[PATCHSET] percpu: add __percpu sparse annotations

Tejun Heo
2010-01-25T15:19:15Z

This patchset adds __percpu sparse annotations to all percpu users
covered by x86_64 allmodconfig. __percpu annotation teaches sparse
that percpu variables live in a separate address space and can't be
accessed directly without going through percpu accessors. This allows
detection of most percpu access mistakes involving both static and
dyanmic percpu variables.

This patchset contains the following eight patches.

0001-percpu-add-__percpu-sparse-annotations-to-core-kerne.patch
0002-percpu-add-__percpu-sparse-annotations-to-fs.patch
0003-percpu-add-__percpu-sparse-annotations-to-net.patch
0004-percpu-add-__percpu-sparse-annotations-to-net-driver.patch
0005-percpu-add-__percpu-sparse-annotations-to-x86.patch
0006-percpu-add-__percpu-sparse-annotations-to-trace.patch
0007-percpu-add-__percpu-sparse-annotations-to-hw_breakpo.patch
0008-percpu-add-__percpu-sparse-annotations-to-what-s-lef.patch

As these annotations are for sparse, none of the above patches affects
normal kernel build and most of the conversions are straight-forward
and trivial. There are a few places where the conversion isn't
completely straight-forward (but still fairly trivial). Those are
mentioned in each patch description.

I can route the patch through percpu and conflict resolution, if
necessary, wouldn't be difficult at all for these changes. If anyone
wants to route one of these patches through a different tree, please
let me know. All that's necessary would be adding dummy __percpu
definition to the patch.

If nobody objects, I'll push these into percpu tree in three or four
days.

Thanks.

arch/x86/include/asm/msr.h | 12 ++++---
arch/x86/kernel/acpi/cstate.c | 2 -
arch/x86/kernel/cpu/common.c | 2 -
arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c | 2 -
arch/x86/lib/msr-smp.c | 8 +++--
arch/x86/lib/msr.c | 6 +--
crypto/cryptd.c | 2 -
drivers/acpi/processor_perflib.c | 2 -
drivers/dma/dmaengine.c | 2 -
drivers/edac/amd64_edac.c | 2 -
drivers/md/raid5.c | 2 -
drivers/md/raid5.h | 2 -
drivers/net/chelsio/sge.c | 2 -
drivers/net/loopback.c | 16 +++++-----
drivers/net/macvlan.c | 2 -
drivers/net/veth.c | 4 +-
fs/ext4/ext4.h | 2 -
fs/nfs/iostat.h | 4 +-
fs/xfs/xfs_mount.h | 2 -
include/acpi/processor.h | 2 -
include/linux/blktrace_api.h | 4 +-
include/linux/dmaengine.h | 2 -
include/linux/ftrace_event.h | 4 +-
include/linux/genhd.h | 2 -
include/linux/hw_breakpoint.h | 8 ++---
include/linux/kexec.h | 2 -
include/linux/mmzone.h | 2 -
include/linux/module.h | 2 -
include/linux/mount.h | 2 -
include/linux/nfs_fs_sb.h | 2 -
include/linux/percpu_counter.h | 2 -
include/linux/srcu.h | 2 -
include/net/ip.h | 6 +--
include/net/ipcomp.h | 2 -
include/net/neighbour.h | 2 -
include/net/netns/conntrack.h | 2 -
include/net/netns/core.h | 2 -
include/net/route.h | 2 -
include/net/snmp.h | 12 +++++--
include/net/tcp.h | 2 -
include/trace/ftrace.h | 4 +-
kernel/hw_breakpoint.c | 14 ++++----
kernel/kexec.c | 2 -
kernel/sched.c | 4 +-
kernel/stop_machine.c | 2 -
kernel/trace/trace_event_profile.c | 16 +++++-----
kernel/trace/trace_functions_graph.c | 2 -
kernel/trace/trace_kprobe.c | 4 +-
kernel/trace/trace_ksym.c | 10 +++---
kernel/trace/trace_syscalls.c | 4 +-
mm/percpu.c | 18 ++++++-----
net/8021q/vlan.h | 2 -
net/dccp/proto.c | 5 +--
net/ipv4/af_inet.c | 46 ++++++++++++++---------------
net/ipv4/proc.c | 28 ++++++++---------
net/ipv4/route.c | 2 -
net/ipv4/tcp.c | 21 +++++++------
net/ipv6/addrconf.c | 24 +++++++--------
net/ipv6/af_inet6.c | 28 ++++++++---------
net/ipv6/proc.c | 24 ++++++++-------
net/sctp/proc.c | 2 -
net/sctp/protocol.c | 5 +--
net/xfrm/xfrm_ipcomp.c | 16 +++++-----
net/xfrm/xfrm_policy.c | 6 +--
net/xfrm/xfrm_proc.c | 3 +
samples/hw_breakpoint/data_breakpoint.c | 6 +--
66 files changed, 231 insertions(+), 209 deletions(-)

--
tejun