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/thermal/intel_powerclamp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c index 95cb7fc20e17..9d9be8cd1b50 100644 --- a/drivers/thermal/intel_powerclamp.c +++ b/drivers/thermal/intel_powerclamp.c @@ -531,7 +531,7 @@ static int start_power_clamp(void) thread = kthread_create_on_node(clamp_thread, (void *) cpu, - cpu_to_node(cpu), + cpu_to_mem(cpu), "kidle_inject/%ld", cpu); /* bind to cpu here */ if (likely(!IS_ERR(thread))) { @@ -582,7 +582,7 @@ static int powerclamp_cpu_callback(struct notifier_block *nfb, case CPU_ONLINE: thread = kthread_create_on_node(clamp_thread, (void *) cpu, - cpu_to_node(cpu), + cpu_to_mem(cpu), "kidle_inject/%lu", cpu); if (likely(!IS_ERR(thread))) { kthread_bind(thread, cpu); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
