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Message-ID: <314e5b15-de28-4336-8a0f-f3c08183a6b1@arm.com>
Date: Wed, 3 Jan 2024 20:10:07 +0000
From: Lukasz Luba <lukasz.luba@....com>
To: "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
Linux PM <linux-pm@...r.kernel.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>, Zhang Rui <rui.zhang@...el.com>,
Linux ACPI <linux-acpi@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 6/6] thermal: netlink: Rework cdev-related notify API
On 12/15/23 20:02, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>
> The only actually used thermal netlink notification routine related
> to cooling devices is thermal_notify_cdev_state_update(). The other
> two, thermal_notify_cdev_add() and thermal_notify_cdev_delete(), are
> never used.
>
> So as to get rid of dead code, drop thermal_notify_cdev_add/delete(),
> which can be added back if they turn out to be ever needed, along with
> the related code.
>
> In analogy with the previous thermal netlink API changes, redefine
> thermal_notify_cdev_state_update() to take a const cdev pointer as its
> first argument and let it extract the requisite information from there
> by itself.
>
> No intentional functional impact.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> ---
> drivers/thermal/thermal_helpers.c | 2 -
> drivers/thermal/thermal_netlink.c | 43 ++------------------------------------
> drivers/thermal/thermal_netlink.h | 19 +++-------------
> 3 files changed, 8 insertions(+), 56 deletions(-)
>
> Index: linux-pm/drivers/thermal/thermal_netlink.h
> ===================================================================
> --- linux-pm.orig/drivers/thermal/thermal_netlink.h
> +++ linux-pm/drivers/thermal/thermal_netlink.h
> @@ -24,9 +24,8 @@ int thermal_notify_tz_trip_up(const stru
> const struct thermal_trip *trip);
> int thermal_notify_tz_trip_change(const struct thermal_zone_device *tz,
> const struct thermal_trip *trip);
> -int thermal_notify_cdev_state_update(int cdev_id, int state);
> -int thermal_notify_cdev_add(int cdev_id, const char *name, int max_state);
> -int thermal_notify_cdev_delete(int cdev_id);
> +int thermal_notify_cdev_state_update(const struct thermal_cooling_device *cdev,
> + int state);
> int thermal_notify_tz_gov_change(const struct thermal_zone_device *tz,
> const char *name);
> int thermal_genl_sampling_temp(int id, int temp);
> @@ -76,18 +75,8 @@ static inline int thermal_notify_tz_trip
> return 0;
> }
>
> -static inline int thermal_notify_cdev_state_update(int cdev_id, int state)
> -{
> - return 0;
> -}
> -
> -static inline int thermal_notify_cdev_add(int cdev_id, const char *name,
> - int max_state)
> -{
> - return 0;
> -}
> -
> -static inline int thermal_notify_cdev_delete(int cdev_id)
> +static inline int thermal_notify_cdev_state_update(const struct thermal_cooling_device *cdev,
> + int state)
> {
> return 0;
> }
> Index: linux-pm/drivers/thermal/thermal_helpers.c
> ===================================================================
> --- linux-pm.orig/drivers/thermal/thermal_helpers.c
> +++ linux-pm/drivers/thermal/thermal_helpers.c
> @@ -152,7 +152,7 @@ static void thermal_cdev_set_cur_state(s
> if (cdev->ops->set_cur_state(cdev, target))
> return;
>
> - thermal_notify_cdev_state_update(cdev->id, target);
> + thermal_notify_cdev_state_update(cdev, target);
> thermal_cooling_device_stats_update(cdev, target);
> }
>
> Index: linux-pm/drivers/thermal/thermal_netlink.c
> ===================================================================
> --- linux-pm.orig/drivers/thermal/thermal_netlink.c
> +++ linux-pm/drivers/thermal/thermal_netlink.c
> @@ -147,27 +147,6 @@ static int thermal_genl_event_tz_trip_ch
> return 0;
> }
>
> -static int thermal_genl_event_cdev_add(struct param *p)
> -{
> - if (nla_put_string(p->msg, THERMAL_GENL_ATTR_CDEV_NAME,
> - p->name) ||
> - nla_put_u32(p->msg, THERMAL_GENL_ATTR_CDEV_ID,
> - p->cdev_id) ||
> - nla_put_u32(p->msg, THERMAL_GENL_ATTR_CDEV_MAX_STATE,
> - p->cdev_max_state))
> - return -EMSGSIZE;
> -
> - return 0;
> -}
> -
> -static int thermal_genl_event_cdev_delete(struct param *p)
> -{
> - if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_CDEV_ID, p->cdev_id))
> - return -EMSGSIZE;
> -
> - return 0;
> -}
> -
> static int thermal_genl_event_cdev_state_update(struct param *p)
> {
> if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_CDEV_ID,
> @@ -244,8 +223,6 @@ static cb_t event_cb[] = {
> [THERMAL_GENL_EVENT_TZ_TRIP_UP] = thermal_genl_event_tz_trip_up,
> [THERMAL_GENL_EVENT_TZ_TRIP_DOWN] = thermal_genl_event_tz_trip_down,
> [THERMAL_GENL_EVENT_TZ_TRIP_CHANGE] = thermal_genl_event_tz_trip_change,
> - [THERMAL_GENL_EVENT_CDEV_ADD] = thermal_genl_event_cdev_add,
> - [THERMAL_GENL_EVENT_CDEV_DELETE] = thermal_genl_event_cdev_delete,
> [THERMAL_GENL_EVENT_CDEV_STATE_UPDATE] = thermal_genl_event_cdev_state_update,
> [THERMAL_GENL_EVENT_TZ_GOV_CHANGE] = thermal_genl_event_gov_change,
> [THERMAL_GENL_EVENT_CPU_CAPABILITY_CHANGE] = thermal_genl_event_cpu_capability_change,
> @@ -348,28 +325,14 @@ int thermal_notify_tz_trip_change(const
> return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_TRIP_CHANGE, &p);
> }
>
> -int thermal_notify_cdev_state_update(int cdev_id, int cdev_state)
> +int thermal_notify_cdev_state_update(const struct thermal_cooling_device *cdev,
> + int state)
> {
> - struct param p = { .cdev_id = cdev_id, .cdev_state = cdev_state };
> + struct param p = { .cdev_id = cdev->id, .cdev_state = state };
>
> return thermal_genl_send_event(THERMAL_GENL_EVENT_CDEV_STATE_UPDATE, &p);
> }
>
> -int thermal_notify_cdev_add(int cdev_id, const char *name, int cdev_max_state)
> -{
> - struct param p = { .cdev_id = cdev_id, .name = name,
> - .cdev_max_state = cdev_max_state };
> -
> - return thermal_genl_send_event(THERMAL_GENL_EVENT_CDEV_ADD, &p);
> -}
> -
> -int thermal_notify_cdev_delete(int cdev_id)
> -{
> - struct param p = { .cdev_id = cdev_id };
> -
> - return thermal_genl_send_event(THERMAL_GENL_EVENT_CDEV_DELETE, &p);
> -}
> -
> int thermal_notify_tz_gov_change(const struct thermal_zone_device *tz,
> const char *name)
> {
>
>
>
Reviewed-by: Lukasz Luba <lukasz.luba@....com>
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