Hi Tixy,
These patches are mine and Olivier's, can you tell me what your config is to see even a 90s boot? I haven't noticed any boot-time extension on my system, but I'm booting from the A15 cluster. I'd like to reproduce your system here.
The build error is my mistake, I need to know which CPU a task is on and it looks like I have missed a dependency when I've changed the calling code. I will sort out a patch for that asap.
Best Regards, Chris
-----Original Message----- From: Jon Medhurst (Tixy) [mailto:tixy@linaro.org] Sent: 19 November 2012 15:41 To: Viresh Kumar Cc: Andrey Konovalov; PDSW-power-team; Lists linaro-dev Subject: Re: [GIT PULL]; big LITTLE MP master v12
On Sun, 2012-11-18 at 10:40 +0530, Viresh Kumar wrote:
Hi Andrey,
Please pull big-LITTLE-MP-master-v12 with following updates:
- Based on v3.7-rc5 - Stats: - Total Patches: 62 - New Patches: 1 - genirq: Add default affinity mask command line option inmisc-patches branch - top 3 patches in: sched-pack-small-tasks-v1 - top 2 patches in: task-placement-v2 - additional patch in: config-fragments - Dropped patches/branches (as they are managed in experimental merge branch): 20 - patches in per-entity-load-tracking-with-core-sched-v1: 15 - Updated Patches: 0
This version increases Android boot time by a factor of 3, from 91 seconds to 257 seconds, this is comparing it with the version of the master-v12 branch created on Nov 15th. Looking at the differences in the code, one obvious thing which stands out is big-LITTLE-MP.conf now has:
CONFIG_HMP_VARIABLE_SCALE=y CONFIG_HMP_FREQUENCY_INVARIANT_SCALE=y
If I remove this then boot time goes back to 90 seconds.
Also, if I build without big-LITTLE-MP.conf the I get a build error:
kernel/sched/fair.c: In function 'update_entity_load_avg': kernel/sched/fair.c:1469:26: error: 'struct sched_entity' has no member named 'cfs_rq'
-- Tixy
---------------------x--------------------------x--------------------
The following changes since commit
77b67063bb6bce6d475e910d3b886a606d0d91f7:
Linux 3.7-rc5 (2012-11-11 13:44:33 +0100)
are available in the git repository at:
git://git.linaro.org/arm/big.LITTLE/mp.git big-LITTLE-MP-master-v12
for you to fetch changes up to
f942092bd1008de7379b4a52d38dc03de5949fc8:
Merge branches 'arm-multi_pmu_v2', 'hw-bkp-v7.1-debug-v1', 'task-placement-v2', 'misc-patches', 'config-fragments' and 'sched-pack-small-tasks-v1' into big-LITTLE-MP-master-v12-v2 (2012-11-17 09:29:41 +0530)
Ben Segall (1): sched: Maintain per-rq runnable averages
Chris Redpath (1): ARM: Experimental Frequency-Invariant Load Scaling Patch
Dietmar Eggemann (1): ARM: hw_breakpoint: v7.1 self-hosted debug powerdown support
Jon Medhurst (1): ARM: sched: Avoid empty 'slow' HMP domain
Liviu Dudau (2): Revert "sched: secure access to other CPU statistics" linaro/configs: big-LITTLE-MP: Enable the new tunable sysfs interface by default.
Lorenzo Pieralisi (1): ARM: kernel: provide cluster to logical cpu mask mapping API
Marc Zyngier (1): ARM: perf: add guest vs host discrimination
Mark Rutland (1): ARM: perf: register cpu_notifier at driver init
Morten Rasmussen (15): sched: entity load-tracking load_avg_ratio sched: Task placement for heterogeneous systems based on task load-tracking sched: Forced task migration on heterogeneous systems sched: Introduce priority-based task migration filter ARM: Add HMP scheduling support for ARM architecture ARM: sched: Use device-tree to provide fast/slow CPU list for
HMP
ARM: sched: Setup SCHED_HMP domains sched: Add ftrace events for entity load-tracking sched: Add HMP task migration ftrace event sched: SCHED_HMP multi-domain task migration control sched: Enable HMP priority filter by default sched: Only down migrate low priority tasks if allowed byaffinity mask
linaro/configs: Enable HMP priority filter by default sched: SD_SHARE_POWERLINE buddy selection fix ARM: TC2: Re-enable SD_SHARE_POWERLINEOlivier Cozette (1): ARM: Change load tracking scale using sysfs
Paul Turner (15): sched: Track the runnable average on a per-task entity basis sched: Aggregate load contributed by task entities on parenting
cfs_rq
sched: Maintain the load contribution of blocked entities sched: Add an rq migration call-back to sched_class sched: Account for blocked load waking back up sched: Aggregate total task_group load sched: Compute load contribution by a group entity sched: Normalize tg load contributions against runnable time sched: Maintain runnable averages across throttled periods sched: Replace update_shares weight distribution with per-entity
computation sched: Refactor update_shares_cpu() -> update_blocked_avgs() sched: Update_cfs_shares at period edge sched: Make __update_entity_runnable_avg() fast sched: Introduce temporary FAIR_GROUP_SCHED dependency for
load-tracking
sched: implement usage trackingPeter Zijlstra (1): sched: Describe CFS load-balancer
Sudeep KarkadaNagesha (9): ARM: perf: allocate CPU PMU dynamically at probe time ARM: perf: consistently use struct perf_event in arm_pmu
functions
ARM: perf: check ARMv7 counter validity on a per-pmu basis ARM: perf: replace global CPU PMU pointer with per-cpu pointers ARM: perf: register CPU PMUs with idr types ARM: perf: set cpu affinity to support multiple PMUs ARM: perf: set cpu affinity for the irqs correctly ARM: perf: remove spaces in CPU PMU names ARM: perf: save/restore pmu registers in pm notifierThomas Gleixner (1): genirq: Add default affinity mask command line option
Vincent Guittot (5): sched: add a new SD SHARE_POWERLINE flag for sched_domain sched: pack small tasks sched: secure access to other CPU statistics sched: pack the idle load balance ARM: sched: clear SD_SHARE_POWERLINE
Viresh Kumar (5): Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" configs: Add config fragments for big LITTLE MP linaro/configs: Update big LITTLE MP fragment for task
placement work
config-frag/big-LITTLE: Use device-tree to provide fast/slowCPU
list for HMP Merge branches 'arm-multi_pmu_v2', 'hw-bkp-v7.1-debug-v1', 'task-placement-v2', 'misc-patches', 'config-fragments' and 'sched-pack-small-tasks-v1' into big-LITTLE-MP-master-v12-v2
Will Deacon (2): ARM: perf: return NOTIFY_DONE from cpu notifier when no
available PMU
ARM: perf: consistently use arm_pmu->name for PMU nameDocumentation/devicetree/bindings/arm/pmu.txt | 3 + Documentation/kernel-parameters.txt | 9 + arch/arm/Kconfig | 85 ++ arch/arm/include/asm/perf_event.h | 5 + arch/arm/include/asm/pmu.h | 40 +- arch/arm/include/asm/topology.h | 34 + arch/arm/kernel/hw_breakpoint.c | 57 + arch/arm/kernel/perf_event.c | 103 +- arch/arm/kernel/perf_event_cpu.c | 169 ++- arch/arm/kernel/perf_event_v6.c | 130 +- arch/arm/kernel/perf_event_v7.c | 295 ++-- arch/arm/kernel/perf_event_xscale.c | 161 +- arch/arm/kernel/topology.c | 125 ++ arch/ia64/include/asm/topology.h | 1 + arch/tile/include/asm/topology.h | 1 + include/linux/sched.h | 29 + include/linux/topology.h | 3 + include/trace/events/sched.h | 153 ++ kernel/irq/irqdesc.c | 21 +- kernel/sched/core.c | 16 + kernel/sched/debug.c | 39 +- kernel/sched/fair.c | 1942
++++++++++++++++++++++---
kernel/sched/sched.h | 65 +- linaro/configs/big-LITTLE-MP.conf | 13 + 24 files changed, 2943 insertions(+), 556 deletions(-) create mode 100644 linaro/configs/big-LITTLE-MP.conf
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