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Quentin Perret 8e9d3d0740 ANDROID: sched/fair: Cap transient util in stune 
boosted_cpu_util() sums the CFS and RT util signals before they are used
for frequency selection. While the util_avg signals are in sync,
util_est prevents cpu_util_cfs() from decreasing when a CFS task is
preempted by RT.

This util_est behaviour is beneficial in many scenarios, but it can
cause the sum of rt_util and cfs_util to go above SCHED_CAPACITY_SCALE.
Although benign, this transient value appears in the stune tracepoints,
and can cause confusion.

Work around the problem by capping the util sum to SCHED_CAPACITY_SCALE.

Bug: 120440300
Change-Id: I2be6eb157af86024e52ae11715f5637c77b201a3
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
2019-08-16 14:46:14 +01:00
..
bpf bpf: silence warning messages in core 2019-07-26 09:14:06 +02:00
cgroup This is the 4.19.66 stable release 2019-08-11 15:21:36 +02:00
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 4.19.67 stable release 2019-08-16 11:27:10 +02:00
gcov UPSTREAM: gcov: clang support 2019-05-17 16:05:09 -07:00
irq genirq: Add optional hardware synchronization for shutdown 2019-07-21 09:03:13 +02:00
livepatch module: Fix livepatch/ftrace module text permissions race 2019-07-10 09:53:40 +02:00
locking locking/lockdep: Hide unused 'class' variable 2019-07-31 07:27:09 +02:00
power This is the 4.19.50 stable release 2019-06-11 12:38:58 +02:00
printk printk: Fix panic caused by passing log_buf_len to command line 2018-11-13 11:08:48 -08:00
rcu rcuperf: Fix cleanup path for invalid perf_type strings 2019-05-31 06:46:30 -07:00
sched ANDROID: sched/fair: Cap transient util in stune 2019-08-16 14:46:14 +01:00
time timer_list: Guard procfs specific code 2019-07-26 09:14:10 +02:00
trace This is the 4.19.65 stable release 2019-08-06 20:08:18 +02:00
.gitignore BACKPORT: Provide in-kernel headers to make extending kernel easier 2019-06-12 12:33:20 +00:00
acct.c acct_on(): don't mess with freeze protection 2019-05-31 06:46:05 -07:00
async.c
audit.c audit: use ktime_get_coarse_real_ts64() for timestamps 2018-07-17 14:45:08 -04:00
audit.h
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: fix a memory leak bug 2019-05-31 06:46:17 -07:00
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
cfi.c ANDROID: add support for clang Control Flow Integrity (CFI) 2019-05-20 17:46:32 -07:00
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 4.19.60 stable release 2019-07-22 14:36:16 +02:00
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 access: avoid the RCU grace period for the temporary subjective credentials 2019-07-31 07:27:11 +02:00
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 UPSTREAM: pidfd: fix a poll race when setting exit_state 2019-08-12 13:36:37 -04:00
extable.c
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: pidfd: add polling support 2019-08-12 13:36:37 -04:00
freezer.c PM / reboot: Eliminate race between reboot and suspend 2018-08-06 12:35:20 +02:00
futex.c locking/futex: Allow low-level atomic operations to return -EAGAIN 2019-05-10 17:54:11 +02:00
futex_compat.c
gen_kheaders.sh BACKPORT: kheaders: Do not regenerate archive if config is not changed 2019-06-12 12:35:31 +00:00
groups.c
hung_task.c kernel: hung_task.c: disable on suspend 2019-04-20 09:16:02 +02:00
iomem.c memremap: split devm_memremap_pages() and memremap() infrastructure 2018-05-15 23:08:33 -07:00
irq_work.c irq_work: Do not raise an IPI when queueing work on the local CPU 2019-05-31 06:46:19 -07:00
jump_label.c jump_label: move 'asm goto' support test to Kconfig 2019-06-04 08:02:34 +02:00
kallsyms.c ANDROID: kallsyms: strip the .cfi postfix from symbols with CONFIG_CFI_CLANG 2019-05-20 17:46:32 -07:00
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
kheaders.c BACKPORT: kheaders: Move from proc to sysfs 2019-06-12 12:33:54 +00:00
kmod.c
kprobes.c kprobes: Fix error check when reusing optimized probes 2019-04-27 09:36:37 +02:00
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 ANDROID: kernel/Makefile: do not disable LTO for sys_ni.c with CFI 2019-07-25 09:36:26 -07:00
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 This is the 4.19.65 stable release 2019-08-06 20:08:18 +02:00
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 padata: use smp_mb in padata_reorder to avoid orphaned padata jobs 2019-07-26 09:14:25 +02:00
panic.c panic: avoid deadlocks in re-entrant console drivers 2018-12-29 13:37:57 +01:00
params.c
pid.c UPSTREAM: pid: add pidfd_open() 2019-08-12 13:36:37 -04:00
pid_namespace.c signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig 2019-07-26 09:14:01 +02:00
profile.c
ptrace.c ptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME 2019-07-10 09:53:41 +02:00
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 UPSTREAM: pidfd: add polling support 2019-08-12 13:36:37 -04:00
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 This is the 4.19.51 stable release 2019-06-15 16:12:59 +02:00
sys_ni.c UPSTREAM: signal: support CLONE_PIDFD with pidfd_send_signal 2019-08-12 13:36:37 -04:00
sysctl.c This is the 4.19.51 stable release 2019-06-15 16:12:59 +02:00
sysctl_binary.c
task_work.c
taskstats.c
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
uid16.c
uid16.h
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
utsname_sysctl.c sys: don't hold uts_sem while accessing userspace memory 2018-08-11 02:05:53 -05:00
watchdog.c watchdog: Respect watchdog cpumask on CPU hotplug 2019-04-03 06:26:29 +02:00
watchdog_hld.c watchdog: Mark watchdog touch functions as notrace 2018-08-30 12:56:40 +02:00
workqueue.c This is the 4.19.38 stable release 2019-05-02 10:13:34 +02:00
workqueue_internal.h UPSTREAM: psi: fix aggregation idle shut-off 2019-03-21 16:25:27 -07:00