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authorV3n3RiX <venerix@koprulu.sector>2024-05-03 20:57:12 +0100
committerV3n3RiX <venerix@koprulu.sector>2024-05-03 20:57:12 +0100
commit52ff08b9d52f7916ad7fd62942bd10d76e832dcb (patch)
tree9bcbbfc69ff49168bdd4ecc917fa2a6f58b4569d /sys-kernel/linux-image-redcore/files
parente675071c2ef223b5cda9cc4b2cd2792bb5834fff (diff)
sys-kernel/linux-{image,sources}-redcore : version bump
Diffstat (limited to 'sys-kernel/linux-image-redcore/files')
-rw-r--r--sys-kernel/linux-image-redcore/files/6.8-0001-linux6.8.y-bore5.1.0.patch764
-rw-r--r--sys-kernel/linux-image-redcore/files/6.8-amd64.config6
2 files changed, 3 insertions, 767 deletions
diff --git a/sys-kernel/linux-image-redcore/files/6.8-0001-linux6.8.y-bore5.1.0.patch b/sys-kernel/linux-image-redcore/files/6.8-0001-linux6.8.y-bore5.1.0.patch
deleted file mode 100644
index 0fffdcea..00000000
--- a/sys-kernel/linux-image-redcore/files/6.8-0001-linux6.8.y-bore5.1.0.patch
+++ /dev/null
@@ -1,764 +0,0 @@
-From feae72fd7f2403910c157dd679d6ec240ed1dfbf Mon Sep 17 00:00:00 2001
-From: Masahito S <firelzrd@gmail.com>
-Date: Mon, 22 Apr 2024 04:12:58 +0900
-Subject: [PATCH] linux6.8.y-bore5.1.0
-
----
- include/linux/sched.h | 10 ++
- init/Kconfig | 17 +++
- kernel/sched/core.c | 143 +++++++++++++++++++++++++
- kernel/sched/debug.c | 60 ++++++++++-
- kernel/sched/fair.c | 230 ++++++++++++++++++++++++++++++++++++++--
- kernel/sched/features.h | 4 +
- kernel/sched/sched.h | 7 ++
- 7 files changed, 462 insertions(+), 9 deletions(-)
-
-diff --git a/include/linux/sched.h b/include/linux/sched.h
-index ffe8f618ab..0ab0b04240 100644
---- a/include/linux/sched.h
-+++ b/include/linux/sched.h
-@@ -547,6 +547,16 @@ struct sched_entity {
- u64 sum_exec_runtime;
- u64 prev_sum_exec_runtime;
- u64 vruntime;
-+#ifdef CONFIG_SCHED_BORE
-+ u64 burst_time;
-+ u8 prev_burst_penalty;
-+ u8 curr_burst_penalty;
-+ u8 burst_penalty;
-+ u8 burst_score;
-+ u8 child_burst;
-+ u32 child_burst_cnt;
-+ u64 child_burst_last_cached;
-+#endif // CONFIG_SCHED_BORE
- s64 vlag;
- u64 slice;
-
-diff --git a/init/Kconfig b/init/Kconfig
-index bee58f7468..13427dbb48 100644
---- a/init/Kconfig
-+++ b/init/Kconfig
-@@ -1279,6 +1279,23 @@ config CHECKPOINT_RESTORE
-
- If unsure, say N here.
-
-+config SCHED_BORE
-+ bool "Burst-Oriented Response Enhancer"
-+ default y
-+ help
-+ In Desktop and Mobile computing, one might prefer interactive
-+ tasks to keep responsive no matter what they run in the background.
-+
-+ Enabling this kernel feature modifies the scheduler to discriminate
-+ tasks by their burst time (runtime since it last went sleeping or
-+ yielding state) and prioritize those that run less bursty.
-+ Such tasks usually include window compositor, widgets backend,
-+ terminal emulator, video playback, games and so on.
-+ With a little impact to scheduling fairness, it may improve
-+ responsiveness especially under heavy background workload.
-+
-+ If unsure, say Y here.
-+
- config SCHED_AUTOGROUP
- bool "Automatic process group scheduling"
- select CGROUPS
-diff --git a/kernel/sched/core.c b/kernel/sched/core.c
-index 9116bcc903..d1711f75f8 100644
---- a/kernel/sched/core.c
-+++ b/kernel/sched/core.c
-@@ -4507,6 +4507,138 @@ int wake_up_state(struct task_struct *p, unsigned int state)
- return try_to_wake_up(p, state, 0);
- }
-
-+#ifdef CONFIG_SCHED_BORE
-+extern u8 sched_burst_fork_atavistic;
-+extern uint sched_burst_cache_lifetime;
-+
-+static void __init sched_init_bore(void) {
-+ init_task.se.burst_time = 0;
-+ init_task.se.prev_burst_penalty = 0;
-+ init_task.se.curr_burst_penalty = 0;
-+ init_task.se.burst_penalty = 0;
-+ init_task.se.burst_score = 0;
-+ init_task.se.child_burst_last_cached = 0;
-+}
-+
-+void inline sched_fork_bore(struct task_struct *p) {
-+ p->se.burst_time = 0;
-+ p->se.curr_burst_penalty = 0;
-+ p->se.burst_score = 0;
-+ p->se.child_burst_last_cached = 0;
-+}
-+
-+static u32 count_child_tasks(struct task_struct *p) {
-+ struct task_struct *child;
-+ u32 cnt = 0;
-+ list_for_each_entry(child, &p->children, sibling) {cnt++;}
-+ return cnt;
-+}
-+
-+static inline bool task_is_inheritable(struct task_struct *p) {
-+ return (p->sched_class == &fair_sched_class);
-+}
-+
-+static inline bool child_burst_cache_expired(struct task_struct *p, u64 now) {
-+ u64 expiration_time =
-+ p->se.child_burst_last_cached + sched_burst_cache_lifetime;
-+ return ((s64)(expiration_time - now) < 0);
-+}
-+
-+static void __update_child_burst_cache(
-+ struct task_struct *p, u32 cnt, u32 sum, u64 now) {
-+ u8 avg = 0;
-+ if (cnt) avg = sum / cnt;
-+ p->se.child_burst = max(avg, p->se.burst_penalty);
-+ p->se.child_burst_cnt = cnt;
-+ p->se.child_burst_last_cached = now;
-+}
-+
-+static inline void update_child_burst_direct(struct task_struct *p, u64 now) {
-+ struct task_struct *child;
-+ u32 cnt = 0;
-+ u32 sum = 0;
-+
-+ list_for_each_entry(child, &p->children, sibling) {
-+ if (!task_is_inheritable(child)) continue;
-+ cnt++;
-+ sum += child->se.burst_penalty;
-+ }
-+
-+ __update_child_burst_cache(p, cnt, sum, now);
-+}
-+
-+static inline u8 __inherit_burst_direct(struct task_struct *p, u64 now) {
-+ struct task_struct *parent = p->real_parent;
-+ if (child_burst_cache_expired(parent, now))
-+ update_child_burst_direct(parent, now);
-+
-+ return parent->se.child_burst;
-+}
-+
-+static void update_child_burst_topological(
-+ struct task_struct *p, u64 now, u32 depth, u32 *acnt, u32 *asum) {
-+ struct task_struct *child, *dec;
-+ u32 cnt = 0, dcnt = 0;
-+ u32 sum = 0;
-+
-+ list_for_each_entry(child, &p->children, sibling) {
-+ dec = child;
-+ while ((dcnt = count_child_tasks(dec)) == 1)
-+ dec = list_first_entry(&dec->children, struct task_struct, sibling);
-+
-+ if (!dcnt || !depth) {
-+ if (!task_is_inheritable(dec)) continue;
-+ cnt++;
-+ sum += dec->se.burst_penalty;
-+ continue;
-+ }
-+ if (!child_burst_cache_expired(dec, now)) {
-+ cnt += dec->se.child_burst_cnt;
-+ sum += (u32)dec->se.child_burst * dec->se.child_burst_cnt;
-+ continue;
-+ }
-+ update_child_burst_topological(dec, now, depth - 1, &cnt, &sum);
-+ }
-+
-+ __update_child_burst_cache(p, cnt, sum, now);
-+ *acnt += cnt;
-+ *asum += sum;
-+}
-+
-+static inline u8 __inherit_burst_topological(struct task_struct *p, u64 now) {
-+ struct task_struct *anc = p->real_parent;
-+ u32 cnt = 0, sum = 0;
-+
-+ while (anc->real_parent != anc && count_child_tasks(anc) == 1)
-+ anc = anc->real_parent;
-+
-+ if (child_burst_cache_expired(anc, now))
-+ update_child_burst_topological(
-+ anc, now, sched_burst_fork_atavistic - 1, &cnt, &sum);
-+
-+ return anc->se.child_burst;
-+}
-+
-+static inline void inherit_burst(struct task_struct *p) {
-+ u8 burst_cache;
-+ u64 now = ktime_get_ns();
-+
-+ read_lock(&tasklist_lock);
-+ burst_cache = likely(sched_burst_fork_atavistic)?
-+ __inherit_burst_topological(p, now):
-+ __inherit_burst_direct(p, now);
-+ read_unlock(&tasklist_lock);
-+
-+ p->se.prev_burst_penalty = max(p->se.prev_burst_penalty, burst_cache);
-+}
-+
-+static void sched_post_fork_bore(struct task_struct *p) {
-+ if (p->sched_class == &fair_sched_class)
-+ inherit_burst(p);
-+ p->se.burst_penalty = p->se.prev_burst_penalty;
-+}
-+#endif // CONFIG_SCHED_BORE
-+
- /*
- * Perform scheduler related setup for a newly forked process p.
- * p is forked by current.
-@@ -4523,6 +4655,9 @@ static void __sched_fork(unsigned long clone_flags, struct task_struct *p)
- p->se.prev_sum_exec_runtime = 0;
- p->se.nr_migrations = 0;
- p->se.vruntime = 0;
-+#ifdef CONFIG_SCHED_BORE
-+ sched_fork_bore(p);
-+#endif // CONFIG_SCHED_BORE
- p->se.vlag = 0;
- p->se.slice = sysctl_sched_base_slice;
- INIT_LIST_HEAD(&p->se.group_node);
-@@ -4839,6 +4974,9 @@ void sched_cgroup_fork(struct task_struct *p, struct kernel_clone_args *kargs)
-
- void sched_post_fork(struct task_struct *p)
- {
-+#ifdef CONFIG_SCHED_BORE
-+ sched_post_fork_bore(p);
-+#endif // CONFIG_SCHED_BORE
- uclamp_post_fork(p);
- }
-
-@@ -9910,6 +10048,11 @@ void __init sched_init(void)
- BUG_ON(&dl_sched_class != &stop_sched_class + 1);
- #endif
-
-+#ifdef CONFIG_SCHED_BORE
-+ sched_init_bore();
-+ printk(KERN_INFO "BORE (Burst-Oriented Response Enhancer) CPU Scheduler modification 5.1.0 by Masahito Suzuki");
-+#endif // CONFIG_SCHED_BORE
-+
- wait_bit_init();
-
- #ifdef CONFIG_FAIR_GROUP_SCHED
-diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
-index 8d5d98a583..b178612617 100644
---- a/kernel/sched/debug.c
-+++ b/kernel/sched/debug.c
-@@ -167,7 +167,52 @@ static const struct file_operations sched_feat_fops = {
- };
-
- #ifdef CONFIG_SMP
-+#ifdef CONFIG_SCHED_BORE
-+static ssize_t sched_min_base_slice_write(struct file *filp, const char __user *ubuf,
-+ size_t cnt, loff_t *ppos)
-+{
-+ char buf[16];
-+ unsigned int value;
-+
-+ if (cnt > 15)
-+ cnt = 15;
-+
-+ if (copy_from_user(&buf, ubuf, cnt))
-+ return -EFAULT;
-+ buf[cnt] = '\0';
-+
-+ if (kstrtouint(buf, 10, &value))
-+ return -EINVAL;
-
-+ if (!value)
-+ return -EINVAL;
-+
-+ sysctl_sched_min_base_slice = value;
-+ sched_update_min_base_slice();
-+
-+ *ppos += cnt;
-+ return cnt;
-+}
-+
-+static int sched_min_base_slice_show(struct seq_file *m, void *v)
-+{
-+ seq_printf(m, "%d\n", sysctl_sched_min_base_slice);
-+ return 0;
-+}
-+
-+static int sched_min_base_slice_open(struct inode *inode, struct file *filp)
-+{
-+ return single_open(filp, sched_min_base_slice_show, NULL);
-+}
-+
-+static const struct file_operations sched_min_base_slice_fops = {
-+ .open = sched_min_base_slice_open,
-+ .write = sched_min_base_slice_write,
-+ .read = seq_read,
-+ .llseek = seq_lseek,
-+ .release = single_release,
-+};
-+#else // !CONFIG_SCHED_BORE
- static ssize_t sched_scaling_write(struct file *filp, const char __user *ubuf,
- size_t cnt, loff_t *ppos)
- {
-@@ -213,7 +258,7 @@ static const struct file_operations sched_scaling_fops = {
- .llseek = seq_lseek,
- .release = single_release,
- };
--
-+#endif // CONFIG_SCHED_BORE
- #endif /* SMP */
-
- #ifdef CONFIG_PREEMPT_DYNAMIC
-@@ -347,13 +392,20 @@ static __init int sched_init_debug(void)
- debugfs_create_file("preempt", 0644, debugfs_sched, NULL, &sched_dynamic_fops);
- #endif
-
-+#ifdef CONFIG_SCHED_BORE
-+ debugfs_create_file("min_base_slice_ns", 0644, debugfs_sched, NULL, &sched_min_base_slice_fops);
-+ debugfs_create_u32("base_slice_ns", 0400, debugfs_sched, &sysctl_sched_base_slice);
-+#else // !CONFIG_SCHED_BORE
- debugfs_create_u32("base_slice_ns", 0644, debugfs_sched, &sysctl_sched_base_slice);
-+#endif // CONFIG_SCHED_BORE
-
- debugfs_create_u32("latency_warn_ms", 0644, debugfs_sched, &sysctl_resched_latency_warn_ms);
- debugfs_create_u32("latency_warn_once", 0644, debugfs_sched, &sysctl_resched_latency_warn_once);
-
- #ifdef CONFIG_SMP
-+#if !defined(CONFIG_SCHED_BORE)
- debugfs_create_file("tunable_scaling", 0644, debugfs_sched, NULL, &sched_scaling_fops);
-+#endif // CONFIG_SCHED_BORE
- debugfs_create_u32("migration_cost_ns", 0644, debugfs_sched, &sysctl_sched_migration_cost);
- debugfs_create_u32("nr_migrate", 0644, debugfs_sched, &sysctl_sched_nr_migrate);
-
-@@ -595,6 +647,9 @@ print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
- SPLIT_NS(schedstat_val_or_zero(p->stats.sum_sleep_runtime)),
- SPLIT_NS(schedstat_val_or_zero(p->stats.sum_block_runtime)));
-
-+#ifdef CONFIG_SCHED_BORE
-+ SEQ_printf(m, " %2d", p->se.burst_score);
-+#endif // CONFIG_SCHED_BORE
- #ifdef CONFIG_NUMA_BALANCING
- SEQ_printf(m, " %d %d", task_node(p), task_numa_group_id(p));
- #endif
-@@ -1068,6 +1123,9 @@ void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns,
-
- P(se.load.weight);
- #ifdef CONFIG_SMP
-+#ifdef CONFIG_SCHED_BORE
-+ P(se.burst_score);
-+#endif // CONFIG_SCHED_BORE
- P(se.avg.load_sum);
- P(se.avg.runnable_sum);
- P(se.avg.util_sum);
-diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
-index 533547e3c9..a2346b1b44 100644
---- a/kernel/sched/fair.c
-+++ b/kernel/sched/fair.c
-@@ -19,6 +19,9 @@
- *
- * Adaptive scheduling granularity, math enhancements by Peter Zijlstra
- * Copyright (C) 2007 Red Hat, Inc., Peter Zijlstra
-+ *
-+ * Burst-Oriented Response Enhancer (BORE) CPU Scheduler
-+ * Copyright (C) 2021-2024 Masahito Suzuki <firelzrd@gmail.com>
- */
- #include <linux/energy_model.h>
- #include <linux/mmap_lock.h>
-@@ -64,20 +67,125 @@
- * 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)
-+ * (EEVDF 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: max(1 sec / HZ, min_base_slice) constant, units: nanoseconds)
-+ * (EEVDF default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds)
- */
-+#ifdef CONFIG_SCHED_BORE
-+unsigned int sysctl_sched_base_slice = 1000000000ULL / HZ;
-+static unsigned int configured_sched_base_slice = 1000000000ULL / HZ;
-+unsigned int sysctl_sched_min_base_slice = 2000000ULL;
-+#else // !CONFIG_SCHED_BORE
- unsigned int sysctl_sched_base_slice = 750000ULL;
- static unsigned int normalized_sysctl_sched_base_slice = 750000ULL;
-+#endif // CONFIG_SCHED_BORE
-
- const_debug unsigned int sysctl_sched_migration_cost = 500000UL;
-
-+#ifdef CONFIG_SCHED_BORE
-+u8 __read_mostly sched_bore = 1;
-+u8 __read_mostly sched_burst_smoothness_long = 1;
-+u8 __read_mostly sched_burst_smoothness_short = 0;
-+u8 __read_mostly sched_burst_fork_atavistic = 2;
-+u8 __read_mostly sched_burst_penalty_offset = 22;
-+uint __read_mostly sched_burst_penalty_scale = 1280;
-+uint __read_mostly sched_burst_cache_lifetime = 60000000;
-+static int __maybe_unused sixty_four = 64;
-+static int __maybe_unused maxval_12_bits = 4095;
-+
-+#define MAX_BURST_PENALTY (39U <<2)
-+
-+static inline u32 log2plus1_u64_u32f8(u64 v) {
-+ u32 msb = fls64(v);
-+ s32 excess_bits = msb - 9;
-+ u8 fractional = (0 <= excess_bits)? v >> excess_bits: v << -excess_bits;
-+ return msb << 8 | fractional;
-+}
-+
-+static inline u32 calc_burst_penalty(u64 burst_time) {
-+ u32 greed, tolerance, penalty, scaled_penalty;
-+
-+ greed = log2plus1_u64_u32f8(burst_time);
-+ tolerance = sched_burst_penalty_offset << 8;
-+ penalty = max(0, (s32)greed - (s32)tolerance);
-+ scaled_penalty = penalty * sched_burst_penalty_scale >> 16;
-+
-+ return min(MAX_BURST_PENALTY, scaled_penalty);
-+}
-+
-+static inline u64 scale_slice(u64 delta, struct sched_entity *se) {
-+ return mul_u64_u32_shr(delta, sched_prio_to_wmult[se->burst_score], 22);
-+}
-+
-+static inline u64 __unscale_slice(u64 delta, u8 score) {
-+ return mul_u64_u32_shr(delta, sched_prio_to_weight[score], 10);
-+}
-+
-+static inline u64 unscale_slice(u64 delta, struct sched_entity *se) {
-+ return __unscale_slice(delta, se->burst_score);
-+}
-+
-+void reweight_task(struct task_struct *p, int prio);
-+
-+static void update_burst_score(struct sched_entity *se) {
-+ if (!entity_is_task(se)) return;
-+ struct task_struct *p = task_of(se);
-+ u8 prio = p->static_prio - MAX_RT_PRIO;
-+ u8 prev_prio = min(39, prio + se->burst_score);
-+
-+ se->burst_score = se->burst_penalty >> 2;
-+
-+ u8 new_prio = min(39, prio + se->burst_score);
-+ if (new_prio != prev_prio)
-+ reweight_task(p, new_prio);
-+}
-+
-+static void update_burst_penalty(struct sched_entity *se) {
-+ se->curr_burst_penalty = calc_burst_penalty(se->burst_time);
-+ se->burst_penalty = max(se->prev_burst_penalty, se->curr_burst_penalty);
-+ update_burst_score(se);
-+}
-+
-+static inline u32 binary_smooth(u32 new, u32 old) {
-+ int increment = new - old;
-+ return (0 <= increment)?
-+ old + ( increment >> (int)sched_burst_smoothness_long):
-+ old - (-increment >> (int)sched_burst_smoothness_short);
-+}
-+
-+static void restart_burst(struct sched_entity *se) {
-+ se->burst_penalty = se->prev_burst_penalty =
-+ binary_smooth(se->curr_burst_penalty, se->prev_burst_penalty);
-+ se->curr_burst_penalty = 0;
-+ se->burst_time = 0;
-+ update_burst_score(se);
-+}
-+
-+static void restart_burst_rescale_deadline(struct sched_entity *se) {
-+ s64 vscaled, wremain, vremain = se->deadline - se->vruntime;
-+ u8 prev_score = se->burst_score;
-+ restart_burst(se);
-+ if (prev_score > se->burst_score) {
-+ wremain = __unscale_slice(abs(vremain), prev_score);
-+ vscaled = scale_slice(wremain, se);
-+ if (unlikely(vremain < 0))
-+ vscaled = -vscaled;
-+ se->deadline = se->vruntime + vscaled;
-+ }
-+}
-+#endif // CONFIG_SCHED_BORE
-+
- int sched_thermal_decay_shift;
- static int __init setup_sched_thermal_decay_shift(char *str)
- {
-@@ -137,6 +245,69 @@ static unsigned int sysctl_numa_balancing_promote_rate_limit = 65536;
-
- #ifdef CONFIG_SYSCTL
- static struct ctl_table sched_fair_sysctls[] = {
-+#ifdef CONFIG_SCHED_BORE
-+ {
-+ .procname = "sched_bore",
-+ .data = &sched_bore,
-+ .maxlen = sizeof(u8),
-+ .mode = 0644,
-+ .proc_handler = proc_dou8vec_minmax,
-+ .extra1 = SYSCTL_ONE,
-+ .extra2 = SYSCTL_ONE,
-+ },
-+ {
-+ .procname = "sched_burst_smoothness_long",
-+ .data = &sched_burst_smoothness_long,
-+ .maxlen = sizeof(u8),
-+ .mode = 0644,
-+ .proc_handler = proc_dou8vec_minmax,
-+ .extra1 = SYSCTL_ZERO,
-+ .extra2 = SYSCTL_ONE,
-+ },
-+ {
-+ .procname = "sched_burst_smoothness_short",
-+ .data = &sched_burst_smoothness_short,
-+ .maxlen = sizeof(u8),
-+ .mode = 0644,
-+ .proc_handler = proc_dou8vec_minmax,
-+ .extra1 = SYSCTL_ZERO,
-+ .extra2 = SYSCTL_ONE,
-+ },
-+ {
-+ .procname = "sched_burst_fork_atavistic",
-+ .data = &sched_burst_fork_atavistic,
-+ .maxlen = sizeof(u8),
-+ .mode = 0644,
-+ .proc_handler = proc_dou8vec_minmax,
-+ .extra1 = SYSCTL_ZERO,
-+ .extra2 = SYSCTL_THREE,
-+ },
-+ {
-+ .procname = "sched_burst_penalty_offset",
-+ .data = &sched_burst_penalty_offset,
-+ .maxlen = sizeof(u8),
-+ .mode = 0644,
-+ .proc_handler = proc_dou8vec_minmax,
-+ .extra1 = SYSCTL_ZERO,
-+ .extra2 = &sixty_four,
-+ },
-+ {
-+ .procname = "sched_burst_penalty_scale",
-+ .data = &sched_burst_penalty_scale,
-+ .maxlen = sizeof(uint),
-+ .mode = 0644,
-+ .proc_handler = proc_douintvec_minmax,
-+ .extra1 = SYSCTL_ZERO,
-+ .extra2 = &maxval_12_bits,
-+ },
-+ {
-+ .procname = "sched_burst_cache_lifetime",
-+ .data = &sched_burst_cache_lifetime,
-+ .maxlen = sizeof(uint),
-+ .mode = 0644,
-+ .proc_handler = proc_douintvec,
-+ },
-+#endif // CONFIG_SCHED_BORE
- #ifdef CONFIG_CFS_BANDWIDTH
- {
- .procname = "sched_cfs_bandwidth_slice_us",
-@@ -195,6 +366,13 @@ static inline void update_load_set(struct load_weight *lw, unsigned long w)
- *
- * This idea comes from the SD scheduler of Con Kolivas:
- */
-+#ifdef CONFIG_SCHED_BORE
-+static void update_sysctl(void) {
-+ sysctl_sched_base_slice =
-+ max(sysctl_sched_min_base_slice, configured_sched_base_slice);
-+}
-+void sched_update_min_base_slice(void) { update_sysctl(); }
-+#else // !CONFIG_SCHED_BORE
- static unsigned int get_update_sysctl_factor(void)
- {
- unsigned int cpus = min_t(unsigned int, num_online_cpus(), 8);
-@@ -225,6 +403,7 @@ static void update_sysctl(void)
- SET_SYSCTL(sched_base_slice);
- #undef SET_SYSCTL
- }
-+#endif // CONFIG_SCHED_BORE
-
- void __init sched_init_granularity(void)
- {
-@@ -704,6 +883,9 @@ static void update_entity_lag(struct cfs_rq *cfs_rq, struct sched_entity *se)
- lag = avg_vruntime(cfs_rq) - se->vruntime;
-
- limit = calc_delta_fair(max_t(u64, 2*se->slice, TICK_NSEC), se);
-+#ifdef CONFIG_SCHED_BORE
-+ limit >>= 1;
-+#endif // CONFIG_SCHED_BORE
- se->vlag = clamp(lag, -limit, limit);
- }
-
-@@ -955,6 +1137,7 @@ struct sched_entity *__pick_last_entity(struct cfs_rq *cfs_rq)
- * Scheduling class statistics methods:
- */
- #ifdef CONFIG_SMP
-+#if !defined(CONFIG_SCHED_BORE)
- int sched_update_scaling(void)
- {
- unsigned int factor = get_update_sysctl_factor();
-@@ -966,6 +1149,7 @@ int sched_update_scaling(void)
-
- return 0;
- }
-+#endif // CONFIG_SCHED_BORE
- #endif
- #endif
-
-@@ -1165,7 +1349,13 @@ static void update_curr(struct cfs_rq *cfs_rq)
- if (unlikely(delta_exec <= 0))
- return;
-
-+#ifdef CONFIG_SCHED_BORE
-+ curr->burst_time += delta_exec;
-+ update_burst_penalty(curr);
-+ curr->vruntime += max(1ULL, calc_delta_fair(delta_exec, curr));
-+#else // !CONFIG_SCHED_BORE
- curr->vruntime += calc_delta_fair(delta_exec, curr);
-+#endif // CONFIG_SCHED_BORE
- update_deadline(cfs_rq, curr);
- update_min_vruntime(cfs_rq);
-
-@@ -3671,10 +3861,9 @@ dequeue_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *se) { }
- #endif
-
- static void reweight_eevdf(struct cfs_rq *cfs_rq, struct sched_entity *se,
-- unsigned long weight)
-+ unsigned long weight, u64 avruntime)
- {
- unsigned long old_weight = se->load.weight;
-- u64 avruntime = avg_vruntime(cfs_rq);
- s64 vlag, vslice;
-
- /*
-@@ -3782,11 +3971,13 @@ static void reweight_entity(struct cfs_rq *cfs_rq, struct sched_entity *se,
- {
- bool curr = cfs_rq->curr == se;
-
-+ if (curr)
-+ update_curr(cfs_rq);
-+ u64 avruntime = avg_vruntime(cfs_rq);
-+
- if (se->on_rq) {
- /* commit outstanding execution time */
-- if (curr)
-- update_curr(cfs_rq);
-- else
-+ if (!curr)
- __dequeue_entity(cfs_rq, se);
- update_load_sub(&cfs_rq->load, se->load.weight);
- }
-@@ -3799,7 +3990,7 @@ static void reweight_entity(struct cfs_rq *cfs_rq, struct sched_entity *se,
- */
- se->vlag = div_s64(se->vlag * se->load.weight, weight);
- } else {
-- reweight_eevdf(cfs_rq, se, weight);
-+ reweight_eevdf(cfs_rq, se, weight, avruntime);
- }
-
- update_load_set(&se->load, weight);
-@@ -5171,6 +5362,9 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags)
- *
- * EEVDF: placement strategy #1 / #2
- */
-+#ifdef CONFIG_SCHED_BORE
-+ if (se->vlag)
-+#endif // CONFIG_SCHED_BORE
- if (sched_feat(PLACE_LAG) && cfs_rq->nr_running) {
- struct sched_entity *curr = cfs_rq->curr;
- unsigned long load;
-@@ -6803,6 +6997,14 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags)
- bool was_sched_idle = sched_idle_rq(rq);
-
- util_est_dequeue(&rq->cfs, p);
-+#ifdef CONFIG_SCHED_BORE
-+ if (task_sleep) {
-+ cfs_rq = cfs_rq_of(se);
-+ if (cfs_rq->curr == se)
-+ update_curr(cfs_rq);
-+ restart_burst(se);
-+ }
-+#endif // CONFIG_SCHED_BORE
-
- for_each_sched_entity(se) {
- cfs_rq = cfs_rq_of(se);
-@@ -8552,16 +8754,25 @@ static void yield_task_fair(struct rq *rq)
- /*
- * Are we the only task in the tree?
- */
-+#if !defined(CONFIG_SCHED_BORE)
- if (unlikely(rq->nr_running == 1))
- return;
-
- clear_buddies(cfs_rq, se);
-+#endif // CONFIG_SCHED_BORE
-
- update_rq_clock(rq);
- /*
- * Update run-time statistics of the 'current'.
- */
- update_curr(cfs_rq);
-+#ifdef CONFIG_SCHED_BORE
-+ restart_burst_rescale_deadline(se);
-+ if (unlikely(rq->nr_running == 1))
-+ return;
-+
-+ clear_buddies(cfs_rq, se);
-+#endif // CONFIG_SCHED_BORE
- /*
- * Tell update_rq_clock() that we've just updated,
- * so we don't do microscopic update in schedule()
-@@ -12651,6 +12862,9 @@ static void task_fork_fair(struct task_struct *p)
- curr = cfs_rq->curr;
- if (curr)
- update_curr(cfs_rq);
-+#ifdef CONFIG_SCHED_BORE
-+ update_burst_score(se);
-+#endif // CONFIG_SCHED_BORE
- place_entity(cfs_rq, se, ENQUEUE_INITIAL);
- rq_unlock(rq, &rf);
- }
-diff --git a/kernel/sched/features.h b/kernel/sched/features.h
-index 143f55df89..3f0fe409f5 100644
---- a/kernel/sched/features.h
-+++ b/kernel/sched/features.h
-@@ -6,7 +6,11 @@
- */
- SCHED_FEAT(PLACE_LAG, true)
- SCHED_FEAT(PLACE_DEADLINE_INITIAL, true)
-+#ifdef CONFIG_SCHED_BORE
-+SCHED_FEAT(RUN_TO_PARITY, false)
-+#else // !CONFIG_SCHED_BORE
- SCHED_FEAT(RUN_TO_PARITY, true)
-+#endif // CONFIG_SCHED_BORE
-
- /*
- * Prefer to schedule the task we woke last (assuming it failed
-diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
-index 001fe047bd..da3ad1d4e1 100644
---- a/kernel/sched/sched.h
-+++ b/kernel/sched/sched.h
-@@ -1965,7 +1965,11 @@ static inline void dirty_sched_domain_sysctl(int cpu)
- }
- #endif
-
-+#ifdef CONFIG_SCHED_BORE
-+extern void sched_update_min_base_slice(void);
-+#else // !CONFIG_SCHED_BORE
- extern int sched_update_scaling(void);
-+#endif // CONFIG_SCHED_BORE
-
- static inline const struct cpumask *task_user_cpus(struct task_struct *p)
- {
-@@ -2552,6 +2556,9 @@ extern const_debug unsigned int sysctl_sched_nr_migrate;
- extern const_debug unsigned int sysctl_sched_migration_cost;
-
- extern unsigned int sysctl_sched_base_slice;
-+#ifdef CONFIG_SCHED_BORE
-+extern unsigned int sysctl_sched_min_base_slice;
-+#endif // CONFIG_SCHED_BORE
-
- #ifdef CONFIG_SCHED_DEBUG
- extern int sysctl_resched_latency_warn_ms;
---
-2.34.1
-
diff --git a/sys-kernel/linux-image-redcore/files/6.8-amd64.config b/sys-kernel/linux-image-redcore/files/6.8-amd64.config
index 3c8ea00f..da53b1c0 100644
--- a/sys-kernel/linux-image-redcore/files/6.8-amd64.config
+++ b/sys-kernel/linux-image-redcore/files/6.8-amd64.config
@@ -1,6 +1,6 @@
#
# Automatically generated file; DO NOT EDIT.
-# Linux/x86 6.8.7-redcore-r1 Kernel Configuration
+# Linux/x86 6.8.9-redcore Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="gcc (Gentoo Hardened 13.2.0-r15 p3) 13.2.0"
CONFIG_CC_IS_GCC=y
@@ -233,7 +233,6 @@ CONFIG_USER_NS_UNPRIVILEGED=y
CONFIG_PID_NS=y
CONFIG_NET_NS=y
CONFIG_CHECKPOINT_RESTORE=y
-CONFIG_SCHED_BORE=y
CONFIG_SCHED_AUTOGROUP=y
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
@@ -524,7 +523,7 @@ CONFIG_CALL_PADDING=y
CONFIG_HAVE_CALL_THUNKS=y
CONFIG_CALL_THUNKS=y
CONFIG_PREFIX_SYMBOLS=y
-CONFIG_SPECULATION_MITIGATIONS=y
+CONFIG_CPU_MITIGATIONS=y
CONFIG_PAGE_TABLE_ISOLATION=y
CONFIG_RETPOLINE=y
CONFIG_RETHUNK=y
@@ -750,6 +749,7 @@ CONFIG_AS_SHA256_NI=y
CONFIG_AS_TPAUSE=y
CONFIG_AS_GFNI=y
CONFIG_AS_WRUSS=y
+CONFIG_ARCH_CONFIGURES_CPU_MITIGATIONS=y
#
# General architecture-dependent options