diff options
| author | Rouven Czerwinski <rouven@czerwinskis.de> | 2022-05-13 20:30:19 +0200 |
|---|---|---|
| committer | Kenny Levinsen <kl@kl.wtf> | 2022-05-18 11:20:17 +0200 |
| commit | a3a82efbf6b5b3af840c70038b1b599ba29003ac (patch) | |
| tree | fe28dbc19271b9dce54f7433a86bab0073fe8ca9 /include/sway | |
| parent | 3f600565e4dd4fb7a45a7b721d518c79f8d41b59 (diff) | |
realtime: request SCHED_RR using CAP_SYS_NICE
Try to gain SCHED_RR (round-robin) realtime scheduling privileges before
starting the server. This requires CAP_SYS_NICE on Linux systems.
We additionally register a pthread_atfork callback which resets the
scheduling class back to SCHED_OTHER (the Linux system default).
Due to CAP_SYS_NICE, setting RLIMIT_RTPRIO has no effect on the process
as documented within man 7 sched (from Linux):
Privileged (CAP_SYS_NICE) threads ignore the RLIMIT_RTPRIO limit;
as with older kernels, they can make arbitrary changes to
scheduling policy and priority. See getrlimit(2) for further
information on RLIMIT_RTPRIO
Note that this requires the sway distribution packagers to set the
CAP_SYS_NICE capability on the sway binary.
Supersedes #6992
Diffstat (limited to 'include/sway')
| -rw-r--r-- | include/sway/server.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/sway/server.h b/include/sway/server.h index d8ccd64f..3d59ca56 100644 --- a/include/sway/server.h +++ b/include/sway/server.h @@ -173,4 +173,6 @@ void handle_pointer_constraint(struct wl_listener *listener, void *data); void xdg_activation_v1_handle_request_activate(struct wl_listener *listener, void *data); +void set_rr_scheduling(void); + #endif |