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The panic_timeout value can be set via the command line option 'panic=x', or via /proc/sys/kernel/panic, however that is not sufficient when the panic occurs before we are able to set up these values. Thus, add a CONFIG_PANIC_TIMEOUT so that we can set the desired value from the .config. The default panic_timeout value continues to be 0 - wait forever. Also adds set_arch_panic_timeout(new_timeout, arch_default_timeout), which is intended to be used by arches in arch_setup(). The idea being that the new_timeout is only set if the user hasn't changed from the arch_default_timeout. Signed-off-by: Jason Baron <jbaron@akamai.com> Cc: benh@kernel.crashing.org Cc: paulus@samba.org Cc: ralf@linux-mips.org Cc: mpe@ellerman.id.au Cc: felipe.contreras@gmail.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1a1674daec27c534df409697025ac568ebcee91e.1385418410.git.jbaron@akamai.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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