/* * Copyright (C) 2013 Red Hat * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef DRM_FLIP_WORK_H #define DRM_FLIP_WORK_H #include #include #include /** * DOC: flip utils * * Util to queue up work to run from work-queue context after flip/vblank. * Typically this can be used to defer unref of framebuffer's, cursor * bo's, etc until after vblank. The APIs are all thread-safe. * Moreover, drm_flip_work_queue_task and drm_flip_work_queue can be called * in atomic context. */ struct drm_flip_work; /* * drm_flip_func_t - callback function * * @work: the flip work * @val: value queued via drm_flip_work_queue() * * Callback function to be called for each of the queue'd work items after * drm_flip_work_commit() is called. */ typedef void (*drm_flip_func_t)(struct drm_flip_work *work, void *val); /** * struct drm_flip_task - flip work task * @node: list entry element * @data: data to pass to work->func */ struct drm_flip_task { struct list_head node; void *data; }; /** * struct drm_flip_work - flip work queue * @name: debug name * @func: callback fxn called for each committed item * @worker: worker which calls @func * @queued: queued tasks * @commited: commited tasks * @lock: lock to access queued and commited lists */ struct drm_flip_work { const char *name; drm_flip_func_t func; struct work_struct worker; struct list_head queued; struct list_head commited; spinlock_t lock; }; struct drm_flip_task *drm_flip_work_allocate_task(void *data, gfp_t flags); void drm_flip_work_queue_task(struct drm_flip_work *work, struct drm_flip_task *task); void drm_flip_work_queue(struct drm_flip_work *work, void *val); void drm_flip_work_commit(struct drm_flip_work *work, struct workqueue_struct *wq); void drm_flip_work_init(struct drm_flip_work *work, const char *name, drm_flip_func_t func); void drm_flip_work_cleanup(struct drm_flip_work *work); #endif /* DRM_FLIP_WORK_H */ ommit/tools?id=54791b276b4000b307339f269d3bf7db877d536f'>tools/perf/pmu-events/arch/x86/bonnell/floating-point.json
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authorDavid S. Miller <davem@davemloft.net>2017-01-30 14:28:22 -0800
committerDavid S. Miller <davem@davemloft.net>2017-01-30 14:28:22 -0800
commit54791b276b4000b307339f269d3bf7db877d536f (patch)
tree1c2616bd373ce5ea28aac2a53e32f5b5834901ce /tools/perf/pmu-events/arch/x86/bonnell/floating-point.json
parent5d0e7705774dd412a465896d08d59a81a345c1e4 (diff)
parent047487241ff59374fded8c477f21453681f5995c (diff)
Merge branch 'sparc64-non-resumable-user-error-recovery'
Liam R. Howlett says: ==================== sparc64: Recover from userspace non-resumable PIO & MEM errors A non-resumable error from userspace is able to cause a kernel panic or trap loop due to the setup and handling of the queued traps once in the kernel. This patch series addresses both of these issues. The queues are fixed by simply zeroing the memory before use. PIO errors from userspace will result in a SIGBUS being sent to the user process. The MEM errors form userspace will result in a SIGKILL and also cause the offending pages to be claimed so they are no longer used in future tasks. SIGKILL is used to ensure that the process does not try to coredump and result in an attempt to read the memory again from within kernel space. Although there is a HV call to scrub the memory (mem_scrub), there is no easy way to guarantee that the real memory address(es) are not used by other tasks. Clearing the error with mem_scrub would zero the memory and cause the other processes to proceed with bad data. The handling of other non-resumable errors remain unchanged and will cause a panic. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/pmu-events/arch/x86/bonnell/floating-point.json')