Author: trasz Date: Mon Aug 24 14:53:29 2020 New Revision: 364691 URL: https://svnweb.freebsd.org/changeset/base/364691
Log: MFC r363125 by netchild: Implement CLOCK_MONOTONIC_RAW (linux >= 2.6.28). It is documented as a raw hardware-based clock not subject to NTP or incremental adjustments. With this "not as precise as CLOCK_MONOTONIC" description in mind, map it to our CLOCK_MONOTNIC_FAST (the same mapping as for the linux CLOCK_MONOTONIC_COARSE). This is needed for the webcomponent of steam (chromium) and some other steam component or game. The linux-steam-utils port contains a LD_PRELOAD based fix for this. There this is mapped to CLOCK_MONOTONIC. As an untrained ear/eye (= the majority of people) is normaly not noticing a difference of jitter in the 10-20 ms range, specially if you don't pay attention like for example in a browser session while watching a video stream, the mapping to CLOCK_MONOTONIC_FAST seems more appropriate than to CLOCK_MONOTONIC. MFC r363130 by netchild: Fix r363125 (Implement CLOCK_MONOTONIC_RAW (linux >= 2.6.28)), by realy using the MONOTONIC version and not the REALTIME version. Modified: stable/12/sys/compat/linux/linux_time.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/compat/linux/linux_time.c ============================================================================== --- stable/12/sys/compat/linux/linux_time.c Mon Aug 24 14:50:52 2020 (r364690) +++ stable/12/sys/compat/linux/linux_time.c Mon Aug 24 14:53:29 2020 (r364691) @@ -215,12 +215,12 @@ linux_to_native_clockid(clockid_t *n, clockid_t l) *n = CLOCK_REALTIME_FAST; break; case LINUX_CLOCK_MONOTONIC_COARSE: + case LINUX_CLOCK_MONOTONIC_RAW: *n = CLOCK_MONOTONIC_FAST; break; case LINUX_CLOCK_BOOTTIME: *n = CLOCK_UPTIME; break; - case LINUX_CLOCK_MONOTONIC_RAW: case LINUX_CLOCK_REALTIME_ALARM: case LINUX_CLOCK_BOOTTIME_ALARM: case LINUX_CLOCK_SGI_CYCLE: _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"