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Date: Sun, 23 Jun 2013 19:09:31 +0530 From: "Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com> To: tglx@...utronix.de, peterz@...radead.org, tj@...nel.org, oleg@...hat.com, paulmck@...ux.vnet.ibm.com, rusty@...tcorp.com.au, mingo@...nel.org, akpm@...ux-foundation.org, namhyung@...nel.org, walken@...gle.com, vincent.guittot@...aro.org, laijs@...fujitsu.com Cc: rostedt@...dmis.org, wangyun@...ux.vnet.ibm.com, xiaoguangrong@...ux.vnet.ibm.com, sbw@....edu, fweisbec@...il.com, zhong@...ux.vnet.ibm.com, nikunj@...ux.vnet.ibm.com, srivatsa.bhat@...ux.vnet.ibm.com, linux-pm@...r.kernel.org, linux-arch@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>, "Paul E. McKenney" <paul.mckenney@...aro.org>, Akinobu Mita <akinobu.mita@...il.com>, Catalin Marinas <catalin.marinas@....com>, Michel Lespinasse <walken@...gle.com> Subject: [PATCH 07/45] CPU hotplug: Expose the new debug config option Now that we have all the pieces of the CPU hotplug debug infrastructure in place, expose the feature by growing a new Kconfig option, CONFIG_DEBUG_HOTPLUG_CPU. Cc: Andrew Morton <akpm@...ux-foundation.org> Cc: "Paul E. McKenney" <paul.mckenney@...aro.org> Cc: Akinobu Mita <akinobu.mita@...il.com> Cc: Catalin Marinas <catalin.marinas@....com> Cc: Michel Lespinasse <walken@...gle.com> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@...ux.vnet.ibm.com> --- lib/Kconfig.debug | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 566cf2b..6be1e72 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -512,6 +512,15 @@ config DEBUG_PREEMPT if kernel code uses it in a preemption-unsafe way. Also, the kernel will detect preemption count underflows. +config DEBUG_HOTPLUG_CPU + bool "Debug CPU hotplug" + depends on HOTPLUG_CPU + default n + help + If you say Y here, the kernel will check all the accesses of + cpu_online_mask from atomic contexts, and will print warnings if + the task lacks appropriate synchronization with CPU hotplug. + config DEBUG_RT_MUTEXES bool "RT Mutex debugging, deadlock detection" depends on DEBUG_KERNEL && RT_MUTEXES -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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