| Message ID | 20171002155903.19511-1-linus.luessing@c0d3.blue (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Oct 2, 2017 at 5:59 PM, Linus Lüssing <linus.luessing@c0d3.blue> wrote: > So far, the stress-ng tool for instance quickly resulted in a silent > freeze of the system with no prior notice on a serial console when > running its filesystem or memory stressor classes. > > Even with a panic-on-OOM and reboot-on-panic (vm.panic_on_oom=1, > kernel.panic=10) configured, the system would neither reboot nor > would the OOM killer get any chance to otherwise do its job. > > The Amlogic reference source code uses a 2MB PHYS_OFFSET. With these 2MB > reserved via DT, stress-ng was able to run on an Odroid C1+ just fine for > several hours, the OOM killer was able to kill processes again and if > configured would successfully trigger a reboot of the system. > > Fixes: 4a69fcd3a108 ("ARM: meson: Add DTS for Odroid-C1 and Tronfy MXQ boards") > Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> > > --- > The following stress-ng command worked fine now: > $ stress-ng -v --sequential 0 -t 120s --exclude sysfs,opcode --metrics > (5 hours runtime, tested on an Odroid C1+ with an 4.14-rc1 kernel + SMP > + USB DTS patches) > --- > arch/arm/boot/dts/meson8b.dtsi | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/arch/arm/boot/dts/meson8b.dtsi b/arch/arm/boot/dts/meson8b.dtsi > index bc278da..d75a5b5 100644 > --- a/arch/arm/boot/dts/meson8b.dtsi > +++ b/arch/arm/boot/dts/meson8b.dtsi > @@ -83,6 +83,18 @@ > }; > }; > > + reserved-memory { > + #address-cells = <1>; > + #size-cells = <1>; > + ranges; > + > + /* 2 MiB reserved for Hardware ROM Firmware? */ > + hwrom@0 { > + reg = <0x0 0x200000>; > + no-map; > + }; > + }; > + > scu@c4300000 { > compatible = "arm,cortex-a5-scu"; > reg = <0xc4300000 0x100>; > -- > 2.1.4 >
Linus Lüssing <linus.luessing@c0d3.blue> writes: > So far, the stress-ng tool for instance quickly resulted in a silent > freeze of the system with no prior notice on a serial console when > running its filesystem or memory stressor classes. > > Even with a panic-on-OOM and reboot-on-panic (vm.panic_on_oom=1, > kernel.panic=10) configured, the system would neither reboot nor > would the OOM killer get any chance to otherwise do its job. > > The Amlogic reference source code uses a 2MB PHYS_OFFSET. With these 2MB > reserved via DT, stress-ng was able to run on an Odroid C1+ just fine for > several hours, the OOM killer was able to kill processes again and if > configured would successfully trigger a reboot of the system. > > Fixes: 4a69fcd3a108 ("ARM: meson: Add DTS for Odroid-C1 and Tronfy MXQ boards") > Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Applied to v4.15/dt with Martin's Tested-by, Thanks, Kevin
diff --git a/arch/arm/boot/dts/meson8b.dtsi b/arch/arm/boot/dts/meson8b.dtsi index bc278da..d75a5b5 100644 --- a/arch/arm/boot/dts/meson8b.dtsi +++ b/arch/arm/boot/dts/meson8b.dtsi @@ -83,6 +83,18 @@ }; }; + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + /* 2 MiB reserved for Hardware ROM Firmware? */ + hwrom@0 { + reg = <0x0 0x200000>; + no-map; + }; + }; + scu@c4300000 { compatible = "arm,cortex-a5-scu"; reg = <0xc4300000 0x100>;
So far, the stress-ng tool for instance quickly resulted in a silent freeze of the system with no prior notice on a serial console when running its filesystem or memory stressor classes. Even with a panic-on-OOM and reboot-on-panic (vm.panic_on_oom=1, kernel.panic=10) configured, the system would neither reboot nor would the OOM killer get any chance to otherwise do its job. The Amlogic reference source code uses a 2MB PHYS_OFFSET. With these 2MB reserved via DT, stress-ng was able to run on an Odroid C1+ just fine for several hours, the OOM killer was able to kill processes again and if configured would successfully trigger a reboot of the system. Fixes: 4a69fcd3a108 ("ARM: meson: Add DTS for Odroid-C1 and Tronfy MXQ boards") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> --- The following stress-ng command worked fine now: $ stress-ng -v --sequential 0 -t 120s --exclude sysfs,opcode --metrics (5 hours runtime, tested on an Odroid C1+ with an 4.14-rc1 kernel + SMP + USB DTS patches) --- arch/arm/boot/dts/meson8b.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+)