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Update patches/0002-bore-cachy.patch

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ferreo 2024-11-04 21:29:17 +01:00
parent ccc77beb6e
commit 7dba735d0a
1 changed files with 206 additions and 186 deletions
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392
patches/0003-bore-cachy-ext.patch → patches/0002-bore-cachy.patch
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@ -1,31 +1,30 @@
From e91f8d993bc2b1a1424cb2f5a931fe8f31eb97b9 Mon Sep 17 00:00:00 2001
From 81c203e0e6bc5c0c9e53e2c81122c6387afe309e Mon Sep 17 00:00:00 2001
From: Eric Naim <dnaim@cachyos.org>
Date: Tue, 8 Oct 2024 23:02:55 +0800
Subject: [PATCH] bore-cachy-ext
Date: Sun, 3 Nov 2024 10:16:41 +0800
Subject: [PATCH] bore-cachy
Signed-off-by: Eric Naim <dnaim@cachyos.org>
---
include/linux/sched.h | 20 +-
include/linux/sched.h | 17 ++
include/linux/sched/bore.h | 37 ++++
init/Kconfig | 17 ++
kernel/Kconfig.hz | 17 ++
kernel/Kconfig.hz | 43 +++++
kernel/fork.c | 5 +
kernel/sched/Makefile | 1 +
kernel/sched/bore.c | 381 +++++++++++++++++++++++++++++++++++++
kernel/sched/core.c | 7 +
kernel/sched/debug.c | 60 +++++-
kernel/sched/fair.c | 102 ++++++++--
kernel/sched/features.h | 4 +
kernel/sched/sched.h | 7 +
12 files changed, 640 insertions(+), 18 deletions(-)
kernel/sched/debug.c | 67 ++++++-
kernel/sched/fair.c | 104 ++++++++--
kernel/sched/sched.h | 16 ++
11 files changed, 677 insertions(+), 18 deletions(-)
create mode 100644 include/linux/sched/bore.h
create mode 100644 kernel/sched/bore.c
diff --git a/include/linux/sched.h b/include/linux/sched.h
index c5a7901b2580..bab2d659b667 100644
index bb343136ddd0..c86185f87e7b 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -537,6 +537,14 @@ struct sched_statistics {
@@ -538,6 +538,14 @@ struct sched_statistics {
#endif /* CONFIG_SCHEDSTATS */
} ____cacheline_aligned;
@ -40,15 +39,7 @@ index c5a7901b2580..bab2d659b667 100644
struct sched_entity {
/* For load-balancing: */
struct load_weight load;
@@ -545,12 +553,22 @@ struct sched_entity {
u64 min_vruntime;
struct list_head group_node;
- unsigned int on_rq;
+ unsigned char on_rq;
+ unsigned char rel_deadline;
u64 exec_start;
@@ -557,6 +565,15 @@ struct sched_entity {
u64 sum_exec_runtime;
u64 prev_sum_exec_runtime;
u64 vruntime;
@ -108,10 +99,10 @@ index 000000000000..12a613a94ff0
+#endif // CONFIG_SCHED_BORE
+#endif // _LINUX_SCHED_BORE_H
diff --git a/init/Kconfig b/init/Kconfig
index e1a88d48d652..3aea8e43c360 100644
index 504e8a7c4e2a..43daffa3ee03 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1327,6 +1327,23 @@ config CHECKPOINT_RESTORE
@@ -1360,6 +1360,23 @@ config CHECKPOINT_RESTORE
If unsure, say N here.
@ -136,10 +127,10 @@ index e1a88d48d652..3aea8e43c360 100644
bool "Automatic process group scheduling"
select CGROUPS
diff --git a/kernel/Kconfig.hz b/kernel/Kconfig.hz
index 0f78364efd4f..83a6b919ab29 100644
index 0f78364efd4f..b412ea29d0b3 100644
--- a/kernel/Kconfig.hz
+++ b/kernel/Kconfig.hz
@@ -79,5 +79,22 @@ config HZ
@@ -79,5 +79,48 @@ config HZ
default 750 if HZ_750
default 1000 if HZ_1000
@ -159,11 +150,37 @@ index 0f78364efd4f..83a6b919ab29 100644
+ Setting this value too high can cause the system to boot with
+ an unnecessarily large base slice, resulting in high scheduling
+ latency and poor system responsiveness.
+
+config MIGRATION_COST_BASE_NS
+ int "Default value for migration_cost_base_ns"
+ default 500000
+ help
+ The BORE Scheduler automatically calculates the optimal
+ migration_cost_ns using the following equation:
+
+ migration_cost_ns =
+ migration_cost_base_ns + ilog2(ncpus) * migration_cost_step_ns
+
+ This option sets the default migration_cost_base_ns
+ to be used in the automatic calculation.
+
+config MIGRATION_COST_STEP_NS
+ int "Default value for migration_cost_step_ns"
+ default 0
+ help
+ The BORE Scheduler automatically calculates the optimal
+ migration_cost_ns using the following equation:
+
+ migration_cost_ns =
+ migration_cost_base_ns + ilog2(ncpus) * migration_cost_step_ns
+
+ This option sets the default migration_cost_step_ns
+ to be used in the automatic calculation.
+
config SCHED_HRTICK
def_bool HIGH_RES_TIMERS
diff --git a/kernel/fork.c b/kernel/fork.c
index eb290420d926..8f060c73877b 100644
index 671b85ce818b..370cfd9886d3 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -116,6 +116,8 @@
@ -175,7 +192,7 @@ index eb290420d926..8f060c73877b 100644
#include <trace/events/sched.h>
#define CREATE_TRACE_POINTS
@@ -2351,6 +2353,9 @@ __latent_entropy struct task_struct *copy_process(
@@ -2350,6 +2352,9 @@ __latent_entropy struct task_struct *copy_process(
retval = sched_fork(clone_flags, p);
if (retval)
goto bad_fork_cleanup_policy;
@ -582,7 +599,7 @@ index 000000000000..cd7e8a8d6075
+#endif // CONFIG_SYSCTL
+#endif // CONFIG_SCHED_BORE
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 8ae04bd4a5a4..4aa992f99c36 100644
index dbfb5717d6af..9aa89fa98c90 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -97,6 +97,8 @@
@ -594,12 +611,12 @@ index 8ae04bd4a5a4..4aa992f99c36 100644
EXPORT_TRACEPOINT_SYMBOL_GPL(ipi_send_cpu);
EXPORT_TRACEPOINT_SYMBOL_GPL(ipi_send_cpumask);
@@ -8290,6 +8292,11 @@ void __init sched_init(void)
@@ -8377,6 +8379,11 @@ void __init sched_init(void)
BUG_ON(!sched_class_above(&ext_sched_class, &idle_sched_class));
#endif
+#ifdef CONFIG_SCHED_BORE
+ printk(KERN_INFO "BORE (Burst-Oriented Response Enhancer) CPU Scheduler modification 5.6.1 by Masahito Suzuki");
+ printk(KERN_INFO "BORE (Burst-Oriented Response Enhancer) CPU Scheduler modification 5.7.2 by Masahito Suzuki");
+ init_task_bore(&init_task);
+#endif // CONFIG_SCHED_BORE
+
@ -607,63 +624,66 @@ index 8ae04bd4a5a4..4aa992f99c36 100644
#ifdef CONFIG_FAIR_GROUP_SCHED
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index c057ef46c5f8..3cab39e34824 100644
index f4035c7a0fa1..ddd03cd517c7 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -167,7 +167,52 @@ static const struct file_operations sched_feat_fops = {
@@ -167,7 +167,55 @@ 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,
+#define DEFINE_SYSCTL_SCHED_FUNC(name, update_func) \
+static ssize_t sched_##name##_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; \
+\
+ sysctl_sched_##name = value; \
+ sched_update_##update_func(); \
+\
+ *ppos += cnt; \
+ return cnt; \
+} \
+\
+static int sched_##name##_show(struct seq_file *m, void *v) \
+{ \
+ seq_printf(m, "%d\n", sysctl_sched_##name); \
+ return 0; \
+} \
+\
+static int sched_##name##_open(struct inode *inode, struct file *filp) \
+{ \
+ return single_open(filp, sched_##name##_show, NULL); \
+} \
+\
+static const struct file_operations sched_##name##_fops = { \
+ .open = sched_##name##_open, \
+ .write = sched_##name##_write, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release, \
+};
+
+DEFINE_SYSCTL_SCHED_FUNC(min_base_slice, min_base_slice)
+DEFINE_SYSCTL_SCHED_FUNC(migration_cost_base, migration_cost)
+DEFINE_SYSCTL_SCHED_FUNC(migration_cost_step, migration_cost)
+#undef DEFINE_SYSCTL_SCHED_FUNC
+#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 = {
@@ -213,7 +261,7 @@ static const struct file_operations sched_scaling_fops = {
.llseek = seq_lseek,
.release = single_release,
};
@ -672,13 +692,13 @@ index c057ef46c5f8..3cab39e34824 100644
#endif /* SMP */
#ifdef CONFIG_PREEMPT_DYNAMIC
@@ -347,13 +392,20 @@ static __init int sched_init_debug(void)
@@ -504,14 +552,25 @@ 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);
+ debugfs_create_u32("base_slice_ns", 0444, 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
@ -687,13 +707,18 @@ index c057ef46c5f8..3cab39e34824 100644
debugfs_create_u32("latency_warn_once", 0644, debugfs_sched, &sysctl_resched_latency_warn_once);
#ifdef CONFIG_SMP
+#if !defined(CONFIG_SCHED_BORE)
+#ifdef CONFIG_SCHED_BORE
+ debugfs_create_file("migration_cost_base_ns", 0644, debugfs_sched, NULL, &sched_migration_cost_base_fops);
+ debugfs_create_file("migration_cost_step_ns", 0644, debugfs_sched, NULL, &sched_migration_cost_step_fops);
+ debugfs_create_u32("migration_cost_ns", 0444, debugfs_sched, &sysctl_sched_migration_cost);
+#else // !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);
+#endif // CONFIG_SCHED_BORE
debugfs_create_u32("nr_migrate", 0644, debugfs_sched, &sysctl_sched_nr_migrate);
@@ -596,6 +648,9 @@ print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
mutex_lock(&sched_domains_mutex);
@@ -755,6 +814,9 @@ 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)));
@ -701,9 +726,9 @@ index c057ef46c5f8..3cab39e34824 100644
+ 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));
SEQ_printf(m, " %d %d", task_node(p), task_numa_group_id(p));
#endif
@@ -1069,6 +1124,9 @@ void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns,
@@ -1243,6 +1305,9 @@ void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns,
P(se.load.weight);
#ifdef CONFIG_SMP
@ -714,7 +739,7 @@ index c057ef46c5f8..3cab39e34824 100644
P(se.avg.runnable_sum);
P(se.avg.util_sum);
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index a36e37a674e8..603d72b9e6e8 100644
index b55fa314df37..b8c4649c72e8 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -55,6 +55,8 @@
@ -726,13 +751,13 @@ index a36e37a674e8..603d72b9e6e8 100644
/*
* The initial- and re-scaling of tunables is configurable
*
@@ -64,28 +66,31 @@
@@ -64,28 +66,38 @@
* SCHED_TUNABLESCALING_LOG - scaled logarithmically, *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))
+ * 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;
@ -744,17 +769,18 @@ index a36e37a674e8..603d72b9e6e8 100644
* 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)
+ * BORE : base_slice = minimum multiple of nsecs_per_tick >= min_base_slice
+ * (default min_base_slice = 2000000 constant, units: nanoseconds)
+ * EEVDF: default 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds
*/
-#ifdef CONFIG_CACHY
-unsigned int sysctl_sched_base_slice = 350000ULL;
-static unsigned int normalized_sysctl_sched_base_slice = 350000ULL;
-#else
+#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 = CONFIG_MIN_BASE_SLICE_NS;
+const static unsigned int nsecs_per_tick = 1000000000ULL / HZ;
+unsigned int sysctl_sched_min_base_slice = CONFIG_MIN_BASE_SLICE_NS;
+__read_mostly uint sysctl_sched_base_slice = nsecs_per_tick;
+#else // !CONFIG_SCHED_BORE
unsigned int sysctl_sched_base_slice = 750000ULL;
static unsigned int normalized_sysctl_sched_base_slice = 750000ULL;
@ -764,12 +790,18 @@ index a36e37a674e8..603d72b9e6e8 100644
-#ifdef CONFIG_CACHY
-const_debug unsigned int sysctl_sched_migration_cost = 300000UL;
-#else
+#ifdef CONFIG_SCHED_BORE
+unsigned int sysctl_sched_migration_cost_base = CONFIG_MIGRATION_COST_BASE_NS;
+unsigned int sysctl_sched_migration_cost_step = CONFIG_MIGRATION_COST_STEP_NS;
+__read_mostly uint sysctl_sched_migration_cost = CONFIG_MIGRATION_COST_BASE_NS;
+#else // !CONFIG_SCHED_BORE
const_debug unsigned int sysctl_sched_migration_cost = 500000UL;
-#endif
+#endif // CONFIG_SCHED_BORE
static int __init setup_sched_thermal_decay_shift(char *str)
{
@@ -130,12 +135,8 @@ int __weak arch_asym_cpu_priority(int cpu)
@@ -130,12 +142,8 @@ int __weak arch_asym_cpu_priority(int cpu)
*
* (default: 5 msec, units: microseconds)
*/
@ -782,34 +814,48 @@ index a36e37a674e8..603d72b9e6e8 100644
#ifdef CONFIG_NUMA_BALANCING
/* Restrict the NUMA promotion throughput (MB/s) for each target node. */
@@ -201,6 +202,18 @@ static inline void update_load_set(struct load_weight *lw, unsigned long w)
@@ -201,6 +209,18 @@ 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) {
+ unsigned int base_slice = configured_sched_base_slice;
+ unsigned int min_base_slice = sysctl_sched_min_base_slice;
+
+ if (min_base_slice)
+ base_slice *= DIV_ROUND_UP(min_base_slice, base_slice);
+
+ sysctl_sched_base_slice = base_slice;
+static void auto_calculate_base_slice(void) {
+ sysctl_sched_base_slice = nsecs_per_tick *
+ max(1UL, DIV_ROUND_UP(sysctl_sched_min_base_slice, nsecs_per_tick));
+}
+void sched_update_min_base_slice(void) { update_sysctl(); }
+static void auto_calculate_migration_cost(void) {
+ sysctl_sched_migration_cost = sysctl_sched_migration_cost_base +
+ ilog2(num_online_cpus()) * sysctl_sched_migration_cost_step;
+}
+void sched_update_min_base_slice(void) { auto_calculate_base_slice(); }
+void sched_update_migration_cost(void) { auto_calculate_migration_cost(); }
+#else // !CONFIG_SCHED_BORE
static unsigned int get_update_sysctl_factor(void)
{
unsigned int cpus = min_t(unsigned int, num_online_cpus(), 8);
@@ -231,6 +244,7 @@ static void update_sysctl(void)
SET_SYSCTL(sched_base_slice);
#undef SET_SYSCTL
@@ -221,15 +241,21 @@ static unsigned int get_update_sysctl_factor(void)
return factor;
}
+#endif // CONFIG_SCHED_BORE
void __init sched_init_granularity(void)
static void update_sysctl(void)
{
@@ -708,6 +722,9 @@ static s64 entity_lag(u64 avruntime, struct sched_entity *se)
+#ifdef CONFIG_SCHED_BORE
+ auto_calculate_base_slice();
+ auto_calculate_migration_cost();
+#else // !CONFIG_SCHED_BORE
unsigned int factor = get_update_sysctl_factor();
#define SET_SYSCTL(name) \
(sysctl_##name = (factor) * normalized_sysctl_##name)
SET_SYSCTL(sched_base_slice);
#undef SET_SYSCTL
+#endif // CONFIG_SCHED_BORE
}
void __init sched_init_granularity(void)
@@ -708,6 +734,9 @@ static s64 entity_lag(u64 avruntime, struct sched_entity *se)
vlag = avruntime - se->vruntime;
limit = calc_delta_fair(max_t(u64, 2*se->slice, TICK_NSEC), se);
@ -819,7 +865,7 @@ index a36e37a674e8..603d72b9e6e8 100644
return clamp(vlag, -limit, limit);
}
@@ -909,6 +926,10 @@ static struct sched_entity *pick_eevdf(struct cfs_rq *cfs_rq)
@@ -939,6 +968,10 @@ static struct sched_entity *pick_eevdf(struct cfs_rq *cfs_rq)
* until it gets a new slice. See the HACK in set_next_entity().
*/
if (sched_feat(RUN_TO_PARITY) && curr && curr->vlag == curr->deadline)
@ -830,7 +876,7 @@ index a36e37a674e8..603d72b9e6e8 100644
return curr;
/* Pick the leftmost entity if it's eligible */
@@ -967,6 +988,7 @@ struct sched_entity *__pick_last_entity(struct cfs_rq *cfs_rq)
@@ -997,6 +1030,7 @@ struct sched_entity *__pick_last_entity(struct cfs_rq *cfs_rq)
* Scheduling class statistics methods:
*/
#ifdef CONFIG_SMP
@ -838,7 +884,7 @@ index a36e37a674e8..603d72b9e6e8 100644
int sched_update_scaling(void)
{
unsigned int factor = get_update_sysctl_factor();
@@ -978,6 +1000,7 @@ int sched_update_scaling(void)
@@ -1008,6 +1042,7 @@ int sched_update_scaling(void)
return 0;
}
@ -846,7 +892,7 @@ index a36e37a674e8..603d72b9e6e8 100644
#endif
#endif
@@ -1178,6 +1201,10 @@ static void update_curr(struct cfs_rq *cfs_rq)
@@ -1240,6 +1275,10 @@ static void update_curr(struct cfs_rq *cfs_rq)
if (unlikely(delta_exec <= 0))
return;
@ -855,9 +901,9 @@ index a36e37a674e8..603d72b9e6e8 100644
+ update_burst_penalty(curr);
+#endif // CONFIG_SCHED_BORE
curr->vruntime += calc_delta_fair(delta_exec, curr);
update_deadline(cfs_rq, curr);
resched = update_deadline(cfs_rq, curr);
update_min_vruntime(cfs_rq);
@@ -3804,7 +3831,7 @@ static void reweight_eevdf(struct sched_entity *se, u64 avruntime,
@@ -3884,7 +3923,7 @@ static void reweight_eevdf(struct sched_entity *se, u64 avruntime,
se->deadline = avruntime + vslice;
}
@ -866,7 +912,7 @@ index a36e37a674e8..603d72b9e6e8 100644
unsigned long weight)
{
bool curr = cfs_rq->curr == se;
@@ -5212,6 +5239,9 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags)
@@ -5293,6 +5332,9 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags)
*
* EEVDF: placement strategy #1 / #2
*/
@ -876,15 +922,11 @@ index a36e37a674e8..603d72b9e6e8 100644
if (sched_feat(PLACE_LAG) && cfs_rq->nr_running) {
struct sched_entity *curr = cfs_rq->curr;
unsigned long load;
@@ -5282,6 +5312,16 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags)
se->vruntime = vruntime - lag;
+ if (sched_feat(PLACE_REL_DEADLINE) && se->rel_deadline) {
+ se->deadline += se->vruntime;
+ se->rel_deadline = 0;
+ return;
+ }
@@ -5368,7 +5410,11 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags)
se->rel_deadline = 0;
return;
}
-
+#ifdef CONFIG_SCHED_BORE
+ else if (likely(sched_bore))
+ vslice >>= !!(flags & sched_deadline_boost_mask);
@ -893,42 +935,22 @@ index a36e37a674e8..603d72b9e6e8 100644
/*
* When joining the competition; the existing tasks will be,
* on average, halfway through their slice, as such start tasks
@@ -5391,6 +5431,7 @@ static __always_inline void return_cfs_rq_runtime(struct cfs_rq *cfs_rq);
static void
dequeue_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags)
{
+ bool sleep = flags & DEQUEUE_SLEEP;
int action = UPDATE_TG;
if (entity_is_task(se) && task_on_rq_migrating(task_of(se)))
@@ -5418,6 +5459,11 @@ dequeue_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags)
clear_buddies(cfs_rq, se);
update_entity_lag(cfs_rq, se);
+ if (sched_feat(PLACE_REL_DEADLINE) && !sleep) {
+ se->deadline -= se->vruntime;
+ se->rel_deadline = 1;
+ }
+
if (se != cfs_rq->curr)
__dequeue_entity(cfs_rq, se);
se->on_rq = 0;
@@ -6869,6 +6915,14 @@ 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);
@@ -7109,6 +7155,14 @@ static int dequeue_entities(struct rq *rq, struct sched_entity *se, int flags)
p = task_of(se);
h_nr_running = 1;
idle_h_nr_running = task_has_idle_policy(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);
+ }
+ 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);
@@ -8651,16 +8705,25 @@ static void yield_task_fair(struct rq *rq)
} else {
cfs_rq = group_cfs_rq(se);
slice = cfs_rq_min_slice(cfs_rq);
@@ -9018,16 +9072,25 @@ static void yield_task_fair(struct rq *rq)
/*
* Are we the only task in the tree?
*/
@ -954,17 +976,17 @@ index a36e37a674e8..603d72b9e6e8 100644
/*
* Tell update_rq_clock() that we've just updated,
* so we don't do microscopic update in schedule()
@@ -12725,6 +12788,9 @@ static void task_fork_fair(struct task_struct *p)
curr = cfs_rq->curr;
if (curr)
update_curr(cfs_rq);
@@ -13079,6 +13142,9 @@ static void task_tick_fair(struct rq *rq, struct task_struct *curr, int queued)
static void task_fork_fair(struct task_struct *p)
{
set_task_max_allowed_capacity(p);
+#ifdef CONFIG_SCHED_BORE
+ update_burst_score(se);
+ update_burst_score(&p->se);
+#endif // CONFIG_SCHED_BORE
place_entity(cfs_rq, se, ENQUEUE_INITIAL);
rq_unlock(rq, &rf);
}
@@ -12837,6 +12903,10 @@ static void attach_task_cfs_rq(struct task_struct *p)
/*
@@ -13189,6 +13255,10 @@ static void attach_task_cfs_rq(struct task_struct *p)
static void switched_from_fair(struct rq *rq, struct task_struct *p)
{
@ -975,46 +997,44 @@ index a36e37a674e8..603d72b9e6e8 100644
detach_task_cfs_rq(p);
}
diff --git a/kernel/sched/features.h b/kernel/sched/features.h
index 143f55df890b..e97b7b68bdd3 100644
--- a/kernel/sched/features.h
+++ b/kernel/sched/features.h
@@ -6,6 +6,10 @@
*/
SCHED_FEAT(PLACE_LAG, true)
SCHED_FEAT(PLACE_DEADLINE_INITIAL, true)
+/*
+ * Preserve relative virtual deadline on 'migration'.
+ */
+SCHED_FEAT(PLACE_REL_DEADLINE, true)
SCHED_FEAT(RUN_TO_PARITY, true)
/*
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 48d893de632b..62e7e9e5fd9c 100644
index 991226ab5250..043ee801bb19 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -2065,7 +2065,11 @@ static inline void update_sched_domain_debugfs(void) { }
@@ -2074,7 +2074,12 @@ static inline void update_sched_domain_debugfs(void) { }
static inline void dirty_sched_domain_sysctl(int cpu) { }
#endif
+#ifdef CONFIG_SCHED_BORE
+extern void sched_update_min_base_slice(void);
+extern void sched_update_migration_cost(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)
{
@@ -2738,6 +2742,9 @@ extern const_debug unsigned int sysctl_sched_nr_migrate;
extern const_debug unsigned int sysctl_sched_migration_cost;
@@ -2792,9 +2797,20 @@ extern void wakeup_preempt(struct rq *rq, struct task_struct *p, int flags);
#endif
extern const_debug unsigned int sysctl_sched_nr_migrate;
+#ifdef CONFIG_SCHED_BORE
+extern unsigned int sysctl_sched_migration_cost_base;
+extern unsigned int sysctl_sched_migration_cost_step;
+extern __read_mostly uint sysctl_sched_migration_cost;
+#else // !CONFIG_SCHED_BORE
extern const_debug unsigned int sysctl_sched_migration_cost;
+#endif // CONFIG_SCHED_BORE
extern unsigned int sysctl_sched_base_slice;
+#ifdef CONFIG_SCHED_BORE
+extern unsigned int sysctl_sched_min_base_slice;
+extern __read_mostly uint sysctl_sched_base_slice;
+#else // !CONFIG_SCHED_BORE
extern unsigned int sysctl_sched_base_slice;
+#endif // CONFIG_SCHED_BORE
#ifdef CONFIG_SCHED_DEBUG
extern int sysctl_resched_latency_warn_ms;
--
2.47.0