android/android_kernel_samsung_sm8650
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc/smp: Move coregroup mask updation to a new function

Browse Source 
Move the logic for updating the coregroup mask of a CPU to its own
function. This will help in reworking the updation of coregroup mask in
subsequent patch.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200921095653.9701-11-srikar@linux.vnet.ibm.com
This commit is contained in:
Srikar Dronamraju
2020-09-21 15:26:52 +05:30
committed by Michael Ellerman
parent 3ab33d6dc3
commit b8a97cb459
1 changed files with 19 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
arch/powerpc/kernel/smp.c
View File

@ -1337,6 +1337,23 @@ static inline void add_cpu_to_smallcore_masks(int cpu)
} }
} }
static void update_coregroup_mask(int cpu)
{
int first_thread = cpu_first_thread_sibling(cpu);
int coregroup_id = cpu_to_coregroup_id(cpu);
int i;
cpumask_set_cpu(cpu, cpu_coregroup_mask(cpu));
for_each_cpu_and(i, cpu_online_mask, cpu_cpu_mask(cpu)) {
int fcpu = cpu_first_thread_sibling(i);
if (fcpu == first_thread)
set_cpus_related(cpu, i, cpu_coregroup_mask);
else if (coregroup_id == cpu_to_coregroup_id(i))
set_cpus_related(cpu, i, cpu_coregroup_mask);
}
}
static void add_cpu_to_masks(int cpu) static void add_cpu_to_masks(int cpu)
{ {
int first_thread = cpu_first_thread_sibling(cpu); int first_thread = cpu_first_thread_sibling(cpu);
@ -1355,19 +1372,8 @@ static void add_cpu_to_masks(int cpu)
add_cpu_to_smallcore_masks(cpu); add_cpu_to_smallcore_masks(cpu);
update_mask_by_l2(cpu); update_mask_by_l2(cpu);
if (has_coregroup_support()) { if (has_coregroup_support())
int coregroup_id = cpu_to_coregroup_id(cpu); update_coregroup_mask(cpu);
cpumask_set_cpu(cpu, cpu_coregroup_mask(cpu));
for_each_cpu_and(i, cpu_online_mask, cpu_cpu_mask(cpu)) {
int fcpu = cpu_first_thread_sibling(i);
if (fcpu == first_thread)
set_cpus_related(cpu, i, cpu_coregroup_mask);
else if (coregroup_id == cpu_to_coregroup_id(i))
set_cpus_related(cpu, i, cpu_coregroup_mask);
}
}
} }
/* Activate a secondary processor. */ /* Activate a secondary processor. */