* Olof Johansson <[email protected]> [181107 09:28]: > On Wed, Nov 7, 2018 at 9:17 AM Linus Torvalds > <[email protected]> wrote: > > > > On Wed, Nov 7, 2018 at 9:10 AM Olof Johansson <[email protected]> wrote: > > > > > > ARM: SoC fixes > > > > Pulled. > > > > > I was a bit too trigger happy to enable PREEMPT on multi_v7_defconfig, > > > and it ended up regressing at least BeagleBone XM boards. > > > > Odd. Did it hit some "may_sleep()" test in a driver that is hidden by > > preempt being off? Otherwise I don't see how/why preempt should fail > > in a board-specific manner.. > > The board hangs early during boot and the usual way of collecting > early console doesn't seem to work when attempted (I haven't tried > personally). > > It's one of the major non-SMP platforms covered by tests. I'd be > surprised if it turns out to be truly _board_ specific (and rather > specific to OMAP3), but we don't have enough data yet. Chances are it > either shuffles some timing around or indeed hits a may_sleep() test > somewhere. > > (I just realized I might have missed to attribute Guillaume in the > revert patch. Sorry about that).
Looks like we're missing the stdout-path for earlycon, maybe try with the following patch? I can't find my Beagleboard-xm right now, time to clean-up a bit I guess. At least omap3-evm, logicpd-torpedo and n900 all boot with PREEMPT. Regards, Tony 8< ---------------------- >From tony Mon Sep 17 00:00:00 2001 From: Tony Lindgren <[email protected]> Date: Thu, 8 Nov 2018 07:43:28 -0800 Subject: [PATCH] ARM: dts: Add missing earlycon UART for Beagleboard We can get early boot messages if CONFIG_SERIAL_EARLYCON=y is set, and kernel commandline has debug earlycon. But we're missing the related dts entry for Beagleboard. Signed-off-by: Tony Lindgren <[email protected]> --- Note: Untested, I can't find my Beagleboard-XM right now.. --- arch/arm/boot/dts/omap3-beagle.dts | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/boot/dts/omap3-beagle.dts b/arch/arm/boot/dts/omap3-beagle.dts --- a/arch/arm/boot/dts/omap3-beagle.dts +++ b/arch/arm/boot/dts/omap3-beagle.dts @@ -24,6 +24,10 @@ reg = <0x80000000 0x10000000>; /* 256 MB */ }; + chosen { + stdout-path = &uart3; + }; + aliases { display0 = &dvi0; display1 = &tv0; -- 2.19.1
