Unfortunately I found another older example where my patch below did not work.

In that one only cpu 0 where online but 0,1,2,3 where active. So maybe:

return MAX(get_cpus_active(), get_highest_cpu_online()+1);

might work better. Someone with better knowledge about this than I have should look at the problem.

Jan

Jan Karlsson

Senior Software Engineer

System Assurance

Sony Mobile Communications

Tel: +46 703 062 174

From: Karlsson, Jan
Sent: den 15 oktober 2014 10:49
To: Discussion list for crash utility usage, maintenance and development
Subject:

I have seen a problem when it comes to the number of cpus for ARM (32-bits).

static int

arm_get_smp_cpus(void)

{

return MAX(get_cpus_active(), get_cpus_online());

}

In one of my example, “help –k” gives me:

cpu_possible_map: 0 1 2 3

cpu_present_map: 0 1 2 3

cpu_online_map: 0 3

cpu_active_map: 3

So the number of cpus will become 2. However there are code in a number of places that will then only accept cpu 0 and 1 as cpus to handle.

When I changed to code to be the same as for ARM64 things worked as expected: