- 03 Jan, 2015 10 commits
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David S. Miller authored
Thomas Graf says: ==================== rhashtable: Per bucket locks & deferred table resizing Prepares for and introduces per bucket spinlocks and deferred table resizing. This allows for parallel table mutations in different hash buckets from atomic context. The resizing occurs in the background in a separate worker thread while lookups, inserts, and removals can continue. Also modified the chain linked list to be terminated with a special nulls marker to allow entries to move between multiple lists. Last but not least, reintroduces lockless netlink_lookup() with deferred Netlink socket destruction to avoid the side effect of increased netlink_release() runtime. ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Thomas Graf authored
Defers the release of the socket reference using call_rcu() to allow using an RCU read-side protected call to rhashtable_lookup() This restores behaviour and performance gains as previously introduced by e341694e ("netlink: Convert netlink_lookup() to use RCU protected hash table") without the side effect of severely delayed socket destruction. Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Thomas Graf authored
In order to allow for wider usage of rhashtable, use a special nulls marker to terminate each chain. The reason for not using the existing nulls_list is that the prev pointer usage would not be valid as entries can be linked in two different buckets at the same time. The 4 nulls base bits can be set through the rhashtable_params structure like this: struct rhashtable_params params = { [...] .nulls_base = (1U << RHT_BASE_SHIFT), }; This reduces the hash length from 32 bits to 27 bits. Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Thomas Graf authored
Introduces an array of spinlocks to protect bucket mutations. The number of spinlocks per CPU is configurable and selected based on the hash of the bucket. This allows for parallel insertions and removals of entries which do not share a lock. The patch also defers expansion and shrinking to a worker queue which allows insertion and removal from atomic context. Insertions and deletions may occur in parallel to it and are only held up briefly while the particular bucket is linked or unzipped. Mutations of the bucket table pointer is protected by a new mutex, read access is RCU protected. In the event of an expansion or shrinking, the new bucket table allocated is exposed as a so called future table as soon as the resize process starts. Lookups, deletions, and insertions will briefly use both tables. The future table becomes the main table after an RCU grace period and initial linking of the old to the new table was performed. Optimization of the chains to make use of the new number of buckets follows only the new table is in use. The side effect of this is that during that RCU grace period, a bucket traversal using any rht_for_each() variant on the main table will not see any insertions performed during the RCU grace period which would at that point land in the future table. The lookup will see them as it searches both tables if needed. Having multiple insertions and removals occur in parallel requires nelems to become an atomic counter. Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Thomas Graf authored
Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Thomas Graf authored
The removal function of nft_hash currently stores a reference to the previous element during lookup which is used to optimize removal later on. This was possible because a lock is held throughout calling rhashtable_lookup() and rhashtable_remove(). With the introdution of deferred table resizing in parallel to lookups and insertions, the nftables lock will no longer synchronize all table mutations and the stored pprev may become invalid. Removing this optimization makes removal slightly more expensive on average but allows taking the resize cost out of the insert and remove path. Signed-off-by:
Thomas Graf <tgraf@suug.ch> Cc: netfilter-devel@vger.kernel.org Signed-off-by:
David S. Miller <davem@davemloft.net>
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Thomas Graf authored
Subsequent patches will require access to the bucket tail. Access to the tail is relatively cheap as the automatic resizing of the table should keep the number of entries per bucket to no more than 0.75 on average. Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Thomas Graf authored
This patch is in preparation to introduce per bucket spinlocks. It extends all iterator macros to take the bucket table and bucket index. It also introduces a new rht_dereference_bucket() to handle protected accesses to buckets. It introduces a barrier() to the RCU iterators to the prevent the compiler from caching the first element. The lockdep verifier is introduced as stub which always succeeds and properly implement in the next patch when the locks are introduced. Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Thomas Graf authored
Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Thomas Graf authored
Hash the key inside of rhashtable_lookup_compare() like rhashtable_lookup() does. This allows to simplify the hashing functions and keep them private. Signed-off-by:
Thomas Graf <tgraf@suug.ch> Cc: netfilter-devel@vger.kernel.org Signed-off-by:
David S. Miller <davem@davemloft.net>
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- 02 Jan, 2015 21 commits
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David S. Miller authored
Richard Cochran says: ==================== Fixing the "Time Counter fixes and improvements" For this series I had only tested the build with ARCH=x86 and arm, but others like sparc64, microblaze, powerpc, and s390 will fail because they somehow don't indirectly include clocksource.h for the drivers in question. This series fixes the build issues reported by: kbuild test robot <fengguang.wu@intel.com> ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
The timecounter/cyclecounter code has moved, so users need the new include. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
This driver uses the function, clocksource_khz2mult, and so it really must include clocksource.h. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Richard Cochran authored
There is no need for users of the timecounter/cyclecounter code to include clocksource.h just for a single macro. Signed-off-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Pravin B Shelar authored
OVS development is moved to netdev mailing list. Update tree and list in MAINTAINERS file. Signed-off-by:
Pravin B Shelar <pshelar@nicira.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Merge tag 'wireless-drivers-next-for-davem-2015-01-02' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next Changes: * ath9k: enable Transmit Power Control (TPC) for ar9003 chips * rtlwifi: cleanup and updates from the vendor driver * rsi: fix memory leak related to firmware image * ath: parameter fix for FCC DFS pattern Signed-off-by:
David S. Miller <davem@davemloft.net>
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Rickard Strandqvist authored
Removes some functions that are not used anywhere: enic_dev_enable2_done() enic_dev_enable2() enic_dev_deinit_done() enic_dev_init_prov2() enic_vnic_dev_deinit() 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>
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Rickard Strandqvist authored
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>
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Rickard Strandqvist authored
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>
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Rickard Strandqvist authored
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>
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Florian Westphal authored
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>
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David S. Miller authored
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>
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Joe Stringer authored
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>
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Jesse Gross authored
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>
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Shaohui Xie authored
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>
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Shaohui Xie authored
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>
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Shaohui Xie authored
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>
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- 01 Jan, 2015 7 commits
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David S. Miller authored
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>
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Roger Chen authored
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>
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Roger Chen authored
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>
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Roger Chen authored
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>
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Roger Chen authored
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>
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Roger Chen authored
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>
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Roger Chen authored
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>
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- 31 Dec, 2014 2 commits
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David S. Miller authored
Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Signed-off-by:
David S. Miller <davem@davemloft.net>
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