feat: P0-P6 kernel scheduler + relibc threading comprehensive implementation

P0-P2: Barrier SMP, sigmask/pthread_kill races, robust mutexes, RT scheduling, POSIX sched API
P3: PerCpuSched struct, per-CPU wiring, work stealing, load balancing, initial placement
P4: 64-shard futex table, REQUEUE, PI futexes (LOCK_PI/UNLOCK_PI/TRYLOCK_PI), robust futexes, vruntime tracking, min-vruntime SCHED_OTHER selection
P5: setpriority/getpriority, pthread_setaffinity_np, pthread_setname_np, pthread_setschedparam (Redox)
P6: Cache-affine scheduling (last_cpu + vruntime bonus), NUMA topology kernel hints + numad userspace daemon

Stability fixes: make_consistent stores 0 (dead TID fix), cond.rs error propagation, SPIN_COUNT adaptive spinning, Sys::open &str fix, PI futex CAS race, proc.rs lock ordering, barrier destroy

Patches: 33 kernel + 58 relibc patches, all tracked in recipes
Docs: KERNEL-SCHEDULER-MULTITHREAD-IMPROVEMENT-PLAN.md updated, SCHEDULER-REVIEW-FINAL.md created
Architecture: NUMA topology parsing stays userspace (numad daemon), kernel stores lightweight NumaTopology hints
This commit is contained in:
2026-04-30 18:21:48 +01:00
parent 55d00c3a24
commit 34360e1e4f
70 changed files with 15268 additions and 10 deletions
+2
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@@ -6,6 +6,8 @@ patches = [
"P0-workspace-add-bootstrap.patch",
"P0-bootstrap-workspace-fix.patch",
"P2-i2c-gpio-ucsi-drivers.patch",
"P3-pcid-bind-scheme.patch",
"P3-acpi-wave12-hardening.patch",
]
[build]
+1 -1
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@@ -1,6 +1,6 @@
[source]
git = "https://gitlab.redox-os.org/redox-os/kernel.git"
patches = ["redox.patch", "P0-canary.patch", "P1-memory-map-overflow.patch", "../../../local/patches/kernel/P4-supplementary-groups.patch"]
patches = ["redox.patch", "P0-canary.patch", "P1-memory-map-overflow.patch", "../../../local/patches/kernel/P4-supplementary-groups.patch", "../../../local/patches/kernel/P4-s3-suspend-resume.patch", "../../../local/patches/kernel/P5-sched-policy-context.patch", "../../../local/patches/kernel/P5-sched-rt-policy.patch", "../../../local/patches/kernel/P5-proc-setschedpolicy.patch", "../../../local/patches/kernel/P5-scheme-sched-id.patch", "../../../local/patches/kernel/P5-context-mod-sched.patch", "../../../local/patches/kernel/P6-vruntime-context.patch", "../../../local/patches/kernel/P6-percpu-runqueues.patch", "../../../local/patches/kernel/P6-futex-sharding.patch", "../../../local/patches/kernel/P6-vruntime-switch.patch", "../../../local/patches/kernel/P7-cache-affine-context.patch", "../../../local/patches/kernel/P7-cache-affine-switch.patch", "../../../local/patches/kernel/P7-proc-setname.patch", "../../../local/patches/kernel/P7-proc-setpriority.patch", "../../../local/patches/kernel/P8-futex-requeue.patch", "../../../local/patches/kernel/P8-futex-pi.patch", "../../../local/patches/kernel/P8-futex-robust.patch", "../../../local/patches/kernel/P8-percpu-wiring.patch", "../../../local/patches/kernel/P8-percpu-sched.patch", "../../../local/patches/kernel/P9-proc-lock-ordering.patch", "../../../local/patches/kernel/P9-futex-pi-cas-fix.patch"]
[build]
template = "custom"
+10
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@@ -22,6 +22,7 @@ patches = [
"../../../local/patches/relibc/P3-select-not-epoll-timeout.patch",
"../../../local/patches/relibc/P3-tls-get-addr-panic-fix.patch",
"../../../local/patches/relibc/P3-pthread-yield.patch",
"../../../local/patches/relibc/P3-barrier-smp-futex.patch",
"../../../local/patches/relibc/P3-secure-getenv.patch",
"../../../local/patches/relibc/P3-getentropy.patch",
"../../../local/patches/relibc/P3-dup3.patch",
@@ -38,10 +39,19 @@ patches = [
"../../../local/patches/relibc/P3-header-mod-spawn-threads.patch",
"../../../local/patches/relibc/P3-spawn.patch",
"../../../local/patches/relibc/P3-threads.patch",
"../../../local/patches/relibc/P3-pthread-signal-races.patch",
"../../../local/patches/relibc/P3-sysv-ipc.patch",
"../../../local/patches/relibc/P3-sysv-sem-impl.patch",
"../../../local/patches/relibc/P3-sysv-shm-impl.patch",
"../../../local/patches/relibc/P4-setgroups-getgroups.patch",
"../../../local/patches/relibc/P5-robust-mutexes.patch",
"../../../local/patches/relibc/P5-sched-api.patch",
"../../../local/patches/relibc/P5-pthread-sigmask-race.patch",
"../../../local/patches/relibc/P4-setgroups-unsafe-fix.patch",
"../../../local/patches/relibc/P7-setpriority.patch",
"../../../local/patches/relibc/P7-pthread-affinity.patch",
"../../../local/patches/relibc/P7-pthread-setname.patch",
"../../../local/patches/relibc/P9-spin-and-barrier.patch",
]
[build]
+1
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@@ -0,0 +1 @@
../../local/recipes/drivers/ehcid
+1
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@@ -0,0 +1 @@
../../local/recipes/drivers/ohcid
+1
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@@ -0,0 +1 @@
../../local/recipes/drivers/redox-driver-core
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@@ -0,0 +1 @@
../../local/recipes/drivers/redox-driver-pci
+1
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@@ -0,0 +1 @@
../../local/recipes/drivers/uhcid
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@@ -0,0 +1 @@
../../local/recipes/drivers/usb-core
+1
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@@ -0,0 +1 @@
../../local/recipes/kde/kf6-pty
+132 -1
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@@ -22,6 +22,137 @@ script = """
DYNAMIC_STATIC_INIT
COOKBOOK_CONFIGURE_FLAGS+=(
ac_cv_have_decl_program_invocation_name=no
ac_cv_objext=o
ac_cv_prog_cc_c_o=yes
ac_cv_exeext=
acl_cv_rpath=done
)
# Restore the pristine configure scripts on every build, then layer our Redox
# cross-build fixes on top. Host autoconf 2.72 regenerates an invalid top-level
# configure for this recipe in our environment, so we patch the shipped script
# instead of regenerating it.
python3 - <<'PYEOF'
import os
import tarfile
from pathlib import Path
source_dir = Path(os.environ["COOKBOOK_SOURCE"])
source_tar = Path(os.environ["COOKBOOK_RECIPE"]) / "source.tar"
with tarfile.open(source_tar) as tf:
for relative in ("configure", "libcharset/configure"):
member = next(m for m in tf.getmembers() if m.name.endswith("/" + relative))
target = source_dir / relative
target.write_text(tf.extractfile(member).read().decode("utf-8", errors="replace"))
PYEOF
# Upgrade bundled libtool glue in both the top-level tree and nested
# libcharset tree to the current host libtool (2.6.0) so generated libtool
# helpers match the host ltmain.sh version.
for subdir in "${COOKBOOK_SOURCE}" "${COOKBOOK_SOURCE}/libcharset"; do
if [ -d "${subdir}" ]; then
mkdir -p "${subdir}/m4" "${subdir}/build-aux"
cp -f /usr/share/aclocal/libtool.m4 "${subdir}/m4/"
cp -f /usr/share/aclocal/ltoptions.m4 "${subdir}/m4/"
cp -f /usr/share/aclocal/ltsugar.m4 "${subdir}/m4/"
cp -f /usr/share/aclocal/ltversion.m4 "${subdir}/m4/"
cp -f /usr/share/aclocal/lt~obsolete.m4 "${subdir}/m4/"
cp -f /usr/share/libtool/build-aux/ltmain.sh "${subdir}/build-aux/"
fi
done
if [ -d "${COOKBOOK_SOURCE}/libcharset" ]; then
(
cd "${COOKBOOK_SOURCE}/libcharset"
cp -f ../srcm4/relocatable.m4 m4/
cp -f ../srcm4/codeset.m4 m4/
cp -f ../srcm4/fcntl-o.m4 m4/
cp -f ../srcm4/visibility.m4 m4/
)
fi
# libcharset templates currently keep @HAVE_VISIBILITY@ unsubstituted on our
# Redox cross build. Patch the source templates before configure so every
# generated header gets a stable fallback value.
for template in \
"${COOKBOOK_SOURCE}/libcharset/include/libcharset.h.build.in" \
"${COOKBOOK_SOURCE}/libcharset/include/localcharset.h.build.in" \
"${COOKBOOK_SOURCE}/include/iconv.h.build.in"
do
if [ -f "${template}" ]; then
sed -i 's/@HAVE_VISIBILITY@/0/g' "${template}"
fi
done
export CPP="${GNU_TARGET}-gcc -E"
# Force cross mode in the shipped top-level configure and keep the rest of the
# generated shell structure intact.
sed -i '0,/cross_compiling=maybe/s//cross_compiling=yes/' "${COOKBOOK_SOURCE}/configure"
python3 - <<'PYEOF'
from pathlib import Path
import os
for relative in ('configure', 'libcharset/configure'):
path = Path(os.environ['COOKBOOK_SOURCE']) / relative
lines = path.read_text().splitlines()
for i, line in enumerate(lines):
if "macro_version='2.4.7'" in line or "macro_version='2.5.4-redox-9510'" in line:
lines[i] = "macro_version='2.6.0'"
if "macro_revision='2.4.7'" in line or "macro_revision='2.5.4-redox-9510'" in line:
lines[i] = "macro_revision='2.6.0'"
if "grep -v '^ *+' conftest.err >conftest.er1" in line:
lines[i] = "test -f conftest.err && grep -v '^ *+' conftest.err > conftest.er1.tmp && mv -f conftest.er1.tmp conftest.er1 || :"
if 'cat conftest.er1 >&5' in line:
lines[i] = 'test -f conftest.er1 && cat conftest.er1 >&5 || :'
if 'mv -f conftest.er1 conftest.err' in line:
lines[i] = 'test -f conftest.er1 && mv -f conftest.er1 conftest.err || :'
if line.strip() == 'rm -f conftest conftest$ac_cv_exeext':
lines[i] = 'rm -rf conftest conftest$ac_cv_exeext'
path.write_text("\\n".join(lines) + "\\n")
PYEOF
cookbook_configure
"""
# libcharset's configure currently leaves @HAVE_VISIBILITY@ unsubstituted in
# generated headers on our Redox cross build. Normalize the generated headers
# so the compile path matches the already-published libiconv artifact.
for header in \
include/libcharset.h \
include/localcharset.h \
libcharset/include/libcharset.h \
libcharset/include/localcharset.h
do
if [ -f "${header}" ]; then
sed -i 's/@HAVE_VISIBILITY@/0/g' "${header}"
fi
done
# Force the nested libcharset configure step now, then patch the generated
# headers in the build tree before the top-level make descends into libcharset.
if [ -d "libcharset" ]; then
(
cd libcharset
"${COOKBOOK_SOURCE}/libcharset/configure" \
--disable-option-checking \
--prefix=/usr \
--host="${GNU_TARGET}" \
--enable-shared \
--enable-static \
ac_cv_have_decl_program_invocation_name=no \
CC="${GNU_TARGET}-gcc" \
LDFLAGS="${LDFLAGS}" \
CPPFLAGS="${CPPFLAGS}" \
--cache-file=/dev/null \
--srcdir="${COOKBOOK_SOURCE}/libcharset"
)
for header in \
libcharset/include/libcharset.h \
libcharset/include/localcharset.h
do
if [ -f "${header}" ]; then
sed -i 's/@HAVE_VISIBILITY@/0/g' "${header}"
fi
done
fi
"""
+1
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@@ -0,0 +1 @@
../../local/recipes/system/cpufreqd
+1
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@@ -0,0 +1 @@
../../local/recipes/system/driver-manager
+1
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@@ -0,0 +1 @@
../../local/recipes/system/hwrngd
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@@ -0,0 +1 @@
../../local/recipes/system/numad
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@@ -0,0 +1 @@
../../local/recipes/system/thermald