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* kva_alloc/free: Use void * instead of vm_offset_tJohn Baldwin2026-04-231-3/+2
| | | | | | | Effort: CHERI upstreaming Reviewed by: kib Sponsored by: AFRL, DARPA Pull Request: https://github.com/freebsd/freebsd-src/pull/2068
* pmap_qenter/qremove: Use void * instead of vm_offset_tJohn Baldwin2026-04-231-2/+2
| | | | | | | Effort: CHERI upstreaming Reviewed by: kib Sponsored by: AFRL, DARPA Pull Request: https://github.com/freebsd/freebsd-src/pull/2068
* sf_buf_kva: Return a pointer instead of a vm_offset_tJohn Baldwin2026-04-231-1/+1
| | | | | | | | | This removes the need for several casts to pointer in callers. Effort: CHERI upstreaming Reviewed by: kib Sponsored by: AFRL, DARPA Pull Request: https://github.com/freebsd/freebsd-src/pull/2068
* drm2/ttm: Add missing includes to fix arm TEGRA124 buildJessica Clarke2025-05-311-1/+3
| | | | Fixes: bcd85e0150c9 ("vm_page: make iter_insert() public")
* vm_page: make iter_insert() publicDoug Moore2025-05-091-3/+6
| | | | | | | | | In places where vm_page_insert() is used after lookups, or for consecutive pages, use vm_page_iter_insert instead, to exploit locality. Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D50248
* vm_lowmem: Fix signature mismatches in vm_lowmem callbacksSHENGYI HONG2025-03-051-1/+1
| | | | | | | This is required for kernel CFI. Reviewed by: rrs, jhb, glebius Differential Revision: https://reviews.freebsd.org/D49111
* device_pager: user iterators to free device pagesDoug Moore2024-11-211-17/+3
| | | | | | | | | | | Change cdev_mgtdev_page_free_page to take an iterator, rather than an object and page, so that removing the page from the object radix tree can take advantage of locality with iterators. Define a general-purpose function to free all pages, which can be used in several places. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D47692
* drm2: Stop checking for failures from malloc(M_WAITOK)Zhenlei Huang2024-09-031-5/+0
| | | | | MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D45852
* dev_pager: define free_page for mgt devicesDoug Moore2024-08-211-1/+1
| | | | | | | | | Callers of cdev_pager_free_page in the kernel always have object->type == OBJT_MGTDEVICE. Define a function for them to call that skips the runtime type check in cdev_pager_free. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D46389
* Avoid waiting on physical allocations that can't possibly be satisfiedJason A. Harmening2023-12-242-5/+8
| | | | | | | | | | | | | | | | | | | | | | | - Change vm_page_reclaim_contig[_domain] to return an errno instead of a boolean. 0 indicates a successful reclaim, ENOMEM indicates lack of available memory to reclaim, with any other error (currently only ERANGE) indicating that reclamation is impossible for the specified address range. Change all callers to only follow up with vm_page_wait* in the ENOMEM case. - Introduce vm_domainset_iter_ignore(), which marks the specified domain as unavailable for further use by the iterator. Use this function to ignore domains that can't possibly satisfy a physical allocation request. Since WAITOK allocations run the iterators repeatedly, this avoids the possibility of infinitely spinning in domain iteration if no available domain can satisfy the allocation request. PR: 274252 Reported by: kevans Tested by: kevans Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D42706
* drm2: whack set-but-not-used warnsMateusz Guzik2023-09-182-2/+2
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* sys: Remove $FreeBSD$: one-line .c patternWarner Losh2023-08-1612-24/+0
| | | | Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
* sys: Remove $FreeBSD$: one-line .c comment patternWarner Losh2023-08-169-9/+0
| | | | Remove /^/[*/]\s*\$FreeBSD\$.*\n/
* pmap_unmapdev/bios: Accept a pointer instead of a vm_offset_t.John Baldwin2022-09-221-4/+4
| | | | | | | | This matches the return type of pmap_mapdev/bios. Reviewed by: kib, markj Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D36548
* Convert consumers to vm_page_alloc_noobj_contig()Mark Johnston2021-10-202-9/+8
| | | | | | | | | Remove now-unneeded page zeroing. No functional change intended. Reviewed by: alc, hselasky, kib MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D32006
* Convert vm_page_alloc() callers to use vm_page_alloc_noobj().Mark Johnston2021-10-201-6/+1
| | | | | | | | | | | | | | | Remove page zeroing code from consumers and stop specifying VM_ALLOC_NOOBJ. In a few places, also convert an allocation loop to simply use VM_ALLOC_WAITOK. Similarly, convert vm_page_alloc_domain() callers. Note that callers are now responsible for assigning the pindex. Reviewed by: alc, hselasky, kib MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D31986
* Convert a few triviail consumers to the new unlocked grab API.Jeff Roberson2020-02-281-5/+4
| | | | | | | | Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D23847 Notes: svn path=/head/; revision=358447
* Make page busy state deterministic on free. Pages must be xbusy whenJeff Roberson2019-12-221-0/+2
| | | | | | | | | | | | | | | | | | | removed from objects including calls to free. Pages must not be xbusy when freed and not on an object. Strengthen assertions to match these expectations. In practice very little code had to change busy handling to meet these rules but we can now make stronger guarantees to busy holders and avoid conditionally dropping busy in free. Refine vm_page_remove() and vm_page_replace() semantics now that we have stronger guarantees about busy state. This removes redundant and potentially problematic code that has proliferated. Discussed with: markj Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D22822 Notes: svn path=/head/; revision=356002
* (4/6) Protect page valid with the busy lock.Jeff Roberson2019-10-152-2/+2
| | | | | | | | | | | | | | Atomics are used for page busy and valid state when the shared busy is held. The details of the locking protocol and valid and dirty synchronization are in the updated vm_page.h comments. Reviewed by: kib, markj Tested by: pho Sponsored by: Netflix, Intel Differential Revision: https://reviews.freebsd.org/D21594 Notes: svn path=/head/; revision=353539
* Replace redundant code with a few new vm_page_grab facilities:Jeff Roberson2019-09-102-17/+8
| | | | | | | | | | | | | | - VM_ALLOC_NOCREAT will grab without creating a page. - vm_page_grab_valid() will grab and page in if necessary. - vm_page_busy_acquire() automates some busy acquire loops. Discussed with: alc, kib, markj Tested by: pho (part of larger branch) Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D21546 Notes: svn path=/head/; revision=352176
* Use the sleepq lock rather than the page lock to protect against wakeupJeff Roberson2019-09-101-4/+1
| | | | | | | | | | | | | races with page busy state. The object lock is still used as an interlock to ensure that the identity stays valid. Most callers should use vm_page_sleep_if_busy() to handle the locking particulars. Reviewed by: alc, kib, markj Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D21255 Notes: svn path=/head/; revision=352174
* Change synchonization rules for vm_page reference counting.Mark Johnston2019-09-093-7/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are several mechanisms by which a vm_page reference is held, preventing the page from being freed back to the page allocator. In particular, holding the page's object lock is sufficient to prevent the page from being freed; holding the busy lock or a wiring is sufficent as well. These references are protected by the page lock, which must therefore be acquired for many per-page operations. This results in false sharing since the page locks are external to the vm_page structures themselves and each lock protects multiple structures. Transition to using an atomically updated per-page reference counter. The object's reference is counted using a flag bit in the counter. A second flag bit is used to atomically block new references via pmap_extract_and_hold() while removing managed mappings of a page. Thus, the reference count of a page is guaranteed not to increase if the page is unbusied, unmapped, and the object's write lock is held. As a consequence of this, the page lock no longer protects a page's identity; operations which move pages between objects are now synchronized solely by the objects' locks. The vm_page_wire() and vm_page_unwire() KPIs are changed. The former requires that either the object lock or the busy lock is held. The latter no longer has a return value and may free the page if it releases the last reference to that page. vm_page_unwire_noq() behaves the same as before; the caller is responsible for checking its return value and freeing or enqueuing the page as appropriate. vm_page_wire_mapped() is introduced for use in pmap_extract_and_hold(). It fails if the page is concurrently being unmapped, typically triggering a fallback to the fault handler. vm_page_wire() no longer requires the page lock and vm_page_unwire() now internally acquires the page lock when releasing the last wiring of a page (since the page lock still protects a page's queue state). In particular, synchronization details are no longer leaked into the caller. The change excises the page lock from several frequently executed code paths. In particular, vm_object_terminate() no longer bounces between page locks as it releases an object's pages, and direct I/O and sendfile(SF_NOCACHE) completions no longer require the page lock. In these latter cases we now get linear scalability in the common scenario where different threads are operating on different files. __FreeBSD_version is bumped. The DRM ports have been updated to accomodate the KPI changes. Reviewed by: jeff (earlier version) Tested by: gallatin (earlier version), pho Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D20486 Notes: svn path=/head/; revision=352110
* Add a return value to vm_page_remove().Mark Johnston2019-06-261-1/+1
| | | | | | | | | | | | | | | | | | Use it to indicate whether the page may be safely freed following its removal from the object. Also change vm_page_remove() to assume that the page's object pointer is non-NULL, and have callers perform this check instead. This is a step towards an implementation of an atomic reference counter for each physical page structure. Reviewed by: alc, dougm, kib MFC after: 1 week Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D20758 Notes: svn path=/head/; revision=349432
* Replace uses of vm_page_unwire(m, PQ_NONE) with vm_page_unwire_noq(m).Mark Johnston2019-06-071-1/+1
| | | | | | | | | | | | | | | These calls are not the same in general: the former will dequeue the page if it is enqueued, while the latter will just leave it alone. But, all existing uses of the former apply to unmanaged pages, which are never enqueued in the first place. No functional change intended. Reviewed by: kib MFC after: 1 week Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D20470 Notes: svn path=/head/; revision=348785
* Include eventhandler.h in more compilation unitsConrad Meyer2019-05-211-0/+1
| | | | | | | | | | | | | | | | This was enumerated with exhaustive search for sys/eventhandler.h includes, cross-referenced against EVENTHANDLER_* usage with the comm(1) utility. Manual checking was performed to avoid redundant includes in some drivers where a common os_bsd.h (for example) included sys/eventhandler.h indirectly, but it is possible some of these are redundant with driver-specific headers in ways I didn't notice. (These CUs did not show up as missing eventhandler.h in tinderbox.) X-MFC-With: r347984 Notes: svn path=/head/; revision=348026
* Revert drm2 removal.Warner Losh2018-08-2421-0/+10112
| | | | | | | | | | | | | | | | | | | | | | | | | | | Revert r338177, r338176, r338175, r338174, r338172 After long consultations with re@, core members and mmacy, revert these changes. Followup changes will be made to mark them as deprecated and prent a message about where to find the up-to-date driver. Followup commits will be made to make this clear in the installer. Followup commits to reduce POLA in ways we're still exploring. It's anticipated that after the freeze, this will be removed in 13-current (with the residual of the drm2 code copied to sys/arm/dev/drm2 for the TEGRA port's use w/o the intel or radeon drivers). Due to the impending freeze, there was no formal core vote for this. I've been talking to different core members all day, as well as Matt Macey and Glen Barber. Nobody is completely happy, all are grudgingly going along with this. Work is in progress to mitigate the negative effects as much as possible. Requested by: re@ (gjb, rgrimes) Notes: svn path=/head/; revision=338285
* Remove legacy drm and drm2 from treeMatt Macy2018-08-2221-10112/+0
| | | | | | | | | | | | | | | | | As discussed on the MLs drm2 conflicts with the ports' version and there is no upstream for most if not all of drm. Both have been merged in to a single port. Users on powerpc, 32-bit hardware, or with GPUs predating Radeon and i915 will need to install the graphics/drm-legacy-kmod. All other users should be able to use one of the LinuxKPI-based ports: graphics/drm-stable-kmod, graphics/drm-next-kmod, graphics/drm-devel-kmod. MFC: never Approved by: core@ Notes: svn path=/head/; revision=338172
* vm_wait() rework.Konstantin Belousov2018-02-202-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Make vm_wait() take the vm_object argument which specifies the domain set to wait for the min condition pass. If there is no object associated with the wait, use curthread' policy domainset. The mechanics of the wait in vm_wait() and vm_wait_domain() is supplied by the new helper vm_wait_doms(), which directly takes the bitmask of the domains to wait for passing min condition. Eliminate pagedaemon_wait(). vm_domain_clear() handles the same operations. Eliminate VM_WAIT and VM_WAITPFAULT macros, the direct functions calls are enough. Eliminate several control state variables from vm_domain, unneeded after the vm_wait() conversion. Scetched and reviewed by: jeff Tested by: pho Sponsored by: The FreeBSD Foundation, Mellanox Technologies Differential revision: https://reviews.freebsd.org/D14384 Notes: svn path=/head/; revision=329636
* Don't bother enqueuing a page immediately before freeing it.Mark Johnston2017-05-181-1/+1
| | | | | | | | | No functional change intended. MFC after: 1 week Notes: svn path=/head/; revision=318479
* Fix a few uses of kern_yield() in the TTM and the LinuxKPI.Mark Johnston2017-05-181-2/+2
| | | | | | | | | | | | | | kern_yield(0) effectively causes the calling thread to be rescheduled immediately since it resets the thread's priority to the highest possible value. This can cause livelocks when the pattern "while (!trylock()) kern_yield(0);" is used since the thread holding the lock may linger on the runqueue for the CPU on which the looping thread is running. MFC after: 1 week Notes: svn path=/head/; revision=318478
* Allow DRM2 code to be built on platforms without AGP.Michal Meloun2016-11-131-1/+2
| | | | | | | | | | This patch is taken from original drm-3.8 code. Differential Revision: https://reviews.freebsd.org/D8454 MFC after: 3 weeks Notes: svn path=/head/; revision=308612
* Fix a race in vm_page_busy_sleep(9).Konstantin Belousov2016-10-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Suppose that we have an exclusively busy page, and a thread which can accept shared-busy page. In this case, typical code waiting for the page xbusy state to pass is again: VM_OBJECT_WLOCK(object); ... if (vm_page_xbusied(m)) { vm_page_lock(m); VM_OBJECT_WUNLOCK(object); <---1 vm_page_busy_sleep(p, "vmopax"); goto again; } Suppose that the xbusy state owner locked the object, unbusied the page and unlocked the object after we are at the line [1], but before we executed the load of the busy_lock word in vm_page_busy_sleep(). If it happens that there is still no waiters recorded for the busy state, the xbusy owner did not acquired the page lock, so it proceeded. More, suppose that some other thread happen to share-busy the page after xbusy state was relinquished but before the m->busy_lock is read in vm_page_busy_sleep(). Again, that thread only needs vm_object lock to proceed. Then, vm_page_busy_sleep() reads busy_lock value equal to the VPB_SHARERS_WORD(1). In this case, all tests in vm_page_busy_sleep(9) pass and we are going to sleep, despite the page being share-busied. Update check for m->busy_lock == VPB_UNBUSIED in vm_page_busy_sleep(9) to also accept shared-busy state if we only wait for the xbusy state to pass. Merge sequential if()s with the same 'then' clause in vm_page_busy_sleep(). Note that the current code does not share-busy pages from parallel threads, the only way to have more that one sbusy owner is right now is to recurse. Reported and tested by: pho (previous version) Reviewed by: alc, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D8196 Notes: svn path=/head/; revision=307218
* sys/dev: minor spelling fixes.Pedro F. Giffuni2016-05-031-2/+2
| | | | | | | Most affect comments, very few have user-visible effects. Notes: svn path=/head/; revision=298955
* etc: minor spelling fixes.Pedro F. Giffuni2016-05-021-2/+2
| | | | | | | | | Mostly comments but also some user-visible strings. MFC after: 2 weeks Notes: svn path=/head/; revision=298931
* Handle the driver KPI change from r292373. Ensure that managed deviceKonstantin Belousov2016-03-241-15/+12
| | | | | | | | | | | | | | pagers fault routines always return with a result page, be it the proper and valid result page, or initially passed freshly allocated placeholder. Do not free the passed in page until we are able to provide the replacement, and do not assign NULL to *mres. Reported and tested by: dumbbell Reviewed by: royger (who also verified that Xen code is safe) Sponsored by: The FreeBSD Foundation Notes: svn path=/head/; revision=297231
* Introduce a new mechanism for relocating virtual pages to a new physicalAlan Cox2015-12-192-12/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | address and use this mechanism when: 1. kmem_alloc_{attr,contig}() can't find suitable free pages in the physical memory allocator's free page lists. This replaces the long-standing approach of scanning the inactive and inactive queues, converting clean pages into PG_CACHED pages and laundering dirty pages. In contrast, the new mechanism does not use PG_CACHED pages nor does it trigger a large number of I/O operations. 2. on 32-bit MIPS processors, uma_small_alloc() and the pmap can't find free pages in the physical memory allocator's free page lists that are covered by the direct map. Tested by: adrian 3. ttm_bo_global_init() and ttm_vm_page_alloc_dma32() can't find suitable free pages in the physical memory allocator's free page lists. In the coming months, I expect that this new mechanism will be applied in other places. For example, balloon drivers should use relocation to minimize fragmentation of the guest physical address space. Make vm_phys_alloc_contig() a little smarter (and more efficient in some cases). Specifically, use vm_phys_segs[] earlier to avoid scanning free page lists that can't possibly contain suitable pages. Reviewed by: kib, markj Glanced at: jhb Discussed with: jeff Sponsored by: EMC / Isilon Storage Division Differential Revision: https://reviews.freebsd.org/D4444 Notes: svn path=/head/; revision=292469
* A change to KPI of vm_pager_get_pages() and underlying VOP_GETPAGES().Gleb Smirnoff2015-12-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | o With new KPI consumers can request contiguous ranges of pages, and unlike before, all pages will be kept busied on return, like it was done before with the 'reqpage' only. Now the reqpage goes away. With new interface it is easier to implement code protected from race conditions. Such arrayed requests for now should be preceeded by a call to vm_pager_haspage() to make sure that request is possible. This could be improved later, making vm_pager_haspage() obsolete. Strenghtening the promises on the business of the array of pages allows us to remove such hacks as swp_pager_free_nrpage() and vm_pager_free_nonreq(). o New KPI accepts two integer pointers that may optionally point at values for read ahead and read behind, that a pager may do, if it can. These pages are completely owned by pager, and not controlled by the caller. This shifts the UFS-specific readahead logic from vm_fault.c, which should be file system agnostic, into vnode_pager.c. It also removes one VOP_BMAP() request per hard fault. Discussed with: kib, alc, jeff, scottl Sponsored by: Nginx, Inc. Sponsored by: Netflix Notes: svn path=/head/; revision=292373
* drm/ttm: Drain taskqueue if taskqueue_cancel_timeout() returned an errorJean-Sébastien Pédron2015-09-081-2/+1
| | | | | | | | Before, this was done if `pending` was true. This is not what the manpage suggests and not what was done elsewhere in the same file. Notes: svn path=/head/; revision=287573
* ttm_vm_page_alloc: use vm_page_alloc for pages without dma32 restrictionAndriy Gapon2015-06-151-45/+64
| | | | | | | | | | | | | | | This change re-organizes code a little bit to extract common pieces of ttm_alloc_new_pages() and ttm_get_pages() into dedicated functions. Also, for requests without address restrictions regular vm_page_alloc() is used. Lastly, when vm_page_alloc_contig() fails we call VM_WAIT before calling vm_pageout_grow_cache() to ensure that there is enough free pages at all. Reviewed by: kib MFC after: 15 days Notes: svn path=/head/; revision=284416
* drm: Update the device-independent code to match Linux 3.8.13Jean-Sébastien Pédron2015-03-174-27/+27
| | | | | | | | | | | | | | | | | | | | | | | | | This update brings few features: o Support for the setmaster/dropmaster ioctls. For instance, they are used to run multiple X servers simultaneously. o Support for minor devices. The only user-visible change is a new entry in /dev/dri but it is useless at the moment. This is a first step to support render nodes [1]. The main benefit is to greatly reduce the diff with Linux (at the expense of an unreadable commit diff). Hopefully, next upgrades will be easier. No updates were made to the drivers, beside adapting them to API changes. [1] https://en.wikipedia.org/wiki/Direct_Rendering_Manager#Render_nodes Tested by: Many people MFC after: 1 month Relnotes: yes Notes: svn path=/head/; revision=280183
* If the vm_page_alloc_contig() failed in the ttm page allocators, doKonstantin Belousov2015-02-032-5/+39
| | | | | | | | | | what other callers of vm_page_alloc_contig() do, retry after vm_pageout_grow_cache(). Sponsored by: The FreeBSD Foundation Notes: svn path=/head/; revision=278153
* Use default memory type for TTM buffer objects that may be cached.Tijl Coosemans2014-11-021-2/+1
| | | | | | | MFC after: 1 week Notes: svn path=/head/; revision=273969
* Port the TTM AGP backend to the FreeBSD agp driver and enable AGP supportTijl Coosemans2014-10-303-53/+27
| | | | | | | | | | | | | | | | | | in the radeonkms driver. Note: In PCI mode virtual addresses on the graphics card that map to system RAM are translated to physical addresses by the graphics card itself. In AGP mode address translation is done by the AGP chipset so fictitious addresses appear on the system bus. For the CPU cache management to work correctly when the CPU accesses this memory it needs to use the same fictitious addresses (and let the chipset translate them) instead of using the physical addresses directly. Reviewed by: kib MFC after: 1 month Notes: svn path=/head/; revision=273862
* drm: fix usage of vm_phys_fictitious_to_vm_pageRoger Pau Monné2014-08-061-2/+6
| | | | | | | | | | | | | | | vm_phys_fictitious_to_vm_page should not be called directly, even when operating on a range that has been registered using vm_phys_fictitious_reg_range. PHYS_TO_VM_PAGE should be used instead because on arches that use VM_PHYSSEG_DENSE the page might come directly from vm_page_array. Reported by: nwhitehorn Tested by: nwhitehorn, David Mackay <davidm.jx8p@gmail.com> Sponsored by: Citrix Systems R&D Notes: svn path=/head/; revision=269634
* - Modify vm_page_unwire() and vm_page_enqueue() to directly acceptAttilio Rao2014-06-161-1/+1
| | | | | | | | | | | | | | | | | | | | | the queue where to enqueue pages that are going to be unwired. - Add stronger checks to the enqueue/dequeue for the pagequeues when adding and removing pages to them. Of course, for unmanaged pages the queue parameter of vm_page_unwire() will be ignored, just as the active parameter today. This makes adding new pagequeues quicker. This change effectively modifies the KPI. __FreeBSD_version will be, however, bumped just when the full cache of free pages will be evicted. Sponsored by: EMC / Isilon storage division Reviewed by: alc Tested by: pho Notes: svn path=/head/; revision=267548
* drm/ttm, drm/radeon: Replace EINTR/ERESTART by ERESTARTSYS...Jean-Sébastien Pédron2013-12-212-0/+10
| | | | | | | | | | | | | | | | | | ... for msleep/cv_*wait() return values, where wait_event*() is used on Linux. ERESTARTSYS is the return code expected by callers when the operation was interrupted. For instance, this is the case of radeon_cs_ioctl() (radeon_cs.c): if an error occurs, and the code isn't ERESTARTSYS (eg. EINTR), it logs an error. Note that ERESTARTSYS is defined as ERESTART, but this keeps callers' code close to Linux. Submitted by: avg@ (previous version) Notes: svn path=/head/; revision=259684
* ttm_bo_vm_lookup_rb: actually make use of the red-black treeAndriy Gapon2013-12-191-2/+5
| | | | | | | | | | | | | Previously the code would just iterate over the whole tree as if it were just a list. Without this change I would observe X server becoming more and more jerky over time. MFC after: 5 days Notes: svn path=/head/; revision=259612
* Fix undefined behavior: (1 << 31) is not defined as 1 is an int and thisEitan Adler2013-11-301-3/+3
| | | | | | | | | | | | | | | | shifts into the sign bit. Instead use (1U << 31) which gets the expected result. This fix is not ideal as it assumes a 32 bit int, but does fix the issue for most cases. A similar change was made in OpenBSD. Discussed with: -arch, rdivacky Reviewed by: cperciva Notes: svn path=/head/; revision=258780
* Partially revert r254880. The bitmap operations actually use long type now.Jung-uk Kim2013-08-293-8/+5
| | | | Notes: svn path=/head/; revision=255044
* drm: Use the new drm_atomic.h, following the merge of projects/atomic64Jean-Sébastien Pédron2013-08-253-5/+8
| | | | | | | Submitted by: jkim@ Notes: svn path=/head/; revision=254880
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