linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2011-12-07	x86, NMI: Add to_cpumask() to silence compile warning	Dan Carpenter	1	-1/+1
	Gcc complains if we don't cast this to a struct cpumask pointer. arch/x86/kernel/nmi_selftest.c:93:2: warning: passing argument 1 of ‘cpumask_empty’ from incompatible pointer type [enabled by default] Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/r/20111207110612.GA3437@mwanda Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-06	x86, NMI: NMI-selftest should handle the UP case properly	Don Zickus	1	-1/+2
	If no remote cpus are online, then just quietly skip the remote IPI test for now. Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: andi@firstfloor.org Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Cc: robert.richter@amd.com Link: http://lkml.kernel.org/r/20111206180859.GR1669@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-05	x86, NMI: Add NMI IPI selftest	Don Zickus	1	-0/+179
	The previous patch modified the stop cpus path to use NMI instead of IRQ as the way to communicate to the other cpus to shutdown. There were some concerns that various machines may have problems with using an NMI IPI. This patch creates a selftest to check if NMI is working at boot. The idea is to help catch any issues before the machine panics and we learn the hard way. Loosely based on the locking-selftest.c file, this separate file runs a couple of simple tests and reports the results. The output looks like: ... Brought up 4 CPUs ---------------- \| NMI testsuite: -------------------- remote IPI: ok \| local IPI: ok \| -------------------- Good, all 2 testcases passed! \| --------------------------------- Total of 4 processors activated (21330.61 BogoMIPS). ... Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <robert.richter@amd.com> Cc: seiji.aguchi@hds.com Cc: vgoyal@redhat.com Cc: mjg@redhat.com Cc: tony.luck@intel.com Cc: gong.chen@intel.com Cc: satoru.moriya@hds.com Cc: avi@redhat.com Cc: Andi Kleen <andi@firstfloor.org> Link: http://lkml.kernel.org/r/1318533267-18880-3-git-send-email-dzickus@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>