search for: rcupdat

...d: http://www.mail-archive.com/netdev@vger.kernel.org/msg54852.html Tested on x86_64 and ppc64, also compiled the four cases (NULL/non-NULL and const/non-const) with gcc version 4.1.2, and hand-checked the assembly output. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> --- rcupdate.h | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff -urpNa -X dontdiff linux-2.6.24-rc1-ego/include/linux/rcupdate.h linux-2.6.24-rc1-egoxu/include/linux/rcupdate.h --- linux-2.6.24-rc1-ego/include/linux/rcupdate.h 2007-11-06 15:30:02.000000000 -0800 +++ linux-2.6.24-rc1-eg...

Patch 1 removes CONFIG_SMP Patch 2 removes separate smp_{,r,w}mb()s as a result of patch 1 Patch 4 removes __ia64__ defines from the x86 arch tree Patch 3 is related to patch 4 and changes the VIOAPIC to emulate version 0x20 as a performance gain. It preceeds Patch 4 so as to be more clear about the functional change. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

...895d873a00b4 -r fa213888aa93 xen/arch/x86/setup.c --- a/xen/arch/x86/setup.c Tue Jan 16 10:02:50 2007 +0000 +++ b/xen/arch/x86/setup.c Tue Jan 16 14:17:36 2007 -0800 @@ -17,6 +17,7 @@ #include <xen/hypercall.h> #include <xen/keyhandler.h> #include <xen/numa.h> +#include <xen/rcupdate.h> #include <public/version.h> #ifdef CONFIG_COMPAT #include <compat/platform.h> @@ -658,6 +659,8 @@ void __init __start_xen(multiboot_info_t trap_init(); + rcu_init(); + timer_init(); early_time_init(); @@ -693,8 +696,10 @@ void __init __start_xen(mul...

...895d873a00b4 -r fa213888aa93 xen/arch/x86/setup.c --- a/xen/arch/x86/setup.c Tue Jan 16 10:02:50 2007 +0000 +++ b/xen/arch/x86/setup.c Tue Jan 16 14:17:36 2007 -0800 @@ -17,6 +17,7 @@ #include <xen/hypercall.h> #include <xen/keyhandler.h> #include <xen/numa.h> +#include <xen/rcupdate.h> #include <public/version.h> #ifdef CONFIG_COMPAT #include <compat/platform.h> @@ -658,6 +659,8 @@ void __init __start_xen(multiboot_info_t trap_init(); + rcu_init(); + timer_init(); early_time_init(); @@ -693,8 +696,10 @@ void __init __start_xen(mul...

...ahdi/drivers/dahdi/dahdi-base.c:40: include/linux/fs_struct.h:9: error: expected specifier-qualifier-list before ?rwlock_t? In file included from include/linux/gfp.h:4, from include/linux/slab.h:14, from include/linux/percpu.h:4, from include/linux/rcupdate.h:41, from include/linux/pid.h:4, from include/linux/sched.h:71, from include/linux/module.h:9, from /usr/src/dahdi/drivers/dahdi/dahdi-base.c:40: include/linux/mmzone.h:166: error: expected specifier-qualifier-list before ?spinlo...

exit_idle() should be called after irq_enter(), otherwise it throws: [ 2.513020] [ INFO: suspicious RCU usage. ] [ 2.513076] 3.6.5 #1 Not tainted [ 2.513128] ------------------------------- [ 2.513183] include/linux/rcupdate.h:725 rcu_read_lock() used illegally while idle! [ 2.513271] [ 2.513271] other info that might help us debug this: [ 2.513271] [ 2.513388] [ 2.513388] RCU used illegally from idle CPU! [ 2.513388] rcu_scheduler_active = 1, debug_locks = 1 [ 2.513511] RCU used illegally from ex...

exit_idle() should be called after irq_enter(), otherwise it throws: [ 2.513020] [ INFO: suspicious RCU usage. ] [ 2.513076] 3.6.5 #1 Not tainted [ 2.513128] ------------------------------- [ 2.513183] include/linux/rcupdate.h:725 rcu_read_lock() used illegally while idle! [ 2.513271] [ 2.513271] other info that might help us debug this: [ 2.513271] [ 2.513388] [ 2.513388] RCU used illegally from idle CPU! [ 2.513388] rcu_scheduler_active = 1, debug_locks = 1 [ 2.513511] RCU used illegally from ex...

...kernel/printk.o kernel/profile.o kernel/exit.o kernel/itimer.o kernel/time.o kernel/softirq.o kernel/resource.o kernel/sysctl.o kernel/capability.o kernel/ptrace.o kernel/timer.o kernel/user.o kernel/user_namespace.o kernel/signal.o kernel/sys.o kernel/kmod.o kernel/workqueue.o kernel/pid.o kernel/rcupdate.o kernel/extable.o kernel/params.o kernel/posix-timers.o kernel/kthread.o kernel/wait.o kernel/kfifo.o kernel/sys_ni.o kernel/posix-cpu-timers.o kernel/mutex.o kernel/hrtimer.o kernel/rwsem.o kernel/latency.o kernel/nsproxy.o kernel/srcu.o kernel/die_notifier.o kernel/utsname.o kernel/time/built-i...

...e user is virtio-balloon, yes? What alternatives were examined and what are the benefits of this approach? Have you identified any other subsystems which could utilize this? > > ... > > --- a/lib/radix-tree.c > +++ b/lib/radix-tree.c > @@ -37,6 +37,7 @@ > #include <linux/rcupdate.h> > #include <linux/slab.h> > #include <linux/string.h> > +#include <linux/xbitmap.h> > > > /* Number of nodes in fully populated tree of given height */ > @@ -78,6 +79,14 @@ static struct kmem_cache *radix_tree_node_cachep; > #define IDA_PRELO...

...e user is virtio-balloon, yes? What alternatives were examined and what are the benefits of this approach? Have you identified any other subsystems which could utilize this? > > ... > > --- a/lib/radix-tree.c > +++ b/lib/radix-tree.c > @@ -37,6 +37,7 @@ > #include <linux/rcupdate.h> > #include <linux/slab.h> > #include <linux/string.h> > +#include <linux/xbitmap.h> > > > /* Number of nodes in fully populated tree of given height */ > @@ -78,6 +79,14 @@ static struct kmem_cache *radix_tree_node_cachep; > #define IDA_PRELO...

Asias He (4): vhost-net: Always access vq->private_data under vq mutex vhost-test: Always access vq->private_data under vq mutex vhost-scsi: Always access vq->private_data under vq mutex vhost: Remove custom vhost rcu usage drivers/vhost/net.c | 37 ++++++++++++++++--------------------- drivers/vhost/scsi.c | 17 ++++++----------- drivers/vhost/test.c | 20

Asias He (4): vhost-net: Always access vq->private_data under vq mutex vhost-test: Always access vq->private_data under vq mutex vhost-scsi: Always access vq->private_data under vq mutex vhost: Remove custom vhost rcu usage drivers/vhost/net.c | 37 ++++++++++++++++--------------------- drivers/vhost/scsi.c | 17 ++++++----------- drivers/vhost/test.c | 20

...fs_crc32c(seed, data, len); + return crc32c(seed, data, len); } void btrfs_csum_final(u32 crc, char *result) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 178df4c..cdc4f11 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -23,7 +23,6 @@ #include <linux/rcupdate.h> #include "compat.h" #include "hash.h" -#include "crc32c.h" #include "ctree.h" #include "disk-io.h" #include "print-tree.h" diff --git a/fs/btrfs/hash.h b/fs/btrfs/hash.h index 2a020b2..db2ff97 100644 --- a/fs/btrfs/hash.h +++ b...

...dma-resv.h > +++ b/include/linux/dma-resv.h > @@ -41,6 +41,7 @@ > > #include <linux/ww_mutex.h> > #include <linux/dma-fence.h> > +#include <linux/kref.h> > #include <linux/slab.h> > #include <linux/seqlock.h> > #include <linux/rcupdate.h> > @@ -464,6 +465,14 @@ static inline void dma_resv_unlock(struct dma_resv *obj) > ww_mutex_unlock(&obj->lock); > } > > +static inline int kref_put_dma_resv(struct kref *kref, > + void (*release)(struct kref *kref), > + struct dma_resv *resv,...

...select_ident(skb); break; default: return -EINVAL; diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 8c8dc16..5ca42b7 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -65,7 +65,6 @@ #include <linux/nsproxy.h> #include <linux/virtio_net.h> #include <linux/rcupdate.h> -#include <net/ipv6.h> #include <net/net_namespace.h> #include <net/netns/generic.h> #include <net/rtnetlink.h> @@ -1167,8 +1166,6 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, break; } - skb_reset_network_header(skb); - if...

...select_ident(skb); break; default: return -EINVAL; diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 8c8dc16..5ca42b7 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -65,7 +65,6 @@ #include <linux/nsproxy.h> #include <linux/virtio_net.h> #include <linux/rcupdate.h> -#include <net/ipv6.h> #include <net/net_namespace.h> #include <net/netns/generic.h> #include <net/rtnetlink.h> @@ -1167,8 +1166,6 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, break; } - skb_reset_network_header(skb); - if...

...rofile.o > kernel/exit.o kernel/itimer.o kernel/time.o kernel/softirq.o > kernel/resource.o kernel/sysctl.o kernel/capability.o kernel/ptrace.o > kernel/timer.o kernel/user.o kernel/user_namespace.o kernel/signal.o > kernel/sys.o kernel/kmod.o kernel/workqueue.o kernel/pid.o > kernel/rcupdate.o kernel/extable.o kernel/params.o > kernel/posix-timers.o kernel/kthread.o kernel/wait.o kernel/kfifo.o > kernel/sys_ni.o kernel/posix-cpu-timers.o kernel/mutex.o > kernel/hrtimer.o kernel/rwsem.o kernel/latency.o kernel/nsproxy.o > kernel/srcu.o kernel/die_notifier.o kernel/utsname.o...

...sm/thread_info.h:12, from include/linux/thread_info.h:38, from include/asm-generic/preempt.h:5, from ./arch/ia64/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/sched/signal.h:5, from arch/ia64/kernel/asm-offsets.c:10: >> arch/ia64/include/asm/page.h:51:23: warning: "hpage_shift" is not defined, evaluates to 0 [-Wundef]...

...tart_sync(); printk("%s called\n", __func__); diff -r a53aaea4c698 -r a85c4081738a xen/arch/x86/setup.c --- a/xen/arch/x86/setup.c Fri Sep 07 19:54:29 2007 +0100 +++ b/xen/arch/x86/setup.c Fri Sep 07 17:37:01 2007 -0700 @@ -19,6 +19,7 @@ #include <xen/numa.h> #include <xen/rcupdate.h> #include <xen/vga.h> +#include <xen/shutdown.h> #include <public/version.h> #ifdef CONFIG_COMPAT #include <compat/platform.h> @@ -168,7 +169,7 @@ static void __init do_initcalls(void) #define EARLY_FAIL(f, a...) do { \ printk( f , ## a );...

...dix_tree_empty(&xb->xbrt); +} + +void xb_preload(gfp_t gfp); + +static inline void xb_preload_end(void) +{ + preempt_enable(); +} diff --git a/lib/radix-tree.c b/lib/radix-tree.c index 898e879..d8c3c18 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -37,6 +37,7 @@ #include <linux/rcupdate.h> #include <linux/slab.h> #include <linux/string.h> +#include <linux/xbitmap.h> /* Number of nodes in fully populated tree of given height */ @@ -78,6 +79,14 @@ static struct kmem_cache *radix_tree_node_cachep; #define IDA_PRELOAD_SIZE (IDA_MAX_PATH * 2 - 1) /* + *...