linux-stable.git/tools/power, branch linux-3.19.y

tools/power turbostat: Use $(CURDIR) instead of $(PWD) and add support for O= option in Makefile

2015-05-06T20:01:54+00:00

commit f82263c6989c31ae9b94cecddffb29dcbec38710 upstream.

Since commit ee0778a30153
("tools/power: turbostat: make Makefile a bit more capable")
turbostat's Makefile is using

  [...]
  BUILD_OUTPUT    := $(PWD)
  [...]

which obviously causes trouble when building "turbostat" with

  make -C /usr/src/linux/tools/power/x86/turbostat ARCH=x86 turbostat

because GNU make does not update nor guarantee that $PWD is set.

This patch changes the Makefile to use $CURDIR instead, which GNU make
guarantees to set and update (i.e. when using "make -C ...") and also
adds support for the O= option (see "make help" in your root of your
kernel source tree for more details).

Link: https://bugs.gentoo.org/show_bug.cgi?id=533918
Fixes: ee0778a30153 ("tools/power: turbostat: make Makefile a bit more capable")
Signed-off-by: Thomas D. 
Cc: Mark Asselstine 
Signed-off-by: Len Brown 
Signed-off-by: Greg Kroah-Hartman

tools / cpupower: Fix no idle state information return value

2014-12-19T22:01:12+00:00

sysfs_get_idlestate_count() returns an unsigned int.  Returning -ENODEV
is not the right thing to do here, and in any case is handled the same
way as if there are no states found.

Signed-off-by: Prarit Bhargava 
Acked-by: Thomas Renninger 
Signed-off-by: Rafael J. Wysocki

tools / cpupower: Correctly detect if running as root

2014-12-19T22:01:03+00:00

Some operations, like frequency-set, need root privileges. However,
the way that this is detected is not correct. The getuid() is called,
while in fact geteuid() should be. This way we can allow
distributions or users to set SETUID flags on the cpupower binary if
they want to and let regular users change the cpu frequency governor.

Signed-off-by: Michal Privoznik 
Acked-by: Thomas Renninger 
Signed-off-by: Rafael J. Wysocki

Revert "tools: cpupower: fix return checks for sysfs_get_idlestate_count()"

2014-12-14T21:14:16+00:00

This reverts commit 16b7c275c055cc36218404b5d147be7f76575087.

My previous commit 16b7c275c055 ("tools: cpupower: fix return checks for
sysfs_get_idlestate_count()") was not correct.  After looking
at the changelog for cpupower I noticed that Thomas had changed the return of
sysfs_get_idlestate_count() to an unsigned int to simplify the code.  The
problem is really that both he (in his original change) and I (in my new
change) missed the obvious that sysfs_get_idlestate_count()
can't return -ENODEV.  It should just return 0 for "no c-states".

Fixes: 16b7c275c055 (tools: cpupower: fix return checks for ...)
Signed-off-by: Prarit Bhargava 
Signed-off-by: Rafael J. Wysocki

tools: cpupower: fix return checks for sysfs_get_idlestate_count()

2014-12-05T02:12:34+00:00

Red Hat and Fedora use a bug reporting tool that gathers data about
"broken" systems called sosreport.  Among other things, it includes the
output of 'cpupower idle-info'.  Executing 'cpupower idle-info' on a
system that has cpuidle disabled via 'cpuidle.off=1' results in a 300
second hang in the cpupower application.

ie)
[root@intel-brickland-05]# cpupower idle-info
Could not determine cpuidle driver

Analyzing CPU 0:
Number of idle states: -19
[hang]

The problem is that the cpupower code only checks for a zero return from
sysfs_get_idlestate_count().  The function can return -ENODEV (-19) as
above.  This patch fixes callers to sysfs_get_idlestate_count() to check
the right return values.

Signed-off-by: Prarit Bhargava 
Signed-off-by: Thomas Renninger 
Signed-off-by: Rafael J. Wysocki

ACPICA: acpiexec: Do not put STDIN into raw mode unless it is a terminal.

2014-10-20T22:39:40+00:00

Eliminate an error message for batch-mode processing on unix
systems. ACPICA BZ 1114.

This patch is mainly for fixing the issues of acpiexec which is not in the
Linux upstream.

Link: https://bugs.acpica.org/show_bug.cgi?id=1114
Signed-off-by: Bob Moore 
Signed-off-by: Lv Zheng 
Signed-off-by: Rafael J. Wysocki

ACPICA: acpidump: Add ACPI 1.0 RSDP support.

2014-10-20T22:39:39+00:00

The acpidump currently always uses ACPI 2.0 format to dump RSDP, this patch
adds ACPI 1.0 RSDP support.

Link: https://bugs.acpica.org/show_bug.cgi?id=1097
Link: https://bugs.acpica.org/show_bug.cgi?id=1103
Signed-off-by: Lv Zheng 
Reported-and-tested-by: Rudolf Marek 
Reported-and-tested-by: Rafal 
Signed-off-by: Bob Moore 
Signed-off-by: Rafael J. Wysocki

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

2014-08-16T15:25:34+00:00

Pull idle update from Len Brown:
 "Two Intel-platform-specific updates to intel_idle, and a cosmetic
  tweak to the turbostat utility"

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: tweak whitespace in output format
  intel_idle: Broadwell support
  intel_idle: Disable Baytrail Core and Module C6 auto-demotion

tools/power turbostat: tweak whitespace in output format

2014-08-15T21:34:44+00:00

turbostat -S
output was off by 1 space before this patch.

Signed-off-by: Len Brown

Merge branch 'pm-tools'

2014-08-05T20:50:00+00:00

* pm-tools:
  cpupower: Remove redundant error check
  cpupower: bench: parse.c: Fix several minor errors
  cpupower: mperf monitor: Correct use of ! and &
  cpupower: Adjust MAINTAINERS file
  PM / tools: cpupower: drop negativity check on unsigned value