linux-stable.git/tools/power/cpupower/utils, branch linux-3.2.y

cpupower: Fix turbo frequency reporting for pre-Sandy Bridge cores

2017-07-18T17:38:42+00:00

commit 4cca0457686e4ee1677d69469e4ddfd94d389a80 upstream.

The switch that conditionally sets CPUPOWER_CAP_HAS_TURBO_RATIO and
CPUPOWER_CAP_IS_SNB flags is missing a break, so all cores get both
flags set and an assumed base clock of 100 MHz for turbo values.

Reported-by: GSR 
Tested-by: GSR 
References: https://bugs.debian.org/859978
Fixes: 8fb2e440b223 (cpupower: Show Intel turbo ratio support via ...)
Signed-off-by: Ben Hutchings 
Signed-off-by: Rafael J. Wysocki

cpupower: Fix segfault due to incorrect getopt_long arugments

2014-02-15T19:20:14+00:00

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

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

2011-08-19T15:13:56+00:00

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

2011-08-19T15:00:02+00:00

Loosely based on a patch for cpufrequtils, submittted by
Sergey Dryabzhinsky  and

signed-off-by: Matt Turner 
Signed-off-by: Dominik Brodowski

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

2011-08-15T18:03:16+00:00

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

2011-08-15T18:03:10+00:00

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

2011-08-15T18:03:05+00:00

By taking error values of:
sysfs_get_idlestate_count(..);
into account.

Signed-off-by: Thomas Renninger 
Signed-off-by: Dominik Brodowski

cpupower: mperf monitor - Use TSC to calculate max frequency if possible

2011-08-15T18:02:59+00:00

Which makes the implementation independent from cpufreq drivers.
Therefore this would also work on a Xen kernel where the hypervisor
is doing frequency switching and idle entering.

Signed-off-by: Thomas Renninger 
Signed-off-by: Dominik Brodowski

cpupower: Do detect IDA (opportunistic processor performance) via cpuid

2011-07-29T17:37:27+00:00

IA32-Intel Devel guide Volume 3A - 14.3.2.1
-------------------------------------------
...
Opportunistic processor performance operation can be disabled by setting bit 38 of
IA32_MISC_ENABLES. This mechanism is intended for BIOS only. If
IA32_MISC_ENABLES[38] is set, CPUID.06H:EAX[1] will return 0.

Better detect things via cpuid, this cleans up the code a bit
and the MSR parts were not working correctly anyway.

Signed-off-by: Thomas Renninger 
CC: lenb@kernel.org
CC: linux@dominikbrodowski.net
CC: cpufreq@vger.kernel.org
Signed-off-by: Dominik Brodowski

cpupower: Show Intel turbo ratio support via ./cpupower frequency-info

2011-07-29T17:37:25+00:00

This adds the last piece missing from turbostat (if called with -v).
It shows on Intel machines supporting Turbo Boost how many cores
have to be active/idle to enter which boost mode (frequency).

Whether the HW really enters these boost modes can be verified via
./cpupower monitor.

Signed-off-by: Thomas Renninger 
CC: lenb@kernel.org
CC: linux@dominikbrodowski.net
CC: cpufreq@vger.kernel.org
Signed-off-by: Dominik Brodowski