powerpc/perf/hv-24x7: Move cpumask file to top folder of hv-24x7 driver

Commit 792f73f747b8 ("powerpc/hv-24x7: Add sysfs files inside hv-24x7
device to show cpumask") added cpumask file as part of hv-24x7 driver
inside the interface folder. The cpumask file is supposed to be in the
top folder of the PMU driver in order to make hotplug work.

This patch fixes that issue and creates new group 'cpumask_attr_group'
to add cpumask file and make sure it added in top folder.

  command:# cat /sys/devices/hv_24x7/cpumask
  0

Fixes: 792f73f747b8 ("powerpc/hv-24x7: Add sysfs files inside hv-24x7 device to show cpumask")
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200821080610.123997-1-kjain@linux.ibm.com

diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
index f7e32f2..e82fc37 100644 (file)
--- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
@@ -43,7 +43,7 @@ Description:  read only
                This sysfs interface exposes the number of cores per chip
                present in the system.
 
-What:          /sys/devices/hv_24x7/interface/cpumask
+What:          /sys/devices/hv_24x7/cpumask
 Date:          July 2020
 Contact:       Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
 Description:   read only

diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index cdb7bfb..6e7e820 100644 (file)
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -1128,6 +1128,15 @@ static struct bin_attribute *if_bin_attrs[] = {
        NULL,
 };
 
+static struct attribute *cpumask_attrs[] = {
+       &dev_attr_cpumask.attr,
+       NULL,
+};
+
+static struct attribute_group cpumask_attr_group = {
+       .attrs = cpumask_attrs,
+};
+
 static struct attribute *if_attrs[] = {
        &dev_attr_catalog_len.attr,
        &dev_attr_catalog_version.attr,
@@ -1135,7 +1144,6 @@ static struct attribute *if_attrs[] = {
        &dev_attr_sockets.attr,
        &dev_attr_chipspersocket.attr,
        &dev_attr_coresperchip.attr,
-       &dev_attr_cpumask.attr,
        NULL,
 };
 
@@ -1151,6 +1159,7 @@ static const struct attribute_group *attr_groups[] = {
        &event_desc_group,
        &event_long_desc_group,
        &if_group,
+       &cpumask_attr_group,
        NULL,
 };