#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/cpu.h>
static void irq_spread_init_one(struct cpumask *irqmsk, struct cpumask *nmsk,
int cpus_per_vec)
{
const struct cpumask *siblmsk;
int cpu, sibl;
for ( ; cpus_per_vec > 0; ) {
cpu = cpumask_first(nmsk);
/* Should not happen, but I'm too lazy to think about it */
if (cpu >= nr_cpu_ids)
return;
cpumask_clear_cpu(cpu, nmsk);
cpumask_set_cpu(cpu, irqmsk);
cpus_per_vec--;
/* If the cpu has siblings, use them first */
siblmsk = topology_sibling_cpumask(cpu);
for (sibl = -1; cpus_per_vec > 0; ) {
sibl = cpumask_next(sibl, siblmsk);
if (sibl >= nr_cpu_ids)
break;
if (!cpumask_test_and_clear_cpu(sibl, nmsk))
continue;
cpumask_set_cpu(sibl, irqmsk);
cpus_per_vec--;
}
}
}
static int get_nodes_in_cpumask(const struct cpumask *mask, nodemask_t *nodemsk)
{
int n, nodes = 0;
/* Calculate the number of nodes in the supplied affinity mask */
for_each_online_node(n) {
if (cpumask_intersects(mask, cpumask_of_node(n))) {
node_set(n, *nodemsk);
nodes++;
}
}
return nodes;
}
/**
* irq_create_affinity_masks - Create affinity masks for multiqueue spreading
* @nvecs: The total number of vectors
* @affd: Description of the affinity requirements
*
* Returns the masks pointer or NULL if allocation failed.
*/
struct cpumask *
irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
{
int n, nodes, vecs_per_node, cpus_per_vec, extra_vecs, curvec;
int affv = nvecs - affd->pre_vectors - affd->post_vectors;
int last_affv = affv + affd->pre_vectors;
nodemask_t nodemsk = NODE_MASK_NONE;
struct cpumask *masks;
cpumask_var_t nmsk;
if (!zalloc_cpumask_var(&nmsk, GFP_KERNEL))
return NULL;
masks = kcalloc(nvecs, sizeof(*masks), GFP_KERNEL);
if (!masks)
goto out;
/* Fill out vectors at the beginning that don't need affinity */
for (curvec = 0; curvec < affd->pre_vectors; curvec++)
cpumask_copy(masks + curvec, irq_default_affinity);
/* Stabilize the cpumasks */
get_online_cpus();
nodes = get_nodes_in_cpumask(cpu_online_mask, &nodemsk);
/*
* If the number of nodes in the mask is greater than or equal the
* number of vectors we just spread the vectors across the nodes.
*/
if (affv <= nodes) {
for_each_node_mask(n, nodemsk) {
cpumask_copy(masks + curvec, cpumask_of_node(n));
if (++curvec == last_affv)
break;
}
goto done;
}
/* Spread the vectors per node */
vecs_per_node = affv / nodes;
/* Account for rounding errors */
extra_vecs = affv - (nodes * vecs_per_node);
for_each_node_mask(n, nodemsk) {
int ncpus, v, vecs_to_assign = vecs_per_node;
/* Get the cpus on this node which are in the mask */
cpumask_and(nmsk, cpu_online_mask, cpumask_of_node(n));
/* Calculate the number of cpus per vector */
ncpus = cpumask_weight(nmsk);
for (v = 0; curvec < last_affv && v < vecs_to_assign;
curvec++, v++) {
cpus_per_vec = ncpus / vecs_to_assign;
/* Account for extra vectors to compensate rounding errors */
if (extra_vecs) {
cpus_per_vec++;
if (!--extra_vecs)
vecs_per_node++;
}
irq_spread_init_one(masks + curvec, nmsk, cpus_per_vec);
}
if (curvec >= last_affv)
break;
}
done:
put_online_cpus();
/* Fill out vectors at the end that don't need affinity */
for (; curvec < nvecs; curvec++)
cpumask_copy(masks + curvec, irq_default_affinity);
out:
free_cpumask_var(nmsk);
return masks;
}
/**
* irq_calc_affinity_vectors - Calculate the optimal number of vectors
* @maxvec: The maximum number of vectors available
* @affd: Description of the affinity requirements
*/
int irq_calc_affinity_vectors(int maxvec, const struct irq_affinity *affd)
{
int resv = affd->pre_vectors + affd->post_vectors;
int vecs = maxvec - resv;
int cpus;
/* Stabilize the cpumasks */
get_online_cpus();
cpus = cpumask_weight(cpu_online_mask);
put_online_cpus();
return min(cpus, vecs) + resv;
}
3a8963e61f19021f2'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds <torvalds@linux-foundation.org></td><td class='right'>2017-02-06 14:16:23 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds <torvalds@linux-foundation.org></td><td class='right'>2017-02-06 14:16:23 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/sound/samsung-i2s.h?h=nds-private-remove&id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>396bf4cd835e62d70fad4a03a8963e61f19021f2</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/dt-bindings/sound/samsung-i2s.h?id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>79ac8f33554260fea1a8d43e6f8c4c5460115f45</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/sound/samsung-i2s.h?h=nds-private-remove&id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>include/dt-bindings/sound/samsung-i2s.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/sound/samsung-i2s.h?h=nds-private-remove&id=d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c'>d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/sound/samsung-i2s.h?h=nds-private-remove&id=396bf4cd835e62d70fad4a03a8963e61f19021f2&id2=d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/sound/samsung-i2s.h?h=nds-private-remove&id=7c2cf1c4615cc2f576d0604406cdf0065f00b83b'>7c2cf1c4615cc2f576d0604406cdf0065f00b83b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/sound/samsung-i2s.h?h=nds-private-remove&id=396bf4cd835e62d70fad4a03a8963e61f19021f2&id2=7c2cf1c4615cc2f576d0604406cdf0065f00b83b'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6</div><div class='commit-msg'>Pull crypto fixes from Herbert Xu:
- use-after-free in algif_aead
- modular aesni regression when pcbc is modular but absent
- bug causing IO page faults in ccp
- double list add in ccp
- NULL pointer dereference in qat (two patches)
- panic in chcr
- NULL pointer dereference in chcr
- out-of-bound access in chcr
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: chcr - Fix key length for RFC4106
crypto: algif_aead - Fix kernel panic on list_del
crypto: aesni - Fix failure when pcbc module is absent
crypto: ccp - Fix double add when creating new DMA command
crypto: ccp - Fix DMA operations when IOMMU is enabled
crypto: chcr - Check device is allocated before use
crypto: chcr - Fix panic on dma_unmap_sg
crypto: qat - zero esram only for DH85x devices
crypto: qat - fix bar discovery for c62x
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>Diffstat</a> (limited to 'include/dt-bindings/sound/samsung-i2s.h')</div><table summary='diffstat' class='diffstat'>