sys-kernel/xanmod-sources:bump to 5.10.3-r1

Package-Manager: Portage-3.0.12, Repoman-3.0.2
Signed-off-by: Andreas Westman Dorcsak <hedmoo@yahoo.com>

sys-kernel/xanmod-sources/files/interactivity_score_fix_xanmod.patch

@@ -0,0 +1,94 @@
+diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
+index 335efc1c6f06..f81f2f38659e 100644
+--- a/kernel/sched/fair.c
++++ b/kernel/sched/fair.c
+@@ -43,6 +43,7 @@ unsigned int sysctl_sched_latency			= 6000000ULL;
+ static unsigned int normalized_sysctl_sched_latency	= 6000000ULL;
+ 
+ #ifdef CONFIG_CACULE_SCHED
++int cacule_max_lifetime					= 30000; // in ms
+ int interactivity_factor				= 32768;
+ #endif
+ 
+@@ -591,22 +592,25 @@ static void update_min_vruntime(struct cfs_rq *cfs_rq)
+ static inline unsigned int
+ calc_interactivity(u64 now, struct cacule_node *se)
+ {
+-	u64 l_se, vr_se, sleep_se, u64_factor;
++	u64 l_se, vr_se, sleep_se = 1ULL, u64_factor;
+ 	unsigned int score_se;
+ 
+ 	/*
+ 	 * in case of vruntime==0, logical OR with 1 would
+ 	 * make sure that the least sig. bit is 1
+ 	 */
+-	l_se		= (now + 1ULL) - se->cacule_start_time;
++	l_se		= now - se->cacule_start_time;
+ 	vr_se		= se->vruntime		| 1;
+-	sleep_se	= (l_se - vr_se)	| 1;
+ 	u64_factor	= interactivity_factor;
+ 
+-	if (sleep_se > vr_se)
++	/* safety check */
++	if (likely(l_se > vr_se))
++		sleep_se = (l_se - vr_se) | 1;
++
++	if (sleep_se >= vr_se)
+ 		score_se = u64_factor / (sleep_se / vr_se);
+ 	else
+-		score_se = (u64_factor / (vr_se / sleep_se)) + u64_factor;
++		score_se = (u64_factor << 1) - (u64_factor / (vr_se / sleep_se));
+ 
+ 	return score_se;
+ }
+@@ -964,6 +968,42 @@ static void update_tg_load_avg(struct cfs_rq *cfs_rq, int force)
+ }
+ #endif /* CONFIG_SMP */
+ 
++#ifdef CONFIG_CACULE_SCHED
++static void reset_lifetime(u64 now, struct sched_entity *se)
++{
++	struct cacule_node *cn;
++	u64 max_life_ns, life_time;
++	s64 diff;
++
++	/*
++	 * left shift 20 bits is approximately = * 1000000
++	 * we don't need the precision of life time
++	 * Ex. for 30s, with left shift (20bits) == 31.457s
++	 */
++	max_life_ns	= ((u64) cacule_max_lifetime) << 20;
++
++	for_each_sched_entity(se) {
++		cn		= &se->cacule_node;
++		life_time	= now - cn->cacule_start_time;
++		diff		= life_time - max_life_ns;
++
++		if (unlikely(diff > 0)) {
++			// multiply life_time by 8 for more precision
++			u64 old_hrrn_x8	= life_time / ((cn->vruntime >> 3) | 1);
++
++			// reset life to half max_life (i.e ~15s)
++			cn->cacule_start_time = now - (max_life_ns >> 1);
++
++			// avoid division by zero
++			if (old_hrrn_x8 == 0) old_hrrn_x8 = 1;
++
++			// reset vruntime based on old hrrn ratio
++			cn->vruntime = (max_life_ns << 2) / old_hrrn_x8;
++		}
++	}
++}
++#endif /* CONFIG_CACULE_SCHED */
++
+ /*
+  * Update the current task's runtime statistics.
+  */
+@@ -991,6 +1031,7 @@ static void update_curr(struct cfs_rq *cfs_rq)
+ 
+ #ifdef CONFIG_CACULE_SCHED
+ 	curr->cacule_node.vruntime += calc_delta_fair(delta_exec, curr);
++	reset_lifetime(sched_clock(), curr);
+ #else
+ 	curr->vruntime += calc_delta_fair(delta_exec, curr);
+ 	update_min_vruntime(cfs_rq);

sys-kernel/xanmod-sources/metadata.xml

@@ -10,8 +10,9 @@
 		<name>Andreas Westman Dorcsak</name>
 	</maintainer>
 	<use>
-		<flag name="cacule"> CacULE is a newer version of Cachy. The CacULE CPU scheduler is based on interactivity score mechanism. The interactivity score is inspired by the ULE scheduler (FreeBSD scheduler). </flag>
-	</use>
+        <flag name="cacule"> CacULE is a newer version of Cachy. The CacULE CPU scheduler is based on interactivity score mechanism. The interactivity score is inspired by the ULE scheduler (FreeBSD scheduler). </flag>
+        <flag name="experimental"> adding experimental patches for CacULE. </flag>
+    </use>
 	<upstream>
 		<remote-id type="github">xanmod/linux</remote-id>
 	</upstream>

sys-kernel/xanmod-sources/xanmod-sources-5.10.3-r1.ebuild

@@ -0,0 +1,58 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="6"
+K_WANT_GENPATCHES="base extras"
+K_GENPATCHES_VER="1"
+K_SECURITY_UNSUPPORTED="1"
+K_NOSETEXTRAVERSION="1"
+ETYPE="sources"
+inherit kernel-2-src-prepare-overlay
+detect_version
+
+DESCRIPTION="Full XanMod sources with cacule option and including the Gentoo patchset "
+HOMEPAGE="https://xanmod.org"
+LICENSE+=" CDDL"
+KEYWORDS="~amd64"
+IUSE="cacule experimental"
+XANMOD_VERSION="1"
+XANMOD_URI="https://github.com/xanmod/linux/releases/download/"
+SRC_URI="
+	${KERNEL_BASE_URI}/linux-${KV_MAJOR}.${KV_MINOR}.tar.xz
+	cacule? ( ${XANMOD_URI}/${OKV}-xanmod${XANMOD_VERSION}-cacule/patch-${OKV}-xanmod${XANMOD_VERSION}-cacule.xz  )
+	!cacule? ( ${XANMOD_URI}/${OKV}-xanmod${XANMOD_VERSION}/patch-${OKV}-xanmod${XANMOD_VERSION}.xz  )
+	${GENPATCHES_URI}
+"
+
+src_unpack() {
+UNIPATCH_LIST_DEFAULT=""
+	if use cacule; then
+		UNIPATCH_LIST="${DISTDIR}/patch-${OKV}-xanmod${XANMOD_VERSION}-cacule.xz "
+	else
+		UNIPATCH_LIST="${DISTDIR}/patch-${OKV}-xanmod${XANMOD_VERSION}.xz "
+	fi
+	kernel-2-src-prepare-overlay_src_unpack
+}
+
+src_prepare() {
+
+	if use cacule; then
+		eapply "${FILESDIR}/localversion.patch"
+		eapply "${FILESDIR}/interactivity_score_fix_xanmod.patch"
+	fi
+
+	if use experimental ; then
+		eapply "${FILESDIR}/no_reset_on_migration.patch"
+	fi
+
+	kernel-2-src-prepare-overlay_src_prepare
+
+	rm "${S}"/.config || die
+
+}
+
+pkg_postinst() {
+	elog "MICROCODES"
+	elog "Use xanmod-sources with microcodes"
+	elog "Read https://wiki.gentoo.org/wiki/Intel_microcode"
+}