user/sven/linux.git/tools/power, branch v3.2.79

turbostat: Use GCC's CPUID functions to support PIC

2014-04-01T23:58:44Z

commit 2b92865e648ce04a39fda4f903784a5d01ecb0dc upstream. turbostat uses inline assembly to call cpuid. On 32-bit x86, on systems that have certain security features enabled by default that make -fPIC the default, this causes a build error: turbostat.c: In function ‘check_cpuid’: turbostat.c:1906:2: error: PIC register clobbered by ‘ebx’ in ‘asm’ asm("cpuid" : "=a" (fms), "=c" (ecx), "=d" (edx) : "a" (1) : "ebx"); ^ GCC provides a header cpuid.h, containing a __get_cpuid function that works with both PIC and non-PIC. (On PIC, it saves and restores ebx around the cpuid instruction.) Use that instead. Signed-off-by: Josh Triplett Signed-off-by: Len Brown Signed-off-by: Ben Hutchings

cpupower: Fix segfault due to incorrect getopt_long arugments

2014-02-15T19:20:14Z

commit f447ef4a56dee4b68a91460bcdfe06b5011085f2 upstream. If a user calls 'cpupower set --perf-bias 15', the process will end with a SIGSEGV in libc because cpupower-set passes a NULL optarg to the atoi call. This is because the getopt_long structure currently has all of the options as having an optional_argument when they really have a required argument. We change the structure to use required_argument to match the short options and it resolves the issue. This fixes https://bugzilla.redhat.com/show_bug.cgi?id=1000439 Signed-off-by: Josh Boyer Cc: Dominik Brodowski Cc: Thomas Renninger Signed-off-by: Linus Torvalds Signed-off-by: Ben Hutchings

kbuild: Fix gcc -x syntax

2012-10-17T02:49:27Z

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 [bwh: Backported to 3.2: drop unneeded change to arch/x86/Makefile] Signed-off-by: Ben Hutchings

Merge branches 'acpi', 'idle', 'mrst-pmu' and 'pm-tools' into next

2011-11-07T03:14:50Z

cpupower: use man(1) when calling "cpupower help subcommand"

2011-08-19T15:13:56Z

Instead of printing something non-formatted to stdout, call man(1) to show the man page for the proper subcommand. Signed-off-by: Dominik Brodowski

cpupower: make NLS truly optional

2011-08-19T15:00:02Z

Loosely based on a patch for cpufrequtils, submittted by Sergey Dryabzhinsky and signed-off-by: Matt Turner Signed-off-by: Dominik Brodowski

cpupower: fix Makefile typo

2011-08-19T14:49:49Z

Signed-off-by: Dave Jones Signed-off-by: Dominik Brodowski

cpupower: Make monitor command -c/--cpu aware

2011-08-15T18:03:16Z

This allows for example: cpupower -c 2-4,6 monitor -m Mperf |Mperf PKG |CORE|CPU | C0 | Cx | Freq 0| 8| 4| 2.42| 97.58| 1353 0| 16| 2| 14.38| 85.62| 1928 0| 24| 6| 1.76| 98.24| 1442 1| 16| 3| 15.53| 84.47| 1650 CPUs always get resorted for package, core then cpu id if it could get read out (or however you name these topology levels...). Still this is a nice way to keep the overview if a test binary is bound to a specific CPU or if one wants to show all CPUs inside a package or similar. Still missing: Do not measure not available cores to reduce the overhead and achieve better results. Signed-off-by: Thomas Renninger Signed-off-by: Dominik Brodowski

cpupower: Better detect offlined CPUs

2011-08-15T18:03:10Z

Before, checking for offlined CPUs was done dirty and it was checked whether topology parsing returned -1 values. But this is a valid case on a Xen (and possibly other) kernels. Do proper online/offline checking, also take CONFIG_HOTPLUG_CPU option into account (no /sys/devices/../cpuX/online file). Signed-off-by: Thomas Renninger Signed-off-by: Dominik Brodowski

cpupower: Do not show an empty Idle_Stats monitor if no idle driver is available

2011-08-15T18:03:05Z

By taking error values of: sysfs_get_idlestate_count(..); into account. Signed-off-by: Thomas Renninger Signed-off-by: Dominik Brodowski