Re: [PATCH v2] x86, mm: only wait for flushes from online cpus

2012-07-18 Thread Srivatsa S. Bhat
On 07/19/2012 03:43 AM, Mandeep Singh Baines wrote: > Srivatsa S. Bhat (srivatsa.b...@linux.vnet.ibm.com) wrote: >> On 06/23/2012 03:36 AM, Mandeep Singh Baines wrote: >>> A cpu in the mm_cpumask could go offline before we send the invalidate >>> IPI causing us to wait forever. Avoid this by only w

Re: [PATCH v2] x86, mm: only wait for flushes from online cpus

2012-07-18 Thread Mandeep Singh Baines
Srivatsa S. Bhat (srivatsa.b...@linux.vnet.ibm.com) wrote: > On 06/23/2012 03:36 AM, Mandeep Singh Baines wrote: > > A cpu in the mm_cpumask could go offline before we send the invalidate > > IPI causing us to wait forever. Avoid this by only waiting for online > > cpus. > > > > We are seeing a so

Re: [PATCH v2] x86, mm: only wait for flushes from online cpus

2012-07-18 Thread Srivatsa S. Bhat
On 06/23/2012 03:36 AM, Mandeep Singh Baines wrote: > A cpu in the mm_cpumask could go offline before we send the invalidate > IPI causing us to wait forever. Avoid this by only waiting for online > cpus. > > We are seeing a softlockup reporting during shutdown. The stack > trace shows us that we

Re: [PATCH v2] x86, mm: only wait for flushes from online cpus

2012-07-18 Thread Mandeep Singh Baines
On Fri, Jun 22, 2012 at 3:06 PM, Mandeep Singh Baines wrote: > A cpu in the mm_cpumask could go offline before we send the invalidate > IPI causing us to wait forever. Avoid this by only waiting for online > cpus. > > We are seeing a softlockup reporting during shutdown. The stack > trace shows us