linux.git/tools/power/cpupower, branch v4.20

tools cpupower: Override CFLAGS assignments

2018-11-06T15:54:16+00:00

So user could specify outside CFLAGS values.

Cc: Thomas Renninger 
Cc: Shuah Khan 
Signed-off-by: Jiri Olsa 
Acked-by: Thomas Renninger 
Signed-off-by: Shuah Khan (Samsung OSG)

tools cpupower debug: Allow to use outside build flags

2018-11-06T15:54:16+00:00

Adding CFLAGS and LDFLAGS to be used during the build.

Cc: Thomas Renninger 
Cc: Shuah Khan 
Signed-off-by: Jiri Olsa 
Acked-by: Thomas Renninger 
Signed-off-by: Shuah Khan (Samsung OSG)

tools/power/cpupower: fix compilation with STATIC=true

2018-11-06T15:54:16+00:00

Rename duplicate sysfs_read_file into cpupower_read_sysfs and fix linking.

Signed-off-by: Konstantin Khlebnikov 
Acked-by: Thomas Renninger 
Cc: 
Signed-off-by: Shuah Khan (Samsung OSG)

Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-10-23T15:16:40+00:00

Pull x86 cpu updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Add support for the "Dhyana" x86 CPUs by Hygon: these are licensed
     based on the AMD Zen architecture, and are built and sold in China,
     for domestic datacenter use. The code is pretty close to AMD
     support, mostly with a few quirks and enumeration differences. (Pu
     Wen)

   - Enable CPUID support on Cyrix 6x86/6x86L processors"

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/cpupower: Add Hygon Dhyana support
  cpufreq: Add Hygon Dhyana support
  ACPI: Add Hygon Dhyana support
  x86/xen: Add Hygon Dhyana support to Xen
  x86/kvm: Add Hygon Dhyana support to KVM
  x86/mce: Add Hygon Dhyana support to the MCA infrastructure
  x86/bugs: Add Hygon Dhyana to the respective mitigation machinery
  x86/apic: Add Hygon Dhyana support
  x86/pci, x86/amd_nb: Add Hygon Dhyana support to PCI and northbridge
  x86/amd_nb: Check vendor in AMD-only functions
  x86/alternative: Init ideal_nops for Hygon Dhyana
  x86/events: Add Hygon Dhyana support to PMU infrastructure
  x86/smpboot: Do not use BSP INIT delay and MWAIT to idle on Dhyana
  x86/cpu/mtrr: Support TOP_MEM2 and get MTRR number
  x86/cpu: Get cache info and setup cache cpumap for Hygon Dhyana
  x86/cpu: Create Hygon Dhyana architecture support file
  x86/CPU: Change query logic so CPUID is enabled before testing
  x86/CPU: Use correct macros for Cyrix calls

cpupower: Fix coredump on VMWare

2018-10-08T15:19:15+00:00

cpupower crashes on VMWare guests.  The guests have the AMD PStateDef MSR
(0xC0010064 + state number) set to zero.  As a result fid and did are zero
and the crash occurs because of a divide by zero (cof = fid/did).  This
can be prevented by checking the enable bit in the PStateDef MSR before
calculating cof.  By doing this the value of pstate[i] remains zero and
the value can be tested before displaying the active Pstates.

Check the enable bit in the PstateDef register for all supported families
and only print out enabled Pstates.

Signed-off-by: Prarit Bhargava 
Cc: Shuah Khan 
Cc: Stafford Horne 
Signed-off-by: Shuah Khan (Samsung OSG)

cpupower: Fix AMD Family 0x17 msr_pstate size

2018-10-08T15:19:05+00:00

The msr_pstate data is only 63 bits long and should be 64 bits.

Add in the missing bit from res1 for AMD Family 0x17.

Reference: https://www.amd.com/system/files/TechDocs/54945_PPR_Family_17h_Models_00h-0Fh.pdf, page 138.

Signed-off-by: Prarit Bhargava 
Cc: Shuah Khan 
Cc: Stafford Horne 
Signed-off-by: Shuah Khan (Samsung OSG)

tools/cpupower: Add Hygon Dhyana support

2018-10-04T07:57:25+00:00

The tool cpupower is useful to get CPU frequency information and monitor
power stats on the Hygon Dhyana platform. So add Hygon Dhyana support to
it by checking vendor and family to share the code path of AMD family
17h.

Signed-off-by: Pu Wen 
Signed-off-by: Borislav Petkov 
Acked-by: Shuah Khan (Samsung OSG) 
CC: Prarit Bhargava 
CC: Shuah Khan 
CC: Thomas Gleixner 
CC: Thomas Renninger 
CC: linux-pm@vger.kernel.org
Link: http://lkml.kernel.org/r/5ce86123a7b9dad925ac583d88d2f921040e859b.1538583282.git.puwen@hygon.cn

cpupower: remove stringop-truncation waring

2018-08-28T21:46:12+00:00

The strncpy doesn't null terminate the string because the size is too
short by one byte.

parse.c: In function ‘prepare_default_config’:
parse.c:148:2: warning: ‘strncpy’ output truncated before terminating
    nul copying 8 bytes from a string of the same length
    [-Wstringop-truncation]
  strncpy(config->governor, "ondemand", 8);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The normal method of passing the length of the destination buffer works
correctly here.

Fixes: 7fe2f6399a84 ("cpupowerutils - cpufrequtils extended with quite some features")
Signed-off-by: Anders Roxell 
Signed-off-by: Shuah Khan (Samsung OSG)

treewide: convert ISO_8859-1 text comments to utf-8

2018-08-24T01:48:43+00:00

Almost all files in the kernel are either plain text or UTF-8 encoded.  A
couple however are ISO_8859-1, usually just a few characters in a C
comments, for historic reasons.

This converts them all to UTF-8 for consistency.

Link: http://lkml.kernel.org/r/20180724111600.4158975-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann 
Acked-by: Simon Horman 			[IPVS portion]
Acked-by: Jonathan Cameron 	[IIO]
Acked-by: Michael Ellerman 			[powerpc]
Acked-by: Rob Herring 
Cc: Joe Perches 
Cc: Arnd Bergmann 
Cc: Samuel Ortiz 
Cc: "David S. Miller" 
Cc: Rob Herring 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

cpupower : Fix header name to read idle state name

2018-05-29T16:48:33+00:00

The names of the idle states in the output of cpupower monitor command are
truncated to 4 characters. On POWER9, this creates ambiguity as the states
are named "stop0", "stop1", etc.

root:~# cpupower monitor
              |Idle_Stats
PKG |CORE|CPU | snoo | stop | stop | stop | stop | stop | stop
   0|   0|   0|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  1.90
   0|   0|   1|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
   0|   0|   2|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
   0|   0|   3|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00

This patch modifies the output to print the state name that results in a
legible output. The names will be printed with atmost 1 padding in left.

root:~# cpupower monitor
              | Idle_Stats
 PKG|CORE| CPU|snooze|stop0L| stop0|stop1L| stop1|stop2L| stop2
   0|   0|   0|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.72
   0|   0|   1|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
   0|   0|   2|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
   0|   0|   3|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00

This patch does not affect the output for intel.
Output for intel before applying the patch:

root:~# cpupower monitor
    |Idle_Stats
CPU | POLL | C1-S | C1E- | C3-S | C6-S | C7s- | C8-S | C9-S | C10-
   0|  0.00|  0.14|  0.39|  0.35|  7.41|  0.00| 17.67|  1.01| 70.03
   2|  0.00|  0.19|  0.47|  0.10|  6.50|  0.00| 29.66|  2.17| 58.07
   1|  0.00|  0.11|  0.50|  1.50|  9.11|  0.18| 18.19|  0.40| 66.63
   3|  0.00|  0.67|  0.42|  0.03|  5.84|  0.00| 12.58|  0.77| 77.14

Output for intel after applying the patch:

root:~# cpupower monitor
    | Idle_Stats
 CPU| POLL | C1-S | C1E- | C3-S | C6-S | C7s- | C8-S | C9-S | C10-
   0|  0.03|  0.33|  1.01|  0.27|  3.03|  0.00| 19.18|  0.00| 71.24
   2|  0.00|  1.58|  0.58|  0.42|  8.55|  0.09| 21.11|  0.99| 63.32
   1|  0.00|  1.26|  0.88|  0.43|  9.00|  0.02|  7.78|  4.65| 71.91
   3|  0.00|  0.30|  0.42|  0.06| 13.62|  0.21| 30.29|  0.00| 52.45

Signed-off-by: Abhishek Goel 
Signed-off-by: Shuah Khan (Samsung OSG)