From b4a23d586f3196e812f2a20cbbf040128d0c1c40 Mon Sep 17 00:00:00 2001 From: V3n3RiX Date: Tue, 11 Feb 2020 09:05:31 +0000 Subject: sys-kernel : move kernel 4.19.xx to sys-kernel/linux-{image,sources}-redcore-lts-legacy --- ...onvert-msleep-to-use-hrtimers-when-active.patch | 54 ++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 sys-kernel/linux-sources-redcore-lts-legacy/files/4.19-0007-Convert-msleep-to-use-hrtimers-when-active.patch (limited to 'sys-kernel/linux-sources-redcore-lts-legacy/files/4.19-0007-Convert-msleep-to-use-hrtimers-when-active.patch') diff --git a/sys-kernel/linux-sources-redcore-lts-legacy/files/4.19-0007-Convert-msleep-to-use-hrtimers-when-active.patch b/sys-kernel/linux-sources-redcore-lts-legacy/files/4.19-0007-Convert-msleep-to-use-hrtimers-when-active.patch new file mode 100644 index 00000000..e9edcd12 --- /dev/null +++ b/sys-kernel/linux-sources-redcore-lts-legacy/files/4.19-0007-Convert-msleep-to-use-hrtimers-when-active.patch @@ -0,0 +1,54 @@ +From 7b74daf29a88f3314af306509bd40d45c34f11c7 Mon Sep 17 00:00:00 2001 +From: Con Kolivas +Date: Fri, 4 Nov 2016 09:25:54 +1100 +Subject: [PATCH 07/16] Convert msleep to use hrtimers when active. + +--- + kernel/time/timer.c | 24 ++++++++++++++++++++++-- + 1 file changed, 22 insertions(+), 2 deletions(-) + +diff --git a/kernel/time/timer.c b/kernel/time/timer.c +index ae942d459aa2..542c13d98950 100644 +--- a/kernel/time/timer.c ++++ b/kernel/time/timer.c +@@ -1965,7 +1965,19 @@ void __init init_timers(void) + */ + void msleep(unsigned int msecs) + { +- unsigned long timeout = msecs_to_jiffies(msecs) + 1; ++ int jiffs = msecs_to_jiffies(msecs); ++ unsigned long timeout; ++ ++ /* ++ * Use high resolution timers where the resolution of tick based ++ * timers is inadequate. ++ */ ++ if (jiffs < 5 && hrtimer_resolution < NSEC_PER_SEC / HZ) { ++ while (msecs) ++ msecs = schedule_msec_hrtimeout_uninterruptible(msecs); ++ return; ++ } ++ timeout = msecs_to_jiffies(msecs) + 1; + + while (timeout) + timeout = schedule_timeout_uninterruptible(timeout); +@@ -1979,7 +1991,15 @@ EXPORT_SYMBOL(msleep); + */ + unsigned long msleep_interruptible(unsigned int msecs) + { +- unsigned long timeout = msecs_to_jiffies(msecs) + 1; ++ int jiffs = msecs_to_jiffies(msecs); ++ unsigned long timeout; ++ ++ if (jiffs < 5 && hrtimer_resolution < NSEC_PER_SEC / HZ) { ++ while (msecs && !signal_pending(current)) ++ msecs = schedule_msec_hrtimeout_interruptible(msecs); ++ return msecs; ++ } ++ timeout = msecs_to_jiffies(msecs) + 1; + + while (timeout && !signal_pending(current)) + timeout = schedule_timeout_interruptible(timeout); +-- +2.17.1 + -- cgit v1.2.3