This is a note to let you know that I've just added the patch titled
platform/x86: intel-uncore-freq: Conditionally create attribute for read frequency
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
platform-x86-intel-uncore-freq-conditionally-create-attribute-for-read-frequency.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4d73c6772ab771cbbe7e46a73e7c78ba490350fa Mon Sep 17 00:00:00 2001
From: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
Date: Wed, 4 Oct 2023 11:19:15 -0700
Subject: platform/x86: intel-uncore-freq: Conditionally create attribute for read frequency
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From: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
commit 4d73c6772ab771cbbe7e46a73e7c78ba490350fa upstream.
When the current uncore frequency can't be read, don't create attribute
"current_freq_khz" as any read will fail later. Some user space
applications like turbostat fail to continue with the failure. So, check
error during attribute creation.
Fixes: 414eef27283a ("platform/x86/intel/uncore-freq: Display uncore current frequency")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231004181915.1887913-1-srinivas.pandruvada@xxxxxxxxxxxxxxx
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c
+++ b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c
@@ -176,7 +176,7 @@ show_uncore_data(initial_max_freq_khz);
static int create_attr_group(struct uncore_data *data, char *name)
{
- int ret, index = 0;
+ int ret, freq, index = 0;
init_attribute_rw(max_freq_khz);
init_attribute_rw(min_freq_khz);
@@ -197,7 +197,11 @@ static int create_attr_group(struct unco
data->uncore_attrs[index++] = &data->min_freq_khz_dev_attr.attr;
data->uncore_attrs[index++] = &data->initial_min_freq_khz_dev_attr.attr;
data->uncore_attrs[index++] = &data->initial_max_freq_khz_dev_attr.attr;
- data->uncore_attrs[index++] = &data->current_freq_khz_dev_attr.attr;
+
+ ret = uncore_read_freq(data, &freq);
+ if (!ret)
+ data->uncore_attrs[index++] = &data->current_freq_khz_dev_attr.attr;
+
data->uncore_attrs[index] = NULL;
data->uncore_attr_group.name = name;
Patches currently in stable-queue which might be from srinivas.pandruvada@xxxxxxxxxxxxxxx are
queue-6.5/platform-x86-intel-uncore-freq-conditionally-create-attribute-for-read-frequency.patch
