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[209.132.180.67]) by mx.google.com with ESMTP id i61-v6si1280220plb.138.2018.07.17.10.10.26; Tue, 17 Jul 2018 10:10:41 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linux-foundation.org header.s=google header.b=IxCKzGuj; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730460AbeGQRnQ (ORCPT + 99 others); Tue, 17 Jul 2018 13:43:16 -0400 Received: from mail-it0-f54.google.com ([209.85.214.54]:38078 "EHLO mail-it0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729748AbeGQRnQ (ORCPT ); Tue, 17 Jul 2018 13:43:16 -0400 Received: by mail-it0-f54.google.com with SMTP id v71-v6so175847itb.3; Tue, 17 Jul 2018 10:09:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=nk68BKGLW6HORrwdpPvfI+NaBh2nimNlB1HeZ0XGSjs=; b=IxCKzGujbcTHCjcrZbjlbs6QGlMkuyrVZ3rAPitnrMH+JJIhlZTcH9eHgAazUt11l1 lXx2LsYitWdwyjQYnCCD9NXVivdXDf33v9OywDZvogciLNQJz1rUuGW0YVGB575/ifMM YBJc2+JV+d6qisPB9v5Wz0ANU1zczkXxDXhbI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=nk68BKGLW6HORrwdpPvfI+NaBh2nimNlB1HeZ0XGSjs=; b=jE9aHk5twtrXGykMa3sVwoRHqYJl0f+u84VoPAzJRGTAcdl5+Twqtf2Ze/A7TrCD4X G7nvEroJOHMChK5HrUo9m9cfxhOU3jZzHnrowONd/UHKJeqT6hjsK5elDPLDXVKNEgQy qheH4VayRNuexmsgcN6Hzg1igCQRVyyu4PDHU+h+tEnlqkMPZIH/qG8eOUazpHya5Szt Em0gMiH+DulNOVElN0B9N7pD034dS4ONR9hM9MZQMa9JHWuuG91AGxjkCtU0pGhHgvyj haKg2JkWP6nVEZwUPPcjpjmeHDIAUZqv11fIaDjVd+zv+kfHC9bA3TiUSY9o2k6UGoeT ofeg== X-Gm-Message-State: AOUpUlHEAoOrwM+ceiuLEOttntZ2Lje5J4XeT96is4D6x12oaz/LOM6W GpGlR9qyFabz2joAxqKFTWXoQeD+5+MU5SSz7+k= X-Received: by 2002:a24:d0d7:: with SMTP id m206-v6mr2258742itg.1.1531847380008; Tue, 17 Jul 2018 10:09:40 -0700 (PDT) MIME-Version: 1.0 References: <1d3d0fe3-bc02-7720-15ac-6bc06e00067c@marvell.com> In-Reply-To: <1d3d0fe3-bc02-7720-15ac-6bc06e00067c@marvell.com> From: Linus Torvalds Date: Tue, 17 Jul 2018 10:09:28 -0700 Message-ID: Subject: Re: dvb usb issues since kernel 4.9 To: hannah@marvell.com Cc: Jonathan Corbet , David Miller , Eric Dumazet , Greg Kroah-Hartman , Josef Griebichler , Hannes Frederic Sowa , Jesper Dangaard Brouer , Linux Kernel Mailing List , Linux Media Mailing List , USB list , Mauro Carvalho Chehab , Ingo Molnar , Network Development , Paolo Abeni , Peter Zijlstra , Rik van Riel , Alan Stern , dma , vkoul@kernel.org, Dan Williams , nadavh@marvell.com, thomas.petazzoni@bootlin.com, omrii@marvell.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 17, 2018 at 4:58 AM Hanna Hawa wrote: > > After some debug/bisect/diff, found that patch "softirq: Let ksoftirqd > do its job" is problematic patch. Ok, this thread died down without any resolution. >- Using v4.14.0 (including softirq patch) and the additional fix > proposed by Linus - no timeout issue. Are you talking about the patch that made HI_SOFTIRQ and TASKLET_SOFTIRQ special, and had this: #define SOFTIRQ_NOW_MASK ((1 << HI_SOFTIRQ) | (1 << TASKLET_SOFTIRQ)) in it? I think I'll just commit the damn thing. It's hacky, but it's simple, and it never got applied because we had smarter suggestions. But the smarter suggestions never ended up being applied either, so.. Linus