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Date:      Mon, 11 Nov 2002 18:21:37 -0500 (EST)
From:      Robert Watson <rwatson@FreeBSD.org>
To:        John Baldwin <jhb@FreeBSD.org>
Cc:        Perforce Change Reviews <perforce@FreeBSD.org>
Subject:   Re: PERFORCE change 20974 for review
Message-ID:  <Pine.NEB.3.96L.1021111182115.16641Q-100000@fledge.watson.org>
In-Reply-To: <200211112046.gABKkFfK092118@repoman.freebsd.org>

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Ah, great, thanks!  I'll pick this up for use with the MAC Framework with
our new condition variable code when we IFC it in from the main tree.



Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org      Network Associates Laboratories

On Mon, 11 Nov 2002, John Baldwin wrote:

> http://perforce.freebsd.org/chv.cgi?CH=20974
> 
> Change 20974 by jhb@jhb_laptop on 2002/11/11 12:45:33
> 
> 	Change consumers of WITNESS_SLEEP() to use WITNESS_WARN() instead.
> 
> Affected files ...
> 
> .. //depot/projects/smpng/sys/kern/kern_condvar.c#21 edit
> .. //depot/projects/smpng/sys/kern/kern_sig.c#49 edit
> .. //depot/projects/smpng/sys/kern/kern_synch.c#36 edit
> .. //depot/projects/smpng/sys/kern/kern_sysctl.c#25 edit
> .. //depot/projects/smpng/sys/vm/uma_core.c#21 edit
> 
> Differences ...
> 
> ==== //depot/projects/smpng/sys/kern/kern_condvar.c#21 (text+ko) ====
> 
> @@ -219,7 +219,8 @@
>  		ktrcsw(1, 0);
>  #endif
>  	CV_ASSERT(cvp, mp, td);
> -	WITNESS_SLEEP(0, &mp->mtx_object);
> +	WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, &mp->mtx_object,
> +	    "Waiting on \"%s\"", cvp->cv_description);
>  	WITNESS_SAVE(&mp->mtx_object, mp);
>  
>  	if (cold ) {
> @@ -275,7 +276,8 @@
>  		ktrcsw(1, 0);
>  #endif
>  	CV_ASSERT(cvp, mp, td);
> -	WITNESS_SLEEP(0, &mp->mtx_object);
> +	WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, &mp->mtx_object,
> +	    "Waiting on \"%s\"", cvp->cv_description);
>  	WITNESS_SAVE(&mp->mtx_object, mp);
>  
>  	if (cold || panicstr) {
> @@ -343,7 +345,8 @@
>  		ktrcsw(1, 0);
>  #endif
>  	CV_ASSERT(cvp, mp, td);
> -	WITNESS_SLEEP(0, &mp->mtx_object);
> +	WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, &mp->mtx_object,
> +	    "Waiting on \"%s\"", cvp->cv_description);
>  	WITNESS_SAVE(&mp->mtx_object, mp);
>  
>  	if (cold || panicstr) {
> @@ -421,7 +424,8 @@
>  		ktrcsw(1, 0);
>  #endif
>  	CV_ASSERT(cvp, mp, td);
> -	WITNESS_SLEEP(0, &mp->mtx_object);
> +	WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, &mp->mtx_object,
> +	    "Waiting on \"%s\"", cvp->cv_description);
>  	WITNESS_SAVE(&mp->mtx_object, mp);
>  
>  	if (cold || panicstr) {
> 
> ==== //depot/projects/smpng/sys/kern/kern_sig.c#49 (text+ko) ====
> 
> @@ -1674,7 +1674,8 @@
>  
>  	p = td->td_proc;
>  	PROC_LOCK_ASSERT(p, MA_OWNED);
> -	WITNESS_SLEEP(1, &p->p_mtx.mtx_object);
> +	WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, &p->p_mtx.mtx_object,
> +	    "Checking for signals");
>  	for (;;) {
>  		int traced = (p->p_flag & P_TRACED) || (p->p_stops & S_SIG);
>  
> 
> ==== //depot/projects/smpng/sys/kern/kern_synch.c#36 (text+ko) ====
> 
> @@ -143,7 +143,8 @@
>  	if (KTRPOINT(td, KTR_CSW))
>  		ktrcsw(1, 0);
>  #endif
> -	WITNESS_SLEEP(0, &mtx->mtx_object);
> +	WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, &mtx->mtx_object,
> +	    "Sleeping on \"%s\"", wmesg);
>  	KASSERT(timo != 0 || mtx_owned(&Giant) || mtx != NULL,
>  	    ("sleeping without a mutex"));
>  	/*
> 
> ==== //depot/projects/smpng/sys/kern/kern_sysctl.c#25 (text+ko) ====
> 
> @@ -999,7 +999,8 @@
>  	size_t i = 0;
>  
>  	if (req->lock == 1 && req->oldptr)
> -		WITNESS_SLEEP(1, NULL);
> +		WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL,
> +		    "sysctl_old_user");
>  	if (req->oldptr) {
>  		i = l;
>  		if (req->oldlen <= req->oldidx)
> 
> ==== //depot/projects/smpng/sys/vm/uma_core.c#21 (text+ko) ====
> 
> @@ -1308,7 +1308,8 @@
>  	if (!(flags & M_NOWAIT)) {
>  		KASSERT(curthread->td_intr_nesting_level == 0,
>  		   ("malloc(M_WAITOK) in interrupt context"));
> -		WITNESS_SLEEP(1, NULL);
> +		WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL,
> +		    "malloc() of \"%s\"", zone->uz_name);
>  	}
>  
>  zalloc_restart:
> 


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