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5f0d4d1463
Tracking DRM clients more explicitly will allow later patches to accumulate past and current GPU usage in a centralised place and also consolidate access to owning task pid/name. Unique client id is also assigned for the purpose of distinguishing/ consolidating between multiple file descriptors owned by the same process. v2: Chris Wilson: * Enclose new members into dedicated structs. * Protect against failed sysfs registration. v3: * sysfs_attr_init. v4: * Fix for internal clients. v5: * Use cyclic ida for client id. (Chris) * Do not leak pid reference. (Chris) * Tidy code with some locals. v6: * Use xa_alloc_cyclic to simplify locking. (Chris) * No need to unregister individial sysfs files. (Chris) * Rebase on top of fpriv kref. * Track client closed status and reflect in sysfs. v7: * Make drm_client more standalone concept. v8: * Simplify sysfs show. (Chris) * Always track name and pid. v9: * Fix cyclic id assignment. v10: * No need for a mutex around xa_alloc_cyclic. * Refactor sysfs into own function. * Unregister sysfs before freeing pid and name. * Move clients setup into own function. v11: * Call clients init directly from driver init. (Chris) v12: * Do not fail client add on id wrap. (Maciej) v13 (Lucas): Rebase. v14: * Dropped sysfs bits. v15: * Dropped tracking of pid/ and name. * Dropped RCU freeing of the client object. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> # v11 Reviewed-by: Aravind Iddamsetty <aravind.iddamsetty@intel.com> # v11 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220401142205.3123159-2-tvrtko.ursulin@linux.intel.com |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.