linux-stable.git/tools/power/cpupower, branch linux-3.5.y

kbuild: Fix gcc -x syntax

2012-10-12T20:46:52+00:00

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

sched: Remove stale power aware scheduling remnants and dysfunctional knobs

2012-05-17T11:48:56+00:00

It's been broken forever (i.e. it's not scheduling in a power
aware fashion), as reported by Suresh and others sending
patches, and nobody cares enough to fix it properly ...
so remove it to make space free for something better.

There's various problems with the code as it stands today, first
and foremost the user interface which is bound to topology
levels and has multiple values per level. This results in a
state explosion which the administrator or distro needs to
master and almost nobody does.

Furthermore large configuration state spaces aren't good, it
means the thing doesn't just work right because it's either
under so many impossibe to meet constraints, or even if
there's an achievable state workloads have to be aware of
it precisely and can never meet it for dynamic workloads.

So pushing this kind of decision to user-space was a bad idea
even with a single knob - it's exponentially worse with knobs
on every node of the topology.

There is a proposal to replace the user interface with a single
3 state knob:

 sched_balance_policy := { performance, power, auto }

where 'auto' would be the preferred default which looks at things
like Battery/AC mode and possible cpufreq state or whatever the hw
exposes to show us power use expectations - but there's been no
progress on it in the past many months.

Aside from that, the actual implementation of the various knobs
is known to be broken. There have been sporadic attempts at
fixing things but these always stop short of reaching a mergable
state.

Therefore this wholesale removal with the hopes of spurring
people who care to come forward once again and work on a
coherent replacement.

Signed-off-by: Peter Zijlstra 
Cc: Suresh Siddha 
Cc: Arjan van de Ven 
Cc: Vincent Guittot 
Cc: Vaidyanathan Srinivasan 
Cc: Linus Torvalds 
Cc: Andrew Morton 
Link: http://lkml.kernel.org/r/1326104915.2442.53.camel@twins
Signed-off-by: Ingo Molnar

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

2012-03-03T13:40:11+00:00

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

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

2012-03-03T13:40:11+00:00

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

cpupower: Fix broken mask values

2012-03-03T13:40:11+00:00

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

cpupower tool: allow to build in a separate directory

2012-03-03T13:40:10+00:00

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

2012-03-03T13:40:10+00:00

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

cpupower tool: remove use of undefined variables from the clean target of the top makefile

2012-03-03T13:40:10+00:00

UTIL_BINS and IDLE_OBJS variables are not defined at all, so
there's no need to remove their content from the 'clean' target.

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

cpupower: Fix linking with --as-needed

2012-03-03T13:40:10+00:00

Fix linking order to avoid undefined reference errors when
using --as-needed linker flag.

Signed-off-by: Ozan Çağlayan 
Signed-off-by: Dominik Brodowski

cpupower: Remove unneeded code and by that fix a memleak

2012-03-03T13:40:10+00:00

Looks like some not needed debug code slipped in.
Also this code:
tmp = sysfs_get_idlestate_name(cpu, idlestates - 1);
performs a strdup and the mem was not freed again.
-> delete it.

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