Re: [RFC Patch V1 21/30] mm, irqchip: Use cpu_to_mem()/numa_mem_id() to support memoryless node
Jason Cooper <[email protected]> Fri, 18 Jul 2014 08:40:38 -0400
| Newsgroups | gmane.linux.kernel.mm,gmane.linux.hotplug.devel,gmane.linux.kernel,gmane.linux.ports.arm.kernel |
|---|---|
| Message-ID | <[email protected]> |
On Fri, Jul 11, 2014 at 03:37:38PM +0800, Jiang Liu wrote: > When CONFIG_HAVE_MEMORYLESS_NODES is enabled, cpu_to_node()/numa_node_id() > may return a node without memory, and later cause system failure/panic > when calling kmalloc_node() and friends with returned node id. > So use cpu_to_mem()/numa_mem_id() instead to get the nearest node with > memory for the/current cpu. > > If CONFIG_HAVE_MEMORYLESS_NODES is disabled, cpu_to_mem()/numa_mem_id() > is the same as cpu_to_node()/numa_node_id(). > > Signed-off-by: Jiang Liu <[email protected]> > --- > drivers/irqchip/irq-clps711x.c | 2 +- > drivers/irqchip/irq-gic.c | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) Do you have anything depending on this? Can apply it to irqchip? If you need to keep it with other changes, Acked-by: Jason Cooper <[email protected]> But please do let me know if I can take it. thx, Jason. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to [email protected]. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"[email protected]"> [email protected] </a>