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Code Issues Releases Wiki Activity

genirq/affinity: Move allocation of 'node_to_cpumask' to irq_build_affinity_masks() 

'node_to_cpumask' is just one temparay variable for irq_build_affinity_masks(),
so move it into irq_build_affinity_masks().

No functioanl change.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: linux-nvme@lists.infradead.org
Cc: linux-pci@vger.kernel.org
Link: https://lkml.kernel.org/r/20190125095347.17950-2-ming.lei@redhat.com
This commit is contained in:
Ming Lei 2019-01-25 17:53:43 +08:00 committed by Thomas Gleixner
parent 434537bbd5
commit 347253c42d
1 changed files with 13 additions and 14 deletions
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27
kernel/irq/affinity.c
View File

@ -175,18 +175,22 @@ out:
*/
static int irq_build_affinity_masks(const struct irq_affinity *affd,
int startvec, int numvecs, int firstvec,
cpumask_var_t *node_to_cpumask,
struct irq_affinity_desc *masks)
{
int curvec = startvec, nr_present, nr_others;
int ret = -ENOMEM;
cpumask_var_t nmsk, npresmsk;
cpumask_var_t *node_to_cpumask;
if (!zalloc_cpumask_var(&nmsk, GFP_KERNEL))
return ret;
if (!zalloc_cpumask_var(&npresmsk, GFP_KERNEL))
goto fail;
goto fail_nmsk;
node_to_cpumask = alloc_node_to_cpumask();
if (!node_to_cpumask)
goto fail_npresmsk;
ret = 0;
/* Stabilize the cpumasks */
@ -217,9 +221,12 @@ static int irq_build_affinity_masks(const struct irq_affinity *affd,
if (nr_present < numvecs)
WARN_ON(nr_present + nr_others < numvecs);
free_node_to_cpumask(node_to_cpumask);
fail_npresmsk:
free_cpumask_var(npresmsk);
fail:
fail_nmsk:
free_cpumask_var(nmsk);
return ret;
}
@ -236,7 +243,6 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
{
int affvecs = nvecs - affd->pre_vectors - affd->post_vectors;
int curvec, usedvecs;
cpumask_var_t *node_to_cpumask;
struct irq_affinity_desc *masks = NULL;
int i, nr_sets;
@ -247,13 +253,9 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
if (nvecs == affd->pre_vectors + affd->post_vectors)
return NULL;
node_to_cpumask = alloc_node_to_cpumask();
if (!node_to_cpumask)
return NULL;
masks = kcalloc(nvecs, sizeof(*masks), GFP_KERNEL);
if (!masks)
goto outnodemsk;
return NULL;
/* Fill out vectors at the beginning that don't need affinity */
for (curvec = 0; curvec < affd->pre_vectors; curvec++)
@ -271,11 +273,10 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
int ret;
ret = irq_build_affinity_masks(affd, curvec, this_vecs,
curvec, node_to_cpumask, masks);
curvec, masks);
if (ret) {
kfree(masks);
masks = NULL;
goto outnodemsk;
return NULL;
}
curvec += this_vecs;
usedvecs += this_vecs;
@ -293,8 +294,6 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
for (i = affd->pre_vectors; i < nvecs - affd->post_vectors; i++)
masks[i].is_managed = 1;
outnodemsk:
free_node_to_cpumask(node_to_cpumask);
return masks;
}