Commit 3da43104 authored Oct 19, 2016 by Noam Camus Committed by Vineet Gupta Oct 19, 2016

ARC: Adjust cpuinfo for non-continuous cpu ids



num_possible_cpus() returns how many CPUs may be present on system.
However we want the highest possible CPU number.
This may be differ in a sparsed possible CPUs map.
Such map achived by OF for plat-eznps.

For example if we have:
possible cpus mask 0,3

Then:
num_possible_cpus() is equal 2
	while
nr_cpu_ids is equal 4.

Only for value 4 c_start() will provide correct cpuinfo at procfs.

Signed-off-by: Noam Camus <noamc@ezchip.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

parent 27f3d2a3

arch/arc/kernel/setup.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -507,7 +507,7 @@ static void c_start(struct seq_file m, loff_t *pos)
		* way to pass it w/o having to kmalloc/free a 2 byte string.
		* Encode cpu-id as 0xFFcccc, which is decoded by show routine.
		*/
		return pos < num_possible_cpus() ? cpu_to_ptr(pos) : NULL;
		return pos < nr_cpu_ids ? cpu_to_ptr(pos) : NULL;
		}

		static void c_next(struct seq_file m, void v, loff_t pos)

Admin message