diff options
Diffstat (limited to 'sys-kernel/linux-image-redcore-lts/files')
8 files changed, 7 insertions, 1985 deletions
diff --git a/sys-kernel/linux-image-redcore-lts/files/5.15-0001-linux5.15.y-bore5.1.0.patch b/sys-kernel/linux-image-redcore-lts/files/5.15-0001-linux5.15.y-bore5.1.0.patch deleted file mode 100644 index 365ef1f2..00000000 --- a/sys-kernel/linux-image-redcore-lts/files/5.15-0001-linux5.15.y-bore5.1.0.patch +++ /dev/null @@ -1,530 +0,0 @@ -From 60a78397ed1cce95e3d1b22b0ea4adf9f2141de7 Mon Sep 17 00:00:00 2001 -From: Masahito S <firelzrd@gmail.com> -Date: Thu, 28 Mar 2024 00:47:09 +0900 -Subject: [PATCH] linux5.15.y-bore5.1.0 - ---- - include/linux/sched.h | 10 +++ - init/Kconfig | 17 +++++ - kernel/sched/core.c | 143 ++++++++++++++++++++++++++++++++++++++++++ - kernel/sched/debug.c | 3 + - kernel/sched/fair.c | 122 ++++++++++++++++++++++++++++++----- - kernel/sysctl.c | 76 ++++++++++++++++++++++ - 6 files changed, 357 insertions(+), 14 deletions(-) - -diff --git a/include/linux/sched.h b/include/linux/sched.h -index 7bfc2b45cd..7058ceab13 100644 ---- a/include/linux/sched.h -+++ b/include/linux/sched.h -@@ -535,6 +535,16 @@ struct sched_entity { - u64 sum_exec_runtime; - u64 vruntime; - u64 prev_sum_exec_runtime; -+#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 - - u64 nr_migrations; - -diff --git a/init/Kconfig b/init/Kconfig -index dafc3ba6fa..64bcc7e6e5 100644 ---- a/init/Kconfig -+++ b/init/Kconfig -@@ -1266,6 +1266,23 @@ 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 25b8ea9116..937c0abb86 100644 ---- a/kernel/sched/core.c -+++ b/kernel/sched/core.c -@@ -4221,6 +4221,138 @@ 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. -@@ -4237,6 +4369,9 @@ 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 - INIT_LIST_HEAD(&p->se.group_node); - - #ifdef CONFIG_FAIR_GROUP_SCHED -@@ -4469,6 +4604,9 @@ 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); - } - -@@ -9381,6 +9519,11 @@ void __init sched_init(void) - BUG_ON(&dl_sched_class + 1 != &stop_sched_class); - #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 5ffe16ff03..de5345d03b 100644 ---- a/kernel/sched/debug.c -+++ b/kernel/sched/debug.c -@@ -545,6 +545,9 @@ print_task(struct seq_file *m, struct rq *rq, struct task_struct *p) - SPLIT_NS(p->se.sum_exec_runtime), - SPLIT_NS(schedstat_val_or_zero(p->stats.sum_sleep_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 -diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c -index fd8b565664..8c4c060510 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 "sched.h" - -@@ -84,6 +87,74 @@ static unsigned int normalized_sysctl_sched_wakeup_granularity = 1000000UL; - - const_debug unsigned int sysctl_sched_migration_cost = 500000UL; - -+#ifdef CONFIG_SCHED_BORE -+bool __read_mostly sched_bore = 1; -+bool __read_mostly sched_burst_smoothness_long = 1; -+bool __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; -+ -+#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 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); -+} -+#endif // CONFIG_SCHED_BORE -+ - int sched_thermal_decay_shift; - static int __init setup_sched_thermal_decay_shift(char *str) - { -@@ -645,7 +716,6 @@ static inline u64 calc_delta_fair(u64 delta, struct sched_entity *se) - { - if (unlikely(se->load.weight != NICE_0_LOAD)) - delta = __calc_delta(delta, NICE_0_LOAD, &se->load); -- - return delta; - } - -@@ -848,7 +918,13 @@ static void update_curr(struct cfs_rq *cfs_rq) - curr->sum_exec_runtime += delta_exec; - schedstat_add(cfs_rq->exec_clock, delta_exec); - -+#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_min_vruntime(cfs_rq); - - if (entity_is_task(curr)) { -@@ -5907,6 +5983,14 @@ 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); -@@ -7660,24 +7744,31 @@ 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 - -- if (curr->policy != SCHED_BATCH) { -- update_rq_clock(rq); -- /* -- * Update run-time statistics of the 'current'. -- */ -- update_curr(cfs_rq); -- /* -- * Tell update_rq_clock() that we've just updated, -- * so we don't do microscopic update in schedule() -- * and double the fastpath cost. -- */ -- rq_clock_skip_update(rq); -- } -+ update_rq_clock(rq); -+ /* -+ * Update run-time statistics of the 'current'. -+ */ -+ update_curr(cfs_rq); -+#ifdef CONFIG_SCHED_BORE -+ restart_burst(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() -+ * and double the fastpath cost. -+ */ -+ rq_clock_skip_update(rq); - - set_skip_buddy(se); - } -@@ -11486,6 +11577,9 @@ static void task_fork_fair(struct task_struct *p) - update_curr(cfs_rq); - se->vruntime = curr->vruntime; - } -+#ifdef CONFIG_SCHED_BORE -+ update_burst_score(se); -+#endif // CONFIG_SCHED_BORE - place_entity(cfs_rq, se, 1); - - if (sysctl_sched_child_runs_first && curr && entity_before(curr, se)) { -diff --git a/kernel/sysctl.c b/kernel/sysctl.c -index 928798f89c..27d197c737 100644 ---- a/kernel/sysctl.c -+++ b/kernel/sysctl.c -@@ -133,6 +133,19 @@ static int minolduid; - static int ngroups_max = NGROUPS_MAX; - static const int cap_last_cap = CAP_LAST_CAP; - -+#ifdef CONFIG_SCHED_BORE -+extern u8 sched_bore; -+extern u8 sched_burst_smoothness_long; -+extern u8 sched_burst_smoothness_short; -+extern u8 sched_burst_fork_atavistic; -+extern u8 sched_burst_penalty_offset; -+extern uint sched_burst_penalty_scale; -+extern uint sched_burst_cache_lifetime; -+static int __maybe_unused three = 3; -+static int __maybe_unused sixty_four = 64; -+static int __maybe_unused maxval_12_bits = 4095; -+#endif // CONFIG_SCHED_BORE -+ - /* - * This is needed for proc_doulongvec_minmax of sysctl_hung_task_timeout_secs - * and hung_task_check_interval_secs -@@ -1775,6 +1788,69 @@ int proc_do_static_key(struct ctl_table *table, int write, - } - - static struct ctl_table kern_table[] = { -+#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 = &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 - { - .procname = "sched_child_runs_first", - .data = &sysctl_sched_child_runs_first, --- -2.34.1 - diff --git a/sys-kernel/linux-image-redcore-lts/files/5.15-0002-constgran-vanilla-max.patch b/sys-kernel/linux-image-redcore-lts/files/5.15-0002-constgran-vanilla-max.patch deleted file mode 100644 index aa20644d..00000000 --- a/sys-kernel/linux-image-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 - diff --git a/sys-kernel/linux-image-redcore-lts/files/5.15-amd64.config b/sys-kernel/linux-image-redcore-lts/files/5.15-amd64.config index ccc4693f..91e0a873 100644 --- a/sys-kernel/linux-image-redcore-lts/files/5.15-amd64.config +++ b/sys-kernel/linux-image-redcore-lts/files/5.15-amd64.config @@ -1,6 +1,6 @@ # # Automatically generated file; DO NOT EDIT. -# Linux/x86 5.15.157-redcore-lts Kernel Configuration +# Linux/x86 5.15.158-redcore-lts Kernel Configuration # CONFIG_CC_VERSION_TEXT="gcc (Gentoo Hardened 13.2.0-r15 p3) 13.2.0" CONFIG_CC_IS_GCC=y @@ -223,7 +223,6 @@ 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_SYSFS_DEPRECATED is not set CONFIG_RELAY=y @@ -500,7 +499,7 @@ CONFIG_LIVEPATCH=y CONFIG_CC_HAS_SLS=y CONFIG_CC_HAS_RETURN_THUNK=y -CONFIG_SPECULATION_MITIGATIONS=y +CONFIG_CPU_MITIGATIONS=y CONFIG_PAGE_TABLE_ISOLATION=y CONFIG_RETPOLINE=y CONFIG_RETHUNK=y @@ -708,6 +707,7 @@ CONFIG_AS_AVX512=y CONFIG_AS_SHA1_NI=y CONFIG_AS_SHA256_NI=y CONFIG_AS_TPAUSE=y +CONFIG_ARCH_CONFIGURES_CPU_MITIGATIONS=y # # General architecture-dependent options diff --git a/sys-kernel/linux-image-redcore-lts/files/6.1-0001-linux6.1.y-bore5.1.0.patch b/sys-kernel/linux-image-redcore-lts/files/6.1-0001-linux6.1.y-bore5.1.0.patch deleted file mode 100644 index 10fdbde1..00000000 --- a/sys-kernel/linux-image-redcore-lts/files/6.1-0001-linux6.1.y-bore5.1.0.patch +++ /dev/null @@ -1,507 +0,0 @@ -From b81d0a14e0383fb596314320f9853e9c416545bb Mon Sep 17 00:00:00 2001 -From: Masahito S <firelzrd@gmail.com> -Date: Thu, 28 Mar 2024 00:38:44 +0900 -Subject: [PATCH] linux6.1.y-bore5.1.0 - ---- - include/linux/sched.h | 10 +++ - init/Kconfig | 17 ++++ - kernel/sched/core.c | 143 ++++++++++++++++++++++++++++++++ - kernel/sched/debug.c | 3 + - kernel/sched/fair.c | 187 ++++++++++++++++++++++++++++++++++++++---- - 5 files changed, 346 insertions(+), 14 deletions(-) - -diff --git a/include/linux/sched.h b/include/linux/sched.h -index 0cac69902e..159733cf83 100644 ---- a/include/linux/sched.h -+++ b/include/linux/sched.h -@@ -555,6 +555,16 @@ struct sched_entity { - u64 sum_exec_runtime; - u64 vruntime; - u64 prev_sum_exec_runtime; -+#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 - - u64 nr_migrations; - -diff --git a/init/Kconfig b/init/Kconfig -index 1487046402..31d5bf4f5e 100644 ---- a/init/Kconfig -+++ b/init/Kconfig -@@ -1280,6 +1280,23 @@ 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 18a4f8f28a..c9270d4a77 100644 ---- a/kernel/sched/core.c -+++ b/kernel/sched/core.c -@@ -4368,6 +4368,138 @@ 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. -@@ -4384,6 +4516,9 @@ 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 - INIT_LIST_HEAD(&p->se.group_node); - - #ifdef CONFIG_FAIR_GROUP_SCHED -@@ -4689,6 +4824,9 @@ 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); - } - -@@ -9675,6 +9813,11 @@ 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 1637b65ba0..a0157ac1be 100644 ---- a/kernel/sched/debug.c -+++ b/kernel/sched/debug.c -@@ -547,6 +547,9 @@ 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 -diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c -index 2558ab9033..138e1901ea 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> -@@ -126,6 +129,76 @@ static unsigned int normalized_sysctl_sched_wakeup_granularity = 1000000UL; - - 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 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); -+} -+#endif // CONFIG_SCHED_BORE -+ - int sched_thermal_decay_shift; - static int __init setup_sched_thermal_decay_shift(char *str) - { -@@ -180,6 +253,69 @@ static unsigned int sysctl_sched_cfs_bandwidth_slice = 5000UL; - - #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 - { - .procname = "sched_child_runs_first", - .data = &sysctl_sched_child_runs_first, -@@ -695,7 +831,6 @@ static inline u64 calc_delta_fair(u64 delta, struct sched_entity *se) - { - if (unlikely(se->load.weight != NICE_0_LOAD)) - delta = __calc_delta(delta, NICE_0_LOAD, &se->load); -- - return delta; - } - -@@ -905,7 +1040,13 @@ static void update_curr(struct cfs_rq *cfs_rq) - curr->sum_exec_runtime += delta_exec; - schedstat_add(cfs_rq->exec_clock, delta_exec); - -+#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_min_vruntime(cfs_rq); - - if (entity_is_task(curr)) { -@@ -6171,6 +6312,14 @@ 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); -@@ -7939,24 +8088,31 @@ 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 - -- if (curr->policy != SCHED_BATCH) { -- update_rq_clock(rq); -- /* -- * Update run-time statistics of the 'current'. -- */ -- update_curr(cfs_rq); -- /* -- * Tell update_rq_clock() that we've just updated, -- * so we don't do microscopic update in schedule() -- * and double the fastpath cost. -- */ -- rq_clock_skip_update(rq); -- } -+ update_rq_clock(rq); -+ /* -+ * Update run-time statistics of the 'current'. -+ */ -+ update_curr(cfs_rq); -+#ifdef CONFIG_SCHED_BORE -+ restart_burst(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() -+ * and double the fastpath cost. -+ */ -+ rq_clock_skip_update(rq); - - set_skip_buddy(se); - } -@@ -11869,6 +12025,9 @@ static void task_fork_fair(struct task_struct *p) - update_curr(cfs_rq); - se->vruntime = curr->vruntime; - } -+#ifdef CONFIG_SCHED_BORE -+ update_burst_score(se); -+#endif // CONFIG_SCHED_BORE - place_entity(cfs_rq, se, 1); - - if (sysctl_sched_child_runs_first && curr && entity_before(curr, se)) { --- -2.34.1 - diff --git a/sys-kernel/linux-image-redcore-lts/files/6.1-0002-constgran-vanilla-max.patch b/sys-kernel/linux-image-redcore-lts/files/6.1-0002-constgran-vanilla-max.patch deleted file mode 100644 index aa20644d..00000000 --- a/sys-kernel/linux-image-redcore-lts/files/6.1-0002-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 - diff --git a/sys-kernel/linux-image-redcore-lts/files/6.1-amd64.config b/sys-kernel/linux-image-redcore-lts/files/6.1-amd64.config index 1a2598aa..1c265137 100644 --- a/sys-kernel/linux-image-redcore-lts/files/6.1-amd64.config +++ b/sys-kernel/linux-image-redcore-lts/files/6.1-amd64.config @@ -1,6 +1,6 @@ # # Automatically generated file; DO NOT EDIT. -# Linux/x86 6.1.87-redcore-lts-r1 Kernel Configuration +# Linux/x86 6.1.89-redcore-lts Kernel Configuration # CONFIG_CC_VERSION_TEXT="gcc (Gentoo Hardened 13.2.0-r15 p3) 13.2.0" CONFIG_CC_IS_GCC=y @@ -231,7 +231,6 @@ 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_SYSFS_DEPRECATED is not set CONFIG_RELAY=y diff --git a/sys-kernel/linux-image-redcore-lts/files/6.6-0001-linux6.6.y-bore5.1.0.patch b/sys-kernel/linux-image-redcore-lts/files/6.6-0001-linux6.6.y-bore5.1.0.patch deleted file mode 100644 index 9ec609a8..00000000 --- a/sys-kernel/linux-image-redcore-lts/files/6.6-0001-linux6.6.y-bore5.1.0.patch +++ /dev/null @@ -1,768 +0,0 @@ -From 8a12c22fd48d20301f22591bb36587499136717d Mon Sep 17 00:00:00 2001 -From: Masahito S <firelzrd@gmail.com> -Date: Mon, 22 Apr 2024 04:12:58 +0900 -Subject: [PATCH] linux6.6.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 77f01ac385..20fe8ee925 100644 ---- a/include/linux/sched.h -+++ b/include/linux/sched.h -@@ -559,6 +559,16 @@ 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 6d35728b94..eb18e8f304 100644 ---- a/init/Kconfig -+++ b/init/Kconfig -@@ -1258,6 +1258,23 @@ 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 a854b71836..40bf030523 100644 ---- a/kernel/sched/core.c -+++ b/kernel/sched/core.c -@@ -4488,6 +4488,138 @@ 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. -@@ -4504,6 +4636,9 @@ 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); -@@ -4823,6 +4958,9 @@ 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); - } - -@@ -9922,6 +10060,11 @@ 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 4c3d0d9f3d..02c8816c26 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 d336af9cba..3ef80eeb5e 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> -@@ -66,17 +69,29 @@ - * 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 - - /* - * After fork, child runs first. If set to 0 (default) then -@@ -86,6 +101,99 @@ unsigned int sysctl_sched_child_runs_first __read_mostly; - - 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) - { -@@ -145,6 +253,69 @@ 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 - { - .procname = "sched_child_runs_first", - .data = &sysctl_sched_child_runs_first, -@@ -210,6 +381,13 @@ 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); -@@ -240,6 +418,7 @@ static void update_sysctl(void) - SET_SYSCTL(sched_base_slice); - #undef SET_SYSCTL - } -+#endif // CONFIG_SCHED_BORE - - void __init sched_init_granularity(void) - { -@@ -715,6 +894,9 @@ 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); - } - -@@ -996,6 +1178,7 @@ 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(); -@@ -1007,6 +1190,7 @@ int sched_update_scaling(void) - - return 0; - } -+#endif // CONFIG_SCHED_BORE - #endif - #endif - -@@ -1173,7 +1357,13 @@ static void update_curr(struct cfs_rq *cfs_rq) - curr->sum_exec_runtime += delta_exec; - schedstat_add(cfs_rq->exec_clock, delta_exec); - -+#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); - -@@ -3627,10 +3817,9 @@ 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; - - /* -@@ -3738,11 +3927,13 @@ 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); - } -@@ -3755,7 +3946,7 @@ 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); -@@ -5076,6 +5267,9 @@ 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; -@@ -6698,6 +6892,14 @@ 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); -@@ -8429,16 +8631,25 @@ 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() -@@ -12515,6 +12726,9 @@ 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 f770168230..9979586b9a 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 0484627240..71cc8c0795 100644 ---- a/kernel/sched/sched.h -+++ b/kernel/sched/sched.h -@@ -1945,7 +1945,11 @@ 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) - { -@@ -2525,6 +2529,9 @@ 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-lts/files/6.6-amd64.config b/sys-kernel/linux-image-redcore-lts/files/6.6-amd64.config index 681af895..2f5f2864 100644 --- a/sys-kernel/linux-image-redcore-lts/files/6.6-amd64.config +++ b/sys-kernel/linux-image-redcore-lts/files/6.6-amd64.config @@ -1,6 +1,6 @@ # # Automatically generated file; DO NOT EDIT. -# Linux/x86 6.6.28-redcore-lts-r1 Kernel Configuration +# Linux/x86 6.6.30-redcore-lts Kernel Configuration # CONFIG_CC_VERSION_TEXT="gcc (Gentoo Hardened 13.2.0-r15 p3) 13.2.0" CONFIG_CC_IS_GCC=y @@ -231,7 +231,6 @@ 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 @@ -520,7 +519,7 @@ 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 @@ -742,6 +741,7 @@ 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 |