On 05/31/2016 09:07 PM, Daniel Bristot de Oliveira wrote: > This patch series implements two kernel.panic_on_* like sysctl: > > kernel.panic_on_rcu_stall: > panic() on RCU Stall detection. > > kernel.panic_on_sched_in_atomic: > panic() on schedule while atomic detection. > > These sysctls are useful to capture a vmcore when is not possible > to recompile the kernel to include the panic() call. For instance > when supporting enterprise users. > > Daniel Bristot de Oliveira (2): > rcu: sysctl: Panic on RCU Stall > sched: sysctl: Panic on scheduling while atomic > > Documentation/sysctl/kernel.txt | 25 +++++++++++++++++++++++++ > include/linux/kernel.h | 2 ++ > kernel/rcu/tree.c | 8 ++++++++ > kernel/sched/core.c | 7 +++++++ > kernel/sysctl.c | 20 ++++++++++++++++++++ > 5 files changed, 62 insertions(+)
Acked-by: Christian Borntraeger <borntrae...@de.ibm.com> for both changes. I too often had to add manual panics in a test kernel and reproduce an issue. This will allow to take a (k)dump at a point in time where the data structures might still explain what happened. As this is an opt-in nobody, this should not cause any trouble for people that do not want to take dumps. Christian
