From: Tony Lindgren <tony@atomide.com>
To: Yegor Yefremov <yegorslists@googlemail.com>
Cc: Arnd Bergmann <arnd@arndb.de>, Ard Biesheuvel <ardb@kernel.org>,
Linux-OMAP <linux-omap@vger.kernel.org>,
linux-clk <linux-clk@vger.kernel.org>,
Stephen Boyd <sboyd@kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: am335x: 5.18.x: system stalling
Date: Thu, 26 May 2022 09:20:31 +0300 [thread overview]
Message-ID: <Yo8cLxktTytqAEV3@atomide.com> (raw)
In-Reply-To: <CAGm1_ku5EusuSJ9zhYZBRGdRUr8_NYsx3=BZQkuYtNJpq3Tn_w@mail.gmail.com>
* Yegor Yefremov <yegorslists@googlemail.com> [220526 05:45]:
> On Tue, May 24, 2022 at 4:19 PM Tony Lindgren <tony@atomide.com> wrote:
> > Maybe also try with CONFIG_MUSB_PIO_ONLY=y to see if it makes things
> > better or worse :)
>
> PIO is always the last resort :-) And now it proves it again. With
> PIO_ONLY the system doesn't stall.
OK great :) So it has something to do with drivers/dma/ti/cppi41.c, or
with drivers/usb/musb/cppi_dma.c or whatever the dma for am335x here
is. Or maybe there's something using stack for buffers being passed to
dma again that breaks with vmap stack.
Regards,
Tony
WARNING: multiple messages have this Message-ID (diff)
From: Tony Lindgren <tony@atomide.com>
To: Yegor Yefremov <yegorslists@googlemail.com>
Cc: Arnd Bergmann <arnd@arndb.de>, Ard Biesheuvel <ardb@kernel.org>,
Linux-OMAP <linux-omap@vger.kernel.org>,
linux-clk <linux-clk@vger.kernel.org>,
Stephen Boyd <sboyd@kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: am335x: 5.18.x: system stalling
Date: Thu, 26 May 2022 09:20:31 +0300 [thread overview]
Message-ID: <Yo8cLxktTytqAEV3@atomide.com> (raw)
In-Reply-To: <CAGm1_ku5EusuSJ9zhYZBRGdRUr8_NYsx3=BZQkuYtNJpq3Tn_w@mail.gmail.com>
* Yegor Yefremov <yegorslists@googlemail.com> [220526 05:45]:
> On Tue, May 24, 2022 at 4:19 PM Tony Lindgren <tony@atomide.com> wrote:
> > Maybe also try with CONFIG_MUSB_PIO_ONLY=y to see if it makes things
> > better or worse :)
>
> PIO is always the last resort :-) And now it proves it again. With
> PIO_ONLY the system doesn't stall.
OK great :) So it has something to do with drivers/dma/ti/cppi41.c, or
with drivers/usb/musb/cppi_dma.c or whatever the dma for am335x here
is. Or maybe there's something using stack for buffers being passed to
dma again that breaks with vmap stack.
Regards,
Tony
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next prev parent reply other threads:[~2022-05-26 6:20 UTC|newest]
Thread overview: 115+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-04 10:35 am335x: 5.18.x: system stalling Yegor Yefremov
2022-05-05 5:08 ` Tony Lindgren
2022-05-11 14:16 ` Yegor Yefremov
2022-05-12 5:41 ` Tony Lindgren
2022-05-12 5:41 ` Tony Lindgren
2022-05-12 8:14 ` Arnd Bergmann
2022-05-12 8:14 ` Arnd Bergmann
2022-05-12 8:42 ` Arnd Bergmann
2022-05-12 8:42 ` Arnd Bergmann
2022-05-12 10:20 ` Yegor Yefremov
2022-05-12 10:20 ` Yegor Yefremov
2022-05-19 16:52 ` Yegor Yefremov
2022-05-19 16:52 ` Yegor Yefremov
2022-05-21 19:41 ` Arnd Bergmann
2022-05-21 19:41 ` Arnd Bergmann
2022-05-24 13:38 ` Yegor Yefremov
2022-05-24 13:38 ` Yegor Yefremov
2022-05-24 14:19 ` Tony Lindgren
2022-05-24 14:19 ` Tony Lindgren
2022-05-26 5:49 ` Yegor Yefremov
2022-05-26 5:49 ` Yegor Yefremov
2022-05-26 6:20 ` Tony Lindgren [this message]
2022-05-26 6:20 ` Tony Lindgren
2022-05-26 8:19 ` Ard Biesheuvel
2022-05-26 8:19 ` Ard Biesheuvel
2022-05-26 12:37 ` Yegor Yefremov
2022-05-26 12:37 ` Yegor Yefremov
2022-05-26 14:15 ` Arnd Bergmann
2022-05-26 14:15 ` Arnd Bergmann
2022-05-27 4:44 ` Yegor Yefremov
2022-05-27 4:44 ` Yegor Yefremov
2022-05-27 6:38 ` Arnd Bergmann
2022-05-27 6:38 ` Arnd Bergmann
2022-05-27 6:50 ` Tony Lindgren
2022-05-27 6:50 ` Tony Lindgren
2022-05-27 6:57 ` Arnd Bergmann
2022-05-27 6:57 ` Arnd Bergmann
2022-05-27 8:17 ` Yegor Yefremov
2022-05-27 8:17 ` Yegor Yefremov
2022-05-27 8:38 ` Arnd Bergmann
2022-05-27 8:38 ` Arnd Bergmann
2022-05-27 9:50 ` Yegor Yefremov
2022-05-27 9:50 ` Yegor Yefremov
2022-05-27 12:53 ` Arnd Bergmann
2022-05-27 12:53 ` Arnd Bergmann
2022-05-27 13:12 ` Ard Biesheuvel
2022-05-27 13:12 ` Ard Biesheuvel
2022-05-27 14:12 ` Arnd Bergmann
2022-05-27 14:12 ` Arnd Bergmann
2022-05-28 5:48 ` Yegor Yefremov
2022-05-28 5:48 ` Yegor Yefremov
2022-05-28 7:53 ` Arnd Bergmann
2022-05-28 7:53 ` Arnd Bergmann
2022-05-28 8:29 ` Yegor Yefremov
2022-05-28 8:29 ` Yegor Yefremov
2022-05-28 9:07 ` Ard Biesheuvel
2022-05-28 9:07 ` Ard Biesheuvel
2022-05-28 13:01 ` Yegor Yefremov
2022-05-28 13:01 ` Yegor Yefremov
2022-05-28 13:13 ` Arnd Bergmann
2022-05-28 13:13 ` Arnd Bergmann
2022-05-28 19:28 ` Yegor Yefremov
2022-05-28 19:28 ` Yegor Yefremov
2022-05-30 10:16 ` Ard Biesheuvel
2022-05-30 10:16 ` Ard Biesheuvel
2022-05-30 12:09 ` Yegor Yefremov
2022-05-30 12:09 ` Yegor Yefremov
2022-05-30 13:54 ` Arnd Bergmann
2022-05-30 13:54 ` Arnd Bergmann
2022-05-30 15:14 ` Ard Biesheuvel
2022-05-30 15:14 ` Ard Biesheuvel
2022-05-31 8:36 ` Yegor Yefremov
2022-05-31 8:36 ` Yegor Yefremov
2022-05-31 14:16 ` Yegor Yefremov
2022-05-31 14:16 ` Yegor Yefremov
2022-05-31 15:22 ` Arnd Bergmann
2022-05-31 15:22 ` Arnd Bergmann
2022-06-01 7:36 ` Yegor Yefremov
2022-06-01 7:36 ` Yegor Yefremov
2022-06-01 7:59 ` Arnd Bergmann
2022-06-01 7:59 ` Arnd Bergmann
2022-06-01 8:08 ` Ard Biesheuvel
2022-06-01 8:08 ` Ard Biesheuvel
2022-06-01 9:27 ` Ard Biesheuvel
2022-06-01 9:27 ` Ard Biesheuvel
2022-06-01 10:03 ` Yegor Yefremov
2022-06-01 10:03 ` Yegor Yefremov
2022-06-01 10:06 ` Ard Biesheuvel
2022-06-01 10:06 ` Ard Biesheuvel
2022-06-01 10:46 ` Yegor Yefremov
2022-06-01 10:46 ` Yegor Yefremov
2022-06-01 10:49 ` Ard Biesheuvel
2022-06-01 10:49 ` Ard Biesheuvel
2022-06-02 10:17 ` Yegor Yefremov
2022-06-02 10:17 ` Yegor Yefremov
2022-06-02 10:37 ` Ard Biesheuvel
2022-06-02 10:37 ` Ard Biesheuvel
2022-06-02 12:27 ` Yegor Yefremov
2022-06-02 12:27 ` Yegor Yefremov
2022-06-03 8:54 ` Yegor Yefremov
2022-06-03 8:54 ` Yegor Yefremov
2022-06-03 9:32 ` Arnd Bergmann
2022-06-03 9:32 ` Arnd Bergmann
2022-06-03 19:11 ` Yegor Yefremov
2022-06-03 19:11 ` Yegor Yefremov
2022-06-03 20:46 ` Arnd Bergmann
2022-06-03 20:46 ` Arnd Bergmann
2022-06-05 14:59 ` Ard Biesheuvel
2022-06-05 14:59 ` Ard Biesheuvel
2022-06-07 8:55 ` Yegor Yefremov
2022-06-07 8:55 ` Yegor Yefremov
2022-08-12 7:35 ` Arnd Bergmann
2022-08-12 7:35 ` Arnd Bergmann
2022-05-24 14:36 ` Arnd Bergmann
2022-05-24 14:36 ` Arnd Bergmann
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