From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: hdegoede@redhat.com, mgross@linux.intel.com
Cc: platform-driver-x86@vger.kernel.org,
linux-kernel@vger.kernel.org,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Subject: tools/power/x86/intel-speed-select: Fixes for regression
Date: Sun, 20 Dec 2020 23:18:57 -0800 [thread overview]
Message-ID: <20201221071859.2783957-1-srinivas.pandruvada@linux.intel.com> (raw)
One side-effect of fixing the scaling frequency limits using the
commit eacc9c5a927e ("cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max()
for turbo disabled") causes stale HWP_CAP.GUARANTEED to be used as max.
Without processing HWP interrupts, user space needs to be able to update
a new max while Intel SST is in use. This is not a problem as the
change of guaranteed is caused by user space action, so user space knows
that guarantee will change.
This series causes user space to trigger scaling_max_freq update with
the new base_frequency.
Srinivas Pandruvada (2):
tools/power/x86/intel-speed-select: Set scaling_max_freq to
base_frequency
tools/power/x86/intel-speed-select: Set higher of cpuinfo_max_freq or
base_frequency
.../x86/intel-speed-select/isst-config.c | 32 +++++++++++++++++++
1 file changed, 32 insertions(+)
--
2.29.2
next reply other threads:[~2020-12-21 7:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-21 7:18 Srinivas Pandruvada [this message]
2020-12-21 7:18 ` [PATCH 1/2] tools/power/x86/intel-speed-select: Set scaling_max_freq to base_frequency Srinivas Pandruvada
2020-12-21 7:18 ` [PATCH 2/2] tools/power/x86/intel-speed-select: Set higher of cpuinfo_max_freq or base_frequency Srinivas Pandruvada
2021-01-04 11:56 ` tools/power/x86/intel-speed-select: Fixes for regression Hans de Goede
2021-01-04 11:57 ` Hans de Goede
2021-01-04 12:01 ` Srinivas Pandruvada
2021-01-04 12:00 ` Srinivas Pandruvada
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201221071859.2783957-1-srinivas.pandruvada@linux.intel.com \
--to=srinivas.pandruvada@linux.intel.com \
--cc=hdegoede@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mgross@linux.intel.com \
--cc=platform-driver-x86@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.