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| author | Jean-Sébastien Pédron <dumbbell@FreeBSD.org> | 2025-05-26 19:18:24 +0200 |
|---|---|---|
| committer | Jean-Sébastien Pédron <dumbbell@FreeBSD.org> | 2026-01-25 17:04:40 +0100 |
| commit | 5931649751847cc3ca54255bb767424dcb8a3e97 (patch) | |
| tree | 9326aea9c58718b0b0cbb0eaface77c541e027bf /lib/Checker/UndefinedArraySubscriptChecker.cpp | |
| parent | e878df0d3b1ecb409c21c808f7c3d623277353af (diff) | |
eventfd: Add refcounting
An eventfd file descriptor can be used by drivers such as DRM drivers
through linuxkpi. A driver can hold a reference to such a file
regardless of the fact it is used by userland or not.
This patch introduces a refcount in `struct eventfd`, plus the
`eventfd_get()` and `eventfd_put()` functions to acquire and release
references. These functions will be used by DRM drivers for instance.
This structure is internal to `sys/kern/sys_eventfd.c` and not used
anywhere else. Thus it is safe to add a field without breaking anything.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D50849
Diffstat (limited to 'lib/Checker/UndefinedArraySubscriptChecker.cpp')
0 files changed, 0 insertions, 0 deletions