
static void
kdb_switch(void)
{
thread_unlock(curthread);
kdb_backtrace();
kdb_reenter();
panic("%s: did not reenter debugger", __func__);
}
/*
* The machine independent parts of context switching.
*/
@ -394,12 +403,8 @@ mi_switch(int flags, struct thread *newtd)
/*
* Don't perform context switches from the debugger.
*/
if (kdb_active) {
thread_unlock(td);
kdb_backtrace();
kdb_reenter();
panic("%s: did not reenter debugger", __func__);
}
if (kdb_active)
kdb_switch();
if (flags & SW_VOL)
td->td_ru.ru_nvcsw++;
else