genirq/affinity: Rename *node_to_possible_cpumask as *node_to_cpumask

BugLink: http://bugs.launchpad.net/bugs/1759723
The following patches will introduce two stage irq spreading for improving
irq spread on all possible CPUs.

No functional change.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: Laurence Oberman <loberman@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Link: https://lkml.kernel.org/r/20180308105358.1506-2-ming.lei@redhat.com
(cherry picked from commit 47778f33dcba7feb92031643b37e477892f82b62)
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.ibm.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/kernel/irq/affinity.c b/kernel/irq/affinity.c
index e0665549af597f91343d575ffdd2097ecff5ca9b..272c968d9ef139489262c3ee55ece41ddd66e81a 100644 (file)
--- a/kernel/irq/affinity.c
+++ b/kernel/irq/affinity.c
@@ -39,7 +39,7 @@ static void irq_spread_init_one(struct cpumask *irqmsk, struct cpumask *nmsk,
        }
 }
 
-static cpumask_var_t *alloc_node_to_possible_cpumask(void)
+static cpumask_var_t *alloc_node_to_cpumask(void)
 {
        cpumask_var_t *masks;
        int node;
@@ -62,7 +62,7 @@ out_unwind:
        return NULL;
 }
 
-static void free_node_to_possible_cpumask(cpumask_var_t *masks)
+static void free_node_to_cpumask(cpumask_var_t *masks)
 {
        int node;
 
@@ -71,7 +71,7 @@ static void free_node_to_possible_cpumask(cpumask_var_t *masks)
        kfree(masks);
 }
 
-static void build_node_to_possible_cpumask(cpumask_var_t *masks)
+static void build_node_to_cpumask(cpumask_var_t *masks)
 {
        int cpu;
 
@@ -79,14 +79,14 @@ static void build_node_to_possible_cpumask(cpumask_var_t *masks)
                cpumask_set_cpu(cpu, masks[cpu_to_node(cpu)]);
 }
 
-static int get_nodes_in_cpumask(cpumask_var_t *node_to_possible_cpumask,
+static int get_nodes_in_cpumask(cpumask_var_t *node_to_cpumask,
                                const struct cpumask *mask, nodemask_t *nodemsk)
 {
        int n, nodes = 0;
 
        /* Calculate the number of nodes in the supplied affinity mask */
        for_each_node(n) {
-               if (cpumask_intersects(mask, node_to_possible_cpumask[n])) {
+               if (cpumask_intersects(mask, node_to_cpumask[n])) {
                        node_set(n, *nodemsk);
                        nodes++;
                }
@@ -109,7 +109,7 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
        int last_affv = affv + affd->pre_vectors;
        nodemask_t nodemsk = NODE_MASK_NONE;
        struct cpumask *masks = NULL;
-       cpumask_var_t nmsk, *node_to_possible_cpumask;
+       cpumask_var_t nmsk, *node_to_cpumask;
 
        /*
         * If there aren't any vectors left after applying the pre/post
@@ -121,8 +121,8 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
        if (!zalloc_cpumask_var(&nmsk, GFP_KERNEL))
                return NULL;
 
-       node_to_possible_cpumask = alloc_node_to_possible_cpumask();
-       if (!node_to_possible_cpumask)
+       node_to_cpumask = alloc_node_to_cpumask();
+       if (!node_to_cpumask)
                goto outcpumsk;
 
        masks = kcalloc(nvecs, sizeof(*masks), GFP_KERNEL);
@@ -135,8 +135,8 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
 
        /* Stabilize the cpumasks */
        get_online_cpus();
-       build_node_to_possible_cpumask(node_to_possible_cpumask);
-       nodes = get_nodes_in_cpumask(node_to_possible_cpumask, cpu_possible_mask,
+       build_node_to_cpumask(node_to_cpumask);
+       nodes = get_nodes_in_cpumask(node_to_cpumask, cpu_possible_mask,
                                     &nodemsk);
 
        /*
@@ -146,7 +146,7 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
        if (affv <= nodes) {
                for_each_node_mask(n, nodemsk) {
                        cpumask_copy(masks + curvec,
-                                    node_to_possible_cpumask[n]);
+                                    node_to_cpumask[n]);
                        if (++curvec == last_affv)
                                break;
                }
@@ -160,7 +160,7 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
                vecs_per_node = (affv - (curvec - affd->pre_vectors)) / nodes;
 
                /* Get the cpus on this node which are in the mask */
-               cpumask_and(nmsk, cpu_possible_mask, node_to_possible_cpumask[n]);
+               cpumask_and(nmsk, cpu_possible_mask, node_to_cpumask[n]);
 
                /* Calculate the number of cpus per vector */
                ncpus = cpumask_weight(nmsk);
@@ -193,7 +193,7 @@ done:
        for (; curvec < nvecs; curvec++)
                cpumask_copy(masks + curvec, irq_default_affinity);
 outnodemsk:
-       free_node_to_possible_cpumask(node_to_possible_cpumask);
+       free_node_to_cpumask(node_to_cpumask);
 outcpumsk:
        free_cpumask_var(nmsk);
        return masks;