Lines Matching +full:sync +full:- +full:1

2 Sync File API Guide
8 sync_file API is, and how drivers can support it. Sync file is the carrier of
20 signals that the buffer is ready to use. And vice-versa for the consumer ->
23 Sync files allows userspace awareness on buffer sharing synchronization between
26 Sync file was originally added in the Android kernel but current Linux Desktop
29 in-fences and out-fences
30 ------------------------
32 Sync files can go either to or from userspace. When a sync_file is sent from
33 the driver to userspace we call the fences it contains 'out-fences'. They are
35 the driver creates an out-fence to be able to notify, through
37 Out-fences are fences that the driver creates.
40 userspace we call these fence(s) 'in-fences'. Receiving in-fences means that
42 the in-fences.
44 Creating Sync Files
45 -------------------
47 When a driver needs to send an out-fence userspace it creates a sync_file.
53 The caller pass the out-fence and gets back the sync_file. That is just the
54 first step, next it needs to install an fd on sync_file->file. So it gets an
59 and installs it on sync_file->file::
61 	fd_install(fd, sync_file->file);
66 other reason fput(sync_file->file) should be used.
68 Receiving Sync Files from Userspace
69 -----------------------------------
71 When userspace needs to send an in-fence to the driver it passes file descriptor
72 of the Sync File to the kernel. The kernel can then retrieve the fences
85 1. struct sync_file in include/linux/sync_file.h