[PATCH v10 5/5] Watchdog: ARM SBSA Generic Watchdog half timeout panic support
From: Thomas Petazzoni <hidden>
Date: 2016-02-05 13:03:08
Also in:
linux-devicetree, linux-watchdog, lkml
From: Thomas Petazzoni <hidden>
Date: 2016-02-05 13:03:08
Also in:
linux-devicetree, linux-watchdog, lkml
Hello, On Fri, 5 Feb 2016 17:51:52 +0800, Fu Wei wrote:
OK, my thought is if panic is enabled : |--------WOR-------WS0--------WOR-------WS1 |------timeout------(panic)------timeout-----reset
I'm quite certainly missing something completely obvious here, but how can you get the WS1 interrupt *after* raising a panic? Aren't all interrupts disabled and the system fully halted once you get a panic(), especially when raised from an interrupt handler? If that's the case, how can the system continue to do things, such as receiving the WS1 interrupt and resetting ? Again, I'm probably missing something obvious, but I'm interested to understand the reasoning here. Thanks! Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com