diff options
Diffstat (limited to 'sys-kernel/linux-sources-redcore-lts/files/5.15-0002-constgran-vanilla-max.patch')
-rw-r--r-- | sys-kernel/linux-sources-redcore-lts/files/5.15-0002-constgran-vanilla-max.patch | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/sys-kernel/linux-sources-redcore-lts/files/5.15-0002-constgran-vanilla-max.patch b/sys-kernel/linux-sources-redcore-lts/files/5.15-0002-constgran-vanilla-max.patch deleted file mode 100644 index aa20644d..00000000 --- a/sys-kernel/linux-sources-redcore-lts/files/5.15-0002-constgran-vanilla-max.patch +++ /dev/null @@ -1,86 +0,0 @@ -From 250ba4a23f392dd37c673fd3879c6281a3a62291 Mon Sep 17 00:00:00 2001 -From: Masahito S <firelzrd@gmail.com> -Date: Mon, 15 May 2023 06:00:52 +0900 -Subject: [PATCH] constgran vanilla-max sched: Make latency / granularity - constant tunable_scaling = 1 (logarithmic) -> 0 (constant) latency_ns = - variable 6-24ms -> constant 24ms min_granularity_ns = variable 0.75-3ms -> - constant 3ms wakeup_granularity_ns = variable 1-4ms -> constant 4ms - ---- - kernel/sched/fair.c | 31 +++++++++++++++++++++++++++---- - 1 file changed, 27 insertions(+), 4 deletions(-) - -diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c -index 8b5bf7280..340f8dd14 100644 ---- a/kernel/sched/fair.c -+++ b/kernel/sched/fair.c -@@ -36,10 +36,16 @@ - * (to see the precise effective timeslice length of your workload, - * run vmstat and monitor the context-switches (cs) field) - * -- * (default: 6ms * (1 + ilog(ncpus)), units: nanoseconds) -+ * (BORE default: 24ms constant, units: nanoseconds) -+ * (CFS default: 6ms * (1 + ilog(ncpus)), units: nanoseconds) - */ -+#ifdef CONFIG_SCHED_BORE -+unsigned int sysctl_sched_latency = 24000000ULL; -+static unsigned int normalized_sysctl_sched_latency = 24000000ULL; -+#else // CONFIG_SCHED_BORE - unsigned int sysctl_sched_latency = 6000000ULL; - static unsigned int normalized_sysctl_sched_latency = 6000000ULL; -+#endif // CONFIG_SCHED_BORE - - /* - * The initial- and re-scaling of tunables is configurable -@@ -50,17 +56,28 @@ static unsigned int normalized_sysctl_sched_latency = 6000000ULL; - * SCHED_TUNABLESCALING_LOG - scaled logarithmical, *1+ilog(ncpus) - * SCHED_TUNABLESCALING_LINEAR - scaled linear, *ncpus - * -- * (default SCHED_TUNABLESCALING_LOG = *(1+ilog(ncpus)) -+ * (BORE default SCHED_TUNABLESCALING_NONE = *1 constant) -+ * (CFS default SCHED_TUNABLESCALING_LOG = *(1+ilog(ncpus)) - */ -+#ifdef CONFIG_SCHED_BORE -+unsigned int sysctl_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE; -+#else // CONFIG_SCHED_BORE - unsigned int sysctl_sched_tunable_scaling = SCHED_TUNABLESCALING_LOG; -+#endif // CONFIG_SCHED_BORE - - /* - * Minimal preemption granularity for CPU-bound tasks: - * -- * (default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds) -+ * (BORE default: 3 msec constant, units: nanoseconds) -+ * (CFS default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds) - */ -+#ifdef CONFIG_SCHED_BORE -+unsigned int sysctl_sched_min_granularity = 3000000ULL; -+static unsigned int normalized_sysctl_sched_min_granularity = 3000000ULL; -+#else // CONFIG_SCHED_BORE - unsigned int sysctl_sched_min_granularity = 750000ULL; - static unsigned int normalized_sysctl_sched_min_granularity = 750000ULL; -+#endif // CONFIG_SCHED_BORE - - /* - * This value is kept at sysctl_sched_latency/sysctl_sched_min_granularity -@@ -80,10 +97,16 @@ unsigned int sysctl_sched_child_runs_first __read_mostly; - * and reduces their over-scheduling. Synchronous workloads will still - * have immediate wakeup/sleep latencies. - * -- * (default: 1 msec * (1 + ilog(ncpus)), units: nanoseconds) -+ * (BORE default: 4 msec constant, units: nanoseconds) -+ * (CFS default: 1 msec * (1 + ilog(ncpus)), units: nanoseconds) - */ -+#ifdef CONFIG_SCHED_BORE -+unsigned int sysctl_sched_wakeup_granularity = 4000000UL; -+static unsigned int normalized_sysctl_sched_wakeup_granularity = 4000000UL; -+#else // CONFIG_SCHED_BORE - unsigned int sysctl_sched_wakeup_granularity = 1000000UL; - static unsigned int normalized_sysctl_sched_wakeup_granularity = 1000000UL; -+#endif // CONFIG_SCHED_BORE - - const_debug unsigned int sysctl_sched_migration_cost = 500000UL; - --- -2.25.1 - |