Commit Graph

401275 Commits

Author SHA1 Message Date
Dirk Brandewie 7244cb62d9 intel_pstate: Correct calculation of min pstate value
The minimum pstate is supposed to be a percentage of the maximum P
state available.  Calculate min using max pstate and not the
current max which may have been limited by the user

Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-22 01:16:39 +02:00
Brennan Shacklett d253d2a526 intel_pstate: Improve accuracy by not truncating until final result
This patch addresses Bug 60727
(https://bugzilla.kernel.org/show_bug.cgi?id=60727)
which was due to the truncation of intermediate values in the
calculations, which causes the code to consistently underestimate the
current cpu frequency, specifically 100% cpu utilization was truncated
down to the setpoint of 97%. This patch fixes the problem by keeping
the results of all intermediate calculations as fixed point numbers
rather scaling them back and forth between integers and fixed point.

References: https://bugzilla.kernel.org/show_bug.cgi?id=60727
Signed-off-by: Brennan Shacklett <bpshacklett@gmail.com>
Acked-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-22 01:15:38 +02:00
Neal Cardwell 02cf4ebd82 tcp: initialize passive-side sk_pacing_rate after 3WHS
For passive TCP connections, upon receiving the ACK that completes the
3WHS, make sure we set our pacing rate after we get our first RTT
sample.

On passive TCP connections, when we receive the ACK completing the
3WHS we do not take an RTT sample in tcp_ack(), but rather in
tcp_synack_rtt_meas(). So upon receiving the ACK that completes the
3WHS, tcp_ack() leaves sk_pacing_rate at its initial value.

Originally the initial sk_pacing_rate value was 0, so passive-side
connections defaulted to sysctl_tcp_min_tso_segs (2 segs) in skbuffs
made in the first RTT. With a default initial cwnd of 10 packets, this
happened to be correct for RTTs 5ms or bigger, so it was hard to
see problems in WAN or emulated WAN testing.

Since 7eec4174ff ("pkt_sched: fq: fix non TCP flows pacing"), the
initial sk_pacing_rate is 0xffffffff. So after that change, passive
TCP connections were keeping this value (and using large numbers of
segments per skbuff) until receiving an ACK for data.

Signed-off-by: Neal Cardwell <ncardwell@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:56:23 -04:00
Mariusz Ceier d69e0f7ea9 davinci_emac.c: Fix IFF_ALLMULTI setup
When IFF_ALLMULTI flag is set on interface and IFF_PROMISC isn't,
emac_dev_mcast_set should only enable RX of multicasts and reset
MACHASH registers.

It does this, but afterwards it either sets up multicast MACs
filtering or disables RX of multicasts and resets MACHASH registers
again, rendering IFF_ALLMULTI flag useless.

This patch fixes emac_dev_mcast_set, so that multicast MACs filtering and
disabling of RX of multicasts are skipped when IFF_ALLMULTI flag is set.

Tested with kernel 2.6.37.

Signed-off-by: Mariusz Ceier <mceier+kernel@gmail.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:56:23 -04:00
Alexandre Belloni 7e4d8a193f mac802154: correct a typo in ieee802154_alloc_device() prototype
This has no other impact than a cosmetic one.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:56:23 -04:00
Hannes Frederic Sowa c2f17e827b ipv6: probe routes asynchronous in rt6_probe
Routes need to be probed asynchronous otherwise the call stack gets
exhausted when the kernel attemps to deliver another skb inline, like
e.g. xt_TEE does, and we probe at the same time.

We update neigh->updated still at once, otherwise we would send to
many probes.

Cc: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:56:22 -04:00
David S. Miller 3a70417c1d Merge branch 'rt6i_gateway'
Julian Anastasov says:

====================
ipv6: use rt6i_gateway as nexthop

	The following patchset makes sure that rt6i_gateway
contains valid nexthop information in all cases, so that
we can use different nexthop for sending.

	The first patch is a simple fix that makes IPVS, TEE,
RAW(hdrincl) and RTF_DYNAMIC(without RTF_GATEWAY) work as
before 3.9. There is a single corner case not solved by
this patch: RAW(hdrincl) or TEE using local address for
nexthop, a silly feature, I guess. In this case we
see zeroes in rt6i_gateway because we get route that is not
cloned. This is solved only with patch 2.

	The second patch is an optimization that makes sure
all resulting routes have rt6i_gateway filled, so that we
can avoid the complex ipv6_addr_any() call added to rt6_nexthop()
by patch 1. And it sets rt6i_gateway for local routes, a case
not handled by patch 1.

	The third patch uses the new rt6_nexthop() function to fix
the matching of gateways in the same way as commit bbb5823cf7
("netfilter: nf_conntrack: fix rt_gateway checks for H.323 helper")
fixes nf_conntrack_h323_main.c for IPv4. Currently, it depends on
the new definition of rt6_nexthop() in patch 2. Actually, if
patch 2 is applied, patch 3 becomes a cosmetic change.

	I see the following two alternatives for applying these
patches:

1. Linger patch 2 in net-next to avoid surprises in the upcoming
release. In this case patch 3 can be reworked not to depend on
the new rt6_nexthop() definition in patch 2. I guess this is a
better option, so that patch 2 can be reviewed and tested for
longer time.

2. Include all 3 patches in net tree - more risky because this
is my first attempt to change IPv6.

	Here is the situation as handled by patch 2:

	In IPv6 the resolved routes are always host routes (/128
with DST_HOST), mostly cloned ones. We allow routes in FIB
to contain rt6i_gateway with zeroes (eg. for local subnets) but
on cloning we can fill the rt6i_gateway field in result.
This works even without this patchset.

	There is a single special case where dst is provided as
skb_dst directly without a routing call: icmp6_dst_alloc(). It is a
private dst allocated just for the particular ICMP packet. Patch 2
fills rt6i_gateway in this case, needed for the new rt6_nexthop()
simplification.

	The last case is addrconf_dst_alloc(), it can put in
FIB local/anycast routes when addresses are added. Patch 2
needs to fill rt6i_gateway in this case because such routes
are returned without cloning.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:39:36 -04:00
Julian Anastasov 56e42441ed netfilter: nf_conntrack: fix rt6i_gateway checks for H.323 helper
Now when rt6_nexthop() can return nexthop address we can use it
for proper nexthop comparison of directly connected destinations.
For more information refer to commit bbb5823cf7
("netfilter: nf_conntrack: fix rt_gateway checks for H.323 helper").

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:37:01 -04:00
Julian Anastasov 550bab42f8 ipv6: fill rt6i_gateway with nexthop address
Make sure rt6i_gateway contains nexthop information in
all routes returned from lookup or when routes are directly
attached to skb for generated ICMP packets.

The effect of this patch should be a faster version of
rt6_nexthop() and the consideration of local addresses as
nexthop.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:37:01 -04:00
Julian Anastasov 96dc809514 ipv6: always prefer rt6i_gateway if present
In v3.9 6fd6ce2056 ("ipv6: Do not depend on rt->n in
ip6_finish_output2()." changed the behaviour of ip6_finish_output2()
such that the recently introduced rt6_nexthop() is used
instead of an assigned neighbor.

As rt6_nexthop() prefers rt6i_gateway only for gatewayed
routes this causes a problem for users like IPVS, xt_TEE and
RAW(hdrincl) if they want to use different address for routing
compared to the destination address.

Another case is when redirect can create RTF_DYNAMIC
route without RTF_GATEWAY flag, we ignore the rt6i_gateway
in rt6_nexthop().

Fix the above problems by considering the rt6i_gateway if
present, so that traffic routed to address on local subnet is
not wrongly diverted to the destination address.

Thanks to Simon Horman and Phil Oester for spotting the
problematic commit.

Thanks to Hannes Frederic Sowa for his review and help in testing.

Reported-by: Phil Oester <kernel@linuxace.com>
Reported-by: Mark Brooks <mark@loadbalancer.org>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:37:00 -04:00
David S. Miller 4440c6f7d5 Merge branch 'bnx2x'
Yuval Mintz says:

====================
bnx2x: Bug fixes patch series

This patch series contains fixes for various flows - several SR-IOV issues
are fixed, ethtool callbacks (coalescing and register dump) are corrected,
null pointer dereference on error flows is prevented, etc.

Changes from V1
---------------
 - Patch 2  "bnx2x: Prevent an illegal pointer dereference during panic"
   is revised, with improved handling of edge cases.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:31:53 -04:00
Merav Sicron edd3147601 bnx2x: Set NETIF_F_HIGHDMA unconditionally
Current driver implementation incorrectly sets the flag only if 64-bit
DMA mask succeeded.

Signed-off-by: Merav Sicron <meravs@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:31:36 -04:00
Dmitry Kravkov 4293b9f57a bnx2x: Don't pretend during register dump
As part of a register dump, the interface pretends to have the identity
of other interfaces of the same physical device in order to perform
HW configuration for them - specifically, it needs to prevent attentions
from generating on those functions as the register dump accesses registers
in common blocks which whose reading might generate an attention.

However, such pretension is unsafe - unlike other flows in which the driver
uses pretend, during register dump there is no guarantee no other HW access
will take place (by other flows). If such access will take place, the HW will
be accessed by the wrong interface, and leave both functions in an incorrect
state.

This patch removes all pretensions from the register dump flow. Instead, it
changes initial configuration of attentions such that no fatal attention will
be generated for other functions as a result of the register dump
(notice however, a debug print claiming an attention from other functions IS
possible during the register dump)

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:31:36 -04:00
Ariel Elior 32316a46f2 bnx2x: Lock DMAE when used by statistic flow
bnx2x has several clients to its DMAE machines - all of them with the exception
of the statistics flow used the same locking mechanisms to synchronize the DMAE
machines' usage.

Since statistics (which are periodically entered) use DMAE without taking the
locks, they may erase the commands which were previously set -
e.g., it may cause a VF to timeout while waiting for a PF answer on the VF-PF
channel as that command header would have been overwritten by the statistics'
header.

This patch makes certain that all flows utilizing DMAE will use the same
API, assuring that the locking scheme will be kept by all said flows.

Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:31:35 -04:00
Yuval Mintz 6b991c3763 bnx2x: Prevent null pointer dereference on error flow
If debug message is open and bnx2x_vfop_qdtor_cmd() were to fail,
the resulting print would have caused a null pointer dereference.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:31:35 -04:00
Ariel Elior 0907f34c37 bnx2x: Fix config when SR-IOV and iSCSI are enabled
Starting with commit b9871bc "bnx2x: VF RSS support - PF side", if a PF will
have SR-IOV supported in its PCI configuration space, storage drivers will not
work for that interface.

This patch fixes the resource calculation to allow such a configuration to
properly work.

Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:31:35 -04:00
Dmitry Kravkov 6802516edd bnx2x: Fix Coalescing configuration
bnx2x drivers configure coalescing incorrectly (e.g., as a result of a call
to 'ethtool -c'). Although this is almost invisible to the user (due to NAPI)
designated tests will show the configuration is incorrect.

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:31:35 -04:00
Ariel Elior 31329afdac bnx2x: Unlock VF-PF channel on MAC/VLAN config error
Current code returns upon failure, leaving the VF-PF in an unusable state;
This patch adds the missing release so further commands could pass between
PF and VF.

Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:31:35 -04:00
Yuval Mintz 1a6974b2c7 bnx2x: Prevent an illegal pointer dereference during panic
During a panic, the driver tries to print the Management FW buffer of recent
commands. To do so, the driver reads the address of that buffer from a known
address. If the buffer is unavailable (e.g., PCI reads don't work, MCP is
failing, etc.), the driver will try to access the address it has read, possibly
causing a kernel panic.

This check 'sanitizes' the access, validating the read value is indeed a valid
address inside the management FW's buffers.
The patch also removes a read outside the scope of the buffer, which resulted
in some unrelated chraracters appearing in the log.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:31:35 -04:00
Yuval Mintz b1239723f0 bnx2x: Fix Maximum CoS estimation for VFs
bnx2x VFs do not support Multi-CoS; Current implementation
erroneously sets the VFs maximal number of CoS to be > 1.

This will cause the driver to call alloc_etherdev_mqs() with
a number of queues it cannot possibly support and reflects
in 'odd' driver prints.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 18:31:35 -04:00
Mugunthan V N 49595b7b21 drivers: net: cpsw: fix kernel warn during iperf test with interrupt pacing
When interrupt pacing is enabled, receive/transmit statistics are not
updated properly by hardware which leads to ISR return with IRQ_NONE
and inturn kernel disables the interrupt. This patch removed the checking
of receive/transmit statistics from ISR.

This patch is verified with AM335x Beagle Bone Black and below is the
kernel warn when interrupt pacing is enabled.

[  104.298254] irq 58: nobody cared (try booting with the "irqpoll" option)
[  104.305356] CPU: 0 PID: 1073 Comm: iperf Not tainted 3.12.0-rc3-00342-g77d4015 #3
[  104.313284] [<c001bb84>] (unwind_backtrace+0x0/0xf0) from [<c0017db0>] (show_stack+0x10/0x14)
[  104.322282] [<c0017db0>] (show_stack+0x10/0x14) from [<c0507920>] (dump_stack+0x78/0x94)
[  104.330816] [<c0507920>] (dump_stack+0x78/0x94) from [<c0088c1c>] (__report_bad_irq+0x20/0xc0)
[  104.339889] [<c0088c1c>] (__report_bad_irq+0x20/0xc0) from [<c008912c>] (note_interrupt+0x1dc/0x23c)
[  104.349505] [<c008912c>] (note_interrupt+0x1dc/0x23c) from [<c0086d74>] (handle_irq_event_percpu+0xc4/0x238)
[  104.359851] [<c0086d74>] (handle_irq_event_percpu+0xc4/0x238) from [<c0086f24>] (handle_irq_event+0x3c/0x5c)
[  104.370198] [<c0086f24>] (handle_irq_event+0x3c/0x5c) from [<c008991c>] (handle_level_irq+0xac/0x10c)
[  104.379907] [<c008991c>] (handle_level_irq+0xac/0x10c) from [<c00866d8>] (generic_handle_irq+0x20/0x30)
[  104.389812] [<c00866d8>] (generic_handle_irq+0x20/0x30) from [<c0014ce8>] (handle_IRQ+0x4c/0xb0)
[  104.399066] [<c0014ce8>] (handle_IRQ+0x4c/0xb0) from [<c000856c>] (omap3_intc_handle_irq+0x60/0x74)
[  104.408598] [<c000856c>] (omap3_intc_handle_irq+0x60/0x74) from [<c050d8e4>] (__irq_svc+0x44/0x5c)
[  104.418021] Exception stack(0xde4f7c00 to 0xde4f7c48)
[  104.423345] 7c00: 00000001 00000000 00000000 dd002140 60000013 de006e54 00000002 00000000
[  104.431952] 7c20: de345748 00000040 c11c8588 00018ee0 00000000 de4f7c48 c009dfc8 c050d300
[  104.440553] 7c40: 60000013 ffffffff
[  104.444237] [<c050d8e4>] (__irq_svc+0x44/0x5c) from [<c050d300>] (_raw_spin_unlock_irqrestore+0x34/0x44)
[  104.454220] [<c050d300>] (_raw_spin_unlock_irqrestore+0x34/0x44) from [<c00868c0>] (__irq_put_desc_unlock+0x14/0x38)
[  104.465295] [<c00868c0>] (__irq_put_desc_unlock+0x14/0x38) from [<c0088068>] (enable_irq+0x4c/0x74)
[  104.474829] [<c0088068>] (enable_irq+0x4c/0x74) from [<c03abd24>] (cpsw_poll+0xb8/0xdc)
[  104.483276] [<c03abd24>] (cpsw_poll+0xb8/0xdc) from [<c044ef68>] (net_rx_action+0xc0/0x1e8)
[  104.492085] [<c044ef68>] (net_rx_action+0xc0/0x1e8) from [<c0048a90>] (__do_softirq+0x100/0x27c)
[  104.501338] [<c0048a90>] (__do_softirq+0x100/0x27c) from [<c0048cd0>] (do_softirq+0x68/0x70)
[  104.510224] [<c0048cd0>] (do_softirq+0x68/0x70) from [<c0048e8c>] (local_bh_enable+0xd0/0xe4)
[  104.519211] [<c0048e8c>] (local_bh_enable+0xd0/0xe4) from [<c048c774>] (tcp_rcv_established+0x450/0x648)
[  104.529201] [<c048c774>] (tcp_rcv_established+0x450/0x648) from [<c0494904>] (tcp_v4_do_rcv+0x154/0x474)
[  104.539195] [<c0494904>] (tcp_v4_do_rcv+0x154/0x474) from [<c043d750>] (release_sock+0xac/0x1ac)
[  104.548448] [<c043d750>] (release_sock+0xac/0x1ac) from [<c04844e8>] (tcp_recvmsg+0x4d0/0xa8c)
[  104.557528] [<c04844e8>] (tcp_recvmsg+0x4d0/0xa8c) from [<c04a8720>] (inet_recvmsg+0xcc/0xf0)
[  104.566507] [<c04a8720>] (inet_recvmsg+0xcc/0xf0) from [<c0439744>] (sock_recvmsg+0x90/0xb0)
[  104.575394] [<c0439744>] (sock_recvmsg+0x90/0xb0) from [<c043b778>] (SyS_recvfrom+0x88/0xd8)
[  104.584280] [<c043b778>] (SyS_recvfrom+0x88/0xd8) from [<c043b7e0>] (sys_recv+0x18/0x20)
[  104.592805] [<c043b7e0>] (sys_recv+0x18/0x20) from [<c0013da0>] (ret_fast_syscall+0x0/0x48)
[  104.601587] handlers:
[  104.603992] [<c03acd94>] cpsw_interrupt
[  104.608040] Disabling IRQ #58

Cc: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-21 17:22:54 -04:00
Yann Droneaud 7afbddfae9 IB/core: Temporarily disable create_flow/destroy_flow uverbs
The create_flow/destroy_flow uverbs and the associated extensions to
the user-kernel verbs ABI are under review and are too experimental to
freeze at this point.

So userspace is not exposed to experimental features and an uinstable
ABI, temporarily disable this for v3.12 (with a Kconfig option behind
staging to reenable it if desired).

The feature will be enabled after proper cleanup for v3.13.

Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Link: http://marc.info/?i=cover.1381351016.git.ydroneaud@opteya.com
Link: http://marc.info/?i=cover.1381177342.git.ydroneaud@opteya.com

[ Add a Kconfig option to reenable these verbs.  - Roland ]

Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-10-21 09:44:17 -07:00
David Herrmann 86b84167d4 HID: wiimote: add LEGO-wiimote VID
The LEGO-wiimote uses a different VID than the Nintendo ID. The device is
technically the same so add the ID.

Cc: <stable@vger.kernel.org> # 3.11+
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-10-21 13:39:37 +02:00
Zhang Rui 167c3ad268 Merge branch 'x86_pkg_temp' of .git into for-rc 2013-10-21 11:26:45 +08:00
Zhang Rui 6ddcb7e635 Revert "drivers: thermal: parent virtual hwmon with thermal zone"
Commit b82715fdd4 introduces
a 'device' subdirectory under /sys/class/hwmon/hwmonX/ directory,
for the thermal_zone hwmon devices. And this results in different
handling by libsensors.

The problem is reported and discussed in this thread
http://marc.info/?l=linux-pm&m=138229306109596&w=2

This patch reverts commit b82715fdd4.

Reported-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2013-10-21 11:16:29 +08:00
Linus Torvalds 0df651a074 Merge branch 'parisc-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parsic fixes from Helge Deller:
 "There are just two small fixes in here:
   - Revert a commit which exported the flush_cache_page function.  This
     was noticed by Christoph Hellwig.
   - Enable the DEVTMPFS, DEVTMPFS_MOUNT and BLK_DEV_INITRD config
     options in the parisc defconfigs so that latest udev/initrd finds
     the root disk at boot"

* 'parisc-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: enable DEVTMPFS, DEVTMPFS_MOUNT and BLK_DEV_INITRD in defconfigs
  Revert "parisc: Export flush_cache_page() (needed by lustre)"
2013-10-20 23:20:45 +01:00
Al Viro c7314d74fc nfsd regression since delayed fput()
Background: nfsd v[23] had throughput regression since delayed fput
went in; every read or write ends up doing fput() and we get a pair
of extra context switches out of that (plus quite a bit of work
in queue_work itselfi, apparently).  Use of schedule_delayed_work()
gives it a chance to accumulate a bit before we do __fput() on all
of them.  I'm not too happy about that solution, but... on at least
one real-world setup it reverts about 10% throughput loss we got from
switch to delayed fput.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-20 08:44:39 -04:00
Ingo Molnar e4f8eaad70 perf/urgent fixes:
. Fix build error on Fedora 12.
 
 . Fix to initialize fname always before use it, bug introduced
   during this merge window, from Masami Hiramatsu.
 
 . Disable PERF_RECORD_MMAP2 support, from Stephane Eranian.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

" * Fix build error on Fedora 12.

  * Fix to initialize fname always before use it, bug introduced
    during this merge window, from Masami Hiramatsu.

  * Disable PERF_RECORD_MMAP2 support, from Stephane Eranian. "

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-20 10:51:35 +02:00
David S. Miller 77d4015ba1 Merge branch 'ufo_fixes'
Jiri Pirko says:

====================
UFO fixes

Couple of patches fixing UFO functionality in different situations.

v1->v2:
- minor if{}else{} coding style adjustment suggested by Sergei Shtylyov
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-19 19:21:24 -04:00
Jiri Pirko e93b7d748b ip_output: do skb ufo init for peeked non ufo skb as well
Now, if user application does:
sendto len<mtu flag MSG_MORE
sendto len>mtu flag 0
The skb is not treated as fragmented one because it is not initialized
that way. So move the initialization to fix this.

introduced by:
commit e89e9cf539 "[IPv4/IPv6]: UFO Scatter-gather approach"

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-19 19:20:52 -04:00
Jiri Pirko c547dbf55d ip6_output: do skb ufo init for peeked non ufo skb as well
Now, if user application does:
sendto len<mtu flag MSG_MORE
sendto len>mtu flag 0
The skb is not treated as fragmented one because it is not initialized
that way. So move the initialization to fix this.

introduced by:
commit e89e9cf539 "[IPv4/IPv6]: UFO Scatter-gather approach"

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-19 19:20:52 -04:00
Jiri Pirko e36d3ff911 udp6: respect IPV6_DONTFRAG sockopt in case there are pending frames
if up->pending != 0 dontfrag is left with default value -1. That
causes that application that do:
sendto len>mtu flag MSG_MORE
sendto len>mtu flag 0
will receive EMSGSIZE errno as the result of the second sendto.

This patch fixes it by respecting IPV6_DONTFRAG socket option.

introduced by:
commit 4b340ae20d "IPv6: Complete IPV6_DONTFRAG support"

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-19 19:20:52 -04:00
Seif Mazareeb f2e5ddcc0d net: fix cipso packet validation when !NETLABEL
When CONFIG_NETLABEL is disabled, the cipso_v4_validate() function could loop
forever in the main loop if opt[opt_iter +1] == 0, this will causing a kernel
crash in an SMP system, since the CPU executing this function will
stall /not respond to IPIs.

This problem can be reproduced by running the IP Stack Integrity Checker
(http://isic.sourceforge.net) using the following command on a Linux machine
connected to DUT:

"icmpsic -s rand -d <DUT IP address> -r 123456"
wait (1-2 min)

Signed-off-by: Seif Mazareeb <seif@marvell.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-19 18:55:42 -04:00
Daniel Borkmann 90c6bd34f8 net: unix: inherit SOCK_PASS{CRED, SEC} flags from socket to fix race
In the case of credentials passing in unix stream sockets (dgram
sockets seem not affected), we get a rather sparse race after
commit 16e5726 ("af_unix: dont send SCM_CREDENTIALS by default").

We have a stream server on receiver side that requests credential
passing from senders (e.g. nc -U). Since we need to set SO_PASSCRED
on each spawned/accepted socket on server side to 1 first (as it's
not inherited), it can happen that in the time between accept() and
setsockopt() we get interrupted, the sender is being scheduled and
continues with passing data to our receiver. At that time SO_PASSCRED
is neither set on sender nor receiver side, hence in cmsg's
SCM_CREDENTIALS we get eventually pid:0, uid:65534, gid:65534
(== overflow{u,g}id) instead of what we actually would like to see.

On the sender side, here nc -U, the tests in maybe_add_creds()
invoked through unix_stream_sendmsg() would fail, as at that exact
time, as mentioned, the sender has neither SO_PASSCRED on his side
nor sees it on the server side, and we have a valid 'other' socket
in place. Thus, sender believes it would just look like a normal
connection, not needing/requesting SO_PASSCRED at that time.

As reverting 16e5726 would not be an option due to the significant
performance regression reported when having creds always passed,
one way/trade-off to prevent that would be to set SO_PASSCRED on
the listener socket and allow inheriting these flags to the spawned
socket on server side in accept(). It seems also logical to do so
if we'd tell the listener socket to pass those flags onwards, and
would fix the race.

Before, strace:

recvmsg(4, {msg_name(0)=NULL, msg_iov(1)=[{"blub\n", 4096}],
        msg_controllen=32, {cmsg_len=28, cmsg_level=SOL_SOCKET,
        cmsg_type=SCM_CREDENTIALS{pid=0, uid=65534, gid=65534}},
        msg_flags=0}, 0) = 5

After, strace:

recvmsg(4, {msg_name(0)=NULL, msg_iov(1)=[{"blub\n", 4096}],
        msg_controllen=32, {cmsg_len=28, cmsg_level=SOL_SOCKET,
        cmsg_type=SCM_CREDENTIALS{pid=11580, uid=1000, gid=1000}},
        msg_flags=0}, 0) = 5

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-19 18:50:15 -04:00
Mark Brown d7f8761b66 ALSA: Add MAINTAINERS entry for dmaengine helpers
Help ensure that Lars-Peter gets CCed on dmaengine related patches by
adding a MAINTAINERS entry for the helpers.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-10-19 22:33:26 +02:00
Takashi Iwai 20c87bd40e ASoC: Fixes for v3.12
A number of small, fairly unexciting, fixes for drivers - nothing stand
 out.
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Merge tag 'asoc-v3.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v3.12

A number of small, fairly unexciting, fixes for drivers - nothing stand
out.
2013-10-19 22:31:14 +02:00
Helge Deller c1b14041aa parisc: enable DEVTMPFS, DEVTMPFS_MOUNT and BLK_DEV_INITRD in defconfigs
Latest udev requires that DEVTMPFS and DEVTMPFS_MOUNT are enabled, else
initrd will fail to find root filesystem. Enable missing BLK_DEV_INITRD
for B180 and C3000 machines.

Signed-off-by: Helge Deller <deller@gmx.de>
2013-10-19 21:37:52 +02:00
Helge Deller a446e72bc1 Revert "parisc: Export flush_cache_page() (needed by lustre)"
This reverts commit 320c90be7b.

Christoph Hellwig <hch@infradead.org> commented:
This one shouldn't go in - Geert sent it a bit prematurely, as Lustre
shouldn't use it just to reimplement core VM functionality (which it
shouldn't use either, but that's a separate story).

Signed-off-by: Helge Deller <deller@gmx.de>
2013-10-19 21:37:40 +02:00
Linus Torvalds 31d141e3a6 Linux 3.12-rc6 2013-10-19 12:28:15 -07:00
Alex Deucher 555b1b651a drm/radeon/audio: don't set speaker allocation on DCE4+
It causes hangs on some asics.  Disable on DCE6+ as well
just to be on the safe side.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-18 20:00:09 -04:00
Linus Torvalds bdeeab62a6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fix from Chris Mason:
 "Sage hit a deadlock with ceph on btrfs, and Josef tracked it down to a
  regression in our initial rc1 pull.  When doing nocow writes we were
  sometimes starting a transaction with locks held"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: release path before starting transaction in can_nocow_extent
2013-10-18 16:46:21 -07:00
Linus Torvalds 797afdf708 ACPI and power management fixes for 3.12-rc6
- intel_pstate fix for misbehavior after system resume if sysfs
    attributes are set in a specific way before the corresponding
    suspend from Dirk Brandewie.
 
  - A recent intel_pstate fix has no effect if unsigned long is 32-bit,
    so fix it up to cover that case as well.
 
  - The s3c64xx cpufreq driver was not updated when the index field of
    struct cpufreq_frequency_table was replaced with driver_data, so
    update it now.  From Charles Keepax.
 
  - The Kconfig help text for ACPI_BUTTON still refers to /proc/acpi/event
    that has been dropped recently, so modify it to remove that reference.
    From Krzysztof Mazur.
 
  - A Lan Tianyu's change adds a missing mutex unlock to an error code
    path in acpi_resume_power_resources().
 
  - Some code related to ACPI power resources, whose very purpose is
    questionable to put it lightly, turns out to cause problems to
    happen during testing on real systems, so remove it completely
    (we may revisit that in the future if there's a compelling enough
    reason).  From Rafael J Wysocki and Aaron Lu.
 
 /
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Merge tag 'pm+acpi-3.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:

 - intel_pstate fix for misbehavior after system resume if sysfs
   attributes are set in a specific way before the corresponding suspend
   from Dirk Brandewie.

 - A recent intel_pstate fix has no effect if unsigned long is 32-bit,
   so fix it up to cover that case as well.

 - The s3c64xx cpufreq driver was not updated when the index field of
   struct cpufreq_frequency_table was replaced with driver_data, so
   update it now.  From Charles Keepax.

 - The Kconfig help text for ACPI_BUTTON still refers to
   /proc/acpi/event that has been dropped recently, so modify it to
   remove that reference.  From Krzysztof Mazur.

 - A Lan Tianyu's change adds a missing mutex unlock to an error code
   path in acpi_resume_power_resources().

 - Some code related to ACPI power resources, whose very purpose is
   questionable to put it lightly, turns out to cause problems to happen
   during testing on real systems, so remove it completely (we may
   revisit that in the future if there's a compelling enough reason).
   From Rafael J Wysocki and Aaron Lu.

* tag 'pm+acpi-3.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / PM: Drop two functions that are not used any more
  ATA / ACPI: remove power dependent device handling
  cpufreq: s3c64xx: Rename index to driver_data
  ACPI / power: Drop automaitc resume of power resource dependent devices
  intel_pstate: Fix type mismatch warning
  cpufreq / intel_pstate: Fix max_perf_pct on resume
  ACPI: remove /proc/acpi/event from ACPI_BUTTON help
  ACPI / power: Release resource_lock after acpi_power_get_state() return error
2013-10-18 14:26:51 -07:00
Himanshu Madhani 66c562efbf qlcnic: Validate Tx queue only for 82xx adapters.
o validate Tx queue only in case of adapters which supports
  multi Tx queue.

  This patch is to fix regression introduced in commit
  aa4a1f7df7
  "qlcnic: Enable Tx queue changes using ethtool for 82xx Series adapter"

Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-18 16:39:19 -04:00
Vasundhara Volam 0fb88d61bc be2net: pass if_id for v1 and V2 versions of TX_CREATE cmd
It is a required field for all TX_CREATE cmd versions > 0.
This fixes a driver initialization failure, caused by recent SH-R Firmwares
(versions > 10.0.639.0) failing the TX_CREATE cmd when if_id field is
not passed.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-18 16:32:31 -04:00
Alex Deucher 108dc8e8b4 drm/radeon: rework audio option
In 3.12 I changed audio to be enabled by default,
but you still had to turn it on via xrandr.  This
was confusing to users so change it to minic the
previous behavior:

- audio option is set to -1 (auto) by default which is
  the current 3.12 behavior (audio is enabled but requires
  xrandr to turn it on).
- if audio = 1, the audio is enabled without needing
  to mess with xrandr (previous behavior)
- audio = 0 disables audio

It retains the new feature of allowing the user to enable
audio on the fly with xrandr, but turns audio on
automatically if radeon.audio=1 is set which is what
most users expect.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
2013-10-18 16:16:19 -04:00
Alex Deucher 4b7495770c drm/radeon/audio: don't set speaker allocation on DCE3.2
It causes hangs on some asics.

Bug:
https://bugs.freedesktop.org/show_bug.cgi?id=70439

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
2013-10-18 16:16:18 -04:00
Alex Deucher d30d71e85a drm/radeon: make missing smc ucode non-fatal (CI)
Prevent driver load problems if the smc is missing.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=63011

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-18 16:16:17 -04:00
Alex Deucher d83671126d drm/radeon: make missing smc ucode non-fatal (r7xx-SI)
Prevent driver load problems if the smc is missing.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=63011

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: stable@vger.kernel.org
2013-10-18 16:16:17 -04:00
Christian König bcf6f1e935 drm/radeon/uvd: revert lower msg&fb buffer requirements on UVD3
This only seem to work for H.264 but not for VC-1 streams.

Need to investigate further why exactly.

This reverts commit 4b40e59212.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-18 16:16:16 -04:00
Christian König 5510f124c6 drm/radeon: stop the leaks in cik_ib_test
Stop leaking IB memory and scratch register space when the test fails.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-18 16:16:16 -04:00