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Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull core locking changes from Ingo Molnar:
 "The biggest changes:

   - add lockdep support for seqcount/seqlocks structures, this
     unearthed both bugs and required extra annotation.

   - move the various kernel locking primitives to the new
     kernel/locking/ directory"

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  block: Use u64_stats_init() to initialize seqcounts
  locking/lockdep: Mark __lockdep_count_forward_deps() as static
  lockdep/proc: Fix lock-time avg computation
  locking/doc: Update references to kernel/mutex.c
  ipv6: Fix possible ipv6 seqlock deadlock
  cpuset: Fix potential deadlock w/ set_mems_allowed
  seqcount: Add lockdep functionality to seqcount/seqlock structures
  net: Explicitly initialize u64_stats_sync structures for lockdep
  locking: Move the percpu-rwsem code to kernel/locking/
  locking: Move the lglocks code to kernel/locking/
  locking: Move the rwsem code to kernel/locking/
  locking: Move the rtmutex code to kernel/locking/
  locking: Move the semaphore core to kernel/locking/
  locking: Move the spinlock code to kernel/locking/
  locking: Move the lockdep code to kernel/locking/
  locking: Move the mutex code to kernel/locking/
  hung_task debugging: Add tracepoint to report the hang
  x86/locking/kconfig: Update paravirt spinlock Kconfig description
  lockstat: Report avg wait and hold times
  lockdep, x86/alternatives: Drop ancient lockdep fixup message
  ...
This commit is contained in:
Linus Torvalds
2013-11-14 16:30:30 +09:00
parent 7971e23a66 90d3839b90
commit 5e30025a31
83 changed files with 534 additions and 148 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
net/ipv4/af_inet.c
View File

@@ -1503,6 +1503,7 @@ int snmp_mib_init(void __percpu *ptr[2], size_t mibsize, size_t align)
ptr[0] = __alloc_percpu(mibsize, align);
if (!ptr[0])
return -ENOMEM;
#if SNMP_ARRAY_SZ == 2
ptr[1] = __alloc_percpu(mibsize, align);
if (!ptr[1]) {
@@ -1547,6 +1548,8 @@ static const struct net_protocol icmp_protocol = {
static __net_init int ipv4_mib_init_net(struct net *net)
{
int i;
if (snmp_mib_init((void __percpu **)net->mib.tcp_statistics,
sizeof(struct tcp_mib),
__alignof__(struct tcp_mib)) < 0)
@@ -1555,6 +1558,17 @@ static __net_init int ipv4_mib_init_net(struct net *net)
sizeof(struct ipstats_mib),
__alignof__(struct ipstats_mib)) < 0)
goto err_ip_mib;
for_each_possible_cpu(i) {
struct ipstats_mib *af_inet_stats;
af_inet_stats = per_cpu_ptr(net->mib.ip_statistics[0], i);
u64_stats_init(&af_inet_stats->syncp);
#if SNMP_ARRAY_SZ == 2
af_inet_stats = per_cpu_ptr(net->mib.ip_statistics[1], i);
u64_stats_init(&af_inet_stats->syncp);
#endif
}
if (snmp_mib_init((void __percpu **)net->mib.net_statistics,
sizeof(struct linux_mib),
__alignof__(struct linux_mib)) < 0)