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[PATCH[ Cross-compile support in Powerdebug Makefile

by Mohammad Merajul Islam Molla

Adding support for cross-compilation in powerdebug Makefile. diff --git a/Makefile b/Makefile index 2da9d67..d7c5394 100644 --- a/Makefile +++ b/Makefile @@ -2,7 +2,8 @@ BINDIR=/usr/sbin MANDIR=/usr/share/man/man8 CFLAGS?=-O1 -g -Wall -Wshadow -CC?=gcc +LD = $(CROSS_COMPILE)ld +CC = $(CROSS_COMPILE)gcc OBJS = powerdebug.o sensor.o clocks.o regulator.o gpio.o \ display.o tree.o utils.o mainloop.o -- -Meraj

11 years, 4 months

Powertop Bugs on ARM [1311381, 1316096]

by Mohammad Merajul Islam Molla

Hello, I tested powertop on Samsung Arndale Board with Ubuntu Saucy Server 14.01 with custom kernel (config file attached, powertop config options enabled), and reported a bug 1316096. Also, I found the other bug 1316096 happening on arndale board. In short, bug 1316096 - Powertop displays "nan" on top [summary] where it should show legal value. Summary: nan wakeups/second, nan GPU ops/seconds, nan VFS ops/sec and -0.0% CPU use <--- displays "nan" instead of valid value bug 1316096 - Idle stats & Frequency stats pages are empty. I did some debugging and it seems that the root cause of both the bugs may be same. It looks like the parsing code enumerate_cpus()[src/cpu/cpu.cpp] called from main.cpp, is expecting /proc/cpuinfo file in a particular format which works on Intel but not on ARM. On Intel, it gets the file in the format expected. However, on ARM on Arndale board with saucy server, the file looks as below - processor : 0 model name : ARMv7 Processor rev 4 (v7l) Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc0f CPU revision : 4 processor : 1 model name : ARMv7 Processor rev 4 (v7l) Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc0f CPU revision : 4 Hardware : SAMSUNG EXYNOS5 (Flattened Device Tree) Revision : 0000 Serial : 0000000000000000 The parsing code which gathers information about cpus, fails to parse this file and as a result the vector "all_cpus" remains empty. I played with it a bit more and added a few lines to get a work around as follows - in function enumarate_cpus(): if (strncmp(line, "processor\t",10) == 0) { char *c; c = strchr(line, ':'); if (c) { c++; number = strtoull(c, NULL, 10); * handle_one_cpu(number, "Samsung", 0, 0); [ line added]* * set_max_cpu(number); [ line added]* } } With this changes, idle stat and frequency pages were populated and summary was shown properly as noted below - *Summary: 392.6 wakeups/second, 0.0 GPU ops/seconds, 0.0 VFS ops/sec and 4.0% CPU use* I think due to this bug, the information shown on summary page was also not correct and some other info displayed by powertop may be incorrect too. Please comment. -- Thanks, -Meraj

11 years, 4 months

[PATCH] Powertop Bugs on ARM [1311381, 1316096]

by Mohammad Merajul Islam Molla

Patch for powertop bugs 1311281, 1316906. Details here - http://lists.linaro.org/pipermail/linaro-dev/2014-May/017142.html http://lists.linaro.org/pipermail/linaro-dev/2014-May/017143.html diff --git a/src/cpu/cpu.cpp b/src/cpu/cpu.cpp index 4a7e197..140d7ed 100644 --- a/src/cpu/cpu.cpp +++ b/src/cpu/cpu.cpp @@ -262,6 +262,8 @@ void enumerate_cpus(void) if (c) { c++; number = strtoull(c, NULL, 10); + handle_one_cpu(number, "ARMv7", 0, 0); + set_max_cpu(number); } } if (strncmp(line, "cpu family\t",11) == 0) { -- Thanks, -Meraj

11 years, 4 months

[PATCH]: PowerTOP README file needs to be updated

by Mohammad Merajul Islam Molla

Hello, It looks like README file in powertop branch is out of sync with how powertop should be actually built. It should be updated. diff --git a/README b/README index 2961eba..d83b315 100644 --- a/README +++ b/README @@ -2,9 +2,10 @@ ------------------------------ To build and install PowerTOP type the following commands, - ./configure - ./make - ./make install + autoreconf -sfi + ./configure + make + make install Note: For Android (running Intel Architecture ) there is a Android.mk that was provided by community members, and at this time is supported -- Thanks, -Meraj

11 years, 4 months

why is the the smp_mb() in arm64's barrier.h "dmb ish"?

by KelvinKLi＠via-alliance.com

Hi All, In arch/arm64/include/asm/barrier.h, there is the definition of smp_mb()/smp_rmb()/smp_wmb() for arm64. I noticed that all the 3 macors are using "dmb ishxx", which is only affect the cluster of the CPU executing the instruction. But in the big.LITTLE system, there will be 2 cluster. So the smp_mb()/smp_rmb()/smp_wmb() cannot affect all the CPU in the system. Is there other considerations so that smp_mb()/smp_rmb()/smp_wmb() are implemented to "only affecting inner sharable cores"? Best Regards, Kelvin K. Li --------------------------------------------------------------- Software Team, VIA Technologies, Inc. 5F, VIA Tower, 1 Zhongguancun East Road, Haidian District, Beijing, 100084 Tel: 86-10-59852288 ext.3620 mailto: kelvinkli(a)via-alliance.com

11 years, 4 months

Test Result Summary of Linaro Android 14.04 Release.

by Soumya Basak

Linaro Android 14.04 Release (Calender week 17): Here is the test result summary for 14.04 Release Linaro Android image on following boards: 1) TI Panda 4460; 2) TI Panda 4430; 3) Samsung Arndale; 4) Galaxy Nexus; 5) ARM Versatile Express A9; 6) ARM Versatile Express TC2; 7) ARM Versatile Express TC2 LSK; 1. TI Panda 4460 + Linux Linaro Android (Column: R) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… 2. TI Panda 4430 + Linux Linaro Android (Column: R) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… 3. Samsung Arndale + Linux Linaro Android (Column: P) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdDFaR… 4. Galaxy Nexus + Linux Linaro Android (Column: N) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdFhhe… 5. ARM Versatile Express A9 + Linux Linaro Android (Column: R) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… 6. ARM Versatile Express TC2 + Linux Linaro Android (Column: W) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… 7. ARM Versatile Express TC2 LSK + Linux Linaro Android (Column: X) https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… Consolidated test result spreadsheet for Linaro Android 14.04 release, please visit the link below: https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDZxQ… -- Thank You. Best Regards -Soumya Basak.

11 years, 4 months

[PATCH PMQA] cpuhotplug: add subtest to stress hotplug feature

by Sanjay Singh Rawat

Signed-off-by: Sanjay Singh Rawat <sanjay.rawat(a)linaro.org> --- - This will help in catching issue like https://lkml.org/lkml/2014/3/25/122 - Tested on my x86 dev m/c Output: running hotplug stress on cpu : cpu1 pass: cpu hotplug count = 200 duration = 16.98 seconds running hotplug stress on cpu : cpu2 pass: cpu hotplug count = 200 duration = 16.36 seconds running hotplug stress on cpu : cpu3 pass: cpu hotplug count = 200 duration = 15.05 seconds - Issue: For a hotplug count of 500 the system just hangs. Need to manually restart. Is it safe to simply plugout the cpu? What will happend to the tasks in the cpu runqueue. --- cpuhotplug/cpuhotplug_09.sh | 70 ++++++++++++++++++++++++++++++++++++++++++ cpuhotplug/cpuhotplug_09.txt | 1 + 2 files changed, 71 insertions(+) create mode 100755 cpuhotplug/cpuhotplug_09.sh create mode 100644 cpuhotplug/cpuhotplug_09.txt diff --git a/cpuhotplug/cpuhotplug_09.sh b/cpuhotplug/cpuhotplug_09.sh new file mode 100755 index 0000000..be0c91c --- /dev/null +++ b/cpuhotplug/cpuhotplug_09.sh @@ -0,0 +1,70 @@ +#!/bin/bash +# +# PM-QA validation test suite for the power management on Linux +# +# Copyright (C) 2014, Linaro Limited. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +# +# Contributors: +# Sanjay Singh Rawat <sanjay.rawat(a)linaro.org> +# - initial API and implementation +# + +# URL : https://wiki.linaro.org/WorkingGroups/PowerManagement/Resources/TestSuite/P… + +source ../include/functions.sh +STRESS_COUNT=200 + +cpuhotplug_stress() { + local cpu=$1 + local dirpath=$CPU_PATH/$1 + local state= + local start= + local end= + shift 1 + + if [ "$cpu" == "cpu0" ]; then + # skipping main cpu + return 0 + fi + + echo "running hotplug stress on cpu :" $cpu + start=$(echo $(awk '{print $1}' /proc/uptime)) + + for i in $(seq 1 $STRESS_COUNT); + do + set_offline $cpu + state=$(get_online $cpu) + if [ $state -ne 0 ]; then + echo "fail: cpu offline failed at " $i + return 1 + fi + + set_online $cpu + state=$(get_online $cpu) + if [ $state -ne 1 ]; then + echo "fail: cpu online failed at " $i + return 1 + fi + done + + end=$(echo $(awk '{print $1}' /proc/uptime)) + echo "pass: cpu hotplug in/out count =" $i "duration =" $(echo "$end-$start" | bc) "seconds" + return 0 +} + +for_each_cpu cpuhotplug_stress +test_status_show diff --git a/cpuhotplug/cpuhotplug_09.txt b/cpuhotplug/cpuhotplug_09.txt new file mode 100644 index 0000000..5b0f8ac --- /dev/null +++ b/cpuhotplug/cpuhotplug_09.txt @@ -0,0 +1 @@ +test to stress cpu hotplug feature -- 1.7.10.4

11 years, 4 months

Test Result Summary of Linux Linaro ubuntu 14.04 Release.

by Botao Sun

Linaro 14.04 Release (Calendar Week 17): Here is test result summary for Linux Linaro ubuntu Saucy image on following boards: 1) Samsung Arndale; 2) TI Panda 4430; 3) TI Panda 4460. 1. Samsung Arndale + Linux Linaro Saucy (Column AX): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdGZJS… 2. TI Panda 4430 + Linux Linaro Saucy (Column BE): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… 3. TI Panda 4460 + Linux Linaro Saucy (Column BE): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… For consolidated test result spreadsheet, please visit this link below: https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDdWZ… Thank you. Best Regards Botao Sun

11 years, 4 months

Fedora for AArch64 now available

by Al Stone

FYI: for those interested in Fedora, I thought I would pass on an announcement from Paul Whalen recently sent to the fedora-arm mailing list...you can now pick a remix image using the links highlighted below... Good afternoon folks, David Marlin has posted a new Aarch64 Fedora Rawhide Remix for those interested in upgrading from the F19 bootstrap image. The remix includes a lookaside repository[1] to provide a patched kernel and packages not yet built for aarch64. Instructions for downloading and using the remix have been added to the Quickstart[2] page. Paul [1] - http://dmarlin.fedorapeople.org/yum/f21/ [2] - https://fedoraproject.org/wiki/Architectures/ARM/AArch64/QuickStart -- ciao, al ----------------------------------- Al Stone Software Engineer Linaro Enterprise Group al.stone(a)linaro.org -----------------------------------

11 years, 4 months

[PATCH] Output format of powerdebug is messed up on Samsung Arndale Board

by Mohammad Merajul Islam Molla

Hello, This is for launchpad bug 1307896 ( https://bugs.launchpad.net/linaro-powerdebug/+bug/1307896). While displaying information about "Regulators" output becomes really messy (zig zag) on Samsung Arndale Board (Exynos 5250, Cortex A-15). It looks like the output field size "11" for printing regulator name is not enough. Some regulators have longer names. Hence proposing to increase this field size to a higher value, i.e. 25. Patch goes here - ---------------------------- diff --git a/regulator.c b/regulator.c index 9cd89fd..045cceb 100644 --- a/regulator.c +++ b/regulator.c @@ -127,7 +127,7 @@ static int regulator_display_cb(struct tree *t, void *data) if (!strlen(reg->name)) return 0; - if (asprintf(&buf, "%-11s %-11s %-11s %-11s %-11d %-11d %-11d %-12d", + if (asprintf(&buf, "%-25s %-11s %-11s %-11s %-11d %-11d %-11d %-12d", reg->name, reg->status, reg->state, reg->type, reg->num_users, reg->microvolts, reg->min_microvolts, reg->max_microvolts) < 0) @@ -147,7 +147,7 @@ static int regulator_print_header(void) char *buf; int ret; - if (asprintf(&buf, "%-11s %-11s %-11s %-11s %-11s %-11s %-11s %-12s", + if (asprintf(&buf, "%-25s %-11s %-11s %-11s %-11s %-11s %-11s %-12s", "Name", "Status", "State", "Type", "Users", "Microvolts", "Min u-volts", "Max u-volts") < 0) return -1; -- Thanks, -Meraj

11 years, 4 months

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