#ifndef __ASM_GENERIC_MMU_CONTEXT_H #define __ASM_GENERIC_MMU_CONTEXT_H /* * Generic hooks for NOMMU architectures, which do not need to do * anything special here. */ #include struct task_struct; struct mm_struct; static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) { } static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm) { return 0; } static inline void destroy_context(struct mm_struct *mm) { } static inline void deactivate_mm(struct task_struct *task, struct mm_struct *mm) { } static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk) { } static inline void activate_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm) { } #endif /* __ASM_GENERIC_MMU_CONTEXT_H */ >
net-next plumbingsTobias Klauser
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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-30 19:27:10 -0500
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-31 09:13:49 -0500
commit79c6f448c8b79c321e4a1f31f98194e4f6b6cae7 (patch)
tree370efda701f03cccf21e02bb1fdd3b852547d75c /include/uapi/drm/i915_drm.h
parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'include/uapi/drm/i915_drm.h')