Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752722AbcDWXfG (ORCPT ); Sat, 23 Apr 2016 19:35:06 -0400 Received: from mail-pf0-f181.google.com ([209.85.192.181]:32947 "EHLO mail-pf0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752277AbcDWXfD (ORCPT ); Sat, 23 Apr 2016 19:35:03 -0400 From: Eduardo Valentin To: Rui Zhang Cc: Linux PM , LKML , Eduardo Valentin Subject: [RFC PATCH 11/11] thermal: move trips attributes to tz->device.groups Date: Sat, 23 Apr 2016 16:34:30 -0700 Message-Id: <1461454470-27714-12-git-send-email-edubezval@gmail.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1461454470-27714-1-git-send-email-edubezval@gmail.com> References: <1461454470-27714-1-git-send-email-edubezval@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6177 Lines: 192 Finally, move the last thermal zone sysfs attributes to tz->device.groups: trips attributes. This requires adding a attribute_group to thermal_zone_device, creating it dynamically, and then setting all trips attributes in it. The trips attribute is then added to the tz->device.groups. As the removal of all attributes are handled by device core, the device remove calls are not needed anymore. Cc: Zhang Rui Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Eduardo Valentin --- drivers/thermal/thermal_core.c | 75 +++++++++++++++++++++--------------------- include/linux/thermal.h | 2 ++ 2 files changed, 39 insertions(+), 38 deletions(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 13a85d7..e844a04 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1184,8 +1184,9 @@ static const struct attribute_group *thermal_zone_attribute_groups[] = { */ static int create_trip_attrs(struct thermal_zone_device *tz, int mask) { - int indx; int size = sizeof(struct thermal_attr) * tz->trips; + struct attribute **attrs; + int indx; tz->trip_type_attrs = kzalloc(size, GFP_KERNEL); if (!tz->trip_type_attrs) @@ -1206,6 +1207,14 @@ static int create_trip_attrs(struct thermal_zone_device *tz, int mask) } } + attrs = kzalloc(sizeof(*attrs) * tz->trips * 3, GFP_KERNEL); + if (!attrs) { + kfree(tz->trip_type_attrs); + kfree(tz->trip_temp_attrs); + if (tz->ops->get_trip_hyst) + kfree(tz->trip_hyst_attrs); + return -ENOMEM; + } for (indx = 0; indx < tz->trips; indx++) { /* create trip type attribute */ @@ -1217,9 +1226,7 @@ static int create_trip_attrs(struct thermal_zone_device *tz, int mask) tz->trip_type_attrs[indx].name; tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO; tz->trip_type_attrs[indx].attr.show = trip_point_type_show; - - device_create_file(&tz->device, - &tz->trip_type_attrs[indx].attr); + attrs[indx] = &tz->trip_type_attrs[indx].attr.attr; /* create trip temp attribute */ snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH, @@ -1236,9 +1243,7 @@ static int create_trip_attrs(struct thermal_zone_device *tz, int mask) tz->trip_temp_attrs[indx].attr.store = trip_point_temp_store; } - - device_create_file(&tz->device, - &tz->trip_temp_attrs[indx].attr); + attrs[indx + tz->trips] = &tz->trip_type_attrs[indx].attr.attr; /* create Optional trip hyst attribute */ if (!tz->ops->get_trip_hyst) @@ -1256,45 +1261,37 @@ static int create_trip_attrs(struct thermal_zone_device *tz, int mask) tz->trip_hyst_attrs[indx].attr.store = trip_point_hyst_store; } - - device_create_file(&tz->device, - &tz->trip_hyst_attrs[indx].attr); + attrs[indx + tz->trips * 2] = + &tz->trip_type_attrs[indx].attr.attr; } - return 0; -} -static void remove_trip_attrs(struct thermal_zone_device *tz) -{ - int indx; + tz->trips_attribute_group.attrs = attrs; - for (indx = 0; indx < tz->trips; indx++) { - device_remove_file(&tz->device, - &tz->trip_type_attrs[indx].attr); - device_remove_file(&tz->device, - &tz->trip_temp_attrs[indx].attr); - if (tz->ops->get_trip_hyst) - device_remove_file(&tz->device, - &tz->trip_hyst_attrs[indx].attr); - } - kfree(tz->trip_type_attrs); - kfree(tz->trip_temp_attrs); - kfree(tz->trip_hyst_attrs); + return 0; } -static int thermal_zone_create_device_groups(struct thermal_zone_device *tz) +static int thermal_zone_create_device_groups(struct thermal_zone_device *tz, + int mask) { const struct attribute_group **groups; - int i, size; + int i, size, result; + + result = create_trip_attrs(tz, mask); + if (result) + return result; - size = ARRAY_SIZE(thermal_zone_attribute_groups) + 1; + /* we need one extra for trips and the NULL to terminate the array */ + size = ARRAY_SIZE(thermal_zone_attribute_groups) + 2; /* This also takes care of API requirement to be NULL terminated */ groups = kzalloc(size * sizeof(*groups), GFP_KERNEL); if (!groups) return -ENOMEM; - for (i = 0; i < size - 1; i++) + for (i = 0; i < size - 2; i++) groups[i] = thermal_zone_attribute_groups[i]; + groups[size - 2] = &tz->trips_attribute_group; + tz->device.groups = groups; return 0; @@ -1931,8 +1928,12 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type, tz->passive_delay = passive_delay; tz->polling_delay = polling_delay; + /* sys I/F */ /* Add nodes that are always present via .groups */ - thermal_zone_create_device_groups(tz); + result = thermal_zone_create_device_groups(tz, mask); + if (result) + goto unregister; + /* A new thermal zone needs to be updated anyway. */ atomic_set(&tz->need_update, 1); @@ -1944,11 +1945,6 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type, return ERR_PTR(result); } - /* sys I/F */ - result = create_trip_attrs(tz, mask); - if (result) - goto unregister; - for (count = 0; count < trips; count++) { if (tz->ops->get_trip_type(tz, count, &trip_type)) set_bit(count, &tz->trips_disabled); @@ -2053,7 +2049,10 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz) thermal_zone_device_set_polling(tz, 0); - remove_trip_attrs(tz); + kfree(tz->trip_type_attrs); + kfree(tz->trip_temp_attrs); + kfree(tz->trip_hyst_attrs); + kfree(tz->trips_attribute_group.attrs); thermal_set_governor(tz, NULL); thermal_remove_hwmon_sysfs(tz); diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 97b86c5..17c4431 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -28,6 +28,7 @@ #include #include #include +#include #include #include @@ -187,6 +188,7 @@ struct thermal_zone_device { int id; char type[THERMAL_NAME_LENGTH]; struct device device; + struct attribute_group trips_attribute_group; struct thermal_attr *trip_temp_attrs; struct thermal_attr *trip_type_attrs; struct thermal_attr *trip_hyst_attrs; -- 2.1.4