- 21 Sep, 2020 17 commits
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Chuck Lever authored
Time to remove dprintk call sites in here. Regarding the rpc_bind_status tracepoint: It's friendlier to administrators if they don't have to look up the error code to figure out what went wrong. Replace trace_rpc_bind_status with a set of tracepoints that report more specifically what the problem was, and what RPC program/version was being queried. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
Clean up. When enabled, this dprintk adds a line in /var/log/messages after every RPC that reports the task ID (no connection to on the wire XID values) and the RPC's result (no connection to the program, operation, or the arguments and results). Thus it's value is pretty low. Let's remove it. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
Clean up: Replace dprintk call sites. Note that rpc_call_rpcerror() already has a trace point, so perhaps adding trace_rpc_refresh_status() isn't necessary. However, it does report a particular category of error. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
For a long while we've wanted a tracepoint that fires when a major timeout is reported in the system log. Such a tracepoint can be attached to other actions that can take place when a timeout is detected (eg, server or connection health assessment). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
The original purpose of this expensive call is to prevent a long queue of requests from blocking other work. The cond_resched() call is unnecessary after just a single send operation. For longer queues, instead of invoking the kernel scheduler, simply release the transport send lock and return to the RPC scheduler. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
This trace event can be used to audit transport connections from the client. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
Clean up: The rpc_rpc_request tracepoint serves the same purpose. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
Clean up: The rpc_task_run_action tracepoint serves the same purpose. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
"no socket space" is an exceptional and infrequent condition that troubleshooters want to know about. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
Generate a trace event when an RPC request is queued without being sent immediately. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
Replace a dprintk() with a tracepoint. The tracepoint marks the point where an RPC request is assigned an XID. Additional clean up: Remove trace_xprt_enq_xmit, which reports much the same thing. That tracepoint was added for debugging commit 918f3c1f ("SUNRPC: Improve latency for interactive tasks"). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
These instruments don't appear to add any substantial value. We already have this at the termination of each RPC: iozone-2617 [002] 975.713126: rpc_stats_latency: task:418@5 xid=0x260eab5d nfsv3 LOOKUP backlog=15 rtt=32 execute=58 iozone-2617 [002] 975.713127: xprt_release_cong: task:418@5 snd_task:4294967295 cong=256 cwnd=16384 iozone-2617 [002] 975.713127: xprt_put_cong: task:418@5 snd_task:4294967295 cong=0 cwnd=16384 Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
Introduce a tracepoint in call_allocate that reports the exact sizes in the RPC buffer allocation request and the status of the result. This helps catch problems with XDR buffer provisioning, and replaces transport-specific debugging instrumentation. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chuck Lever authored
Request completion is already recorded by an "rpc_task_wakeup queue=xprt_pending" trace record. A subsequent rpc_xdr_recvfrom trace record shows the number of bytes received. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Olga Kornievskaia authored
Current behaviour: every time a v3 operation is re-sent to the server we update (double) the timeout. There is no distinction between whether or not the previous timer had expired before the re-sent happened. Here's the scenario: 1. Client sends a v3 operation 2. Server RST-s the connection (prior to the timeout) (eg., connection is immediately reset) 3. Client re-sends a v3 operation but the timeout is now 120sec. As a result, an application sees 2mins pause before a retry in case server again does not reply. Where as if a connection reset didn't change the timeout value, the client would have re-tried (the 3rd time) after 60secs. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Chengguang Xu authored
The variable error is ssize_t, which is signed and will cast to unsigned when comapre with variable size, so add a check to avoid unexpected result in case of negative value of error. Signed-off-by: Chengguang Xu <cgxu519@mykernel.net> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Colin Ian King authored
The pointer clnt is being initialized with a value that is never read and so this is assignment redundant and can be removed. The pointer can removed because it is being used as a temporary variable and it is clearer to make the direct assignment and remove it completely. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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- 20 Sep, 2020 20 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull syscall tracing fix from Borislav Petkov: "Fix the seccomp syscall rewriting so that trace and audit see the rewritten syscall number, from Kees Cook" * tag 'core_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: core/entry: Report syscall correctly for trace and audit
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull objtool fix from Borislav Petkov: "Fix noreturn detection for ignored sibling functions (Josh Poimboeuf)" * tag 'objtool_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Fix noreturn detection for ignored functions
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fixes from Borislav Petkov: "Two fixes from the locking/urgent pile: - Fix lockdep's detection of "USED" <- "IN-NMI" inversions (Peter Zijlstra) - Make percpu-rwsem operations on the semaphore's ->read_count IRQ-safe because it can be used in an IRQ context (Hou Tao)" * tag 'locking_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/percpu-rwsem: Use this_cpu_{inc,dec}() for read_count locking/lockdep: Fix "USED" <- "IN-NMI" inversions
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull EFI fix from Borislav Petkov: "Ensure that the EFI bootloader control module only probes successfully on systems that support the EFI SetVariable runtime service" [ Tag and commit from Ard Biesheuvel, forwarded by Borislav ] * tag 'efi-urgent-for-v5.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi: efibc: check for efivars write capability
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Borislav Petkov: - A defconfig fix (Daniel Díaz) - Disable relocation relaxation for the compressed kernel when not built as -pie as in that case kernels built with clang and linked with LLD fail to boot due to the linker optimizing some instructions in non-PIE form; the gory details in the commit message (Arvind Sankar) - A fix for the "bad bp value" warning issued by the frame-pointer unwinder (Josh Poimboeuf) * tag 'x86_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/unwind/fp: Fix FP unwinding in ret_from_fork x86/boot/compressed: Disable relocation relaxation x86/defconfigs: Explicitly unset CONFIG_64BIT in i386_defconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm fixes from Dan Williams: "A handful of fixes to address a string of mistakes in the mechanism for device-mapper to determine if its component devices are dax capable. - Fix an original bug in device-mapper table reference counting when interrogating dax capability in the component device. This bug was hidden by the following bug. - Fix device-mapper to use the proper helper (dax_supported() instead of the leaf helper generic_fsdax_supported()) to determine dax operation of a stacked block device configuration. The original implementation is only valid for one level of dax-capable block device stacking. This bug was discovered while fixing the below regression. - Fix an infinite recursion regression introduced by broken attempts to quiet the generic_fsdax_supported() path and make it bail out before logging "dax capability not found" errors" * tag 'libnvdimm-fixes-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: dax: Fix stack overflow when mounting fsdax pmem device dm: Call proper helper to determine dax support dm/dax: Fix table reference counts
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linuxLinus Torvalds authored
Pull RISC-V fixes from Palmer Dabbelt: - A fix for a lockdep issue to avoid an asserting triggering during early boot. There shouldn't be any incorrect behavior as the system isn't concurrent at the time. - The addition of a missing fence when installing early fixmap mappings. - A corretion to the K210 device tree's interrupt map. - A fix for M-mode timer handling on the K210. * tag 'riscv-for-linus-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: RISC-V: Resurrect the MMIO timer implementation for M-mode systems riscv: Fix Kendryte K210 device tree riscv: Add sfence.vma after early page table changes RISC-V: Take text_mutex in ftrace_init_nop()
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB/Thunderbolt fixes from Greg KH: "Here are some small USB and one Thunderbolt driver fixes. Nothing major at all, just some fixes for reported issues, and a quirk addition: - typec fixes - UAS disconnect fix - usblp race fix - ehci-hcd modversions build fix - ignore wakeup quirk table addition - thunderbolt DROM read fix All of these have been in linux-next with no reported issues" * tag 'usb-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usblp: fix race between disconnect() and read() ehci-hcd: Move include to keep CRC stable usb: typec: intel_pmc_mux: Handle SCU IPC error conditions USB: quirks: Add USB_QUIRK_IGNORE_REMOTE_WAKEUP quirk for BYD zhaoxin notebook USB: UAS: fix disconnect by unplugging a hub usb: typec: ucsi: Prevent mode overrun usb: typec: ucsi: acpi: Increase command completion timeout value thunderbolt: Retry DROM read once if parsing fails
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds authored
Pull tty/serial/fbcon fixes from Greg KH: "Here are some small tty/serial and one more fbcon fix. They include: - serial core locking regression fixes - new device ids for 8250_pci driver - fbcon fix for syzbot found issue All have been in linux-next with no reported issues" * tag 'tty-5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: fbcon: Fix user font detection test at fbcon_resize(). serial: 8250_pci: Add Realtek 816a and 816b serial: core: fix console port-lock regression serial: core: fix port-lock initialisation
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/rasLinus Torvalds authored
Pull EDAC fixes from Borislav Petkov: "Two fixes for resulting from CONFIG_DEBUG_TEST_DRIVER_REMOVE=y experiments: - complete a previous fix to reset a local structure containing scanned system data properly so that the driver rescans, as it should, on a second load. - address a refcount underflow due to not paying attention to the driver whitelest on unregister" * tag 'edac_urgent_for_v5.9_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: EDAC/ghes: Check whether the driver is on the safe list correctly EDAC/ghes: Clear scanned data on unload
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input fixes from Dmitry Torokhov: "Just a couple of driver quirks" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: trackpoint - add new trackpoint variant IDs Input: i8042 - add Entroware Proteus EL07R4 to nomux and reset lists
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Linus Torvalds authored
Sedat Dilek pointed out some silly comment typo issues. Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
Merge tag 'kbuild-fixes-v5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: "Fix qconf warnings and revive help message" * tag 'kbuild-fixes-v5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kconfig: qconf: revive help message in the info view kconfig: qconf: fix incomplete type 'struct gstr' warning kconfig: qconf: use delete[] instead of delete to free array (again)
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Adrian Huang authored
When mounting fsdax pmem device, commit 6180bb44 ("dax: fix detection of dax support for non-persistent memory block devices") introduces the stack overflow [1][2]. Here is the call path for mounting ext4 file system: ext4_fill_super bdev_dax_supported __bdev_dax_supported dax_supported generic_fsdax_supported __generic_fsdax_supported bdev_dax_supported The call path leads to the infinite calling loop, so we cannot call bdev_dax_supported() in __generic_fsdax_supported(). The sanity checking of the variable 'dax_dev' is moved prior to the two bdev_dax_pgoff() checks [3][4]. [1] https://lore.kernel.org/linux-nvdimm/1420999447.1004543.1600055488770.JavaMail.zimbra@redhat.com/ [2] https://lore.kernel.org/linux-nvdimm/alpine.LRH.2.02.2009141131220.30651@file01.intranet.prod.int.rdu2.redhat.com/ [3] https://lore.kernel.org/linux-nvdimm/CA+RJvhxBHriCuJhm-D8NvJRe3h2MLM+ZMFgjeJjrRPerMRLvdg@mail.gmail.com/ [4] https://lore.kernel.org/linux-nvdimm/20200903160608.GU878166@iweiny-DESK2.sc.intel.com/ Fixes: 6180bb44 ("dax: fix detection of dax support for non-persistent memory block devices") Reported-by: Yi Zhang <yi.zhang@redhat.com> Reported-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Adrian Huang <ahuang12@lenovo.com> Reviewed-by: Jan Kara <jack@suse.cz> Tested-by: Ritesh Harjani <riteshh@linux.ibm.com> Cc: Coly Li <colyli@suse.de> Cc: Ira Weiny <ira.weiny@intel.com> Cc: John Pittman <jpittman@redhat.com> Link: https://lore.kernel.org/r/20200917111549.6367-1-adrianhuang0701@gmail.comSigned-off-by: Dan Williams <dan.j.williams@intel.com>
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Jan Kara authored
DM was calling generic_fsdax_supported() to determine whether a device referenced in the DM table supports DAX. However this is a helper for "leaf" device drivers so that they don't have to duplicate common generic checks. High level code should call dax_supported() helper which that calls into appropriate helper for the particular device. This problem manifested itself as kernel messages: dm-3: error: dax access failed (-95) when lvm2-testsuite run in cases where a DM device was stacked on top of another DM device. Fixes: 7bf7eac8 ("dax: Arrange for dax_supported check to span multiple devices") Cc: <stable@vger.kernel.org> Tested-by: Adrian Huang <ahuang12@lenovo.com> Signed-off-by: Jan Kara <jack@suse.cz> Acked-by: Mike Snitzer <snitzer@redhat.com> Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/r/160061715195.13131.5503173247632041975.stgit@dwillia2-desk3.amr.corp.intel.comSigned-off-by: Dan Williams <dan.j.williams@intel.com>
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Dan Williams authored
A recent fix to the dm_dax_supported() flow uncovered a latent bug. When dm_get_live_table() fails it is still required to drop the srcu_read_lock(). Without this change the lvm2 test-suite triggers this warning: # lvm2-testsuite --only pvmove-abort-all.sh WARNING: lock held when returning to user space! 5.9.0-rc5+ #251 Tainted: G OE ------------------------------------------------ lvm/1318 is leaving the kernel with locks still held! 1 lock held by lvm/1318: #0: ffff9372abb5a340 (&md->io_barrier){....}-{0:0}, at: dm_get_live_table+0x5/0xb0 [dm_mod] ...and later on this hang signature: INFO: task lvm:1344 blocked for more than 122 seconds. Tainted: G OE 5.9.0-rc5+ #251 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:lvm state:D stack: 0 pid: 1344 ppid: 1 flags:0x00004000 Call Trace: __schedule+0x45f/0xa80 ? finish_task_switch+0x249/0x2c0 ? wait_for_completion+0x86/0x110 schedule+0x5f/0xd0 schedule_timeout+0x212/0x2a0 ? __schedule+0x467/0xa80 ? wait_for_completion+0x86/0x110 wait_for_completion+0xb0/0x110 __synchronize_srcu+0xd1/0x160 ? __bpf_trace_rcu_utilization+0x10/0x10 __dm_suspend+0x6d/0x210 [dm_mod] dm_suspend+0xf6/0x140 [dm_mod] Fixes: 7bf7eac8 ("dax: Arrange for dax_supported check to span multiple devices") Cc: <stable@vger.kernel.org> Cc: Jan Kara <jack@suse.cz> Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@redhat.com> Reported-by: Adrian Huang <ahuang12@lenovo.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Tested-by: Adrian Huang <ahuang12@lenovo.com> Link: https://lore.kernel.org/r/160045867590.25663.7548541079217827340.stgit@dwillia2-desk3.amr.corp.intel.comSigned-off-by: Dan Williams <dan.j.williams@intel.com>
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Masahiro Yamada authored
Since commit 68fd110b ("kconfig: qconf: remove redundant help in the info view"), the help message is no longer displayed. I intended to drop duplicated "Symbol:", "Type:", but precious info about help and reverse dependencies was lost too. Revive it now. "defined at" is contained in menu_get_ext_help(), so I made sure to not display it twice. Fixes: 68fd110b ("kconfig: qconf: remove redundant help in the info view") Reported-by: Maxim Levitsky <mlevitsk@redhat.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Masahiro Yamada authored
"make HOSTCXX=clang++ xconfig" reports the following: HOSTCXX scripts/kconfig/qconf.o In file included from scripts/kconfig/qconf.cc:23: In file included from scripts/kconfig/lkc.h:15: scripts/kconfig/lkc_proto.h:26:13: warning: 'get_relations_str' has C-linkage specified, but returns incomplete type 'struct gstr' which could be incompatible with C [-Wreturn-type-c-linkage] struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head); ^ Currently, get_relations_str() is declared before the struct gstr definition. Move all declarations of menu.c functions below. BTW, some are declared in lkc.h and some in lkc_proto.h, but the difference is unclear. I guess some refactoring is needed. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Boris Kolpackov <boris@codesynthesis.com>
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Linus Torvalds authored
Merge fixes from Andrew Morton: "15 patches. Subsystems affected by this patch series: mailmap, mm/hotfixes, mm/thp, mm/memory-hotplug, misc, kcsan" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: kcsan: kconfig: move to menu 'Generic Kernel Debugging Instruments' fs/fs-writeback.c: adjust dirtytime_interval_handler definition to match prototype stackleak: let stack_erasing_sysctl take a kernel pointer buffer ftrace: let ftrace_enable_sysctl take a kernel pointer buffer mm/memory_hotplug: drain per-cpu pages again during memory offline selftests/vm: fix display of page size in map_hugetlb mm/thp: fix __split_huge_pmd_locked() for migration PMD kprobes: fix kill kprobe which has been marked as gone tmpfs: restore functionality of nr_inodes=0 mlock: fix unevictable_pgs event counts on THP mm: fix check_move_unevictable_pages() on THP mm: migration of hugetlbfs page skip memcg ksm: reinstate memcg charge on copied pages mailmap: add older email addresses for Kees Cook
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- 19 Sep, 2020 3 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "Another bunch of fixes for I2C. Jean's i801 patch is a cleanup on top of Volker's i801 patch, but it will make dependency handling much easier if those two go together" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: mxs: use MXS_DMA_CTRL_WAIT4END instead of DMA_CTRL_ACK i2c: mediatek: Send i2c master code at more than 1MHz i2c: mediatek: Fix generic definitions for bus frequency i2c: core: Call i2c_acpi_install_space_handler() before i2c_acpi_register_devices() i2c: i801: Simplify the suspend callback i2c: i801: Fix resume bug i2c: aspeed: Mask IRQ status to relevant bits
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Palmer Dabbelt authored
The K210 doesn't implement rdtime in M-mode, and since that's where Linux runs in the NOMMU systems that means we can't use rdtime. The K210 is the only system that anyone is currently running NOMMU or M-mode on, so here we're just inlining the timer read directly. This also adds the CLINT driver as an !MMU dependency, as it's currently the only timer driver availiable for these systems and without it we get a build failure for some configurations. Tested-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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Damien Le Moal authored
The Kendryte K210 SoC CLINT is compatible with Sifive clint v0 (sifive,clint0). Fix the Kendryte K210 device tree clint entry to be inline with the sifive timer definition documented in Documentation/devicetree/bindings/timer/sifive,clint.yaml. The device tree clint entry is renamed similarly to u-boot device tree definition to improve compatibility with u-boot defined device tree. To ensure correct initialization, the interrup-cells attribute is added and the interrupt-extended attribute definition fixed. This fixes boot failures with Kendryte K210 SoC boards. Note that the clock referenced is kept as K210_CLK_ACLK, which does not necessarilly match the clint MTIME increment rate. This however does not seem to cause any problem for now. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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