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* Include qemu/module.h where needed, drop it from qemu-common.hMarkus Armbruster2019-06-121-2/+1Star
| | | | | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-4-armbru@redhat.com> [Rebased with conflicts resolved automatically, except for hw/usb/dev-hub.c hw/misc/exynos4210_rng.c hw/misc/bcm2835_rng.c hw/misc/aspeed_scu.c hw/display/virtio-vga.c hw/arm/stm32f205_soc.c; ui/cocoa.m fixed up]
* file-win32: Switch to byte-based callbacksEric Blake2018-05-151-3/+2Star
| | | | | | | | | | | | | | | | We are gradually moving away from sector-based interfaces, towards byte-based. Make the change for the last few sector-based callbacks in the file-win32 driver. Note that the driver was already using byte-based calls for performing actual I/O, so this just gets rid of a round trip of scaling; however, as I don't know if Windows is tolerant of non-sector AIO operations, I went with the conservative approach of modifying .bdrv_refresh_limits to override the block layer defaults back to the pre-patch value of 512. Signed-off-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: explicitly acquire aiocontext in aio callbacks that need itPaolo Bonzini2017-02-211-3/+0Star
| | | | | | | | | Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 20170213135235.12274-16-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: explicitly acquire aiocontext in callbacks that need itPaolo Bonzini2017-02-211-4/+6
| | | | | | | | | | | | This covers both file descriptor callbacks and polling callbacks, since they execute related code. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 20170213135235.12274-14-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* aio: add AioPollFn and io_poll() interfaceStefan Hajnoczi2017-01-031-2/+2
| | | | | | | | | | | | The new AioPollFn io_poll() argument to aio_set_fd_handler() and aio_set_event_handler() is used in the next patch. Keep this code change separate due to the number of files it touches. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 20161201192652.9509-3-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* linux-aio: share one LinuxAioState within an AioContextPaolo Bonzini2016-07-181-1/+1
| | | | | | | | | | | | | | | | | | This has better performance because it executes fewer system calls and does not use a bottom half per disk. Originally proposed by Ming Lei. [Changed #include "raw-aio.h" to "block/raw-aio.h" in win32-aio.c to fix build error as reported by Peter Maydell <peter.maydell@linaro.org>. --Stefan] Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1467650000-51385-1-git-send-email-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> squash! linux-aio: share one LinuxAioState within an AioContext
* block: Clean up includesPeter Maydell2016-01-201-0/+1
| | | | | | | | | | | Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* aio: Add "is_external" flag for event handlersFam Zheng2015-10-231-2/+3
| | | | | | | | | | All callers pass in false, and the real external ones will switch to true in coming patches. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Rename BlockDriverCompletionFunc to BlockCompletionFuncMarkus Armbruster2014-10-201-1/+1
| | | | | | | | | | I'll use it with block backends shortly, and the name is going to fit badly there. It's a block layer thing anyway, not just a block driver thing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Rename BlockDriverAIOCB* to BlockAIOCB*Markus Armbruster2014-10-201-2/+2
| | | | | | | | | | I'll use BlockDriverAIOCB with block backends shortly, and the name is going to fit badly there. It's a block layer thing anyway, not just a block driver thing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Rename qemu_aio_release -> qemu_aio_unrefFam Zheng2014-09-221-2/+2
| | | | | | Suggested-by: Benoît Canet <benoit.canet@irqsave.net> Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* win32-aio: Drop win32_aiocb_info.cancelFam Zheng2014-09-221-14/+0Star
| | | | | Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* raw-win32: Handle failure for potentially large allocationsKevin Wolf2014-08-151-1/+5
| | | | | | | | | | | Some code in the block layer makes potentially huge allocations. Failure is not completely unexpected there, so avoid aborting qemu and handle out-of-memory situations gracefully. This patch addresses the allocations in the raw-win32 block driver. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* block/raw-win32: implement .bdrv_detach/attach_aio_context()Stefan Hajnoczi2014-06-041-4/+17
| | | | | | | | | | | | Drop the assumption that we're using the main AioContext for raw-win32. Convert the aio-win32 code to support detach/attach and replace qemu_aio_wait() with aio_poll(). The .bdrv_detach/attach_aio_context() interfaces move the aio-win32 event notifier from the old to the new AioContext. Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* block/raw-win32: create one QEMUWin32AIOState per BDRVRawStateStefan Hajnoczi2014-06-041-0/+8
| | | | | | | | | | | | Each QEMUWin32AIOState event notifier is associated with an AioContext. Since BlockDriverState instances can use different AioContexts we cannot continue to use a global QEMUWin32AIOState. Let each BDRVRawState have its own QEMUWin32AIOState and free it when BDRVRawState is closed. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* win32-aio: drop win32_aio_flush_cb()Stefan Hajnoczi2013-08-221-9/+1Star
| | | | | | | | | | The io_flush argument to qemu_aio_set_event_notifier() has been removed since the block layer learnt to drain requests by itself. Fix the Windows build for win32-aio.o by updating the qemu_aio_set_event_notifier() call and dropping win32_aio_flush_cb(). Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* Remove twice include of qemu-common.hQiao Nuohan2013-05-181-1/+0Star
| | | | | | | | | This patch is used to remove twice include of "qemu-common.h" in block/win32-aio.c Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* win32-aio: use iov utility functions instead of open-coding themMichael Tokarev2013-01-181-14/+3Star
| | | | | | | We have iov_from_buf() and iov_to_buf(), use them instead of open-coding these in block/win32-aio.c Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* win32-aio: Fix memory leakKevin Wolf2013-01-171-1/+1
| | | | | | | | | The buffer is allocated for both reads and writes, and obviously it should be freed even if an error occurs. Cc: qemu-stable@nongnu.org Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* win32-aio: Fix vectored readsKevin Wolf2013-01-171-1/+1
| | | | | | | | Copying data in the right direction really helps a lot! Cc: qemu-stable@nongnu.org Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* win32-aio: Fix how win32_aio_process_completion() frees bufferMarkus Armbruster2013-01-151-1/+1
| | | | | | | | | win32_aio_submit() allocates it with qemu_blockalign(), therefore it must be freed with qemu_vfree(), not g_free(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* misc: move include files to include/qemu/Paolo Bonzini2012-12-191-3/+3
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* block: move include files to include/block/Paolo Bonzini2012-12-191-2/+2
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* aio: rename AIOPool to AIOCBInfoStefan Hajnoczi2012-11-141-2/+2
| | | | | | | | | Now that AIOPool no longer keeps a freelist, it isn't really a "pool" anymore. Rename it to AIOCBInfo and make it const since it no longer needs to be modified. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Workaround for older versions of MinGW gccStefan Weil2012-11-141-5/+5
| | | | | | | | | | | | | Versions before gcc-4.6 don't support unnamed fields in initializers (see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=10676). Offset and OffsetHigh belong to an unnamed struct which is part of an unnamed union. Therefore the original code does not work with older versions of gcc. Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* raw-win32: implement native asynchronous I/OPaolo Bonzini2012-10-311-0/+226
With the new support for EventNotifiers in the AIO event loop, we can hook a completion port to every opened file and use asynchronous I/O on them. Wine's support is extremely inefficient, also because it really does the I/O synchronously on regular files. (!) But it works, and it is good to keep the Win32 and POSIX ports as similar as possible. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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