Date: Wed, 19 Feb 2003 23:29:01 +0200 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: current@FreeBSD.ORG Subject: Re: cvs commit: src/sys/alpha/alpha busdma_machdep.c src/sys/alpha/osf1 imgact_osf1.c osf1_misc.c src/sys/cam cam_periph.c cam_sim.c cam_xpt.c src/sys/cam/scsi scsi_cd.c scsi_ch.c scsi_da.c scsi_low.c scsi_sa.c scsi_target.c src/sys/coda cnode.h ... Message-ID: <20030219212901.GA27148@gothmog.gr> In-Reply-To: <76449.1045642469@critter.freebsd.dk> References: <200302190547.h1J5ll1J064169@repoman.freebsd.org> <76449.1045642469@critter.freebsd.dk>
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On 2003-02-19 09:14, phk@phk.freebsd.dk wrote:
> The attached patch will print a backtrace if any calls to malloc
> fail to have either M_WAITOK or M_NOWAIT. [...]
> --- kern/kern_malloc.c 19 Feb 2003 05:47:25 -0000 1.116
> +++ kern/kern_malloc.c 19 Feb 2003 07:55:19 -0000
> @@ -167,11 +167,21 @@
> #endif
> register struct malloc_type *ksp = type;
>
> + indx = flags & (M_WAITOK | M_NOWAIT);
> + if (indx == M_NOWAIT) {
> + /* OK */
> + } else if (indx == M_WAITOK) {
> + /* OK */
> + } else {
Or, a simpler version:
/* Either M_NOWAIT or M_WAITOK must be set. */
if (indx != M_NOWAIT && indx != M_WAITOK) {
printf("Missing M_WAITOK flag\n");
backtrace();
flags |= M_WAITOK;
}
:=)
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