lkml.org 
[lkml]   [2021]   [Jul]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RESEND PATCH] perf/x86/intel/uncore: Fix IIO cleanup mapping procedure for SNR/ICX
Date
From: Alexander Antonov <alexander.antonov@linux.intel.com>

Cleanup mapping procedure for IIO PMU is needed to free memory which was
allocated for topology data and for attributes in IIO mapping
attribute_group.
Current implementation of this procedure for Snowridge and Icelake Server
platforms doesn't free allocated memory that can be a reason for memory
leak issue.
Fix the issue with IIO cleanup mapping procedure for these platforms
to release allocated memory.

Fixes: 10337e95e04c ("perf/x86/intel/uncore: Enable I/O stacks to IIO PMON mapping on ICX")

Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Alexander Antonov <alexander.antonov@linux.intel.com>
---
arch/x86/events/intel/uncore_snbep.c | 40 +++++++++++++++++++---------
1 file changed, 28 insertions(+), 12 deletions(-)

diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index bb6eb1e5569c..54cdbb96e628 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -3836,26 +3836,32 @@ pmu_iio_set_mapping(struct intel_uncore_type *type, struct attribute_group *ag)
return ret;
}

-static int skx_iio_set_mapping(struct intel_uncore_type *type)
-{
- return pmu_iio_set_mapping(type, &skx_iio_mapping_group);
-}
-
-static void skx_iio_cleanup_mapping(struct intel_uncore_type *type)
+static void
+pmu_iio_cleanup_mapping(struct intel_uncore_type *type, struct attribute_group *ag)
{
- struct attribute **attr = skx_iio_mapping_group.attrs;
+ struct attribute **attr = ag->attrs;

if (!attr)
return;

for (; *attr; attr++)
kfree((*attr)->name);
- kfree(attr_to_ext_attr(*skx_iio_mapping_group.attrs));
- kfree(skx_iio_mapping_group.attrs);
- skx_iio_mapping_group.attrs = NULL;
+ kfree(attr_to_ext_attr(*ag->attrs));
+ kfree(ag->attrs);
+ ag->attrs = NULL;
kfree(type->topology);
}

+static int skx_iio_set_mapping(struct intel_uncore_type *type)
+{
+ return pmu_iio_set_mapping(type, &skx_iio_mapping_group);
+}
+
+static void skx_iio_cleanup_mapping(struct intel_uncore_type *type)
+{
+ pmu_iio_cleanup_mapping(type, &skx_iio_mapping_group);
+}
+
static struct intel_uncore_type skx_uncore_iio = {
.name = "iio",
.num_counters = 4,
@@ -4499,6 +4505,11 @@ static int snr_iio_set_mapping(struct intel_uncore_type *type)
return pmu_iio_set_mapping(type, &snr_iio_mapping_group);
}

+static void snr_iio_cleanup_mapping(struct intel_uncore_type *type)
+{
+ pmu_iio_cleanup_mapping(type, &snr_iio_mapping_group);
+}
+
static struct intel_uncore_type snr_uncore_iio = {
.name = "iio",
.num_counters = 4,
@@ -4515,7 +4526,7 @@ static struct intel_uncore_type snr_uncore_iio = {
.attr_update = snr_iio_attr_update,
.get_topology = snr_iio_get_topology,
.set_mapping = snr_iio_set_mapping,
- .cleanup_mapping = skx_iio_cleanup_mapping,
+ .cleanup_mapping = snr_iio_cleanup_mapping,
};

static struct intel_uncore_type snr_uncore_irp = {
@@ -5090,6 +5101,11 @@ static int icx_iio_set_mapping(struct intel_uncore_type *type)
return pmu_iio_set_mapping(type, &icx_iio_mapping_group);
}

+static void icx_iio_cleanup_mapping(struct intel_uncore_type *type)
+{
+ pmu_iio_cleanup_mapping(type, &icx_iio_mapping_group);
+}
+
static struct intel_uncore_type icx_uncore_iio = {
.name = "iio",
.num_counters = 4,
@@ -5107,7 +5123,7 @@ static struct intel_uncore_type icx_uncore_iio = {
.attr_update = icx_iio_attr_update,
.get_topology = icx_iio_get_topology,
.set_mapping = icx_iio_set_mapping,
- .cleanup_mapping = skx_iio_cleanup_mapping,
+ .cleanup_mapping = icx_iio_cleanup_mapping,
};

static struct intel_uncore_type icx_uncore_irp = {
base-commit: 3dbdb38e286903ec220aaf1fb29a8d94297da246
--
2.21.3

\
 
 \ /
  Last update: 2021-07-07 08:57    [W:0.037 / U:0.276 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site