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2019-09-05powerpc/eeh: Clean up EEH PEs after recovery finishesOliver O'Halloran
When the last device in an eeh_pe is removed the eeh_pe structure itself (and any empty parents) are freed since they are no longer needed. This results in a crash when a hotplug driver is involved since the following may occur: 1. Device is suprise removed. 2. Driver performs an MMIO, which fails and queues and eeh_event. 3. Hotplug driver receives a hotplug interrupt and removes any pci_devs that were under the slot. 4. pci_dev is torn down and the eeh_pe is freed. 5. The EEH event handler thread processes the eeh_event and crashes since the eeh_pe pointer in the eeh_event structure is no longer valid. Crashing is generally considered poor form. Instead of doing that use the fact PEs are marked as EEH_PE_INVALID to keep them around until the end of the recovery cycle, at which point we can safely prune any empty PEs. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190903101605.2890-2-oohall@gmail.com
2019-09-04ARM: dts: aspeed-g5: Fixe gpio-ranges upper limitOscar A Perez
According to the AST2500/AST2520 specs, these SoCs support up to 228 GPIO pins. However, 'gpio-ranges' value in 'aspeed-g5.dtsi' file is currently setting the upper limit to 220 which isn't allowing access to all their GPIOs. The correct upper limit value is 232 (actual number is 228 plus a 4-GPIO hole in GPIOAB). Without this patch, GPIOs AC5 and AC6 do not work correctly on a AST2500 BMC running Linux Kernel v4.19 Fixes: 2039f90d136c ("ARM: dts: aspeed-g5: Add gpio controller to devicetree") Signed-off-by: Oscar A Perez <linux@neuralgames.com> Reviewed-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Joel Stanley <joel@jms.id.au>
2019-09-04ARM; dts: aspeed: mihawk: File should not be executableJoel Stanley
Remove the executable bit. Fixes: 0a1dcf954ece ("ARM: dts: aspeed: Add Mihawk BMC platform") Signed-off-by: Joel Stanley <joel@jms.id.au>
2019-09-04ARM: dts: aspeed: swift: Change power supplies to version 2Eddie James
Swift power supplies are version 2 of the IBM CFFPS. Fixes: 8e8fd0cbd7c5 ("ARM: dts: aspeed: Add Swift BMC machine") Signed-off-by: Eddie James <eajames@linux.ibm.com> Signed-off-by: Joel Stanley <joel@jms.id.au>
2019-09-04ARM: dts: aspeed: vesnin: Add secondary SPI flash chipIvan Mikhaylov
Adds secondary SPI flash chip into dts for vesnin. Signed-off-by: Ivan Mikhaylov <i.mikhaylov@yadro.com> Signed-off-by: Joel Stanley <joel@jms.id.au>
2019-09-04ARM: dts: aspeed: vesnin: Add wdt2 with alt-boot optionIvan Mikhaylov
Adds wdt2 section with 'alt-boot' option into dts for vesnin. Signed-off-by: Ivan Mikhaylov <i.mikhaylov@yadro.com> Signed-off-by: Joel Stanley <joel@jms.id.au>
2019-09-04ARM: dts: aspeed-g4: Add all flash chipsJoel Stanley
The FMC supports five chip selects, so describe the five possible flash chips. Reviewed-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Joel Stanley <joel@jms.id.au>
2019-09-04lsm: remove current_security()Paul Moore
There are no remaining callers and it really is unsafe in the brave new world of LSM stacking. Acked-by: James Morris <jamorris@linux.microsoft.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
2019-09-04selinux: fix residual uses of current_security() for the SELinux blobStephen Smalley
We need to use selinux_cred() to fetch the SELinux cred blob instead of directly using current->security or current_security(). There were a couple of lingering uses of current_security() in the SELinux code that were apparently missed during the earlier conversions. IIUC, this would only manifest as a bug if multiple security modules including SELinux are enabled and SELinux is not first in the lsm order. After this change, there appear to be no other users of current_security() in-tree; perhaps we should remove it altogether. Fixes: bbd3662a8348 ("Infrastructure management of the cred security blob") Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Reviewed-by: James Morris <jamorris@linux.microsoft.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
2019-09-05net-ipv6: fix excessive RTF_ADDRCONF flag on ::1/128 local route (and others)Maciej Żenczykowski
There is a subtle change in behaviour introduced by: commit c7a1ce397adacaf5d4bb2eab0a738b5f80dc3e43 'ipv6: Change addrconf_f6i_alloc to use ip6_route_info_create' Before that patch /proc/net/ipv6_route includes: 00000000000000000000000000000001 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000003 00000000 80200001 lo Afterwards /proc/net/ipv6_route includes: 00000000000000000000000000000001 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000002 00000000 80240001 lo ie. the above commit causes the ::1/128 local (automatic) route to be flagged with RTF_ADDRCONF (0x040000). AFAICT, this is incorrect since these routes are *not* coming from RA's. As such, this patch restores the old behaviour. Fixes: c7a1ce397ada ("ipv6: Change addrconf_f6i_alloc to use ip6_route_info_create") Cc: David Ahern <dsahern@gmail.com> Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Maciej Żenczykowski <maze@google.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05sctp: use transport pf_retrans in sctp_do_8_2_transport_strikeXin Long
Transport should use its own pf_retrans to do the error_count check, instead of asoc's. Otherwise, it's meaningless to make pf_retrans per transport. Fixes: 5aa93bcf66f4 ("sctp: Implement quick failover draft from tsvwg") Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05Merge branch 'net-dsa-mt7530-PHYLINK-and-port-5'David S. Miller
René van Dorst says: ==================== net: dsa: mt7530: Convert to PHYLINK and add support for port 5 1. net: dsa: mt7530: Convert to PHYLINK API This patch converts mt7530 to PHYLINK API. 2. dt-bindings: net: dsa: mt7530: Add support for port 5 3. net: dsa: mt7530: Add support for port 5 These 2 patches adding support for port 5 of the switch. v2->v3: * Removed 'status = "okay"' lines in patch #2 * Change a port 5 setup message in a debug message in patch #3 * Added ack-by and tested-by tags v1->v2: * Mostly phylink improvements after review. rfc -> v1: * Mostly phylink improvements after review. * Drop phy isolation patches. Adds no value for now. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net: dsa: mt7530: Add support for port 5René van Dorst
Adding support for port 5. Port 5 can muxed/interface to: - internal 5th GMAC of the switch; can be used as 2nd CPU port or as extra port with an external phy for a 6th ethernet port. - internal PHY of port 0 or 4; Used in most applications so that port 0 or 4 is the WAN port and interfaces with the 2nd GMAC of the SOC. Signed-off-by: René van Dorst <opensource@vdorst.com> Tested-by: Frank Wunderlich <frank-w@public-files.de> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05dt-bindings: net: dsa: mt7530: Add support for port 5René van Dorst
MT7530 port 5 has many modes/configurations. Update the documentation how to use port 5. Signed-off-by: René van Dorst <opensource@vdorst.com> Cc: devicetree@vger.kernel.org Cc: Rob Herring <robh@kernel.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net: dsa: mt7530: Convert to PHYLINK APIRené van Dorst
Convert mt7530 to PHYLINK API Signed-off-by: René van Dorst <opensource@vdorst.com> Tested-by: Frank Wunderlich <frank-w@public-files.de> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05r8152: modify rtl8152_set_speed functionHayes Wang
First, for AUTONEG_DISABLE, we only need to modify MII_BMCR. Second, add advertising parameter for rtl8152_set_speed(). Add RTL_ADVERTISED_xxx for advertising parameter of rtl8152_set_speed(). Then, the advertising settings from ethtool could be saved. Signed-off-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05rxrpc: Fix misplaced tracelineDavid Howells
There's a misplaced traceline in rxrpc_input_packet() which is looking at a packet that just got released rather than the replacement packet. Fix this by moving the traceline after the assignment that moves the new packet pointer to the actual packet pointer. Fixes: d0d5c0cd1e71 ("rxrpc: Use skb_unshare() rather than skb_cow_data()") Reported-by: Hillf Danton <hdanton@sina.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05Merge branch 'dpaa2-eth-Add-new-statistics-counters'David S. Miller
Ioana Radulescu says: ==================== dpaa2-eth: Add new statistics counters Recent firmware versions offer access to more DPNI statistics counters. Add the relevant ones to ethtool interface stats. Also we can now make use of a new counter for in flight egress frames to avoid sleeping an arbitrary amount of time in the ndo_stop routine. v2: in patch 2/3, treat separately the error case for unsupported statistics pages ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05dpaa2-eth: Poll Tx pending frames counter on if downIoana Radulescu
Starting with firmware version MC10.18.0, a new counter for in flight Tx frames is offered. Use it when bringing down the interface to determine when all pending Tx frames have been processed by hardware instead of sleeping a fixed amount of time. Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05dpaa2-eth: Add new DPNI statistics countersIoana Radulescu
Recent firmware versions expose more DPNI counters. Export relevant ones via ethtool -S. Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05dpaa2-eth: Minor refactoring in ethtool statsIoana Radulescu
As we prepare to read more pages from the DPNI stat counters, reorganize the code a bit to make it easier to extend. Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller
Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for net: 1) br_netfilter drops IPv6 packets if ipv6 is disabled, from Leonardo Bras. 2) nft_socket hits BUG() due to illegal skb->sk caching, patch from Fernando Fernandez Mancera. 3) nft_fib_netdev could be called with ipv6 disabled, leading to crash in the fib lookup, also from Leonardo. 4) ctnetlink honors IPS_OFFLOAD flag, just like nf_conntrack sysctl does. 5) Properly set up flowtable entry timeout, otherwise immediate removal by garbage collector might occur. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-04pm-graph: make setVal unbuffered again for python2 and python3Todd Brandt
sleepgraph: - kprobe_events won't set correctly if the data is buffered - force sysvals.setVal to be unbuffered and use binary mode - tested in both python2 and python3 Link: https://bugzilla.kernel.org/show_bug.cgi?id=204773 Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com> [ rjw: Subject ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-09-04software node: Initialize the return value in software_node_to_swnode()Heikki Krogerus
The software node is searched from a list that may be empty when the function is called. This makes sure that the function returns NULL even if the list is empty. Fixes: 80488a6b1d3c ("software node: Add support for static node descriptors") Reported-by: kbuild test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-09-04ext4: Reduce ext4 timestamp warningsDeepa Dinamani
When ext4 file systems were created intentionally with 128 byte inodes, the rate-limited warning of eventual possible timestamp overflow are still emitted rather frequently. Remove the warning for now. Discussion for whether any warning is needed, and where it should be emitted, can be found at https://lore.kernel.org/lkml/1567523922.5576.57.camel@lca.pw/. I can post a separate follow-up patch after the conclusion. Reported-by: Qian Cai <cai@lca.pw> Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Reviewed-by: Andreas Dilger <adilger@dilger.ca> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-04arm64: exynos: Enable exynos-chipid driverPankaj Dubey
Enable Exynos Chipid driver for accessing SoC related information. Link: https://lore.kernel.org/r/20190904175002.10487-6-krzk@kernel.org Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-04percpu: Use struct_size() helperGustavo A. R. Silva
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct pcpu_alloc_info { ... struct pcpu_group_info groups[]; }; Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. So, replace the following form: sizeof(*ai) + nr_groups * sizeof(ai->groups[0]) with: struct_size(ai, groups, nr_groups) This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Dennis Zhou <dennis@kernel.org>
2019-09-04configfs: provide exclusion between IO and removalsAl Viro
Make sure that attribute methods are not called after the item has been removed from the tree. To do so, we * at the point of no return in removals, grab ->frag_sem exclusive and mark the fragment dead. * call the methods of attributes with ->frag_sem taken shared and only after having verified that the fragment is still alive. The main benefit is for method instances - they are guaranteed that the objects they are accessing *and* all ancestors are still there. Another win is that we don't need to bother with extra refcount on config_item when opening a file - the item will be alive for as long as it stays in the tree, and we won't touch it/attributes/any associated data after it's been removed from the tree. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-09-04Merge tag 'samsung-soc-5.4-2' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/soc Samsung mach/soc changes for v5.4 1. Minor fixup in plat and mach code (S3C platforms), 2. Enable exynos-chipid driver to provide SoC related information, 3. Extend the patterns for Samsung maintainer entries to cover all important files. * tag 'samsung-soc-5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux: MAINTAINERS: Extend patterns for Samsung SoC, Security Subsystem and clock drivers ARM: s3c64xx: squash samsung_usb_phy.h into setup-usb-phy.c ARM: exynos: Enable exynos-chipid driver ARM: samsung: Include GPIO driver header Link: https://lore.kernel.org/r/20190904175002.10487-5-krzk@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-04Merge tag 'samsung-dt-5.4-2' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/dt Samsung DTS ARM changes for v5.4, part 2 1. Fix Exynos542x Chromebooks boot with multi_v7 defconfig, 2. Add GPU (Mali) support to Exynos5250 boards, 3. Minor cleanup for Exynos3250 ADC. * tag 'samsung-dt-5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux: ARM: dts: exynos: Enable GPU/Mali T604 on Arndale board ARM: dts: exynos: Enable GPU/Mali T604 on Chromebook Snow ARM: dts: exynos: Add GPU/Mali T604 node to Exynos5250 ARM: dts: exynos: Fix min/max buck4 for GPU on Arndale board ARM: dts: exynos: Mark LDO10 as always-on on Peach Pit/Pi Chromebooks ARM: dts: exynos: Remove not accurate secondary ADC compatible Link: https://lore.kernel.org/r/20190904175002.10487-4-krzk@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-04Merge tag 'samsung-drivers-5.4-2' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/drivers Samsung soc drivers changes for v5.4, part 2 Fixes and cleanups for recently introduced Exynos chipid driver. * tag 'samsung-drivers-5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux: soc: samsung: chipid: Select missing dependency for EXYNOS_CHIPID soc: samsung: chipid: Remove the regmap lookup error log soc: samsung: chipid: Fix memory leak in error path Link: https://lore.kernel.org/r/20190904175002.10487-3-krzk@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-04Merge tag 'samsung-defconfig-5.4' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/defconfig Samsung defconfig changes for v5.4 1. Enable AHCI platform driver on exynos defconfig for Exynos5250-based Arndale board, 2. Make Max77802 PMIC regulator driver a built-in on multi_v7 defconfig as it is essential early during boot. * tag 'samsung-defconfig-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux: ARM: multi_v7_defconfig: Make MAX77802 regulator driver built-in ARM: exynos_defconfig: Enable AHCI-platform SATA driver Link: https://lore.kernel.org/r/20190904175002.10487-2-krzk@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-04drm/mcde: Fix DSI transfersLinus Walleij
There were bugs in the DSI transfer (read and write) function as it was only tested with displays ever needing a single byte to be written. Fixed it up and tested so we can now write messages of up to 16 bytes and read up to 4 bytes from the display. Tested with a Sony ACX424AKP display: this display now self- identifies and can control backlight in command mode. Reported-by: kbuild test robot <lkp@intel.com> Fixes: 5fc537bfd000 ("drm/mcde: Add new driver for ST-Ericsson MCDE") Reviewed-by: Stephan Gerhold <stephan@gerhold.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190903170804.17053-1-linus.walleij@linaro.org
2019-09-04riscv: Add perf callchain supportMao Han
This patch add support for perf callchain sampling on riscv platforms. The return address of leaf function is retrieved from pt_regs as it is not saved in the outmost frame. Signed-off-by: Mao Han <han_mao@c-sky.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Greentime Hu <green.hu@gmail.com> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: linux-riscv <linux-riscv@lists.infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Guo Ren <guoren@kernel.org> Tested-by: Greentime Hu <greentime.hu@sifive.com> [paul.walmsley@sifive.com: fixed some 'checkpatch.pl --strict' issues; fixed patch description spelling] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
2019-09-04soc: ti: ti_sci_pm_domains: Add support for exclusive and shared accessLokesh Vutla
TISCI protocol supports for enabling the device either with exclusive permissions for the requesting host or with sharing across the hosts. There are certain devices which are exclusive to Linux context and there are certain devices that are shared across different host contexts. So add support for getting this information from DT by increasing the power-domain cells to 2. For keeping the DT backward compatibility intact, defaulting the device permissions to set the exclusive flag set. In this case the power-domain-cells is 1. Reviewed-by: Nishanth Menon <nm@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-04dt-bindings: ti_sci_pm_domains: Add support for exclusive and shared accessLokesh Vutla
TISCI protocol supports for enabling the device either with exclusive permissions for the requesting host or with sharing across the hosts. There are certain devices which are exclusive to Linux context and there are certain devices that are shared across different host contexts. So add support for getting this information from DT by increasing the power-domain cells to 2. Acked-by: Tero Kristo <t-kristo@ti.com> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Nishanth Menon <nm@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-04firmware: ti_sci: Allow for device shared and exclusive requestsLokesh Vutla
Sysfw provides an option for requesting exclusive access for a device using the flags MSG_FLAG_DEVICE_EXCLUSIVE. If this flag is not used, the device is meant to be shared across hosts. Once a device is requested from a host with this flag set, any request to this device from a different host will be nacked by sysfw. Current tisci driver enables this flag for every device requests. But this may not be true for all the devices. So provide a separate commands in driver for exclusive and shared device requests. Reviewed-by: Nishanth Menon <nm@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-04gfs2: Use async glocks for renameBob Peterson
Because s_vfs_rename_mutex is not cluster-wide, multiple nodes can reverse the roles of which directories are "old" and which are "new" for the purposes of rename. This can cause deadlocks where two nodes end up waiting for each other. There can be several layers of directory dependencies across many nodes. This patch fixes the problem by acquiring all gfs2_rename's inode glocks asychronously and waiting for all glocks to be acquired. That way all inodes are locked regardless of the order. The timeout value for multiple asynchronous glocks is calculated to be the total of the individual wait times for each glock times two. Since gfs2_exchange is very similar to gfs2_rename, both functions are patched in the same way. A new async glock wait queue, sd_async_glock_wait, keeps a list of waiters for these events. If gfs2's holder_wake function detects an async holder, it wakes up any waiters for the event. The waiter only tests whether any of its requests are still pending. Since the glocks are sent to dlm asychronously, the wait function needs to check to see which glocks, if any, were granted. If a glock is granted by dlm (and therefore held), its minimum hold time is checked and adjusted as necessary, as other glock grants do. If the event times out, all glocks held thus far must be dequeued to resolve any existing deadlocks. Then, if there are any outstanding locking requests, we need to loop around and wait for dlm to respond to those requests too. After we release all requests, we return -ESTALE to the caller (vfs rename) which loops around and retries the request. Node1 Node2 --------- --------- 1. Enqueue A Enqueue B 2. Enqueue B Enqueue A 3. A granted 6. B granted 7. Wait for B 8. Wait for A 9. A times out (since Node 1 holds A) 10. Dequeue B (since it was granted) 11. Wait for all requests from DLM 12. B Granted (since Node2 released it in step 10) 13. Rename 14. Dequeue A 15. DLM Grants A 16. Dequeue A (due to the timeout and since we no longer have B held for our task). 17. Dequeue B 18. Return -ESTALE to vfs 19. VFS retries the operation, goto step 1. This release-all-locks / acquire-all-locks may slow rename / exchange down as both nodes struggle in the same way and do the same thing. However, this will only happen when there is contention for the same inodes, which ought to be rare. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2019-09-04gfs2: create function gfs2_glock_update_hold_timeAndreas Gruenbacher
This patch moves the code that updates glock minimum hold time to a separate function. This will be called by a future patch. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Bob Peterson <rpeterso@redhat.com>
2019-09-04gfs2: separate holder for rgrps in gfs2_renameBob Peterson
Before this patch, gfs2_rename added a holder for the rgrp glock to its array of holders, ghs. There's nothing wrong with that, but this patch separates it into a separate holder. This is done to ensure it's always locked last as per the proper glock lock ordering, and also to pave the way for a future patch in which we will lock the non-rgrp glocks asynchronously. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2019-09-04gfs2: Delete an unnecessary check before brelse()Markus Elfring
The brelse() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. [The same applies to brelse() in gfs2_dir_no_add (which Coccinelle apparently missed), so fix that as well.] Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2019-09-04gfs2: Minor PAGE_SIZE arithmetic cleanupsAndreas Gruenbacher
Replace divisions by PAGE_SIZE with shifts by PAGE_SHIFT and similar. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2019-09-04Merge tag 'clk-renesas-for-v5.4-tag1' of ↵Stephen Boyd
git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-renesas Pull Renesas clk driver updates from Geert Uytterhoeven: - Fix "always-on" Clock Domains on R-Car M1A, RZ/A1, RZ/A2, and RZ/N1 * tag 'clk-renesas-for-v5.4-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers: clk: renesas: cpg-mssr: Set GENPD_FLAG_ALWAYS_ON for clock domain clk: renesas: r9a06g032: Set GENPD_FLAG_ALWAYS_ON for clock domain clk: renesas: mstp: Set GENPD_FLAG_ALWAYS_ON for clock domain dt-bindings: clk: emev2: Rename bindings documentation file clk: renesas: rcar-usb2-clock-sel: Use devm_platform_ioremap_resource() helper
2019-09-04Merge tag 'sunxi-clk-for-5.4-1' of ↵Stephen Boyd
https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-allwinner Pull Allwinner clock changes from Maxime Ripard: A few patches to enable the V3 SoC and fix the i2s clock for the H6. * tag 'sunxi-clk-for-5.4-1' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux: clk: sunxi-ng: h6: Allow I2S to change parent rate clk: sunxi-ng: v3s: add Allwinner V3 support clk: sunxi-ng: v3s: add missing clock slices for MMC2 module clocks dt-bindings: clk: sunxi-ccu: add compatible string for V3 CCU clk: sunxi-ng: v3s: add the missing PLL_DDR1
2019-09-04Merge tag 'nfs-for-5.3-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds
Pull NFS client bugfix from Trond Myklebust: "Regression fix inode fileid checks in attribute revalidation code" * tag 'nfs-for-5.3-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFS: Fix inode fileid checks in attribute revalidation code
2019-09-04hwmon: (lm75) Aproximate sample times to data-sheet valuesIker Perez del Palomar Sustatxa
Current sample time values are over estimated, this patches applies values closer to the ones defined in the data-sheets. Signed-off-by: Iker Perez del Palomar Sustatxa <iker.perez@codethink.co.uk> [groeck: resolved conflicts; use default conversion times] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-09-04Merge tag 'clk-imx-5.4' of ↵Stephen Boyd
git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into clk-imx Pull i.MX clock changes from Shawn Guo: - Add clock driver for i.MX8MN SoC - Switch i.MX8MM clock driver to platform driver - Add API for clk unregister when driver probe fail - Add Hifi4 DSP related clocks for i.MX8QXP SoC - Fix Audio PLL setting and parent clock for USB - Misc i.MX8 clock driver improvements and corrections * tag 'clk-imx-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (28 commits) clk: imx: imx8mn: fix audio pll setting clk: imx8mn: Add necessary frequency support for ARM PLL table clk: imx8mn: Add missing rate_count assignment for each PLL structure clk: imx8mn: fix int pll clk gate clk: imx8mn: Add GIC clock clk: imx8mn: Fix incorrect parents clk: imx8mm: Fix incorrect parents clk: imx8mq: Fix sys3 pll references clk: imx8mq: Unregister clks when of_clk_add_provider failed clk: imx8mm: Unregister clks when of_clk_add_provider failed clk: imx8mq: Mark AHB clock as critical clk: imx8mn: Keep uart clocks on for early console clk: imx: Remove unused function statement clk: imx7ulp: Make sure earlycon's clock is enabled clk: imx8mm: Switch to platform driver clk: imx: imx8mm: fix audio pll setting clk: imx8mm: GPT1 clock mux option #5 should be sys_pll1_80m clk: imx8mm: Fix typo of pwm3 clock's mux option #4 clk: imx: Remove unused clk based API clk: imx8mq: set correct parent for usb ctrl clocks ...
2019-09-04Merge tag 'clk-meson-v5.4-2' of https://github.com/BayLibre/clk-meson into ↵Stephen Boyd
clk-meson Pull second set of Amlogic clk driver updates from Jerome Brunet: - Add g12a reset support to the axg audio clock controller - Add sm1 support to the g12a clock controller * tag 'clk-meson-v5.4-2' of https://github.com/BayLibre/clk-meson: clk: meson: g12a: add support for SM1 CPU 1, 2 & 3 clocks clk: meson: g12a: add support for SM1 DynamIQ Shared Unit clock clk: meson: g12a: add support for SM1 GP1 PLL dt-bindings: clk: meson: add sm1 periph clock controller bindings clk: meson: axg-audio: add g12a reset support dt-bindings: clock: meson: add resets to the audio clock controller
2019-09-04sched/core: Fix uclamp ABI bug, clean up and robustify sched_read_attr() ABI ↵Ingo Molnar
logic and code Thadeu Lima de Souza Cascardo reported that 'chrt' broke on recent kernels: $ chrt -p $$ chrt: failed to get pid 26306's policy: Argument list too long and he has root-caused the bug to the following commit increasing sched_attr size and breaking sched_read_attr() into returning -EFBIG: a509a7cd7974 ("sched/uclamp: Extend sched_setattr() to support utilization clamping") The other, bigger bug is that the whole sched_getattr() and sched_read_attr() logic of checking non-zero bits in new ABI components is arguably broken, and pretty much any extension of the ABI will spuriously break the ABI. That's way too fragile. Instead implement the perf syscall's extensible ABI instead, which we already implement on the sched_setattr() side: - if user-attributes have the same size as kernel attributes then the logic is unchanged. - if user-attributes are larger than the kernel knows about then simply skip the extra bits, but set attr->size to the (smaller) kernel size so that tooling can (in principle) handle older kernel as well. - if user-attributes are smaller than the kernel knows about then just copy whatever user-space can accept. Also clean up the whole logic: - Simplify the code flow - there's no need for 'ret' for example. - Standardize on 'kattr/uattr' and 'ksize/usize' naming to make sure we always know which side we are dealing with. - Why is it called 'read' when what it does is to copy to user? This code is so far away from VFS read() semantics that the naming is actively confusing. Name it sched_attr_copy_to_user() instead, which mirrors other copy_to_user() functionality. - Move the attr->size assignment from the head of sched_getattr() to the sched_attr_copy_to_user() function. Nothing else within the kernel should care about the size of the structure. With these fixes the sched_getattr() syscall now nicely supports an extensible ABI in both a forward and backward compatible fashion, and will also fix the chrt bug. As an added bonus the bogus -EFBIG return is removed as well, which as Thadeu noted should have been -E2BIG to begin with. Reported-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Tested-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Acked-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Patrick Bellasi <patrick.bellasi@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: a509a7cd7974 ("sched/uclamp: Extend sched_setattr() to support utilization clamping") Link: https://lkml.kernel.org/r/20190904075532.GA26751@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-09-04ARM: dts: exynos: Enable GPU/Mali T604 on Arndale boardGuillaume Gardet
Tested with kmscube and some glmark2* tests on arndale board. Signed-off-by: Guillaume Gardet <guillaume.gardet@arm.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
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