Displaying 20 results from an estimated 56 matches for "rcu_head".
2007 Jan 17
11
[PATCH] Add RCU support into Xen - Repost
...d some time after a full grace
+ * period elapses, in other words after all currently executing RCU
+ * read-side critical sections have completed. RCU read-side critical
+ * sections are delimited by rcu_read_lock() and rcu_read_unlock(),
+ * and may be nested.
+ */
+void fastcall call_rcu(struct rcu_head *head,
+ void (*func)(struct rcu_head *rcu))
+{
+ unsigned long flags;
+ struct rcu_data *rdp;
+
+ head->func = func;
+ head->next = NULL;
+ local_irq_save(flags);
+ rdp = &__get_cpu_var(rcu_data);
+ *rdp->nxttail = head;
+ rdp->nxttail = &head->next;
+ /* This should be v...
2007 Jan 17
11
[PATCH] Add RCU support into Xen - Repost
...d some time after a full grace
+ * period elapses, in other words after all currently executing RCU
+ * read-side critical sections have completed. RCU read-side critical
+ * sections are delimited by rcu_read_lock() and rcu_read_unlock(),
+ * and may be nested.
+ */
+void fastcall call_rcu(struct rcu_head *head,
+ void (*func)(struct rcu_head *rcu))
+{
+ unsigned long flags;
+ struct rcu_data *rdp;
+
+ head->func = func;
+ head->next = NULL;
+ local_irq_save(flags);
+ rdp = &__get_cpu_var(rcu_data);
+ *rdp->nxttail = head;
+ rdp->nxttail = &head->next;
+ /* This should be v...
2017 Feb 15
1
[PATCH] average: change to declare precision, not factor
...weight_rcp : \
+ (val << precision); \
}
#endif /* _LINUX_AVERAGE_H */
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 8f64a5c01345..66b25e410a41 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -402,7 +402,7 @@ struct batadv_gw_node {
struct rcu_head rcu;
};
-DECLARE_EWMA(throughput, 1024, 8)
+DECLARE_EWMA(throughput, 10, 8)
/**
* struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 159a1a733725..0e718437d080 100644
--- a/net/mac80211/ieee80211...
2017 Feb 15
1
[PATCH] average: change to declare precision, not factor
...weight_rcp : \
+ (val << precision); \
}
#endif /* _LINUX_AVERAGE_H */
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 8f64a5c01345..66b25e410a41 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -402,7 +402,7 @@ struct batadv_gw_node {
struct rcu_head rcu;
};
-DECLARE_EWMA(throughput, 1024, 8)
+DECLARE_EWMA(throughput, 10, 8)
/**
* struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 159a1a733725..0e718437d080 100644
--- a/net/mac80211/ieee80211...
2012 Dec 18
0
[PATCH] [RFC] Btrfs: Subpagesize blocksize (WIP).
...ACHE_SHIFT);
+ else
+ eb = radix_tree_lookup(&tree->buffer, start >> blocksize_bits);
if (eb && atomic_inc_not_zero(&eb->refs)) {
rcu_read_unlock();
mark_extent_buffer_accessed(eb);
@@ -4371,9 +4789,25 @@ static inline void btrfs_release_extent_buffer_rcu(struct rcu_head *head)
__free_extent_buffer(eb);
}
-/* Expects to have eb->eb_lock already held */
+/*
+ * The RCU head must point to the first extent buffer belonging to a page.
+ */
+static inline void btrfs_release_extent_buffers_rcu(struct rcu_head *head)
+{
+ struct extent_buffer *eb =
+ container_o...
2010 Jun 05
2
[PATCH] kmmio/mmiotrace: fix double free of kmmio_fault_pages
...io_fault_page(f);
- f->release_next = *release_list;
- *release_list = f;
+ if (!f->scheduled_for_release) {
+ f->release_next = *release_list;
+ *release_list = f;
+ f->scheduled_for_release = true;
+ }
}
}
@@ -471,8 +476,10 @@ static void remove_kmmio_fault_pages(struct rcu_head *head)
prevp = &f->release_next;
} else {
*prevp = f->release_next;
+ f->release_next = NULL;
+ f->scheduled_for_release = false;
}
- f = f->release_next;
+ f = *prevp;
}
spin_unlock_irqrestore(&kmmio_lock, flags);
@@ -510,6 +517,9 @@ void unregister...
2012 Jun 12
6
[RFC] net/sched/em_canid: Ematch rule to match CAN frames according to their CAN IDs
...ce (when ''tc filter show'' is invoked) AND when
+ matching EFF frames*/
+ DECLARE_BITMAP(match_sff, (1 << CAN_SFF_ID_BITS)); /* For each SFF CAN
+ ID (11 bit) there is one record in this bitfield */
+ int rules_count;
+ int eff_rules_count;
+ int sff_rules_count;
+
+ struct rcu_head rcu;
+};
+
+/**
+ * em_canid_get_id() - Extracts Can ID out of the sk_buff structure.
+ */
+static canid_t em_canid_get_id(struct sk_buff *skb)
+{
+ /* CAN ID is stored within the data field */
+ struct can_frame *cf = (struct can_frame *)skb->data;
+
+ return cf->can_id;
+}
+
+static void em...
2020 Oct 24
1
kvm+nouveau induced lockdep gripe
...Embed a rcu in ttm BO in order to release bo outside mmap_lock, and turn
the release method into calling rcu.
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -180,6 +180,7 @@ struct ttm_buffer_object {
* Members not needing protection.
*/
struct kref kref;
+ struct rcu_head rcu;
/**
* Members protected by the bo::resv::reserved lock.
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -547,10 +547,10 @@ static void ttm_bo_delayed_workqueue(str
((HZ / 100) < 1) ? 1 : HZ / 100);
}
-static void ttm_bo_release(struct kref *kref...
2018 Nov 15
0
[PATCH net-next 2/2] tuntap: free XDP dropped packets in a batch
...s/net/tun.c
index a65779c6d72f..e90a7923a5f6 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -188,6 +188,11 @@ struct tun_file {
struct xdp_rxq_info xdp_rxq;
};
+struct tun_page {
+ struct page *page;
+ int count;
+};
+
struct tun_flow_entry {
struct hlist_node hash_link;
struct rcu_head rcu;
@@ -2377,9 +2382,16 @@ static void tun_sock_write_space(struct sock *sk)
kill_fasync(&tfile->fasync, SIGIO, POLL_OUT);
}
+static void tun_put_page(struct tun_page *tpage)
+{
+ if (tpage->page)
+ __page_frag_cache_drain(tpage->page, tpage->count);
+}
+
static int tun_xdp_...
2013 Sep 01
0
[PATCH] btrfs: use list_for_each_entry_safe() when delete items
...from Miao into commit message
fs/btrfs/volumes.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 78b8717..1d1b595 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -616,13 +616,13 @@ static void free_device(struct rcu_head *head)
static int __btrfs_close_devices(struct btrfs_fs_devices *fs_devices)
{
- struct btrfs_device *device;
+ struct btrfs_device *device, *next;
if (--fs_devices->opened > 0)
return 0;
mutex_lock(&fs_devices->device_list_mutex);
- list_for_each_entry(device, &fs_d...
2011 Apr 20
4
[PATCH 1/5] Btrfs: fix bh leak on __btrfs_open_devices path
''bh'' is forgot to release if no error is detected
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
---
fs/btrfs/volumes.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 8b9fb8c..69fc902 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -631,6 +631,7 @@ static int
2010 Jun 13
1
[PATCHv2] kmmio/mmiotrace: fix double free of kmmio_fault_pages
...io_fault_page(f);
- f->release_next = *release_list;
- *release_list = f;
+ if (!f->scheduled_for_release) {
+ f->release_next = *release_list;
+ *release_list = f;
+ f->scheduled_for_release = true;
+ }
}
}
@@ -471,8 +476,10 @@ static void remove_kmmio_fault_pages(struct rcu_head *head)
prevp = &f->release_next;
} else {
*prevp = f->release_next;
+ f->release_next = NULL;
+ f->scheduled_for_release = false;
}
- f = f->release_next;
+ f = *prevp;
}
spin_unlock_irqrestore(&kmmio_lock, flags);
@@ -510,6 +517,9 @@ void unregister...
2012 Mar 09
10
[PATCH 0 of 9] (v2) arm: SMP boot
This patch series implements SMP boot for arch/arm, as far as getting
all CPUs up and running the idle loop.
Changes from v1:
- moved barriers out of loop in udelay()
- dropped broken GIC change in favour of explanatory comment
- made the increment of ready_cpus atomic (I couldn''t move the
increment to before signalling the next CPU because the PT
switch has to happen between
2016 Mar 03
2
[RFC qemu 4/4] migration: filter out guest's free pages in ram bulk stage
...b/migration/ram.c
@@ -40,6 +40,7 @@
#include "trace.h"
#include "exec/ram_addr.h"
#include "qemu/rcu_queue.h"
+#include "sysemu/balloon.h"
#ifdef DEBUG_MIGRATION_RAM
#define DPRINTF(fmt, ...) \
@@ -241,6 +242,7 @@ static struct BitmapRcu {
struct rcu_head rcu;
/* Main migration bitmap */
unsigned long *bmap;
+ unsigned long *free_pages_bmap;
/* bitmap of pages that haven't been sent even once
* only maintained and used in postcopy at the moment
* where it's used to send the dirtymap at the start
@@ -561,12 +563,...
2013 Aug 16
7
[PATCH v2] xen/console: buffer and show origin of guest PV writes
...DOMDYING_dead;
atomic_set(&d->refcnt, DOMAIN_DESTROYED);
xfree(d->mem_event);
+ xfree(d->pbuf);
if ( init_status & INIT_arch )
arch_domain_destroy(d);
if ( init_status & INIT_gnttab )
@@ -730,6 +737,7 @@ static void complete_domain_destroy(struct rcu_head *head)
#endif
xfree(d->mem_event);
+ xfree(d->pbuf);
for ( i = d->max_vcpus - 1; i >= 0; i-- )
if ( (v = d->vcpu[i]) != NULL )
diff --git a/xen/drivers/char/console.c b/xen/drivers/char/console.c
index 8ac32e4..b8d9a9f 100644
--- a/xen/drivers/char/console....
2018 Nov 15
3
[PATCH net-next 1/2] vhost_net: mitigate page reference counting during page frag refill
We do a get_page() which involves a atomic operation. This patch tries
to mitigate a per packet atomic operation by maintaining a reference
bias which is initially USHRT_MAX. Each time a page is got, instead of
calling get_page() we decrease the bias and when we find it's time to
use a new page we will decrease the bias at one time through
__page_cache_drain_cache().
Testpmd(virtio_user +
2013 Aug 27
0
[PATCH 6/9] drm/nouveau: Convert event handler list to RCU
...clude/core/event.h
index 45e8a0f..f01b173 100644
--- a/drivers/gpu/drm/nouveau/core/include/core/event.h
+++ b/drivers/gpu/drm/nouveau/core/include/core/event.h
@@ -13,6 +13,7 @@ struct nouveau_eventh {
unsigned long flags;
void *priv;
int (*func)(struct nouveau_eventh *, int index);
+ struct rcu_head rcu;
};
struct nouveau_event {
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 13b38ed..14fce8a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -106,7 +106,7 @@ nouveau_con...
2020 Jun 16
0
[PATCH v5 2/2] mm, treewide: Rename kzfree() to kfree_sensitive()
.../drivers/net/wireguard/noise.c b/drivers/net/wireguard/noise.c
index 626433690abb..4687e3d35d55 100644
--- a/drivers/net/wireguard/noise.c
+++ b/drivers/net/wireguard/noise.c
@@ -114,7 +114,7 @@ static struct noise_keypair *keypair_create(struct wg_peer *peer)
static void keypair_free_rcu(struct rcu_head *rcu)
{
- kzfree(container_of(rcu, struct noise_keypair, rcu));
+ kfree_sensitive(container_of(rcu, struct noise_keypair, rcu));
}
static void keypair_free_kref(struct kref *kref)
@@ -821,7 +821,7 @@ bool wg_noise_handshake_begin_session(struct noise_handshake *handshake,
handshake->ent...
2009 Aug 13
4
[Bridge] [PATCH] net/bridge: Add 'hairpin' port forwarding mode
...D;
br_stp_port_timer_init(p);
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index d5b5537..8319247 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -81,6 +81,9 @@ struct net_bridge_port
struct timer_list message_age_timer;
struct kobject kobj;
struct rcu_head rcu;
+
+ unsigned long flags;
+#define BR_HAIRPIN_MODE 0x00000001
};
struct net_bridge
diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
index 4a3cdf8..820643a 100644
--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -143,6 +143,22 @@ static ssize_t store_flu...
2020 Apr 13
0
[PATCH 1/2] mm, treewide: Rename kzfree() to kfree_sensitive()
.../drivers/net/wireguard/noise.c b/drivers/net/wireguard/noise.c
index 708dc61c974f..596eb3be2d9e 100644
--- a/drivers/net/wireguard/noise.c
+++ b/drivers/net/wireguard/noise.c
@@ -113,7 +113,7 @@ static struct noise_keypair *keypair_create(struct wg_peer *peer)
static void keypair_free_rcu(struct rcu_head *rcu)
{
- kzfree(container_of(rcu, struct noise_keypair, rcu));
+ kfree_sensitive(container_of(rcu, struct noise_keypair, rcu));
}
static void keypair_free_kref(struct kref *kref)
@@ -825,7 +825,7 @@ bool wg_noise_handshake_begin_session(struct noise_handshake *handshake,
handshake->ent...