update to 6.3.1

1 files changed, 86 insertions, 0 deletions

diff --git a/0001-constgran-v2.patch b/0001-constgran-v2.patch
new file mode 100644
index 000000000000..2c5ded27ba70
--- /dev/null
+++ b/0001-constgran-v2.patch
@@ -0,0 +1,86 @@
+From 823fb7f07b91a3c7b7d1a4d6a3532a4e4c337e70 Mon Sep 17 00:00:00 2001
+From: Masahito S <firelzrd@gmail.com>
+Date: Fri, 7 Apr 2023 00:57:07 +0900
+Subject: [PATCH] constgran v2 sched: Make latency / granularity constant
+ tunable_scaling = 1 (logarithmic) -> 0 (constant) latency_ns = variable
+ 6-24ms -> constant 12.8ms min_granularity_ns = variable 0.75-3ms -> constant
+ 1.6ms wakeup_granularity_ns = variable 1-4ms -> constant 9.6ms
+
+---
+ 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 44de1349c..3ad82e1ab 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: 12.8ms constant, units: nanoseconds)
++ * (CFS  default: 6ms * (1 + ilog(ncpus)), units: nanoseconds)
+  */
++#ifdef CONFIG_SCHED_BORE
++unsigned int sysctl_sched_latency			= 12800000ULL;
++static unsigned int normalized_sysctl_sched_latency	= 12800000ULL;
++#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: 1.6 msec constant, units: nanoseconds)
++ * (CFS  default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds)
+  */
++#ifdef CONFIG_SCHED_BORE
++unsigned int sysctl_sched_min_granularity			= 1600000ULL;
++static unsigned int normalized_sysctl_sched_min_granularity	= 1600000ULL;
++#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: 9.6 msec constant, units: nanoseconds)
++ * (CFS  default: 1 msec * (1 + ilog(ncpus)), units: nanoseconds)
+  */
++#ifdef CONFIG_SCHED_BORE
++unsigned int sysctl_sched_wakeup_granularity			= 9600000UL;
++static unsigned int normalized_sysctl_sched_wakeup_granularity	= 9600000UL;
++#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
+