<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/tools/power, branch linux-5.2.y</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>tools/power turbostat: Fix CPU%C1 display value</title>
<updated>2019-09-21T05:18:44+00:00</updated>
<author>
<name>Srinivas Pandruvada</name>
<email>srinivas.pandruvada@linux.intel.com</email>
</author>
<published>2019-08-27T17:57:14+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=b5789a160c2d152027c72d6b30cb68311e84b0da'/>
<id>b5789a160c2d152027c72d6b30cb68311e84b0da</id>
<content type='text'>
[ Upstream commit 1e9042b9c8d46ada9ee7b3339a31f50d12e5d291 ]

In some case C1% will be wrong value, when platform doesn't have MSR for
C1 residency.

For example:
Core    CPU     CPU%c1
-       -       100.00
0       0       100.00
0       2       100.00
1       1       100.00
1       3       100.00

But adding Busy% will fix this
Core    CPU     Busy%   CPU%c1
-       -       99.77   0.23
0       0       99.77   0.23
0       2       99.77   0.23
1       1       99.77   0.23
1       3       99.77   0.23

This issue can be reproduced on most of the recent systems including
Broadwell, Skylake and later.

This is because if we don't select Busy% or Avg_MHz or Bzy_MHz then
mperf value will not be read from MSR, so it will be 0. But this
is required for C1% calculation when MSR for C1 residency is not present.
Same is true for C3, C6 and C7 column selection.

So add another define DO_BIC_READ(), which doesn't depend on user
column selection and use for mperf, C3, C6 and C7 related counters.
So when there is no platform support for C1 residency counters,
we still read these counters, if the CPU has support and user selected
display of CPU%c1.

Signed-off-by: Srinivas Pandruvada &lt;srinivas.pandruvada@linux.intel.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 1e9042b9c8d46ada9ee7b3339a31f50d12e5d291 ]

In some case C1% will be wrong value, when platform doesn't have MSR for
C1 residency.

For example:
Core    CPU     CPU%c1
-       -       100.00
0       0       100.00
0       2       100.00
1       1       100.00
1       3       100.00

But adding Busy% will fix this
Core    CPU     Busy%   CPU%c1
-       -       99.77   0.23
0       0       99.77   0.23
0       2       99.77   0.23
1       1       99.77   0.23
1       3       99.77   0.23

This issue can be reproduced on most of the recent systems including
Broadwell, Skylake and later.

This is because if we don't select Busy% or Avg_MHz or Bzy_MHz then
mperf value will not be read from MSR, so it will be 0. But this
is required for C1% calculation when MSR for C1 residency is not present.
Same is true for C3, C6 and C7 column selection.

So add another define DO_BIC_READ(), which doesn't depend on user
column selection and use for mperf, C3, C6 and C7 related counters.
So when there is no platform support for C1 residency counters,
we still read these counters, if the CPU has support and user selected
display of CPU%c1.

Signed-off-by: Srinivas Pandruvada &lt;srinivas.pandruvada@linux.intel.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: Add Ice Lake NNPI support</title>
<updated>2019-09-21T05:18:44+00:00</updated>
<author>
<name>Rajneesh Bhardwaj</name>
<email>rajneesh.bhardwaj@linux.intel.com</email>
</author>
<published>2019-06-14T07:39:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=54f4f3b381331a7d96b3df913c05ee5de0e2efb2'/>
<id>54f4f3b381331a7d96b3df913c05ee5de0e2efb2</id>
<content type='text'>
[ Upstream commit d93ea567fc4eec2d3581015e23d2c555f8b393ba ]

This enables turbostat utility on Ice Lake NNPI SoC.

Link: https://lkml.org/lkml/2019/6/5/1034
Signed-off-by: Rajneesh Bhardwaj &lt;rajneesh.bhardwaj@linux.intel.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit d93ea567fc4eec2d3581015e23d2c555f8b393ba ]

This enables turbostat utility on Ice Lake NNPI SoC.

Link: https://lkml.org/lkml/2019/6/5/1034
Signed-off-by: Rajneesh Bhardwaj &lt;rajneesh.bhardwaj@linux.intel.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: Fix Haswell Core systems</title>
<updated>2019-09-21T05:18:43+00:00</updated>
<author>
<name>Len Brown</name>
<email>len.brown@intel.com</email>
</author>
<published>2019-08-31T18:09:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=8bae84e5203b4c6aa5b1f6da00ae7850e51951e9'/>
<id>8bae84e5203b4c6aa5b1f6da00ae7850e51951e9</id>
<content type='text'>
[ Upstream commit cd188af5282d9f9e65f63915b13239bafc746f8d ]

turbostat: cpu0: msr offset 0x630 read failed: Input/output error

because Haswell Core does not have C8-C10.

Output C8-C10 only on Haswell ULT.

Fixes: f5a4c76ad7de ("tools/power turbostat: consolidate duplicate model numbers")

Reported-by: Prarit Bhargava &lt;prarit@redhat.com&gt;
Suggested-by: Kosuke Tatsukawa &lt;tatsu@ab.jp.nec.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit cd188af5282d9f9e65f63915b13239bafc746f8d ]

turbostat: cpu0: msr offset 0x630 read failed: Input/output error

because Haswell Core does not have C8-C10.

Output C8-C10 only on Haswell ULT.

Fixes: f5a4c76ad7de ("tools/power turbostat: consolidate duplicate model numbers")

Reported-by: Prarit Bhargava &lt;prarit@redhat.com&gt;
Suggested-by: Kosuke Tatsukawa &lt;tatsu@ab.jp.nec.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: fix buffer overrun</title>
<updated>2019-09-21T05:18:43+00:00</updated>
<author>
<name>Naoya Horiguchi</name>
<email>n-horiguchi@ah.jp.nec.com</email>
</author>
<published>2019-04-03T07:02:14+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=0926ee9f5327c77db7efd60dbc3989546cc525c2'/>
<id>0926ee9f5327c77db7efd60dbc3989546cc525c2</id>
<content type='text'>
[ Upstream commit eeb71c950bc6eee460f2070643ce137e067b234c ]

turbostat could be terminated by general protection fault on some latest
hardwares which (for example) support 9 levels of C-states and show 18
"tADDED" lines. That bloats the total output and finally causes buffer
overrun.  So let's extend the buffer to avoid this.

Signed-off-by: Naoya Horiguchi &lt;n-horiguchi@ah.jp.nec.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit eeb71c950bc6eee460f2070643ce137e067b234c ]

turbostat could be terminated by general protection fault on some latest
hardwares which (for example) support 9 levels of C-states and show 18
"tADDED" lines. That bloats the total output and finally causes buffer
overrun.  So let's extend the buffer to avoid this.

Signed-off-by: Naoya Horiguchi &lt;n-horiguchi@ah.jp.nec.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: fix file descriptor leaks</title>
<updated>2019-09-21T05:18:43+00:00</updated>
<author>
<name>Gustavo A. R. Silva</name>
<email>gustavo@embeddedor.com</email>
</author>
<published>2019-04-08T16:12:40+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=94132aca9472a6cff8292149f5cea69f6ffeb51e'/>
<id>94132aca9472a6cff8292149f5cea69f6ffeb51e</id>
<content type='text'>
[ Upstream commit 605736c6929d541c78a85dffae4d33a23b6b2149 ]

Fix file descriptor leaks by closing fp before return.

Addresses-Coverity-ID: 1444591 ("Resource leak")
Addresses-Coverity-ID: 1444592 ("Resource leak")
Fixes: 5ea7647b333f ("tools/power turbostat: Warn on bad ACPI LPIT data")
Signed-off-by: Gustavo A. R. Silva &lt;gustavo@embeddedor.com&gt;
Reviewed-by: Prarit Bhargava &lt;prarit@redhat.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 605736c6929d541c78a85dffae4d33a23b6b2149 ]

Fix file descriptor leaks by closing fp before return.

Addresses-Coverity-ID: 1444591 ("Resource leak")
Addresses-Coverity-ID: 1444592 ("Resource leak")
Fixes: 5ea7647b333f ("tools/power turbostat: Warn on bad ACPI LPIT data")
Signed-off-by: Gustavo A. R. Silva &lt;gustavo@embeddedor.com&gt;
Reviewed-by: Prarit Bhargava &lt;prarit@redhat.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: fix leak of file descriptor on error return path</title>
<updated>2019-09-21T05:18:43+00:00</updated>
<author>
<name>Colin Ian King</name>
<email>colin.king@canonical.com</email>
</author>
<published>2019-04-08T09:00:44+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=0a1ba2cd9d620ec815ca901ca19d6ffb36f3b551'/>
<id>0a1ba2cd9d620ec815ca901ca19d6ffb36f3b551</id>
<content type='text'>
[ Upstream commit 15423b958f33132152e209e98df0dedc7a78f22c ]

Currently the error return path does not close the file fp and leaks
a file descriptor. Fix this by closing the file.

Fixes: 5ea7647b333f ("tools/power turbostat: Warn on bad ACPI LPIT data")
Signed-off-by: Colin Ian King &lt;colin.king@canonical.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 15423b958f33132152e209e98df0dedc7a78f22c ]

Currently the error return path does not close the file fp and leaks
a file descriptor. Fix this by closing the file.

Fixes: 5ea7647b333f ("tools/power turbostat: Warn on bad ACPI LPIT data")
Signed-off-by: Colin Ian King &lt;colin.king@canonical.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power x86_energy_perf_policy: Fix argument parsing</title>
<updated>2019-09-21T05:18:42+00:00</updated>
<author>
<name>Zephaniah E. Loss-Cutler-Hull</name>
<email>zephaniah@gmail.com</email>
</author>
<published>2019-02-09T13:25:48+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=caab8b8b3acafd7406ba21707a46a5165d6eaaee'/>
<id>caab8b8b3acafd7406ba21707a46a5165d6eaaee</id>
<content type='text'>
[ Upstream commit 03531482402a2bc4ab93cf6dde46833775e035e9 ]

The -w argument in x86_energy_perf_policy currently triggers an
unconditional segfault.

This is because the argument string reads: "+a:c:dD:E:e:f:m:M:rt:u:vw" and
yet the argument handler expects an argument.

When parse_optarg_string is called with a null argument, we then proceed to
crash in strncmp, not horribly friendly.

The man page describes -w as taking an argument, the long form
(--hwp-window) is correctly marked as taking a required argument, and the
code expects it.

As such, this patch simply marks the short form (-w) as requiring an
argument.

Signed-off-by: Zephaniah E. Loss-Cutler-Hull &lt;zephaniah@gmail.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 03531482402a2bc4ab93cf6dde46833775e035e9 ]

The -w argument in x86_energy_perf_policy currently triggers an
unconditional segfault.

This is because the argument string reads: "+a:c:dD:E:e:f:m:M:rt:u:vw" and
yet the argument handler expects an argument.

When parse_optarg_string is called with a null argument, we then proceed to
crash in strncmp, not horribly friendly.

The man page describes -w as taking an argument, the long form
(--hwp-window) is correctly marked as taking a required argument, and the
code expects it.

As such, this patch simply marks the short form (-w) as requiring an
argument.

Signed-off-by: Zephaniah E. Loss-Cutler-Hull &lt;zephaniah@gmail.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power x86_energy_perf_policy: Fix "uninitialized variable" warnings at -O2</title>
<updated>2019-09-21T05:18:42+00:00</updated>
<author>
<name>Ben Hutchings</name>
<email>ben@decadent.org.uk</email>
</author>
<published>2018-09-16T15:05:53+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=edf8ba32bc2bf2f5a3a794a326fc3de110809920'/>
<id>edf8ba32bc2bf2f5a3a794a326fc3de110809920</id>
<content type='text'>
[ Upstream commit adb8049097a9ec4acd09fbd3aa8636199a78df8a ]

x86_energy_perf_policy first uses __get_cpuid() to check the maximum
CPUID level and exits if it is too low.  It then assumes that later
calls will succeed (which I think is architecturally guaranteed).  It
also assumes that CPUID works at all (which is not guaranteed on
x86_32).

If optimisations are enabled, gcc warns about potentially
uninitialized variables.  Fix this by adding an exit-on-error after
every call to __get_cpuid() instead of just checking the maximum
level.

Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit adb8049097a9ec4acd09fbd3aa8636199a78df8a ]

x86_energy_perf_policy first uses __get_cpuid() to check the maximum
CPUID level and exits if it is too low.  It then assumes that later
calls will succeed (which I think is architecturally guaranteed).  It
also assumes that CPUID works at all (which is not guaranteed on
x86_32).

If optimisations are enabled, gcc warns about potentially
uninitialized variables.  Fix this by adding an exit-on-error after
every call to __get_cpuid() instead of just checking the maximum
level.

Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: Fix caller parameter of get_tdp_amd()</title>
<updated>2019-09-06T08:23:41+00:00</updated>
<author>
<name>Pu Wen</name>
<email>puwen@hygon.cn</email>
</author>
<published>2019-08-31T02:19:58+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=3698cd854f436b02ca2db6cf1a8d5a0221dcb03d'/>
<id>3698cd854f436b02ca2db6cf1a8d5a0221dcb03d</id>
<content type='text'>
commit 9cfa8e042f7cbb1994cc5923e46c78b36f6054f4 upstream.

Commit 9392bd98bba760be96ee ("tools/power turbostat: Add support for AMD
Fam 17h (Zen) RAPL") add a function get_tdp_amd(), the parameter is CPU
family. But the rapl_probe_amd() function use wrong model parameter.
Fix the wrong caller parameter of get_tdp_amd() to use family.

Cc: &lt;stable@vger.kernel.org&gt; # v5.1+
Signed-off-by: Pu Wen &lt;puwen@hygon.cn&gt;
Reviewed-by: Calvin Walton &lt;calvin.walton@kepstin.ca&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 9cfa8e042f7cbb1994cc5923e46c78b36f6054f4 upstream.

Commit 9392bd98bba760be96ee ("tools/power turbostat: Add support for AMD
Fam 17h (Zen) RAPL") add a function get_tdp_amd(), the parameter is CPU
family. But the rapl_probe_amd() function use wrong model parameter.
Fix the wrong caller parameter of get_tdp_amd() to use family.

Cc: &lt;stable@vger.kernel.org&gt; # v5.1+
Signed-off-by: Pu Wen &lt;puwen@hygon.cn&gt;
Reviewed-by: Calvin Walton &lt;calvin.walton@kepstin.ca&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>cpupower : frequency-set -r option misses the last cpu in related cpu list</title>
<updated>2019-07-26T07:10:21+00:00</updated>
<author>
<name>Abhishek Goel</name>
<email>huntbag@linux.vnet.ibm.com</email>
</author>
<published>2019-05-29T09:30:33+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=4d5a27a47a4e8a00689cbab2fdf5bd10a932bf06'/>
<id>4d5a27a47a4e8a00689cbab2fdf5bd10a932bf06</id>
<content type='text'>
[ Upstream commit 04507c0a9385cc8280f794a36bfff567c8cc1042 ]

To set frequency on specific cpus using cpupower, following syntax can
be used :
cpupower -c #i frequency-set -f #f -r

While setting frequency using cpupower frequency-set command, if we use
'-r' option, it is expected to set frequency for all cpus related to
cpu #i. But it is observed to be missing the last cpu in related cpu
list. This patch fixes the problem.

Signed-off-by: Abhishek Goel &lt;huntbag@linux.vnet.ibm.com&gt;
Reviewed-by: Thomas Renninger &lt;trenn@suse.de&gt;
Signed-off-by: Shuah Khan &lt;skhan@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 04507c0a9385cc8280f794a36bfff567c8cc1042 ]

To set frequency on specific cpus using cpupower, following syntax can
be used :
cpupower -c #i frequency-set -f #f -r

While setting frequency using cpupower frequency-set command, if we use
'-r' option, it is expected to set frequency for all cpus related to
cpu #i. But it is observed to be missing the last cpu in related cpu
list. This patch fixes the problem.

Signed-off-by: Abhishek Goel &lt;huntbag@linux.vnet.ibm.com&gt;
Reviewed-by: Thomas Renninger &lt;trenn@suse.de&gt;
Signed-off-by: Shuah Khan &lt;skhan@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
</feed>
