| Server IP : 74.208.127.88 / Your IP : 216.73.216.67 Web Server : Apache/2.4.41 (Ubuntu) System : Linux ubuntu 5.4.0-163-generic #180-Ubuntu SMP Tue Sep 5 13:21:23 UTC 2023 x86_64 User : www-data ( 33) PHP Version : 7.4.3-4ubuntu2.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /usr/lib/modules/5.4.0-163-generic/build/drivers/gpu/drm/i915/ |
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config DRM_I915_USERFAULT_AUTOSUSPEND int "Runtime autosuspend delay for userspace GGTT mmaps (ms)" default 250 # milliseconds help On runtime suspend, as we suspend the device, we have to revoke userspace GGTT mmaps and force userspace to take a pagefault on their next access. The revocation and subsequent recreation of the GGTT mmap can be very slow and so we impose a small hysteris that complements the runtime-pm autosuspend and provides a lower floor on the autosuspend delay. May be 0 to disable the extra delay and solely use the device level runtime pm autosuspend delay tunable. config DRM_I915_SPIN_REQUEST int "Busywait for request completion (us)" default 5 # microseconds help Before sleeping waiting for a request (GPU operation) to complete, we may spend some time polling for its completion. As the IRQ may take a non-negligible time to setup, we do a short spin first to check if the request will complete in the time it would have taken us to enable the interrupt. May be 0 to disable the initial spin. In practice, we estimate the cost of enabling the interrupt (if currently disabled) to be a few microseconds.