Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Quentin Perret 549020c814 ANDROID: sched: Disable find_best_target() by default ... Now that the mainline EAS wake-up path has been extended to cope with prefer-idle tasks, the need for a dedicated Android-specific wake-up routine (find_best_target()) becomes less clear. Indeed, main reasons for introducting find_best_target() in the first place were: 1. the energy_diff function was very slow, so we couldn't afford to use it on all CPUs for each wake-up for latency reasons; 2. schedtune provides additional information about tasks (the prefer-idle flag in particular) which needed to be taken into account in the placement algorithm. Now that the energy diff calculation is much faster (with the simplified energy model) and that the EAS path is aware of prefer-idle tasks, there is no clear reason to use find_best_target() any more. So, let's disable it for now to minimize the amount of out-of-tree code used in the scheduler. If using the mainline path doesn't cause regressions, it is a good sign find_best_target() can be removed safely, eventually. Otherwise, reverting back to the old behaviour is trivial since this patch only changes the sched_feat default, but doesn't remove the fbt() code path. Bug: 120440300 Change-Id: Idb5d68a3c4af7d2212e0922ab6d9a089170b5e1c Signed-off-by: Quentin Perret <quentin.perret@arm.com>		2019-03-27 15:58:02 +00:00
..
bpf	bpf, lpm: fix lookup bug in map_delete_elem	2019-03-23 20:09:51 +01:00
cgroup	This is the 4.19.31 stable release	2019-03-23 21:13:30 +01:00
configs	kconfig: tinyconfig: remove stale stack protector fixups	2018-06-15 07:15:28 +09:00
debug	BACKPORT: sched: loadavg: consolidate LOAD_INT, LOAD_FRAC, CALC_LOAD	2019-03-21 16:25:26 -07:00
dma	dma-direct: do not include SME mask in the DMA supported check	2019-01-13 09:51:05 +01:00
events	This is the 4.19.29 stable release	2019-03-13 14:17:29 -07:00
gcov	gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT	2018-06-08 18:56:02 +09:00
irq	genirq: Make sure the initial affinity is not empty	2019-03-05 17:58:47 +01:00
livepatch	Merge branch 'for-4.19/upstream' into for-linus	2018-08-20 18:33:50 +02:00
locking	locking/rwsem: Fix (possible) missed wakeup	2019-03-05 17:58:49 +01:00
power	FROMGIT: PM / EM: Expose the Energy Model in debugfs	2019-01-28 17:05:00 +00:00
printk	printk: Fix panic caused by passing log_buf_len to command line	2018-11-13 11:08:48 -08:00
rcu	rcu: Do RCU GP kthread self-wakeup from softirq and interrupt	2019-03-23 20:10:12 +01:00
sched	ANDROID: sched: Disable find_best_target() by default	2019-03-27 15:58:02 +00:00
time	timekeeping: Use proper seqcount initializer	2019-02-12 19:47:05 +01:00
trace	tracing/perf: Use strndup_user() instead of buggy open-coded version	2019-03-23 20:09:56 +01:00
.gitignore
acct.c
async.c	kernel/async.c: revert "async: simplify lowest_in_progress()"	2018-02-06 18:32:44 -08:00
audit.c	audit: use ktime_get_coarse_real_ts64() for timestamps	2018-07-17 14:45:08 -04:00
audit.h	audit: track the owner of the command mutex ourselves	2018-02-23 11:22:22 -05:00
audit_fsnotify.c	fsnotify: add fsnotify_add_inode_mark() wrappers	2018-05-18 14:58:22 +02:00
audit_tree.c	\n	2018-08-17 09:41:28 -07:00
audit_watch.c	audit: fix use-after-free in audit_add_watch	2018-07-18 11:43:36 -04:00
auditfilter.c	audit: rename FILTER_TYPE to FILTER_EXCLUDE	2018-06-19 10:39:54 -04:00
auditsc.c	audit/stable-4.18 PR 20180814	2018-08-15 10:46:54 -07:00
backtracetest.c
bounds.c	kbuild: fix kernel/bounds.c 'W=1' warning	2018-11-13 11:08:47 -08:00
capability.c
compat.c	time: Enable get/put_compat_itimerspec64 always	2018-06-24 14:39:47 +02:00
configs.c
context_tracking.c
cpu.c	This is the 4.19.21 stable release	2019-02-12 20:37:21 +01:00
cpu_pm.c
crash_core.c	kernel/crash_core.c: print timestamp using time64_t	2018-08-22 10:52:47 -07:00
crash_dump.c
cred.c
delayacct.c	UPSTREAM: delayacct: track delays from thrashing cache pages	2019-03-21 16:25:26 -07:00
dma.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
elfcore.c
exec_domain.c	proc: introduce proc_create_single{,_data}	2018-05-16 07:23:35 +02:00
exit.c	sched/wait: Fix rcuwait_wake_up() ordering	2019-03-05 17:58:49 +01:00
extable.c	extable: Make init_kernel_text() global	2018-02-21 16:54:06 +01:00
fail_function.c	bpf/error-inject/kprobes: Clear current_kprobe and enable preempt in kprobe	2018-06-21 12:33:19 +02:00
fork.c	UPSTREAM: psi: pressure stall information for CPU, memory, and IO	2019-03-21 16:25:27 -07:00
freezer.c	PM / reboot: Eliminate race between reboot and suspend	2018-08-06 12:35:20 +02:00
futex.c	futex: Fix (possible) missed wakeup	2019-03-05 17:58:49 +01:00
futex_compat.c
groups.c
hung_task.c	kernel/hung_task.c: force console verbose before panic	2019-02-12 19:47:19 +01:00
iomem.c	memremap: split devm_memremap_pages() and memremap() infrastructure	2018-05-15 23:08:33 -07:00
irq_work.c
jump_label.c	jump_label: Fix typo in warning message	2018-09-10 10:15:48 +02:00
kallsyms.c	kallsyms, x86: Export addresses of PTI entry trampolines	2018-08-14 19:12:29 -03:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt	kconfig: include kernel/Kconfig.preempt from init/Kconfig	2018-08-02 08:06:54 +09:00
kcov.c	kernel/kcov.c: mark write_comp_data() as notrace	2019-02-12 19:47:20 +01:00
kexec.c	kexec: add call to LSM hook in original kexec_load syscall	2018-07-16 12:31:57 -07:00
kexec_core.c	kexec: yield to scheduler when loading kimage segments	2018-06-15 07:55:24 +09:00
kexec_file.c	treewide: Use array_size() in vzalloc()	2018-06-12 16:19:22 -07:00
kexec_internal.h
kmod.c
kprobes.c	kprobes: Return error if we fail to reuse kprobe instead of BUG_ON()	2018-11-13 11:08:28 -08:00
ksysfs.c
kthread.c	FROMLIST: refactor header includes to allow kthread.h inclusion in psi_types.h	2019-03-22 23:07:04 +00:00
latencytop.c
Makefile	kbuild: move bin2c back to scripts/ from scripts/basic/	2018-07-18 01:18:05 +09:00
memremap.c	mm, devm_memremap_pages: add MEMORY_DEVICE_PRIVATE support	2019-01-13 09:51:04 +01:00
module-internal.h	modsign: log module name in the event of an error	2018-07-02 11:36:17 +02:00
module.c	kobject: return error code if writing /sys/.../uevent fails	2019-02-12 19:47:06 +01:00
module_signing.c	modsign: log module name in the event of an error	2018-07-02 11:36:17 +02:00
notifier.c
nsproxy.c
padata.c
panic.c	panic: avoid deadlocks in re-entrant console drivers	2018-12-29 13:37:57 +01:00
params.c	kernel/params.c: downgrade warning for unsafe parameters	2018-04-11 10:28:37 -07:00
pid.c	Fix failure path in alloc_pid()	2019-01-13 09:51:06 +01:00
pid_namespace.c	Merge branch 'userns-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2018-04-03 19:15:32 -07:00
profile.c
ptrace.c	ptrace: Remove unused ptrace_may_access_sched() and MODE_IBRS	2018-12-05 19:32:03 +01:00
range.c
reboot.c	PM / reboot: Eliminate race between reboot and suspend	2018-08-06 12:35:20 +02:00
relay.c	relay: check return of create_buf_file() properly	2019-03-13 14:02:35 -07:00
resource.c	libnvdimm for 4.18	2018-06-08 17:21:52 -07:00
rseq.c	rseq: uapi: Declare rseq_cs field as union, update includes	2018-07-10 22:18:52 +02:00
seccomp.c	audit/stable-4.18 PR 20180605	2018-06-06 16:34:00 -07:00
signal.c	signal: Restore the stop PTRACE_EVENT_EXIT	2019-02-20 10:25:48 +01:00
smp.c	cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM	2019-02-12 19:47:25 +01:00
smpboot.c	smpboot: Remove cpumask from the API	2018-07-03 09:20:44 +02:00
smpboot.h
softirq.c	nohz: Fix missing tick reprogram when interrupting an inline softirq	2018-08-03 15:52:10 +02:00
stacktrace.c
stop_machine.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-08-13 11:25:07 -07:00
sys.c	ANDROID: mm: add a field to store names for private anonymous memory	2018-12-05 09:48:11 -08:00
sys_ni.c	Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-06-10 10:17:09 -07:00
sysctl.c	This is the 4.19.31 stable release	2019-03-23 21:13:30 +01:00
sysctl_binary.c	staging: irda: remove remaining remants of irda code removal	2018-04-16 11:26:49 +02:00
task_work.c
taskstats.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
test_kprobes.c	kprobes: Remove jprobe API implementation	2018-06-21 12:33:05 +02:00
torture.c	torture: Keep old-school dmesg format	2018-06-25 11:30:10 -07:00
tracepoint.c	tracepoint: Fix tracepoint array element size mismatch	2018-10-17 15:35:29 -04:00
tsacct.c
ucount.c	headers: untangle kmemleak.h from mm.h	2018-04-05 21:36:27 -07:00
uid16.c	fs: add do_fchownat(), ksys_fchown() helpers and ksys_{,l}chown() wrappers	2018-04-02 20:15:59 +02:00
uid16.h	kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c	2018-04-02 20:15:30 +02:00
umh.c	umh: fix race condition	2018-06-07 16:56:28 -04:00
up.c
user-return-notifier.c
user.c	ANDROID: proc: Add /proc/uid directory	2019-03-06 15:59:21 +00:00
user_namespace.c	userns: also map extents in the reverse map to kernel IDs	2018-11-13 11:09:00 -08:00
utsname.c	uts: create "struct uts_namespace" from kmem_cache	2018-04-11 10:28:35 -07:00
utsname_sysctl.c	sys: don't hold uts_sem while accessing userspace memory	2018-08-11 02:05:53 -05:00
watchdog.c	watchdog: Mark watchdog touch functions as notrace	2018-08-30 12:56:40 +02:00
watchdog_hld.c	watchdog: Mark watchdog touch functions as notrace	2018-08-30 12:56:40 +02:00
workqueue.c	UPSTREAM: psi: fix aggregation idle shut-off	2019-03-21 16:25:27 -07:00
workqueue_internal.h	UPSTREAM: psi: fix aggregation idle shut-off	2019-03-21 16:25:27 -07:00