Displaying 20 results from an estimated 121 matches for "hlist_nod".
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hlist_node
2014 Dec 09
4
[LLVMdev] dmb ishld in AArch64
...tion problem (O1, O2) regarding memory barrier “dmb ishld”
I find in the test/CodeGen/AArch64/intrinsics-memory-barrier.ll , it’s stated that memory access around DMB should not be reordered, but when compiling the Linux kernel, I found load/store in
static inline void hlist_add_before_rcu(struct hlist_node *n,
struct hlist_node *next)
{
n->pprev = next->pprev;
n->next = next;
rcu_assign_pointer(hlist_pprev_rcu(n), n);
next->pprev = &n->next;
}
can reordered, and causes kernel crash.
f94006a8 ldr x8, [x21,#8]
f9000275 str x21, [x19]
d5033abf...
2014 Dec 09
2
[LLVMdev] dmb ishld in AArch64
...e. The code is part of the insert_leaf_info function in net/ipv4/fib_trie.c
%37 = getelementptr inbounds %struct.leaf_info* %new, i64 0, i32 0, !dbg !10245
%38 = getelementptr inbounds %struct.leaf_info* %li.0.lcssa, i64 0, i32 0, !dbg !10245
tail call void @llvm.dbg.value(metadata !{%struct.hlist_node* %37}, i64 0, metadata !10246, metadata !6594), !dbg !10247
tail call void @llvm.dbg.value(metadata !{%struct.hlist_node* %38}, i64 0, metadata !10248, metadata !6594), !dbg !10249
%39 = getelementptr inbounds %struct.leaf_info* %li.0.lcssa, i64 0, i32 0, i32 1, !dbg !10250
%40 = load %struc...
2017 Nov 21
2
4.14: WARNING: CPU: 4 PID: 2895 at block/blk-mq.c:1144 with virtio-blk (also 4.12 stable)
On 11/21/2017 11:12 AM, Christian Borntraeger wrote:
>
>
> On 11/21/2017 07:09 PM, Jens Axboe wrote:
>> On 11/21/2017 10:27 AM, Jens Axboe wrote:
>>> On 11/21/2017 03:14 AM, Christian Borntraeger wrote:
>>>> Bisect points to
>>>>
>>>> 1b5a7455d345b223d3a4658a9e5fce985b7998c1 is the first bad commit
>>>> commit
2017 Nov 21
2
4.14: WARNING: CPU: 4 PID: 2895 at block/blk-mq.c:1144 with virtio-blk (also 4.12 stable)
On 11/21/2017 11:12 AM, Christian Borntraeger wrote:
>
>
> On 11/21/2017 07:09 PM, Jens Axboe wrote:
>> On 11/21/2017 10:27 AM, Jens Axboe wrote:
>>> On 11/21/2017 03:14 AM, Christian Borntraeger wrote:
>>>> Bisect points to
>>>>
>>>> 1b5a7455d345b223d3a4658a9e5fce985b7998c1 is the first bad commit
>>>> commit
2016 Aug 12
0
[PATCH 6/6] net: virtio-net: Convert to hotplug state machine
.../drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -138,8 +138,9 @@ struct virtnet_info {
/* Does the affinity hint is set for virtqueues? */
bool affinity_hint_set;
- /* CPU hot plug notifier */
- struct notifier_block nb;
+ /* CPU hotplug instances for online & dead */
+ struct hlist_node node;
+ struct hlist_node node_dead;
/* Control VQ buffers: protected by the rtnl lock */
struct virtio_net_ctrl_hdr ctrl_hdr;
@@ -1237,25 +1238,53 @@ static void virtnet_set_affinity(struct virtnet_info *vi)
vi->affinity_hint_set = true;
}
-static int virtnet_cpu_callback(struct not...
2016 Aug 12
0
[PATCH 6/6] net: virtio-net: Convert to hotplug state machine
.../drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -138,8 +138,9 @@ struct virtnet_info {
/* Does the affinity hint is set for virtqueues? */
bool affinity_hint_set;
- /* CPU hot plug notifier */
- struct notifier_block nb;
+ /* CPU hotplug instances for online & dead */
+ struct hlist_node node;
+ struct hlist_node node_dead;
/* Control VQ buffers: protected by the rtnl lock */
struct virtio_net_ctrl_hdr ctrl_hdr;
@@ -1237,25 +1238,53 @@ static void virtnet_set_affinity(struct virtnet_info *vi)
vi->affinity_hint_set = true;
}
-static int virtnet_cpu_callback(struct not...
2017 Nov 21
0
4.14: WARNING: CPU: 4 PID: 2895 at block/blk-mq.c:1144 with virtio-blk (also 4.12 stable)
...void blk_mq_map_swqueue(struct request_queue *q);
static int blk_mq_poll_stats_bkt(const struct request *rq)
{
@@ -1947,6 +1950,15 @@ int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
return -ENOMEM;
}
+static int blk_mq_hctx_notify_prepare(unsigned int cpu, struct hlist_node *node)
+{
+ struct blk_mq_hw_ctx *hctx;
+
+ hctx = hlist_entry_safe(node, struct blk_mq_hw_ctx, cpuhp);
+ blk_mq_map_swqueue(hctx->queue);
+ return 0;
+}
+
/*
* 'cpu' is going away. splice any existing rq_list entries from this
* software queue to the hw queue dispatch list, and en...
2007 Apr 18
0
[Bridge] [PATCH] (4/4) bridge forwarding table RCU
...8,24 @@
pos && ({ n = pos->next; 1; }) && \
({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
pos = n)
+
+/**
+ * hlist_for_each_entry_rcu - iterate over rcu list of given type
+ * @pos: the type * to use as a loop counter.
+ * @pos: the &struct hlist_node to use as a loop counter.
+ * @head: the head for your list.
+ * @member: the name of the hlist_node within the struct.
+ *
+ * This list-traversal primitive may safely run concurrently with
+ * the _rcu list-mutation primitives such as hlist_add_rcu()
+ * as long as the traversal is guarded by rc...
2023 Apr 30
1
[RFC PATCH net 2/3] virtio-net: allow usage of vrings smaller than MAX_SKB_FRAGS + 2
...scriptors we may need to transmit a single packet */
> > + u16 single_pkt_max_descs;
> > +
> > + /* Do we have virtqueues with small vrings? */
> > + bool svring;
> > +
> > /* CPU hotplug instances for online & dead */
> > struct hlist_node node;
> > struct hlist_node node_dead;
>
> worth checking that all these layout changes don't push useful things to
> a different cache line. can you add that analysis?
>
Good point.
I think that we can just move these to the bottom of the struct.
>
> I see c...
2019 Jun 19
2
[PATCH 1/1] scsi: virtio_scsi: remove unused 'affinity_hint_set'
...rivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 13f1b3b..1705398 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -74,9 +74,6 @@ struct virtio_scsi {
u32 num_queues;
- /* If the affinity hint is set for virtqueues */
- bool affinity_hint_set;
-
struct hlist_node node;
/* Protected by event_vq lock */
--
2.7.4
2008 Jul 07
0
[PATCH] KVM: Add irq ack notifier list
...m/irq.c
@@ -111,3 +111,25 @@ void kvm_set_irq(struct kvm *kvm, int irq, int level)
kvm_ioapic_set_irq(kvm->arch.vioapic, irq, level);
kvm_pic_set_irq(pic_irqchip(kvm), irq, level);
}
+
+void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi)
+{
+ struct kvm_irq_ack_notifier *kian;
+ struct hlist_node *n;
+
+ hlist_for_each_entry(kian, n, &kvm->arch.irq_ack_notifier_list, link)
+ if (kian->gsi == gsi)
+ kian->irq_acked(kian);
+}
+
+void kvm_register_irq_ack_notifier(struct kvm *kvm,
+ struct kvm_irq_ack_notifier *kian)
+{
+ hlist_add_head(&kian->link, &kvm->a...
2018 Apr 19
1
[PATCH v2 net 1/3] virtio_net: split out ctrl buffer
...ntrol_buf {
+ struct virtio_net_ctrl_hdr hdr;
+ virtio_net_ctrl_ack status;
+ struct virtio_net_ctrl_mq mq;
+ u8 promisc;
+ u8 allmulti;
+ u16 vid;
+ u64 offloads;
+};
+
struct virtnet_info {
struct virtio_device *vdev;
struct virtqueue *cvq;
@@ -192,14 +203,7 @@ struct virtnet_info {
struct hlist_node node;
struct hlist_node node_dead;
- /* Control VQ buffers: protected by the rtnl lock */
- struct virtio_net_ctrl_hdr ctrl_hdr;
- virtio_net_ctrl_ack ctrl_status;
- struct virtio_net_ctrl_mq ctrl_mq;
- u8 ctrl_promisc;
- u8 ctrl_allmulti;
- u16 ctrl_vid;
- u64 ctrl_offloads;
+ struct control_...
2023 Apr 30
1
[RFC PATCH net 2/3] virtio-net: allow usage of vrings smaller than MAX_SKB_FRAGS + 2
...ol affinity_hint_set;
>
> + /* How many ring descriptors we may need to transmit a single packet */
> + u16 single_pkt_max_descs;
> +
> + /* Do we have virtqueues with small vrings? */
> + bool svring;
> +
> /* CPU hotplug instances for online & dead */
> struct hlist_node node;
> struct hlist_node node_dead;
worth checking that all these layout changes don't push useful things to
a different cache line. can you add that analysis?
I see confusiong here wrt whether some rings are "small"? all of them?
some rx rings? some tx rings? names should ma...
2012 Nov 27
3
[Bridge] [RFC PATCH 1/2] bridge: export port_no and port_id via IFA_INFO_DATA
Based on net-next.
This patch exports port->port_no port->port_id in the end of IFA_INFO_DATA.
Cc: Herbert Xu <herbert at gondor.apana.org.au>
Cc: Stephen Hemminger <shemminger at vyatta.com>
Cc: "David S. Miller" <davem at davemloft.net>
Cc: Thomas Graf <tgraf at suug.ch>
Cc: Jesper Dangaard Brouer <brouer at redhat.com>
Signed-off-by: Cong Wang
2023 Apr 30
1
[RFC PATCH net 2/3] virtio-net: allow usage of vrings smaller than MAX_SKB_FRAGS + 2
...affinity hint is set for virtqueues? */
bool affinity_hint_set;
+ /* How many ring descriptors we may need to transmit a single packet */
+ u16 single_pkt_max_descs;
+
+ /* Do we have virtqueues with small vrings? */
+ bool svring;
+
/* CPU hotplug instances for online & dead */
struct hlist_node node;
struct hlist_node node_dead;
@@ -455,6 +463,7 @@ static struct sk_buff *page_to_skb(struct virtnet_info *vi,
unsigned int copy, hdr_len, hdr_padded_len;
struct page *page_to_free = NULL;
int tailroom, shinfo_size;
+ u16 max_frags = MAX_SKB_FRAGS;
char *p, *hdr_p, *buf;
p = page...
2018 Apr 19
3
[PATCH net] virtio_net: split out ctrl buffer
...ntrol_buf {
+ struct virtio_net_ctrl_hdr hdr;
+ virtio_net_ctrl_ack status;
+ struct virtio_net_ctrl_mq mq;
+ u8 promisc;
+ u8 allmulti;
+ u16 vid;
+ u64 offloads;
+};
+
struct virtnet_info {
struct virtio_device *vdev;
struct virtqueue *cvq;
@@ -192,14 +203,7 @@ struct virtnet_info {
struct hlist_node node;
struct hlist_node node_dead;
- /* Control VQ buffers: protected by the rtnl lock */
- struct virtio_net_ctrl_hdr ctrl_hdr;
- virtio_net_ctrl_ack ctrl_status;
- struct virtio_net_ctrl_mq ctrl_mq;
- u8 ctrl_promisc;
- u8 ctrl_allmulti;
- u16 ctrl_vid;
- u64 ctrl_offloads;
+ struct control_...
2023 May 01
1
[RFC PATCH net 2/3] virtio-net: allow usage of vrings smaller than MAX_SKB_FRAGS + 2
...single packet */
> > > + u16 single_pkt_max_descs;
> > > +
> > > + /* Do we have virtqueues with small vrings? */
> > > + bool svring;
> > > +
> > > /* CPU hotplug instances for online & dead */
> > > struct hlist_node node;
> > > struct hlist_node node_dead;
> >
> > worth checking that all these layout changes don't push useful things to
> > a different cache line. can you add that analysis?
> >
>
> Good point.
> I think that we can just move these to the b...
2014 Apr 13
1
[PATCH] tools: Consolidate types.h
...u64;
+typedef int64_t s64;
typedef __u32 u32;
typedef __s32 s32;
@@ -35,6 +48,10 @@ typedef __s8 s8;
#define __bitwise
#endif
+#define __force
+#define __user
+#define __must_check
+#define __cold
typedef __u16 __bitwise __le16;
typedef __u16 __bitwise __be16;
@@ -55,4 +72,4 @@ struct hlist_node {
struct hlist_node *next, **pprev;
};
-#endif
+#endif /* _TOOLS_LINUX_TYPES_H_ */
diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index 81783c2037fc..45da209b6ed3 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -8,6 +8,7 @@ tools/include/asm/bug.h
tools/include/linux/co...
2014 Apr 13
1
[PATCH] tools: Consolidate types.h
...u64;
+typedef int64_t s64;
typedef __u32 u32;
typedef __s32 s32;
@@ -35,6 +48,10 @@ typedef __s8 s8;
#define __bitwise
#endif
+#define __force
+#define __user
+#define __must_check
+#define __cold
typedef __u16 __bitwise __le16;
typedef __u16 __bitwise __be16;
@@ -55,4 +72,4 @@ struct hlist_node {
struct hlist_node *next, **pprev;
};
-#endif
+#endif /* _TOOLS_LINUX_TYPES_H_ */
diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index 81783c2037fc..45da209b6ed3 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -8,6 +8,7 @@ tools/include/asm/bug.h
tools/include/linux/co...
2017 Nov 21
2
4.14: WARNING: CPU: 4 PID: 2895 at block/blk-mq.c:1144 with virtio-blk (also 4.12 stable)
..._queue *q);
>
> static int blk_mq_poll_stats_bkt(const struct request *rq)
> {
> @@ -1947,6 +1950,15 @@ int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
> return -ENOMEM;
> }
>
> +static int blk_mq_hctx_notify_prepare(unsigned int cpu, struct hlist_node *node)
> +{
> + struct blk_mq_hw_ctx *hctx;
> +
> + hctx = hlist_entry_safe(node, struct blk_mq_hw_ctx, cpuhp);
> + blk_mq_map_swqueue(hctx->queue);
> + return 0;
> +}
> +
> /*
> * 'cpu' is going away. splice any existing rq_list entries from this
>...