- 15 2月, 2017 3 次提交
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由 Stephen Hemminger 提交于
Make the event handling tasklet per channel rather than per-cpu. This allows for better fairness when getting lots of data on the same cpu. Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Stephen Hemminger 提交于
The hv_context structure had several arrays which were per-cpu and was allocating small structures (tasklet_struct). Instead use a single per-cpu array. Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Stephen Hemminger 提交于
The callback is done via tasklet not workqueue. Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 10 2月, 2017 37 次提交
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由 Martijn Coenen 提交于
This patch introduces a new binder_fd_array object, that allows us to support one or more file descriptors embedded in a buffer that is scatter-gathered. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Martijn Coenen <maco@google.com> Cc: Arve Hjønnevåg <arve@android.com> Cc: Amit Pundir <amit.pundir@linaro.org> Cc: Serban Constantinescu <serban.constantinescu@arm.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Rom Lemarchand <romlem@google.com> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: NMartijn Coenen <maco@google.com> Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Martijn Coenen 提交于
Previously all data passed over binder needed to be serialized, with the exception of Binder objects and file descriptors. This patchs adds support for scatter-gathering raw memory buffers into a binder transaction, avoiding the need to first serialize them into a Parcel. To remain backwards compatibile with existing binder clients, it introduces two new command ioctls for this purpose - BC_TRANSACTION_SG and BC_REPLY_SG. These commands may only be used with the new binder_transaction_data_sg structure, which adds a field for the total size of the buffers we are scatter-gathering. Because memory buffers may contain pointers to other buffers, we allow callers to specify a parent buffer and an offset into it, to indicate this is a location pointing to the buffer that we are fixing up. The kernel will then take care of fixing up the pointer to that buffer as well. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Martijn Coenen <maco@google.com> Cc: Arve Hjønnevåg <arve@android.com> Cc: Amit Pundir <amit.pundir@linaro.org> Cc: Serban Constantinescu <serban.constantinescu@arm.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Rom Lemarchand <romlem@google.com> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: NMartijn Coenen <maco@google.com> [jstultz: Fold in small fix from Amit Pundir <amit.pundir@linaro.org>] Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Martijn Coenen 提交于
The binder_buffer allocator currently only allocates space for the data and offsets buffers of a Parcel. This change allows for requesting an additional chunk of data in the buffer, which can for example be used to hold additional meta-data about the transaction (eg a security context). Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Martijn Coenen <maco@google.com> Cc: Arve Hjønnevåg <arve@android.com> Cc: Amit Pundir <amit.pundir@linaro.org> Cc: Serban Constantinescu <serban.constantinescu@arm.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Rom Lemarchand <romlem@google.com> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: NMartijn Coenen <maco@google.com> Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Martijn Coenen 提交于
Moved handling of fixup for binder objects, handles and file descriptors into separate functions. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Martijn Coenen <maco@google.com> Cc: Arve Hjønnevåg <arve@android.com> Cc: Amit Pundir <amit.pundir@linaro.org> Cc: Serban Constantinescu <serban.constantinescu@arm.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Rom Lemarchand <romlem@google.com> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: NMartijn Coenen <maco@google.com> Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Martijn Coenen 提交于
Add a new module parameter 'devices', that can be used to specify the names of the binder device nodes we want to populate in /dev. Each device node has its own context manager, and is therefore logically separated from all the other device nodes. The config option CONFIG_ANDROID_BINDER_DEVICES can be used to set the default value of the parameter. This approach was favored over using IPC namespaces, mostly because we require a single process to be a part of multiple binder contexts, which seemed harder to achieve with namespaces. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Martijn Coenen <maco@google.com> Cc: Arve Hjønnevåg <arve@android.com> Cc: Amit Pundir <amit.pundir@linaro.org> Cc: Serban Constantinescu <serban.constantinescu@arm.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Rom Lemarchand <romlem@google.com> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: NMartijn Coenen <maco@google.com> [jstultz: minor checkpatch warning fix] Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Martijn Coenen 提交于
Properly print the context in debugfs entries. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Martijn Coenen <maco@google.com> Cc: Arve Hjønnevåg <arve@android.com> Cc: Amit Pundir <amit.pundir@linaro.org> Cc: Serban Constantinescu <serban.constantinescu@arm.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Rom Lemarchand <romlem@google.com> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: NMartijn Coenen <maco@google.com> Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Martijn Coenen 提交于
Move the context manager state into a separate struct context, and allow for each process to have its own context associated with it. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Martijn Coenen <maco@google.com> Cc: Arve Hjønnevåg <arve@android.com> Cc: Amit Pundir <amit.pundir@linaro.org> Cc: Serban Constantinescu <serban.constantinescu@arm.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Rom Lemarchand <romlem@google.com> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: NMartijn Coenen <maco@google.com> [jstultz: Minor checkpatch fix] Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Martijn Coenen 提交于
flat_binder_object is used for both handling binder objects and file descriptors, even though the two are mostly independent. Since we'll have more fixup objects in binder in the future, instead of extending flat_binder_object again, split out file descriptors to their own object while retaining backwards compatibility to existing user-space clients. All binder objects just share a header. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Martijn Coenen <maco@google.com> Cc: Arve Hjønnevåg <arve@android.com> Cc: Amit Pundir <amit.pundir@linaro.org> Cc: Serban Constantinescu <serban.constantinescu@arm.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Rom Lemarchand <romlem@google.com> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: NMartijn Coenen <maco@google.com> Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Dmitry Torokhov 提交于
There is no need for the driver to use private workqueue, standard system workqueue should suffice as they are going to use the same worker pool anyway. Acked-by: NRobin van der Gracht <robin@protonic.nl> Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Dmitry Torokhov 提交于
This patch fixes following issues in input device (keypad) handling: - requesting IRQ before allocating and initializing parts of the device that can be referenced from IRQ handler is racy, even if we try to disable interrupt after requesting it. Let's move allocations around so that everything is ready by the time we request IRQ. - using threaded interrupt handler to schedule a work item it sub-optimal. Disabling and then re-enabling interrupts in work item and in open/close methods is prone to races and exactly the reason theraded interrupts were introduced. Let's use the infrastructure properly and keep scanning the matrix array in IRQ thread, stopping when there are no keys, or when told to do so. Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com> Tested-by: NRobin van der Gracht <robin@protonic.nl> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Dmitry Torokhov 提交于
'fbdev' is allocated as part of larger ht16k33_priv structure; trying to free it will cause troubles. Acked-by: NRobin van der Gracht <robin@protonic.nl> Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 K. Y. Srinivasan 提交于
The hypercall page only needs to be executable but currently it is setup to be writable as well. Fix the issue. Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Cc: <stable@vger.kernel.org> Acked-by: NKees Cook <keescook@chromium.org> Reported-by: NStephen Hemminger <stephen@networkplumber.org> Tested-by: NStephen Hemminger <stephen@networkplumber.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Stephen Hemminger 提交于
Since sendpacket no longer uses kickq argument remove it. Remove it no longer used xmit_more in sendpacket in netvsc as well. Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Stephen Hemminger 提交于
The explicit signal policy is no longer used. A different mechanism will be added later when xmit_more is supported. Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Stephen Hemminger 提交于
The flag to cause notification of host is unused after commit a01a291a282f7c2e ("Drivers: hv: vmbus: Base host signaling strictly on the ring state"). Therefore remove it from the ring buffer internal API. Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Stephen Hemminger 提交于
Use standard kernel operations for find first set bit to traverse the channel bit array. This has added benefit of speeding up lookup on 64 bit and because it uses find first set instruction. Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 K. Y. Srinivasan 提交于
Fix a typo. Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Vitaly Kuznetsov 提交于
With TimeSync version 4 protocol support we started updating system time continuously through the whole lifetime of Hyper-V guests. Every 5 seconds there is a time sample from the host which triggers do_settimeofday[64](). While the time from the host is very accurate such adjustments may cause issues: - Time is jumping forward and backward, some applications may misbehave. - In case an NTP server runs in parallel and uses something else for time sync (network, PTP,...) system time will never converge. - Systemd starts annoying you by printing "Time has been changed" every 5 seconds to the system log. Instead of doing in-kernel time adjustments offload the work to an NTP client by exposing TimeSync messages as a PTP device. Users may now decide what they want to use as a source. I tested the solution with chrony, the config was: refclock PHC /dev/ptp0 poll 3 dpoll -2 offset 0 The result I'm seeing is accurate enough, the time delta between the guest and the host is almost always within [-10us, +10us], the in-kernel solution was giving us comparable results. I also tried implementing PPS device instead of PTP by using not currently used Hyper-V synthetic timers (we use only one of four for clockevent) but with PPS source only chrony wasn't able to give me the required accuracy, the delta often more that 100us. Signed-off-by: NVitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Vitaly Kuznetsov 提交于
As a preparation to implementing Hyper-V PTP device supporting .getcrosststamp we need to export a reference to the current Hyper-V clocksource in use (MSR or TSC page). Signed-off-by: NVitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 K. Y. Srinivasan 提交于
Fix the bug in the generation of the guest ID. Without this fix the host side telemetry code is broken. Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com> Fixes: 352c9624 ("Drivers: hv: vmbus: Move the definition of generate_guest_id()") Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
Currently the periodic scan timer is used for three purposes, entangling keypad and display handling, which are both optional: 1. Scanning the keypad, 2. Flashing the backlight when a key is pressed, 3. Disabling temporary backlighting after a fixed period of time. Abstract the second purpose using a new lcd_poke() function. Make the non-periodic temporary backlight handling independent from keypad handling by converting it to a delayed workqueue. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
Add a helper function to move the cursor to the home position, so callers no longer need access to internal state. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
panel_detach() already verified that pptr is a valid pointer. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
All 18 suboptions related to the panel driver have individual dependencies on PANEL. Replace them by a single "if PANEL / endif # PANEL" section for easier dependency management. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
As of commit 7c5763b8 ("drivers: misc: Remove MISC_DEVICES config option"), misc device support no longer needs to be enabled manually. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
These definitions were never used in any publicly available version since (at least) 2004. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
Hardcoded driver versions are so pre-git. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
LCD_FLAG_F is the font flag, LCD_FLAG_N is the two-lines flag. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Wei Yongjun 提交于
module_w1_family() makes the code simpler by eliminating boilerplate code. Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com> Acked-by: NMaciej S. Szmigiero <mail@maciej.szmigiero.name> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Wei Yongjun 提交于
Use kmemdup rather than duplicating its implementation. Generated by: scripts/coccinelle/api/memdup.cocci Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com> Acked-by: NMaciej S. Szmigiero <mail@maciej.szmigiero.name> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Jason Gunthorpe 提交于
This allows the driver to avoid a high order coherent DMA allocation and memory copy. With this patch it can DMA directly from the kernel pages that the bitfile is stored in. Since this is now a gather DMA operation the driver uses the ISR to feed the chips DMA queue with each entry from the SGL. Signed-off-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Acked-by: NMoritz Fischer <moritz.fischer@ettus.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Jason Gunthorpe 提交于
Requiring contiguous kernel memory is not a good idea, this is a limited resource and allocation can fail under normal work loads. This introduces a .write_sg op that supporting drivers can provide to DMA directly from dis-contiguous memory and a new entry point fpga_mgr_buf_load_sg that users can call to directly provide page lists. The full matrix of compatibility is provided, either the linear or sg interface can be used by the user with a driver supporting either interface. A notable change for drivers is that the .write op can now be called multiple times. Signed-off-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Acked-by: NAlan Tull <atull@opensource.altera.com> Acked-by: NMoritz Fischer <moritz.fischer@ettus.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Jason Gunthorpe 提交于
There is no sense in sending a bitstream we know will not work, and with the variety of options for bitstream generation in Xilinx tools it is not terribly clear what the correct input should be. This is particularly important for Zynq since auto-correction was removed from the driver and the Zynq hardware only accepts a bitstream format that is different from what the Xilinx tools typically produce. Worse, the hardware provides no indication why the bitstream fails, it simply times out if the input is wrong. The best option here is to have the kernel print a message informing the user they are using a malformed bistream and programming failure isn't for any of the myriad of other reasons. Signed-off-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Acked-by: NMoritz Fischer <moritz.fischer@ettus.com> Acked-by: NAlan Tull <atull@opensource.altera.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Jason Gunthorpe 提交于
The completion did not check the interrupt status to see if any error bits were asserted, check error bits and dump some registers if things went wrong. A few fixes are needed to make this work, the IXR_ERROR_FLAGS_MASK was wrong, it included the done bits, which shows a bug in mask/unmask_irqs which were using the wrong bits, simplify all of this stuff. Signed-off-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: NMoritz Fischer <moritz.fischer@ettus.com> Acked-by: NAlan Tull <atull@opensource.altera.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Alexander Usyskin 提交于
Parallel reads from multiple threads on a file descriptor are not well defined and racy. It is safer to return to original behavior and simply fail the additional read. The solution is to remove request for next read credit. Cc: <stable@vger.kernel.org> #4.9 Fixes: ff1586a7 ("mei: enqueue consecutive reads") Signed-off-by: NAlexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: NTomas Winkler <tomas.winkler@intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Jeremy Kerr 提交于
Driver bind to devices based on the engine types & (optional) versions. Signed-off-by: NJeremy Kerr <jk@ozlabs.org> Signed-off-by: NChris Bostic <cbostic@us.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Jeremy Kerr 提交于
Add structs for fsi devices & drivers, and struct device conversion functions. Signed-off-by: NJeremy Kerr <jk@ozlabs.org> Signed-off-by: NChris Bostic <cbostic@us.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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