Date: Thu, 27 May 1999 12:26:12 -0700 From: Mike Smith <mike@smith.net.au> To: Dennis <dennis@etinc.com> Cc: hackers@freebsd.org Subject: Re: mbuf stuff Message-ID: <199905271926.MAA01660@dingo.cdrom.com> In-Reply-To: Your message of "Thu, 27 May 1999 11:39:11 EDT." <199905271642.MAA03346@etinc.com>
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> > We've encountered a situation where mbuf allocations inside a device > interrupt handler fails occasionally...and it always seems to happen when > rtalloc() is interrupted. Is this due to some sort of locking (rtalloc is > run at splnet())...should it perhaps be run at splimp() to avoid this problem? It sounds like your device's interrupt handler should be in the 'net' mask; you certainly shouldn't be doing anything that manipulates mbufs in a non-'net'-masked interrupt handler. > What other causes for mbuf failures might reasonably be expected? Is > allocating mbufs at interrupt time something that wasnt expected in the > original system design? The mbuf pool might be empty. -- \\ The mind's the standard \\ Mike Smith \\ of the man. \\ msmith@freebsd.org \\ -- Joseph Merrick \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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