user/sven/linux.git/tools/power, branch v3.4.44

kbuild: Fix gcc -x syntax

2012-10-12T20:38:37Z

commit b1e0d8b70fa31821ebca3965f2ef8619d7c5e316 upstream. The correct syntax for gcc -x is "gcc -x assembler", not "gcc -xassembler". Even though the latter happens to work, the former is what is documented in the manual page and thus what gcc wrappers such as icecream do expect. This isn't a cosmetic change. The missing space prevents icecream from recognizing compilation tasks it can't handle, leading to silent kernel miscompilations. Besides me, credits go to Michael Matz and Dirk Mueller for investigating the miscompilation issue and tracking it down to this incorrect -x parameter syntax. Signed-off-by: Jean Delvare Acked-by: Ingo Molnar Cc: Bernhard Walle Cc: Michal Marek Cc: Ralf Baechle Signed-off-by: Michal Marek Signed-off-by: Greg Kroah-Hartman

Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux

2012-03-30T23:45:39Z

Pull ACPI & Power Management changes from Len Brown: - ACPI 5.0 after-ripples, ACPICA/Linux divergence cleanup - cpuidle evolving, more ARM use - thermal sub-system evolving, ditto - assorted other PM bits Fix up conflicts in various cpuidle implementations due to ARM cpuidle cleanups (ARM at91 self-refresh and cpu idle code rewritten into "standby" in asm conflicting with the consolidation of cpuidle time keeping), trivial SH include file context conflict and RCU tracing fixes in generic code. * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (77 commits) ACPI throttling: fix endian bug in acpi_read_throttling_status() Disable MCP limit exceeded messages from Intel IPS driver ACPI video: Don't start video device until its associated input device has been allocated ACPI video: Harden video bus adding. ACPI: Add support for exposing BGRT data ACPI: export acpi_kobj ACPI: Fix logic for removing mappings in 'acpi_unmap' CPER failed to handle generic error records with multiple sections ACPI: Clean redundant codes in scan.c ACPI: Fix unprotected smp_processor_id() in acpi_processor_cst_has_changed() ACPI: consistently use should_use_kmap() PNPACPI: Fix device ref leaking in acpi_pnp_match ACPI: Fix use-after-free in acpi_map_lsapic ACPI: processor_driver: add missing kfree ACPI, APEI: Fix incorrect APEI register bit width check and usage Update documentation for parameter *notrigger* in einj.txt ACPI, APEI, EINJ, new parameter to control trigger action ACPI, APEI, EINJ, limit the range of einj_param ACPI, APEI, Fix ERST header length check cpuidle: power_usage should be declared signed integer ...

tools turbostat: harden against cpu online/offline

2012-03-30T02:27:19Z

Sometimes users have turbostat running in interval mode when they take processors offline/online. Previously, turbostat would survive, but not gracefully. Tighten up the error checking so turbostat notices changesn sooner, and print just 1 line on change: turbostat: re-initialized with num_cpus %d Signed-off-by: Len Brown

tools turbostat: reduce measurement overhead due to IPIs

2012-03-30T02:04:58Z

turbostat uses /dev/cpu/*/msr interface to read MSRs. For modern systems, it reads 10 MSR/CPU. This can be observed as 10 "Function Call Interrupts" per CPU per sample added to /proc/interrupts. This overhead is measurable on large idle systems, and as Yoquan Song pointed out, it can even trick cpuidle into thinking the system is busy. Here turbostat re-schedules itself in-turn to each CPU so that its MSR reads will always be local. This replaces the 10 "Function Call Interrupts" with a single "Rescheduling interrupt" per sample per CPU. On an idle 32-CPU system, this shifts some residency from the shallow c1 state to the deeper c7 state: # ./turbostat.old -s %c0 GHz TSC %c1 %c3 %c6 %c7 %pc2 %pc3 %pc6 %pc7 0.27 1.29 2.29 0.95 0.02 0.00 98.77 20.23 0.00 77.41 0.00 0.25 1.24 2.29 0.98 0.02 0.00 98.75 20.34 0.03 77.74 0.00 0.27 1.22 2.29 0.54 0.00 0.00 99.18 20.64 0.00 77.70 0.00 0.26 1.22 2.29 1.22 0.00 0.00 98.52 20.22 0.00 77.74 0.00 0.26 1.38 2.29 0.78 0.02 0.00 98.95 20.51 0.05 77.56 0.00 ^C i# ./turbostat.new -s %c0 GHz TSC %c1 %c3 %c6 %c7 %pc2 %pc3 %pc6 %pc7 0.27 1.20 2.29 0.24 0.01 0.00 99.49 20.58 0.00 78.20 0.00 0.27 1.22 2.29 0.25 0.00 0.00 99.48 20.79 0.00 77.85 0.00 0.27 1.20 2.29 0.25 0.02 0.00 99.46 20.71 0.03 77.89 0.00 0.28 1.26 2.29 0.25 0.01 0.00 99.46 20.89 0.02 77.67 0.00 0.27 1.20 2.29 0.24 0.01 0.00 99.48 20.65 0.00 78.04 0.00 cc: Youquan Song Signed-off-by: Len Brown

tools turbostat: add summary option

2012-03-29T17:22:06Z

turbostat -s cuts down on the amount of output, per user request. also treak some output whitespace and the man page. Signed-off-by: Len Brown

cpupower tools: add install target to the debug tools' makefiles

2012-03-03T13:40:11Z

Signed-off-by: Franck Bui-Huu Signed-off-by: Dominik Brodowski

cpupower tools: allow to build debug tools in a separate directory too

2012-03-03T13:40:11Z

Signed-off-by: Franck Bui-Huu Signed-off-by: Dominik Brodowski

cpupower: Fix broken mask values

2012-03-03T13:40:11Z

Signed-off-by: Thomas Renninger Tested-by: Dave Jones Signed-off-by: Dominik Brodowski

cpupower tool: allow to build in a separate directory

2012-03-03T13:40:10Z

This patch allows cpupower tool to generate its output files in a seperate directory. This is now possible by passing the 'O=' to the command line. This can be usefull for a normal user if the kernel source code is located in a read only location. This is patch stole some bits of the perf makefile. [linux@dominikbrodowski.net: fix commit message] Signed-off-by: Franck Bui-Huu Signed-off-by: Dominik Brodowski

cpupower tool: makefile: simplify the recipe used to generate cpupower.pot target

2012-03-03T13:40:10Z

Use the '-p' and '-o' switches to specify the pathname of the output file to xgettext(1). This avoids to move manually the output file if xgettext(1) succeeds. Signed-off-by: Franck Bui-Huu Signed-off-by: Dominik Brodowski