diff options
| author | Ming Lei <ming.lei@redhat.com> | 2018-03-08 11:53:55 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-04-06 12:19:50 +0200 |
| commit | 47778f33dcba7feb92031643b37e477892f82b62 (patch) | |
| tree | 0f799a947002d3384c77b86d04cda159877c3d86 /kernel/irq | |
| parent | genirq/affinity: Don't return with empty affinity masks on error (diff) | |
| download | linux-47778f33dcba7feb92031643b37e477892f82b62.tar.xz linux-47778f33dcba7feb92031643b37e477892f82b62.zip | |
genirq/affinity: Rename *node_to_possible_cpumask as *node_to_cpumask
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
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/affinity.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/kernel/irq/affinity.c b/kernel/irq/affinity.c index e0665549af59..272c968d9ef1 100644 --- 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; |