Rickard Strandqvist [Thu, 1 Jan 2015 19:17:22 +0000 (20:17 +0100)]
isdn: hisax: hfc4s8s_l1: Remove some unused functions
Removes some functions that are not used anywhere:
Read_hfc32() Write_hfc32() Write_hfc16()
This was partially found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rickard Strandqvist [Thu, 1 Jan 2015 17:01:26 +0000 (18:01 +0100)]
net: fddi: skfp: smt.c: Remove unused function
Remove the function smt_ifconfig() that is not used anywhere.
This was partially found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rickard Strandqvist [Thu, 1 Jan 2015 16:49:55 +0000 (17:49 +0100)]
net: ethernet: chelsio: cxgb3: mc5.c: Remove some unused functions
Removes some functions that are not used anywhere:
dbgi_rd_rsp3() dbgi_wr_addr3()
This was partially found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 2 Jan 2015 21:24:41 +0000 (13:24 -0800)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of three fixes: one to correct an abort path thinko
causing failures (and a panic) in USB on device misbehaviour, One to
fix an out of order issue in the fnic driver and one to match discard
expectations to qemu which otherwise cause Linux to behave badly as a
guest"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
SCSI: fix regression in scsi_send_eh_cmnd()
fnic: IOMMU Fault occurs when IO and abort IO is out of order
sd: tweak discard heuristics to work around QEMU SCSI issue
Ben Pfaff [Wed, 31 Dec 2014 16:45:46 +0000 (08:45 -0800)]
openvswitch: Consistently include VLAN header in flow and port stats.
Until now, when VLAN acceleration was in use, the bytes of the VLAN header
were not included in port or flow byte counters. They were however
included when VLAN acceleration was not used. This commit corrects the
inconsistency, by always including the VLAN header in byte counters.
Previous discussion at
http://openvswitch.org/pipermail/dev/2014-December/049521.html
Reported-by: Motonori Shindo <mshindo@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Reviewed-by: Flavio Leitner <fbl@sysclose.org>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Wed, 31 Dec 2014 13:39:23 +0000 (00:39 +1100)]
tcp: Do not apply TSO segment limit to non-TSO packets
Thomas Jarosch reported IPsec TCP stalls when a PMTU event occurs.
In fact the problem was completely unrelated to IPsec. The bug is
also reproducible if you just disable TSO/GSO.
The problem is that when the MSS goes down, existing queued packet
on the TX queue that have not been transmitted yet all look like
TSO packets and get treated as such.
This then triggers a bug where tcp_mss_split_point tells us to
generate a zero-sized packet on the TX queue. Once that happens
we're screwed because the zero-sized packet can never be removed
by ACKs.
Fixes: 1485348d242 ("tcp: Apply device TSO segment limit earlier")
Reported-by: Thomas Jarosch <thomas.jarosch@intra2net.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Cheers,
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Wed, 31 Dec 2014 12:33:41 +0000 (13:33 +0100)]
net: skbuff: don't zero tc members when freeing skb
Not needed, only four cases:
- kfree_skb (or one of its aliases).
Don't need to zero, memory will be freed.
- kfree_skb_partial and head was stolen: memory will be freed.
- skb_morph: The skb header fields (including tc ones) will be
copied over from the 'to-be-morphed' skb right after
skb_release_head_state returns.
- skb_segment: Same as before, all the skb header
fields are copied over from the original skb right away.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 2 Jan 2015 20:58:21 +0000 (15:58 -0500)]
Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg say:
====================
pull request: bluetooth-next 2014-12-31
Here's the first batch of bluetooth patches for 3.20.
- Cleanups & fixes to ieee802154 drivers
- Fix synchronization of mgmt commands with respective HCI commands
- Add self-tests for LE pairing crypto functionality
- Remove 'BlueFritz!' specific handling from core using a new quirk flag
- Public address configuration support for ath3012
- Refactor debugfs support into a dedicated file
- Initial support for LE Data Length Extension feature from Bluetooth 4.2
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 2 Jan 2015 20:57:20 +0000 (12:57 -0800)]
Merge tag 'sound-3.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Nothing too exciting as a new year's start here: most of fixes are for
ASoC, a boot crash fix on OMAP for deferred probe, a few driver
specific fixes (Intel, dwc, rockchip, rt5677), in addition to typo
fixes in kerneldoc comments for PCM"
* tag 'sound-3.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: pcm: Fix kerneldoc for params_*() functions
ASoC: rockchip: i2s: fix maxburst of dma data to 4
ASoC: rockchip: i2s: fix error defination of transmit data level
ASoC: Intel: correct the fixed free block allocation
ASoC: rt5677: fixed rt5677_dsp_vad_put rt5677_dsp_vad_get panic
ASoC: Intel: Fix BYTCR machine driver MODULE_ALIAS
ASoC: Intel: Fix BYTCR firmware name
ASoC: dwc: Iterate over all channels
ASoC: dwc: Ensure FIFOs are flushed to prevent channel swap
ASoC: Intel: Add I2C dependency to two new machines
ASoC: dapm: Remove snd_soc_of_parse_audio_routing() due to deferred probe
Joe Stringer [Wed, 31 Dec 2014 03:10:16 +0000 (19:10 -0800)]
geneve: Add Geneve GRO support
This results in an approximately 30% increase in throughput
when handling encapsulated bulk traffic.
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jesse Gross [Wed, 31 Dec 2014 03:10:15 +0000 (19:10 -0800)]
net: Add Transparent Ethernet Bridging GRO support.
Currently the only tunnel protocol that supports GRO with encapsulated
Ethernet is VXLAN. This pulls out the Ethernet code into a proper layer
so that it can be used by other tunnel protocols such as GRE and Geneve.
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kostya Belezko [Tue, 30 Dec 2014 17:27:09 +0000 (12:27 -0500)]
Altera TSE: Add missing phydev
Altera network device doesn't come up after
ifconfig eth0 down
ifconfig eth0 up
The reason behind is clearing priv->phydev during tse_shutdown().
The phydev is not restored back at tse_open().
Resubmiting as to follow Tobias Klauser suggestion.
phy_start/phy_stop are called on each ifup/ifdown and
phy_disconnect is called once during the module removal.
Signed-off-by: Kostya Belezko <bkostya@hotmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 2 Jan 2015 20:41:33 +0000 (15:41 -0500)]
Merge branch 'mlx4-net'
Or Gerlitz says:
====================
mlx4 driver fixes for 3.19-rc2
Please push Maor's patch to -stable >= 3.17
Jack's fixes error-flow issues introduced in 3.19-rc1, no need for -stable.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jack Morgenstein [Tue, 30 Dec 2014 09:59:50 +0000 (11:59 +0200)]
net/mlx4_core: Fix error flow in mlx4_init_hca()
We shouldn't call UNMAP_FA here, this is done in mlx4_load_one.
If mlx4_query_func fails, we need to invoke CLOSE_HCA for both
native and master.
Fixes: a0eacca948d2 ('net/mlx4_core: Refactor mlx4_load_one')
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Maor Gottlieb [Tue, 30 Dec 2014 09:59:49 +0000 (11:59 +0200)]
net/mlx4_core: Correcly update the mtt's offset in the MR re-reg flow
Previously, mlx4_mt_rereg_write filled the MPT's entity_size with the
old MTT's page shift, which could result in using an incorrect offset.
Fix the initialization to be after we calculate the new MTT offset.
In addition, assign mtt order to -1 after calling mlx4_mtt_cleanup. This
is necessary in order to mark the MTT as invalid and avoid freeing it later.
Fixes: e630664 ('mlx4_core: Add helper functions to support MR re-registration')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shaohui Xie [Tue, 30 Dec 2014 08:28:21 +0000 (16:28 +0800)]
net/fsl: remove hardcoded clock setting from xgmac_mdio
There is no need to set the clock speed in read/write which will be performed
unnecessarily for each mdio access. Init it during probe is enough.
Also, the hardcoded clock value is not a proper way for all SoCs.
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shaohui Xie [Tue, 30 Dec 2014 08:28:00 +0000 (16:28 +0800)]
net/fsl: remove irq assignment from xgmac_mdio
Which is wrong and not used, so no extra space needed by
mdiobus_alloc_size(), use mdiobus_alloc() instead.
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shaohui Xie [Tue, 30 Dec 2014 08:27:33 +0000 (16:27 +0800)]
net/fsl: remove reset from xgmac_mdio
Since the reset is just clock setting, individual mdio reset is
not available.
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Wilk [Fri, 2 Jan 2015 20:31:14 +0000 (15:31 -0500)]
ext4: remove spurious KERN_INFO from ext4_warning call
Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Fri, 2 Jan 2015 20:16:00 +0000 (15:16 -0500)]
Revert "ext4: fix suboptimal seek_{data,hole} extents traversial"
This reverts commit
14516bb7bb6ffbd49f35389f9ece3b2045ba5815.
This was causing regression test failures with generic/285 with an ext3
filesystem using CONFIG_EXT4_USE_FOR_EXT23.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Linus Torvalds [Fri, 2 Jan 2015 20:07:50 +0000 (12:07 -0800)]
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull vhost cleanup and virtio bugfix
"There's a single change here, fixing a vhost bug where vhost
initialization fails due to used ring alignment check being too
strict"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vhost: relax used address alignment
virtio_ring: document alignment requirements
Yongjian Xu [Tue, 30 Dec 2014 08:03:46 +0000 (16:03 +0800)]
qlcnic: Fix return value in qlcnic_probe()
If the check of adapter fails and goes into the 'else' branch, the
return value 'err' should not still be zero.
Signed-off-by: Yongjian Xu <xuyongjiande@gmail.com>
Acked-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Mon, 29 Dec 2014 17:04:42 +0000 (18:04 +0100)]
net: axienet: fix error return code
Return a negative error code on failure.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Mon, 29 Dec 2014 17:04:40 +0000 (18:04 +0100)]
net: sun4i-emac: fix error return code
Return a negative error code on failure.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Mon, 29 Dec 2014 17:04:37 +0000 (18:04 +0100)]
myri10ge: fix error return code
Return a negative error code on failure.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
The patch also modifies the test of mgp->cmd to satisfy checkpatch.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Mon, 29 Dec 2014 17:04:36 +0000 (18:04 +0100)]
net: Xilinx: fix error return code
Return a negative error code on failure.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 1 Jan 2015 00:17:03 +0000 (19:17 -0500)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net
Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates 2014-12-31
This series contains updates to fixes for e100, igb and i40e.
John Linville fixes a typo in e100 that has been around for some time,
where an attempted revert actually inverted the test for eeprom_mdix_enabled.
Todd fixes up a code comment that should have been removed back in 2007.
Joe Perches fixes a possible memory leak in i40e which was reported by
Dan Carpenter using smatch.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 1 Jan 2015 00:14:52 +0000 (19:14 -0500)]
Merge branch 'gmac-next'
Roger Chen says:
====================
support GMAC driver for RK3288
Roger Chen (6):
patch1: add driver for Rockchip RK3288 SoCs integrated GMAC
patch2: define clock ID used for GMAC
patch3: modify CRU config for Rockchip RK3288 SoCs integrated GMAC
patch4: dts: rockchip: add gmac info for rk3288
patch5: dts: rockchip: enable gmac on RK3288 evb board
patch6: add document for Rockchip RK3288 GMAC
Tested on rk3288 evb board:
Execute the following command to enable ethernet,
set local IP and ping a remote host.
busybox ifconfig eth0 up
busybox ifconfig eth0 192.168.1.111
ping 192.168.1.1
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Roger Chen [Mon, 29 Dec 2014 09:44:34 +0000 (17:44 +0800)]
GMAC: add document for Rockchip RK3288 GMAC
The document descripts how to add properties for GMAC in device tree.
change since v2:
1. remove power-gpio, reset-gpio, phyirq-gpio, pmu_regulator setting
2. add "snps,reset-gpio", "snps,reset-active-low;" "snps,reset-delays-us"
Signed-off-by: Roger Chen <roger.chen@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Roger Chen [Mon, 29 Dec 2014 09:44:25 +0000 (17:44 +0800)]
ARM: dts: rockchip: enable gmac on RK3288 evb board
enable gmac in rk3288-evb-rk808.dts
changes since v2:
1. add fixed regulator for PHY
2. remove power-gpio, reset-gpio, phyirq-gpio, pmu_regulator setting
3. add "snps,reset-gpio", "snps,reset-active-low;" "snps,reset-delays-us"
Signed-off-by: Roger Chen <roger.chen@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Roger Chen [Mon, 29 Dec 2014 09:44:16 +0000 (17:44 +0800)]
ARM: dts: rockchip: add gmac info for rk3288
add gmac info in rk3288.dtsi for GMAC driver
changes since v2:
1. add drive-strength in the pinctrl settings
Signed-off-by: Roger Chen <roger.chen@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Roger Chen [Mon, 29 Dec 2014 09:44:07 +0000 (17:44 +0800)]
GMAC: modify CRU config for Rockchip RK3288 SoCs integrated GMAC
modify CRU config for GMAC driver
changes since v2:
1. remove SCLK_MAC_PLL
Signed-off-by: Roger Chen <roger.chen@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Roger Chen [Mon, 29 Dec 2014 09:43:55 +0000 (17:43 +0800)]
GMAC: define clock ID used for GMAC
changes since v2:
1. remove SCLK_MAC_PLL
Signed-off-by: Roger Chen <roger.chen@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Roger Chen [Mon, 29 Dec 2014 09:43:36 +0000 (17:43 +0800)]
GMAC: add driver for Rockchip RK3288 SoCs integrated GMAC
This driver is based on stmmac driver.
changes since v2:
- use tab instead of space for macros
- use HIWORD_UPDATE macro for GMAC_CLK_RX_DL_CFG and GMAC_CLK_TX_DL_CFG
- remove drive-strength setting in the driver and set it in the pinctrl settings
- use dev_err instead of pr_err
- remove clock names's macros, just use the real name of the clock
- use devm_clk_get() instead of clk_get()
- remove clk_set_parent(bsp_priv->clk_mac, bsp_priv->clk_mac_pll)
- remove gpio setting for LDO, just use regulator API
- remove phy reset using gpio in the glue layer, it has been handled in the stmmac driver
- remove handling phy interrupt (mii interrupt)
changes since v1:
- use BIT() to set register
- combine two remap_write() operations into one for the same register
- use macros for register value setting
- remove grf fail check in rk_gmac_setup() and save all the check in set_rgmii_speed()
- remove .tx_coe=1 in rk_gmac_data
Signed-off-by: Roger Chen <roger.chen@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Joe Perches [Mon, 8 Dec 2014 04:28:39 +0000 (04:28 +0000)]
i40e: Fix possible memory leak in i40e_dbg_dump_desc
I didn't notice that return in the code, fix it by
adding a goto out instead to free the memory.
Fixes:
> New smatch warnings:
> drivers/net/ethernet/intel/i40e/i40e_debugfs.c:832 i40e_dbg_dump_desc() warn: possible memory leak of 'ring'
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
David S. Miller [Wed, 31 Dec 2014 23:32:40 +0000 (18:32 -0500)]
igb_ptp: Include clocksource.h to get CLOCKSOURCE_MASK.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 31 Dec 2014 23:32:25 +0000 (18:32 -0500)]
e1000e: Include clocksource.h to get CLOCKSOURCE_MASK.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 31 Dec 2014 23:26:02 +0000 (18:26 -0500)]
Merge branch 'fib_trie-next'
Alexander Duyck says:
====================
fib_trie: Reduce time spent in fib_table_lookup by 35 to 75%
These patches are meant to address several performance issues I have seen
in the fib_trie implementation, and fib_table_lookup specifically. With
these changes in place I have seen a reduction of up to 35 to 75% for the
total time spent in fib_table_lookup depending on the type of search being
performed.
On a VM running in my Corei7-4930K system with a trie of maximum depth of 7
this resulted in a reduction of over 370ns per packet in the total time to
process packets received from an ixgbe interface and route them to a dummy
interface. This represents a failed lookup in the local trie followed by
a successful search in the main trie.
Baseline Refactor
ixgbe->dummy routing 1.20Mpps 2.21Mpps
------------------------------------------------------------
processing time per packet 835ns 453ns
fib_table_lookup 50.1% 418ns 25.0% 113ns
check_leaf.isra.9 7.9% 66ns -- --
ixgbe_clean_rx_irq 5.3% 44ns 9.8% 44ns
ip_route_input_noref 2.9% 25ns 4.6% 21ns
pvclock_clocksource_read 2.6% 21ns 4.6% 21ns
ip_rcv 2.6% 22ns 4.0% 18ns
In the simple case of receiving a frame and dropping it before it can reach
the socket layer I saw a reduction of 40ns per packet. This represents a
trip through the local trie with the correct leaf found with no need for
any backtracing.
Baseline Refactor
ixgbe->local receive 2.65Mpps 2.96Mpps
------------------------------------------------------------
processing time per packet 377ns 337ns
fib_table_lookup 25.1% 95ns 25.8% 87ns
ixgbe_clean_rx_irq 8.7% 33ns 9.0% 30ns
check_leaf.isra.9 7.2% 27ns -- --
ip_rcv 5.7% 21ns 6.5% 22ns
These changes have resulted in several functions being inlined such as
check_leaf and fib_find_node, but due to the code simplification the
overall size of the code has been reduced.
text data bss dec hex filename
16932 376 16 17324 43ac net/ipv4/fib_trie.o - before
15259 376 8 15643 3d1b net/ipv4/fib_trie.o - after
Changes since RFC:
Replaced this_cpu_ptr with correct call to this_cpu_inc in patch 1
Changed test for leaf_info mismatch to (key ^ n->key) & li->mask_plen in patch 10
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:57:08 +0000 (10:57 -0800)]
fib_trie: Add tracking value for suffix length
This change adds a tracking value for the maximum suffix length of all
prefixes stored in any given tnode. With this value we can determine if we
need to backtrace or not based on if the suffix is greater than the pos
value.
By doing this we can reduce the CPU overhead for lookups in the local table
as many of the prefixes there are 32b long and have a suffix length of 0
meaning we can immediately backtrace to the root node without needing to
test any of the nodes between it and where we ended up.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:57:02 +0000 (10:57 -0800)]
fib_trie: Remove checks for index >= tnode_child_length from tnode_get_child
For some reason the compiler doesn't seem to understand that when we are in
a loop that runs from tnode_child_length - 1 to 0 we don't expect the value
of tn->bits to change. As such every call to tnode_get_child was rerunning
tnode_chile_length which ended up consuming quite a bit of space in the
resultant assembly code.
I have gone though and verified that in all cases where tnode_get_child
is used we are either winding though a fixed loop from tnode_child_length -
1 to 0, or are in a fastpath case where we are verifying the value by
either checking for any remaining bits after shifting index by bits and
testing for leaf, or by using tnode_child_length.
size net/ipv4/fib_trie.o
Before:
text data bss dec hex filename
15506 376 8 15890 3e12 net/ipv4/fib_trie.o
After:
text data bss dec hex filename
14827 376 8 15211 3b6b net/ipv4/fib_trie.o
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:56:55 +0000 (10:56 -0800)]
fib_trie: inflate/halve nodes in a more RCU friendly way
This change pulls the node_set_parent functionality out of put_child_reorg
and instead leaves that to the function to take care of as well. By doing
this we can fully construct the new cluster of tnodes and all of the
pointers out of it before we start routing pointers into it.
I am suspecting this will likely fix some concurency issues though I don't
have a good test to show as such.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:56:49 +0000 (10:56 -0800)]
fib_trie: Push tnode flushing down to inflate/halve
This change pushes the tnode freeing down into the inflate and halve
functions. It makes more sense here as we have a better grasp of what is
going on and when a given cluster of nodes is ready to be freed.
I believe this may address a bug in the freeing logic as well. For some
reason if the freelist got to a certain size we would call
synchronize_rcu(). I'm assuming that what they meant to do is call
synchronize_rcu() after they had handed off that much memory via
call_rcu(). As such that is what I have updated the behavior to be.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:56:43 +0000 (10:56 -0800)]
fib_trie: Push assignment of child to parent down into inflate/halve
This change makes it so that the assignment of the tnode to the parent is
handled directly within whatever function is currently handling the node be
it inflate, halve, or resize. By doing this we can avoid some of the need
to set NULL pointers in the tree while we are resizing the subnodes.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:56:37 +0000 (10:56 -0800)]
fib_trie: Add functions should_inflate and should_halve
This change pulls the logic for if we should inflate/halve the nodes out
into separate functions. It also addresses what I believe is a bug where 1
full node is all that is needed to keep a node from ever being halved.
Simple script to reproduce the issue:
modprobe dummy; ifconfig dummy0 up
for i in `seq 0 255`; do ifconfig dummy0:$i 10.0.${i}.1/24 up; done
ifconfig dummy0:256 10.0.255.33/16 up
for i in `seq 0 254`; do ifconfig dummy0:$i down; done
Results from /proc/net/fib_triestat
Before:
Local:
Aver depth: 3.00
Max depth: 4
Leaves: 17
Prefixes: 18
Internal nodes: 11
1: 8 2: 2 10: 1
Pointers: 1048
Null ptrs: 1021
Total size: 11 kB
After:
Local:
Aver depth: 3.41
Max depth: 5
Leaves: 17
Prefixes: 18
Internal nodes: 12
1: 8 2: 3 3: 1
Pointers: 36
Null ptrs: 8
Total size: 3 kB
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:56:31 +0000 (10:56 -0800)]
fib_trie: Move resize to after inflate/halve
This change consists of a cut/paste of resize to behind inflate and halve
so that I could remove the two function prototypes.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:56:24 +0000 (10:56 -0800)]
fib_trie: Push rcu_read_lock/unlock to callers
This change is to start cleaning up some of the rcu_read_lock/unlock
handling. I realized while reviewing the code there are several spots that
I don't believe are being handled correctly or are masking warnings by
locally calling rcu_read_lock/unlock instead of calling them at the correct
level.
A common example is a call to fib_get_table followed by fib_table_lookup.
The rcu_read_lock/unlock ought to wrap both but there are several spots where
they were not wrapped.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:56:18 +0000 (10:56 -0800)]
fib_trie: Use unsigned long for anything dealing with a shift by bits
This change makes it so that anything that can be shifted by, or compared
to a value shifted by bits is updated to be an unsigned long. This is
mostly a precaution against an insanely huge address space that somehow
starts coming close to the 2^32 root node size which would require
something like 1.5 billion addresses.
I chose unsigned long instead of unsigned long long since I do not believe
it is possible to allocate a 32 bit tnode on a 32 bit system as the memory
consumed would be 16GB + 28B which exceeds the addressible space for any
one process.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:56:12 +0000 (10:56 -0800)]
fib_trie: Update meaning of pos to represent unchecked bits
This change moves the pos value to the other side of the "bits" field. By
doing this it actually simplifies a significant amount of code in the trie.
For example when halving a tree we know that the bit lost exists at
oldnode->pos, and if we inflate the tree the new bit being add is at
tn->pos. Previously to find those bits you would have to subtract pos and
bits from the keylength or start with a value of (1 << 31) and then shift
that.
There are a number of spots throughout the code that benefit from this. In
the case of the hot-path searches the main advantage is that we can drop 2
or more operations from the search path as we no longer need to compute the
value for the index to be shifted by and can instead just use the raw pos
value.
In addition the tkey_extract_bits is now defunct and can be replaced by
get_index since the two operations were doing the same thing, but now
get_index does it much more quickly as it is only an xor and shift versus a
pair of shifts and a subtraction.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:56:06 +0000 (10:56 -0800)]
fib_trie: Optimize fib_table_insert
This patch updates the fib_table_insert function to take advantage of the
changes made to improve the performance of fib_table_lookup. As a result
the code should be smaller and run faster then the original.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:56:00 +0000 (10:56 -0800)]
fib_trie: Optimize fib_find_node
This patch makes use of the same features I made use of for
fib_table_lookup to streamline fib_find_node. The resultant code should be
smaller and run faster than the original.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:55:54 +0000 (10:55 -0800)]
fib_trie: Optimize fib_table_lookup to avoid wasting time on loops/variables
This patch is meant to reduce the complexity of fib_table_lookup by reducing
the number of variables to the bare minimum while still keeping the same if
not improved functionality versus the original.
Most of this change was started off by the desire to rid the function of
chopped_off and current_prefix_length as they actually added very little to
the function since they only applied when computing the cindex. I was able
to replace them mostly with just a check for the prefix match. As long as
the prefix between the key and the node being tested was the same we know
we can search the tnode fully versus just testing cindex 0.
The second portion of the change ended up being a massive reordering.
Originally the calls to check_leaf were up near the start of the loop, and
the backtracing and descending into lower levels of tnodes was later. This
didn't make much sense as the structure of the tree means the leaves are
always the last thing to be tested. As such I reordered things so that we
instead have a loop that will delve into the tree and only exit when we
have either found a leaf or we have exhausted the tree. The advantage of
rearranging things like this is that we can fully inline check_leaf since
there is now only one reference to it in the function.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:55:47 +0000 (10:55 -0800)]
fib_trie: Merge leaf into tnode
This change makes it so that leaf and tnode are the same struct. As a
result there is no need for rt_trie_node anymore since everyting can be
merged into tnode.
On 32b systems this results in the leaf being 4 bytes larger, however I
don't know if that is really an issue as this and an eariler patch that
added bits & pos have increased the size from 20 to 28. If I am not
mistaken slub/slab allocate on power of 2 sizes so 20 was likely being
rounded up to 32 anyway.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:55:41 +0000 (10:55 -0800)]
fib_trie: Merge tnode_free and leaf_free into node_free
Both the leaf and the tnode had an rcu_head in them, but they had them in
slightly different places. Since we now have them in the same spot and
know that any node with bits == 0 is a leaf and the rest are either vmalloc
or kmalloc tnodes depending on the value of bits it makes it easy to combine
the functions and reduce overhead.
In addition I have taken advantage of the rcu_head pointer to go ahead and
put together a simple linked list instead of using the tnode pointer as
this way we can merge either type of structure for freeing.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:55:35 +0000 (10:55 -0800)]
fib_trie: Make leaf and tnode more uniform
This change makes some fundamental changes to the way leaves and tnodes are
constructed. The big differences are:
1. Leaves now populate pos and bits indicating their full key size.
2. Trie nodes now mask out their lower bits to be consistent with the leaf
3. Both structures have been reordered so that rt_trie_node now consisists
of a much larger region including the pos, bits, and rcu portions of
the tnode structure.
On 32b systems this will result in the leaf being 4B larger as the pos and
bits values were added to a hole created by the key as it was only 4B in
length.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 31 Dec 2014 18:55:29 +0000 (10:55 -0800)]
fib_trie: Update usage stats to be percpu instead of global variables
The trie usage stats were currently being shared by all threads that were
calling fib_table_lookup. As a result when multiple threads were
performing lookups simultaneously the trie would begin to cache bounce
between those threads.
In order to prevent this I have updated the usage stats to use a set of
percpu variables. By doing this we should be able to avoid the cache
bouncing and still make use of these stats.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 31 Dec 2014 22:52:18 +0000 (14:52 -0800)]
Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit
Pull audit fix from Paul Moore:
"One audit patch to resolve a panic/oops when recording filenames in
the audit log, see the mail archive link below.
The fix isn't as nice as I would like, as it involves an allocate/copy
of the filename, but it solves the problem and the overhead should
only affect users who have configured audit rules involving file
names.
We'll revisit this issue with future kernels in an attempt to make
this suck less, but in the meantime I think this fix should go into
the next release of v3.19-rcX.
[ https://marc.info/?t=
141986927600001&r=1&w=2 ]"
* 'upstream' of git://git.infradead.org/users/pcmoore/audit:
audit: create private file name copies when auditing inodes
Linus Torvalds [Wed, 31 Dec 2014 20:59:34 +0000 (12:59 -0800)]
Revert "Input: atmel_mxt_ts - use deep sleep mode when stopped"
This reverts commit
9d469d033d135d80742a4e39e6bbb4519dd5eee1.
It breaks the Chromebook Pixel touchpad (and touchscreen).
Reported-by: Dirk Hohndel <dirk@hohndel.org>
Bisected-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nick Dyer <nick.dyer@itdev.co.uk>
Cc: Benson Leung <bleung@chromium.org>
Cc: Yufeng Shen <miletus@chromium.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: stable@vger.kernel.org # v3.16+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Todd Fujinaka [Thu, 27 Nov 2014 01:00:02 +0000 (01:00 +0000)]
igb: Remove unneeded FIXME
Remove a FIXME comment that was missed in a commit on 1/2007.
Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Reported-by: nick <xerofoify@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
John W. Linville [Sat, 15 Nov 2014 01:19:53 +0000 (01:19 +0000)]
e100: fix typo in MDI/MDI-X eeprom check in e100_phy_init
Although it doesn't explicitly say so, commit
60ffa478759f39a2 ("e100:
Fix MDIO/MDIO-X") appears to be intended to revert the earlier commit
648951451e6d2d53 ("e100: fixed e100 MDI/MDI-X issues"). However,
careful examination reveals that the attempted revert actually
_inverted_ the test for eeprom_mdix_enabled. That is bound to program
a few PHYs incorrectly...
https://bugzilla.redhat.com/show_bug.cgi?id=
1156417
Signed-off-by: "John W. Linville" <linville@tuxdriver.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
stephen hemminger [Sat, 27 Dec 2014 18:01:42 +0000 (10:01 -0800)]
gre: allow live address change
The GRE tap device supports Ethernet over GRE, but doesn't
care about the source address of the tunnel, therefore it
can be changed without bring device down.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bill Hong [Sat, 27 Dec 2014 18:12:39 +0000 (10:12 -0800)]
l2tp : multicast notification to the registered listeners
Previously l2tp module did not provide any means for the user space to
get notified when tunnels/sessions are added/modified/deleted.
This change contains the following
- create a multicast group for the listeners to register.
- notify the registered listeners when the tunnels/sessions are
created/modified/deleted.
Signed-off-by: Bill Hong <bhong@brocade.com>
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Reviewed-by: Sven-Thorsten Dietrich <sven@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alex Gartrell [Fri, 26 Dec 2014 07:22:49 +0000 (23:22 -0800)]
tun: return proper error code from tun_do_read
Instead of -1 with EAGAIN, read on a O_NONBLOCK tun fd will return 0. This
fixes this by properly returning the error code from __skb_recv_datagram.
Signed-off-by: Alex Gartrell <agartrell@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alex Gartrell [Fri, 26 Dec 2014 07:05:03 +0000 (23:05 -0800)]
tun: Fixed unsigned/signed comparison
Validated that this was actually using the unsigned comparison with gdb.
Signed-off-by: Alex Gartrell <agartrell@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fabian Frederick [Thu, 25 Dec 2014 11:05:50 +0000 (12:05 +0100)]
tipc: replace 0 by NULL for pointers
Fix sparse warning:
net/tipc/link.c:1924:40: warning: Using plain integer as NULL pointer
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 31 Dec 2014 18:08:54 +0000 (13:08 -0500)]
Merge branch 'enic-next'
Govindarajulu Varadarajan says:
====================
enic: Check for DMA mapping error
After dma mapping the buffers, enic does not call dma_mapping_error() to check
if mapping is successful.
This series fixes the issue by checking return value of pci_dma_mapping_error()
after pci_map_single().
This is reported by redhat here
https://bugzilla.redhat.com/show_bug.cgi?id=
1145016
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Govindarajulu Varadarajan [Wed, 24 Dec 2014 10:29:38 +0000 (15:59 +0530)]
enic: add stats for dma mapping error
This patch adds generic statistics for enic. As of now dma_map_error is the only
member. dma_map_erro is incremented every time dma maping error happens.
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Govindarajulu Varadarajan [Wed, 24 Dec 2014 10:29:37 +0000 (15:59 +0530)]
enic: check dma_mapping_error
This patch checks for pci_dma_mapping_error() after dma mapping the data.
If the dma mapping fails we remove the previously queued frags and return
NETDEV_TX_OK.
Reported-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Govindarajulu Varadarajan [Wed, 24 Dec 2014 10:29:36 +0000 (15:59 +0530)]
enic: make vnic_wq_buf doubly linked
This patch makes vnic_wq_buf doubly liked list. This is needed for dma_mapping
error check, in case some frag's dma map fails, we need to move back and remove
previously queued buffers.
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 31 Dec 2014 18:06:57 +0000 (13:06 -0500)]
Merge branch 'fec-next'
Fugang Duan says:
====================
net: fec: add Wake-on-LAN support
The patch series enable FEC Wake-on-LAN feature for i.MX6q/dl and i.MX6SX SOCs.
FEC HW support sleep mode, when system in suspend status with FEC all clock gate
off, magic packet can wake up system. For different SOCs, there have special SOC
GPR register to let FEC enter sleep mode or exit sleep mode, add these to platform
callback for driver' call.
Patch#1: add WOL interface supports.
Patch#2: add SOC special sleep of/off operations for driver's sleep callback.
Patch#3: add magic pattern support for devicetree.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Nimrod Andy [Wed, 24 Dec 2014 09:30:41 +0000 (17:30 +0800)]
ARM: dts: imx6qdl: enable FEC magic-packet feature
Add FEC magic-packet feature support.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nimrod Andy [Wed, 24 Dec 2014 09:30:40 +0000 (17:30 +0800)]
ARM: imx: add FEC sleep mode callback function
i.MX6q/dl, i.MX6SX SOCs enet support sleep mode that magic packet can
wake up system in suspend status. For different SOCs, there have some
SOC specifical GPR register to set sleep on/off mode. So add these to
callback function for driver.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nimrod Andy [Wed, 24 Dec 2014 09:30:39 +0000 (17:30 +0800)]
net: fec: add Wake-on-LAN support
Support for Wake-on-LAN using Magic Packet. ENET IP supports sleep mode
in low power status, when system enter suspend status, Magic packet can
wake up system even if all SOC clocks are gate. The patch doing below things:
- flagging the device as a wakeup source for the system, as well as
its Wake-on-LAN interrupt
- prepare the hardware for entering WoL mode
- add standard ethtool WOL interface
- enable the ENET interrupt to wake us
Tested on i.MX6q/dl sabresd, sabreauto boards, i.MX6SX arm2 boards.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 31 Dec 2014 17:44:44 +0000 (09:44 -0800)]
Merge tag 'nios2-fixes-v3.19-rc3' of git://git.rocketboards.org/linux-socfpga-next
Pull arch/nios2 fixes from Ley Foon Tan:
- fix compilation error when enable CONFIG_PREEMPT
- initialize cpuinfo.mmu variable supplied by the device tree
* tag 'nios2-fixes-v3.19-rc3' of git://git.rocketboards.org/linux-socfpga-next:
nios2: Use preempt_schedule_irq
nios2: Initialize cpuinfo.mmu
Linus Torvalds [Wed, 31 Dec 2014 17:16:17 +0000 (09:16 -0800)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
"Fix a use-after-free crash in the user-space crypto API"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: af_alg - fix backlog handling
Tobias Klauser [Wed, 31 Dec 2014 02:53:11 +0000 (10:53 +0800)]
nios2: Use preempt_schedule_irq
Follow
aa0d53260596 ("ia64: Use preempt_schedule_irq") and use
preempt_schedule_irq instead of enabling/disabling interrupts and
messing around with PREEMPT_ACTIVE in the nios2 low-level preemption
code ourselves. Also get rid of the now needless re-check for
TIF_NEED_RESCHED, preempt_schedule_irq will already take care of
rescheduling.
This also fixes the following build error when building with
CONFIG_PREEMPT:
arch/nios2/kernel/built-in.o: In function `need_resched':
arch/nios2/kernel/entry.S:374: undefined reference to `PREEMPT_ACTIVE'
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Ley Foon Tan <lftan@altera.com>
Walter Goossens [Wed, 31 Dec 2014 01:29:07 +0000 (09:29 +0800)]
nios2: Initialize cpuinfo.mmu
This patch initializes the mmu field of the cpuinfo structure to the
value supplied by the devicetree.
Signed-off-by: Walter Goossens <waltergoossens@home.nl>
Acked-by: Ley Foon Tan <lftan@altera.com>
Linus Torvalds [Wed, 31 Dec 2014 01:13:13 +0000 (17:13 -0800)]
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"A very small set of fixes for 3.19, as everyone was out.
The clocksource patch was something I missed for the merge window
after the change that broke arm64 was merged through arm-soc. The
other two patches are a fix for an undetected merge problem in mvebu
and a defconfig change to make some exynos boards work with the normal
multi_v7_defconfig"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
Add USB_EHCI_EXYNOS to multi_v7_defconfig
ARM: mvebu: Fix pinctrl configuration for Armada 370 DB
clocksource: arch_timer: Only use the virtual counter (CNTVCT) on arm64
Linus Torvalds [Wed, 31 Dec 2014 01:04:56 +0000 (17:04 -0800)]
Merge tag 'fbdev-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
Pull fbdev fixes from Tomi Valkeinen:
- Fix regression with Nokia N900 display
- Fix crash on fbdev using freed __initdata logos
- Fix fb_deferred_io_fsync() return value.
* tag 'fbdev-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
OMAPDSS: SDI: fix output port_num
video/fbdev: fix defio's fsync
video/logo: prevent use of logos after they have been freed
OMAPDSS: pll: NULL dereference in error handling
OMAPDSS: HDMI: remove double initializer entries
Linus Torvalds [Wed, 31 Dec 2014 00:59:59 +0000 (16:59 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input layer fixes from Dmitry Torokhov:
"Fixes for v7 protocol for ALPS devices and few other driver fixes.
Also users can request input events to be stamped with boot time
timestamps, in addition to real and monotonic timestamps"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: hil_kbd - fix incorrect use of init_completion
Input: alps - v7: document the v7 touchpad packet protocol
Input: alps - v7: fix finger counting for > 2 fingers on clickpads
Input: alps - v7: sometimes a single touch is reported in mt[1]
Input: alps - v7: ignore new packets
Input: evdev - add CLOCK_BOOTTIME support
Input: psmouse - expose drift duration for IBM trackpoints
Input: stmpe - bias keypad columns properly
Input: stmpe - enforce device tree only mode
mfd: stmpe: add pull up/down register offsets for STMPE
Input: optimize events_per_packet count calculation
Input: edt-ft5x06 - fixed a macro coding style issue
Input: gpio_keys - replace timer and workqueue with delayed workqueue
Input: gpio_keys - allow separating gpio and irq in device tree
Jiri Kosina [Tue, 30 Dec 2014 22:52:20 +0000 (23:52 +0100)]
Revert "cfg80211: make WEXT compatibility unselectable"
This reverts commit
24a0aa212ee2dbe44360288684478d76a8e20a0a.
It's causing severe userspace breakage. Namely, all the utilities from
wireless-utils which are relying on CONFIG_WEXT (which means tools like
'iwconfig', 'iwlist', etc) are not working anymore. There is a 'iw'
utility in newer wireless-tools, which is supposed to be a replacement
for all the "deprecated" binaries, but it's far away from being
massively adopted.
Please see [1] for example of the userspace breakage this is causing.
In addition to that, Larry Finger reports [2] that this patch is also
causing ipw2200 driver being impossible to build.
To me this clearly shows that CONFIG_WEXT is far, far away from being
"deprecated enough" to be removed.
[1] http://thread.gmane.org/gmane.linux.kernel/
1857010
[2] http://thread.gmane.org/gmane.linux.network/343688
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kevin Hao [Wed, 24 Dec 2014 06:05:45 +0000 (14:05 +0800)]
net: gianfar: add missing __iomem annotation
Fix the following spare warning:
drivers/net/ethernet/freescale/gianfar.c:3521:60: warning: incorrect type in argument 1 (different address spaces)
drivers/net/ethernet/freescale/gianfar.c:3521:60: expected unsigned int [noderef] <asn:2>*addr
drivers/net/ethernet/freescale/gianfar.c:3521:60: got unsigned int [usertype] *rfbptr
drivers/net/ethernet/freescale/gianfar.c:205:16: warning: incorrect type in assignment (different address spaces)
drivers/net/ethernet/freescale/gianfar.c:205:16: expected unsigned int [usertype] *rfbptr
drivers/net/ethernet/freescale/gianfar.c:205:16: got unsigned int [noderef] <asn:2>*<noident>
drivers/net/ethernet/freescale/gianfar.c:2918:44: warning: incorrect type in argument 1 (different address spaces)
drivers/net/ethernet/freescale/gianfar.c:2918:44: expected unsigned int [noderef] <asn:2>*addr
drivers/net/ethernet/freescale/gianfar.c:2918:44: got unsigned int [usertype] *rfbptr
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kevin Hao [Wed, 24 Dec 2014 06:05:44 +0000 (14:05 +0800)]
net: gianfar: mark the local functions static
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Wang [Wed, 24 Dec 2014 03:03:52 +0000 (11:03 +0800)]
virtio-net: don't do header check for dodgy gso packets
There's no need to do header check for virtio-net since:
- Host sets dodgy for all gso packets from guest and check the header.
- Host should be prepared for all kinds of evil packets from guest, since
malicious guest can send any kinds of packet.
So this patch sets NETIF_F_GSO_ROBUST for virtio-net to skip the check.
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dmitry Eremin-Solenikov [Tue, 23 Dec 2014 22:14:14 +0000 (01:14 +0300)]
arm: sa1100: move irda header to linux/platform_data
In the end asm/mach/irda.h header is not used by anybody except sa1100.
Move the header to the platform data includes dir and rename it to
irda-sa11x0.h.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Fri, 26 Dec 2014 14:35:46 +0000 (15:35 +0100)]
net: sxgbe: Use setup_timer
Convert a call to init_timer and accompanying intializations of
the timer's data and function fields to a call to setup_timer.
A simplified version of the semantic match that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression t,f,d;
@@
-init_timer(&t);
+setup_timer(&t,f,d);
-t.function = f;
-t.data = d;
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Fri, 26 Dec 2014 14:35:42 +0000 (15:35 +0100)]
ksz884x: Use setup_timer
Convert a call to init_timer and accompanying intializations of
the timer's data and function fields to a call to setup_timer.
A simplified version of the semantic match that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression t,f,d;
@@
-init_timer(&t);
+setup_timer(&t,f,d);
-t.function = f;
-t.data = d;
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Fri, 26 Dec 2014 14:35:35 +0000 (15:35 +0100)]
atl1e: Use setup_timer
Convert a call to init_timer and accompanying intializations of
the timer's data and function fields to a call to setup_timer.
A simplified version of the semantic match that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression t,f,d;
@@
-init_timer(&t);
+setup_timer(&t,f,d);
-t.function = f;
-t.data = d;
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Fri, 26 Dec 2014 14:35:34 +0000 (15:35 +0100)]
atheros: atlx: Use setup_timer
Convert a call to init_timer and accompanying intializations of
the timer's data and function fields to a call to setup_timer.
A simplified version of the semantic match that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression t,f,d;
@@
-init_timer(&t);
+setup_timer(&t,f,d);
-t.function = f;
-t.data = d;
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 30 Dec 2014 23:30:00 +0000 (18:30 -0500)]
Merge branch 'timecounter'
Richard Cochran says:
====================
Time Counter fixes and improvements
Several PTP Hardware Clock (PHC) drivers implement the clock in
software using the timecounter/cyclecounter code. This series adds one
simple improvement and one more subtle fix to the shared timecounter
facility. Credit for this series goes to Janusz Użycki, who pointed
the issues out to me off list.
Patch #1 simply move the timecounter code into its own file. When
working on this series, it was really annoying to see half the kernel
recompile after every tweak to the timecounter stuff. There is no
reason to keep this together with the clocksource code.
Patch #2 implements an improved adjtime() method, and patches 3-10
convert all of the drivers over to the new method.
Patch #11 fixes a subtle but important issue with the timecounter WRT
frequency adjustment. As it stands now, a timecounter based PHC will
exhibit a variable frequency resolution (and variable time error)
depending on how often the clock is read.
In timecounter_read_delta(), the expression
(delta * cc->mult) >> cc->shift;
can lose resolution from the adjusted value of 'mult'. If the value
of 'delta' is too small, then small changes in 'mult' have no effect.
However, if the delta value is large enough, then small changes in
'mult' will have an effect.
Reading the clock too often means smaller 'delta' values which in turn
will spoil the fine adjustments made to 'mult'. Up until now, this
effect did not show up in my testing. The following example explains
why.
The CPTS has an input clock of 250 MHz, and the clock source uses
mult=0x80000000 and shift=29, making the ticks to nanoseconds
conversion like this:
ticks * 2^31
------------
2^29
Imagine what happens if the clock is read every 10 milliseconds. Ten
milliseconds are about
2500000 ticks, which corresponds to about 21
bits. The product in the numerator has then 52 bits. After the shift
operation, 23 bits are preserved. This results in a frequency
adjustment resolution of about 0.1 ppm (not _too_ bad.)
A frequency resolution of 1 ppm requires 20 bits.
A frequency resolution of 1 ppb requires 30 bits.
For the 250 MHz CPTS clock, reading every 4 seconds yields a 1 ppb
resolution (which is the finest that our API allows).
However, the error can be much higher if the clock is read too often
or if time stamps occur close in time to read operations. In general
it is really not acceptable to allow the rate of clock readings to
influence the clock accuracy.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:47:06 +0000 (19:47 +0100)]
timecounter: keep track of accumulated fractional nanoseconds
The current timecounter implementation will drop a variable amount
of resolution, depending on the magnitude of the time delta. In
other words, reading the clock too often or too close to a time
stamp conversion will introduce errors into the time values. This
patch fixes the issue by introducing a fractional nanosecond field
that accumulates the low order bits.
Reported-by: Janusz Użycki <j.uzycki@elproma.com.pl>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:47:05 +0000 (19:47 +0100)]
net: cpts: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:47:04 +0000 (19:47 +0100)]
net: mlx4: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.
Compile tested only.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:47:03 +0000 (19:47 +0100)]
net: ixgbe: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.
Compile tested only.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:47:02 +0000 (19:47 +0100)]
net: igb: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:47:01 +0000 (19:47 +0100)]
net: e1000e: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:47:00 +0000 (19:47 +0100)]
net: fec: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.
Compile tested only.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:46:59 +0000 (19:46 +0100)]
net: bnx2x: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.
Compile tested only.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:46:58 +0000 (19:46 +0100)]
net: xgbe: convert to timecounter adjtime.
This patch changes the driver to use the new and improved method
for adjusting the offset of a timecounter.
Compile tested only.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:46:57 +0000 (19:46 +0100)]
timecounter: provide a helper function to shift the time.
Some PTP Hardware Clock drivers use a struct timecounter to represent
their clock. To adjust the time by a given offset, these drivers all
perform a two step read/write of their timecounter. However, it is
better and simpler just to adjust the offset in one step. This patch
introduces a little routine to help drivers implement the adjtime
method.
Suggested-by: Janusz Użycki <j.uzycki@elproma.com.pl>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Sun, 21 Dec 2014 18:46:56 +0000 (19:46 +0100)]
time: move the timecounter/cyclecounter code into its own file.
The timecounter code has almost nothing to do with the clocksource
code. Let it live in its own file. This will help isolate the
timecounter users from the clocksource users in the source tree.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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