Commit 1fdc1d66 authored by Gautham R. Shenoy's avatar Gautham R. Shenoy Committed by Michael Ellerman
Browse files

powerpc/smp: Rename cpu_l1_cache_map as thread_group_l1_cache_map 



On platforms which have the "ibm,thread-groups" property, the per-cpu
variable cpu_l1_cache_map keeps a track of which group of threads
within the same core share the L1 cache, Instruction and Data flow.

This patch renames the variable to "thread_group_l1_cache_map" to make
it consistent with a subsequent patch which will introduce
thread_group_l2_cache_map.

This patch introduces no functional change.

Signed-off-by: default avatarGautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1607596739-32439-3-git-send-email-ego@linux.vnet.ibm.com
parent 790a1662

arch/powerpc/kernel/smp.c

+7 −7
Original line number Diff line number Diff line
@@ -116,10 +116,10 @@ struct thread_groups_list { 


static struct thread_groups_list tgl[NR_CPUS] __initdata;

/*

 * On big-cores system, cpu_l1_cache_map for each CPU corresponds to

 * On big-cores system, thread_group_l1_cache_map for each CPU corresponds to

 * the set its siblings that share the L1-cache.

 */

DEFINE_PER_CPU(cpumask_var_t, cpu_l1_cache_map);

DEFINE_PER_CPU(cpumask_var_t, thread_group_l1_cache_map);



/* SMP operations for this machine */

struct smp_ops_t *smp_ops;
@@ -866,7 +866,7 @@ static struct thread_groups *__init get_thread_groups(int cpu, 
	return tg;

}



static int init_cpu_l1_cache_map(int cpu)

static int init_thread_group_l1_cache_map(int cpu)



{

	int first_thread = cpu_first_thread_sibling(cpu);
@@ -885,7 +885,7 @@ static int init_cpu_l1_cache_map(int cpu) 
		return -ENODATA;

	}



	zalloc_cpumask_var_node(&per_cpu(cpu_l1_cache_map, cpu),

	zalloc_cpumask_var_node(&per_cpu(thread_group_l1_cache_map, cpu),

				GFP_KERNEL, cpu_to_node(cpu));



	for (i = first_thread; i < first_thread + threads_per_core; i++) {
@@ -897,7 +897,7 @@ static int init_cpu_l1_cache_map(int cpu) 
		}



		if (i_group_start == cpu_group_start)

			cpumask_set_cpu(i, per_cpu(cpu_l1_cache_map, cpu));

			cpumask_set_cpu(i, per_cpu(thread_group_l1_cache_map, cpu));

	}



	return 0;
@@ -976,7 +976,7 @@ static int init_big_cores(void) 
	int cpu;



	for_each_possible_cpu(cpu) {

		int err = init_cpu_l1_cache_map(cpu);

		int err = init_thread_group_l1_cache_map(cpu);



		if (err)

			return err;
@@ -1372,7 +1372,7 @@ static inline void add_cpu_to_smallcore_masks(int cpu) 


	cpumask_set_cpu(cpu, cpu_smallcore_mask(cpu));



	for_each_cpu(i, per_cpu(cpu_l1_cache_map, cpu)) {

	for_each_cpu(i, per_cpu(thread_group_l1_cache_map, cpu)) {

		if (cpu_online(i))

			set_cpus_related(i, cpu, cpu_smallcore_mask);

	}