Commit caa07a81 authored by Changwoo Min's avatar Changwoo Min Committed by Rafael J. Wysocki
Browse files

PM: EM: Rename em.yaml to dev-energymodel.yaml 



The EM YNL specification used many acronyms, including ‘em’, ‘pd’,
‘ps’, etc. While the acronyms are short and convenient, they could be
confusing. So, let’s spell them out to be more specific. The following
changes were made in the spec. Note that the protocol name cannot exceed
GENL_NAMSIZ (16).

  em           -> dev-energymodel
  pds          -> perf-domains
  pd           -> perf-domain
  pd-id        -> perf-domain-id
  pd-table     -> perf-table
  ps           -> perf-state
  get-pds      -> get-perf-domains
  get-pd-table -> get-perf-table
  pd-created   -> perf-domain-created
  pd-updated   -> perf-domain-updated
  pd-deleted   -> perf-domain-deleted

In addition. doc strings were added to the spec. based on the comments in
energy_model.h. Two flag attributes (perf-state-flags and
perf-domain-flags) were added for easily interpreting the bit flags.

Finally, the autogenerated files and em_netlink.c were updated accordingly
to reflect the name changes.

Suggested-by: default avatarDonald Hunter <donald.hunter@gmail.com>
Reviewed-by: default avatarLukasz Luba <lukasz.luba@arm.com>
Reviewed-by: default avatarDonald Hunter <donald.hunter@gmail.com>
Signed-off-by: default avatarChangwoo Min <changwoo@igalia.com>
Link: https://patch.msgid.link/20260108053212.642478-3-changwoo@igalia.com


Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent ebabc32d

Documentation/netlink/specs/em.yaml→Documentation/netlink/specs/dev-energymodel.yaml

+175 −0
Original line number Diff line number Diff line
@@ -3,52 +3,98 @@ 
# Copyright (c) 2025 Valve Corporation.

#

---

name: em

name: dev-energymodel



doc: |

  Energy model netlink interface to notify its changes.



protocol: genetlink



uapi-header: linux/energy_model.h

uapi-header: linux/dev_energymodel.h



definitions:

  -

    type: flags

    name: perf-state-flags

    entries:

      -

        name: perf-state-inefficient

        doc: >-

          The performance state is inefficient. There is in this perf-domain,

          another performance state with a higher frequency but a lower or

          equal power cost.

  -

    type: flags

    name: perf-domain-flags

    entries:

      -

        name: perf-domain-microwatts

        doc: >-

          The power values are in micro-Watts or some other scale.

      -

        name: perf-domain-skip-inefficiencies

        doc: >-

          Skip inefficient states when estimating energy consumption.

      -

        name: perf-domain-artificial

        doc: >-

          The power values are artificial and might be created by platform

          missing real power information.



attribute-sets:

  -

    name: pds

    name: perf-domains

    doc: >-

      Information on all the performance domains.

    attributes:

      -

        name: pd

        name: perf-domain

        type: nest

        nested-attributes: pd

        nested-attributes: perf-domain

        multi-attr: true

  -

    name: pd

    name: perf-domain

    doc: >-

      Information on a single performance domains.

    attributes:

      -

        name: pad

        type: pad

      -

        name: pd-id

        name: perf-domain-id

        type: u32

        doc: >-

          A unique ID number for each performance domain.

      -

        name: flags

        type: u64

        doc: >-

          Bitmask of performance domain flags.

        enum: perf-domain-flags

      -

        name: cpus

        type: string

        doc: >-

          CPUs that belong to this performance domain.

  -

    name: pd-table

    name: perf-table

    doc: >-

      Performance states table.

    attributes:

      -

        name: pd-id

        name: perf-domain-id

        type: u32

        doc: >-

          A unique ID number for each performance domain.

      -

        name: ps

        name: perf-state

        type: nest

        nested-attributes: ps

        nested-attributes: perf-state

        multi-attr: true

  -

    name: ps

    name: perf-state

    doc: >-

      Performance state of a performance domain.

    attributes:

      -

        name: pad
@@ -56,58 +102,71 @@ attribute-sets: 
      -

        name: performance

        type: u64

        doc: >-

          CPU performance (capacity) at a given frequency.

      -

        name: frequency

        type: u64

        doc: >-

          The frequency in KHz, for consistency with CPUFreq.

      -

        name: power

        type: u64

        doc: >-

          The power consumed at this level (by 1 CPU or by a registered

          device). It can be a total power: static and dynamic.

      -

        name: cost

        type: u64

        doc: >-

          The cost coefficient associated with this level, used during energy

          calculation. Equal to: power * max_frequency / frequency.

      -

        name: flags

        type: u64

        doc: >-

          Bitmask of performance state flags.

        enum: perf-state-flags



operations:

  list:

    -

      name: get-pds

      attribute-set: pds

      name: get-perf-domains

      attribute-set: perf-domains

      doc: Get the list of information for all performance domains.

      do:

        reply:

          attributes:

            - pd

            - perf-domain

    -

      name: get-pd-table

      attribute-set: pd-table

      name: get-perf-table

      attribute-set: perf-table

      doc: Get the energy model table of a performance domain.

      do:

        request:

          attributes:

            - pd-id

            - perf-domain-id

        reply:

          attributes:

            - pd-id

            - ps

            - perf-domain-id

            - perf-state

    -

      name: pd-created

      name: perf-domain-created

      doc: A performance domain is created.

      notify: get-pd-table

      notify: get-perf-table

      mcgrp: event

    -

      name: pd-updated

      name: perf-domain-updated

      doc: A performance domain is updated.

      notify: get-pd-table

      notify: get-perf-table

      mcgrp: event

    -

      name: pd-deleted

      name: perf-domain-deleted

      doc: A performance domain is deleted.

      attribute-set: pd-table

      attribute-set: perf-table

      event:

        attributes:

          - pd-id

          - perf-domain-id

      mcgrp: event



mcast-groups:

MAINTAINERS

+4 −4
Original line number Diff line number Diff line
@@ -9298,12 +9298,12 @@ M: Lukasz Luba <lukasz.luba@arm.com> 
M:	"Rafael J. Wysocki" <rafael@kernel.org>

L:	linux-pm@vger.kernel.org

S:	Maintained

F:	kernel/power/energy_model.c

F:	include/linux/energy_model.h

F:	Documentation/netlink/specs/dev-energymodel.yaml

F:	Documentation/power/energy-model.rst

F:	Documentation/netlink/specs/em.yaml

F:	include/uapi/linux/energy_model.h

F:	include/linux/energy_model.h

F:	include/uapi/linux/dev_energymodel.h

F:	kernel/power/em_netlink*.*

F:	kernel/power/energy_model.c









EPAPR HYPERVISOR BYTE CHANNEL DEVICE DRIVER









M:	Laurentiu Tudor <laurentiu.tudor@nxp.com>
































include/uapi/linux/dev_energymodel.h
0 → 100644



+89
−0






























Original line number
Diff line number
Diff line









/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */









/* Do not edit directly, auto-generated from: */









/*	Documentation/netlink/specs/dev-energymodel.yaml */









/* YNL-GEN uapi header */









/* To regenerate run: tools/net/ynl/ynl-regen.sh */



















#ifndef _UAPI_LINUX_DEV_ENERGYMODEL_H









#define _UAPI_LINUX_DEV_ENERGYMODEL_H



















#define DEV_ENERGYMODEL_FAMILY_NAME	"dev-energymodel"









#define DEV_ENERGYMODEL_FAMILY_VERSION	1



















/**









 * enum dev_energymodel_perf_state_flags









 * @DEV_ENERGYMODEL_PERF_STATE_FLAGS_PERF_STATE_INEFFICIENT: The performance









 *   state is inefficient. There is in this perf-domain, another performance









 *   state with a higher frequency but a lower or equal power cost.









 */









enum dev_energymodel_perf_state_flags {









	DEV_ENERGYMODEL_PERF_STATE_FLAGS_PERF_STATE_INEFFICIENT = 1,









};



















/**









 * enum dev_energymodel_perf_domain_flags









 * @DEV_ENERGYMODEL_PERF_DOMAIN_FLAGS_PERF_DOMAIN_MICROWATTS: The power values









 *   are in micro-Watts or some other scale.









 * @DEV_ENERGYMODEL_PERF_DOMAIN_FLAGS_PERF_DOMAIN_SKIP_INEFFICIENCIES: Skip









 *   inefficient states when estimating energy consumption.









 * @DEV_ENERGYMODEL_PERF_DOMAIN_FLAGS_PERF_DOMAIN_ARTIFICIAL: The power values









 *   are artificial and might be created by platform missing real power









 *   information.









 */









enum dev_energymodel_perf_domain_flags {









	DEV_ENERGYMODEL_PERF_DOMAIN_FLAGS_PERF_DOMAIN_MICROWATTS = 1,









	DEV_ENERGYMODEL_PERF_DOMAIN_FLAGS_PERF_DOMAIN_SKIP_INEFFICIENCIES = 2,









	DEV_ENERGYMODEL_PERF_DOMAIN_FLAGS_PERF_DOMAIN_ARTIFICIAL = 4,









};



















enum {









	DEV_ENERGYMODEL_A_PERF_DOMAINS_PERF_DOMAIN = 1,



















	__DEV_ENERGYMODEL_A_PERF_DOMAINS_MAX,









	DEV_ENERGYMODEL_A_PERF_DOMAINS_MAX = (__DEV_ENERGYMODEL_A_PERF_DOMAINS_MAX - 1)









};



















enum {









	DEV_ENERGYMODEL_A_PERF_DOMAIN_PAD = 1,









	DEV_ENERGYMODEL_A_PERF_DOMAIN_PERF_DOMAIN_ID,









	DEV_ENERGYMODEL_A_PERF_DOMAIN_FLAGS,









	DEV_ENERGYMODEL_A_PERF_DOMAIN_CPUS,



















	__DEV_ENERGYMODEL_A_PERF_DOMAIN_MAX,









	DEV_ENERGYMODEL_A_PERF_DOMAIN_MAX = (__DEV_ENERGYMODEL_A_PERF_DOMAIN_MAX - 1)









};



















enum {









	DEV_ENERGYMODEL_A_PERF_TABLE_PERF_DOMAIN_ID = 1,









	DEV_ENERGYMODEL_A_PERF_TABLE_PERF_STATE,



















	__DEV_ENERGYMODEL_A_PERF_TABLE_MAX,









	DEV_ENERGYMODEL_A_PERF_TABLE_MAX = (__DEV_ENERGYMODEL_A_PERF_TABLE_MAX - 1)









};



















enum {









	DEV_ENERGYMODEL_A_PERF_STATE_PAD = 1,









	DEV_ENERGYMODEL_A_PERF_STATE_PERFORMANCE,









	DEV_ENERGYMODEL_A_PERF_STATE_FREQUENCY,









	DEV_ENERGYMODEL_A_PERF_STATE_POWER,









	DEV_ENERGYMODEL_A_PERF_STATE_COST,









	DEV_ENERGYMODEL_A_PERF_STATE_FLAGS,



















	__DEV_ENERGYMODEL_A_PERF_STATE_MAX,









	DEV_ENERGYMODEL_A_PERF_STATE_MAX = (__DEV_ENERGYMODEL_A_PERF_STATE_MAX - 1)









};



















enum {









	DEV_ENERGYMODEL_CMD_GET_PERF_DOMAINS = 1,









	DEV_ENERGYMODEL_CMD_GET_PERF_TABLE,









	DEV_ENERGYMODEL_CMD_PERF_DOMAIN_CREATED,









	DEV_ENERGYMODEL_CMD_PERF_DOMAIN_UPDATED,









	DEV_ENERGYMODEL_CMD_PERF_DOMAIN_DELETED,



















	__DEV_ENERGYMODEL_CMD_MAX,









	DEV_ENERGYMODEL_CMD_MAX = (__DEV_ENERGYMODEL_CMD_MAX - 1)









};



















#define DEV_ENERGYMODEL_MCGRP_EVENT	"event"



















#endif /* _UAPI_LINUX_DEV_ENERGYMODEL_H */
























include/uapi/linux/energy_model.h
deleted100644 → 0



+0
−63






























Original line number
Diff line number
Diff line









/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */









/* Do not edit directly, auto-generated from: */









/*	Documentation/netlink/specs/em.yaml */









/* YNL-GEN uapi header */









/* To regenerate run: tools/net/ynl/ynl-regen.sh */



















#ifndef _UAPI_LINUX_ENERGY_MODEL_H









#define _UAPI_LINUX_ENERGY_MODEL_H



















#define EM_FAMILY_NAME		"em"









#define EM_FAMILY_VERSION	1



















enum {









	EM_A_PDS_PD = 1,



















	__EM_A_PDS_MAX,









	EM_A_PDS_MAX = (__EM_A_PDS_MAX - 1)









};



















enum {









	EM_A_PD_PAD = 1,









	EM_A_PD_PD_ID,









	EM_A_PD_FLAGS,









	EM_A_PD_CPUS,



















	__EM_A_PD_MAX,









	EM_A_PD_MAX = (__EM_A_PD_MAX - 1)









};



















enum {









	EM_A_PD_TABLE_PD_ID = 1,









	EM_A_PD_TABLE_PS,



















	__EM_A_PD_TABLE_MAX,









	EM_A_PD_TABLE_MAX = (__EM_A_PD_TABLE_MAX - 1)









};



















enum {









	EM_A_PS_PAD = 1,









	EM_A_PS_PERFORMANCE,









	EM_A_PS_FREQUENCY,









	EM_A_PS_POWER,









	EM_A_PS_COST,









	EM_A_PS_FLAGS,



















	__EM_A_PS_MAX,









	EM_A_PS_MAX = (__EM_A_PS_MAX - 1)









};



















enum {









	EM_CMD_GET_PDS = 1,









	EM_CMD_GET_PD_TABLE,









	EM_CMD_PD_CREATED,









	EM_CMD_PD_UPDATED,









	EM_CMD_PD_DELETED,



















	__EM_CMD_MAX,









	EM_CMD_MAX = (__EM_CMD_MAX - 1)









};



















#define EM_MCGRP_EVENT	"event"



















#endif /* _UAPI_LINUX_ENERGY_MODEL_H */
























kernel/power/em_netlink.c



+83
−52






























Original line number
Diff line number
Diff line







@@ -12,27 +12,31 @@







#include <linux/energy_model.h>









#include <net/sock.h>









#include <net/genetlink.h>









#include <uapi/linux/energy_model.h>









#include <uapi/linux/dev_energymodel.h>



















#include "em_netlink.h"









#include "em_netlink_autogen.h"



















#define EM_A_PD_CPUS_LEN		256









#define DEV_ENERGYMODEL_A_PERF_DOMAIN_CPUS_LEN		256



















/*************************** Command encoding ********************************/









static int __em_nl_get_pd_size(struct em_perf_domain *pd, void *data)









{









	char cpus_buf[EM_A_PD_CPUS_LEN];









	char cpus_buf[DEV_ENERGYMODEL_A_PERF_DOMAIN_CPUS_LEN];









	int *tot_msg_sz = data;









	int msg_sz, cpus_sz;



















	cpus_sz = snprintf(cpus_buf, sizeof(cpus_buf), "%*pb",









			   cpumask_pr_args(to_cpumask(pd->cpus)));



















	msg_sz = nla_total_size(0) +			/* EM_A_PDS_PD */









		 nla_total_size(sizeof(u32)) +		/* EM_A_PD_PD_ID */









		 nla_total_size_64bit(sizeof(u64)) +	/* EM_A_PD_FLAGS */









		 nla_total_size(cpus_sz);		/* EM_A_PD_CPUS */









	msg_sz = nla_total_size(0) +









		 /* DEV_ENERGYMODEL_A_PERF_DOMAINS_PERF_DOMAIN */









		 nla_total_size(sizeof(u32)) +









		 /* DEV_ENERGYMODEL_A_PERF_DOMAIN_PERF_DOMAIN_ID */









		 nla_total_size_64bit(sizeof(u64)) +









		 /* DEV_ENERGYMODEL_A_PERF_DOMAIN_FLAGS */









		 nla_total_size(cpus_sz);









		 /* DEV_ENERGYMODEL_A_PERF_DOMAIN_CPUS */



















	*tot_msg_sz += nlmsg_total_size(genlmsg_msg_size(msg_sz));









	return 0;








@@ -40,23 +44,26 @@ static int __em_nl_get_pd_size(struct em_perf_domain *pd, void *data)

















static int __em_nl_get_pd(struct em_perf_domain *pd, void *data)









{









	char cpus_buf[EM_A_PD_CPUS_LEN];









	char cpus_buf[DEV_ENERGYMODEL_A_PERF_DOMAIN_CPUS_LEN];









	struct sk_buff *msg = data;









	struct nlattr *entry;



















	entry = nla_nest_start(msg, EM_A_PDS_PD);









	entry = nla_nest_start(msg,









			       DEV_ENERGYMODEL_A_PERF_DOMAINS_PERF_DOMAIN);









	if (!entry)









		goto out_cancel_nest;



















	if (nla_put_u32(msg, EM_A_PD_PD_ID, pd->id))









	if (nla_put_u32(msg, DEV_ENERGYMODEL_A_PERF_DOMAIN_PERF_DOMAIN_ID,









			pd->id))









		goto out_cancel_nest;



















	if (nla_put_u64_64bit(msg, EM_A_PD_FLAGS, pd->flags, EM_A_PD_PAD))









	if (nla_put_u64_64bit(msg, DEV_ENERGYMODEL_A_PERF_DOMAIN_FLAGS,









			      pd->flags, DEV_ENERGYMODEL_A_PERF_DOMAIN_PAD))









		goto out_cancel_nest;



















	snprintf(cpus_buf, sizeof(cpus_buf), "%*pb",









		 cpumask_pr_args(to_cpumask(pd->cpus)));









	if (nla_put_string(msg, EM_A_PD_CPUS, cpus_buf))









	if (nla_put_string(msg, DEV_ENERGYMODEL_A_PERF_DOMAIN_CPUS, cpus_buf))









		goto out_cancel_nest;



















	nla_nest_end(msg, entry);








@@ -69,7 +76,8 @@ static int __em_nl_get_pd(struct em_perf_domain *pd, void *data)







	return -EMSGSIZE;









}



















int em_nl_get_pds_doit(struct sk_buff *skb, struct genl_info *info)









int dev_energymodel_nl_get_perf_domains_doit(struct sk_buff *skb,









					      struct genl_info *info)









{









	struct sk_buff *msg;









	void *hdr;








@@ -82,7 +90,7 @@ int em_nl_get_pds_doit(struct sk_buff *skb, struct genl_info *info)







	if (!msg)









		return -ENOMEM;



















	hdr = genlmsg_put_reply(msg, info, &em_nl_family, 0, cmd);









	hdr = genlmsg_put_reply(msg, info, &dev_energymodel_nl_family, 0, cmd);









	if (!hdr)









		goto out_free_msg;


















@@ -107,10 +115,10 @@ static struct em_perf_domain *__em_nl_get_pd_table_id(struct nlattr **attrs)







	struct em_perf_domain *pd;









	int id;



















	if (!attrs[EM_A_PD_TABLE_PD_ID])









	if (!attrs[DEV_ENERGYMODEL_A_PERF_TABLE_PERF_DOMAIN_ID])









		return NULL;



















	id = nla_get_u32(attrs[EM_A_PD_TABLE_PD_ID]);









	id = nla_get_u32(attrs[DEV_ENERGYMODEL_A_PERF_TABLE_PERF_DOMAIN_ID]);









	pd = em_perf_domain_get_by_id(id);









	return pd;









}








@@ -119,25 +127,34 @@ static int __em_nl_get_pd_table_size(const struct em_perf_domain *pd)







{









	int id_sz, ps_sz;



















	id_sz = nla_total_size(sizeof(u32));		/* EM_A_PD_TABLE_PD_ID */









	ps_sz = nla_total_size(0) +			/* EM_A_PD_TABLE_PS */









		nla_total_size_64bit(sizeof(u64)) +	/* EM_A_PS_PERFORMANCE */









		nla_total_size_64bit(sizeof(u64)) +	/* EM_A_PS_FREQUENCY */









		nla_total_size_64bit(sizeof(u64)) +	/* EM_A_PS_POWER */









		nla_total_size_64bit(sizeof(u64)) +	/* EM_A_PS_COST */









		nla_total_size_64bit(sizeof(u64));	/* EM_A_PS_FLAGS */









	id_sz = nla_total_size(sizeof(u32));









		/* DEV_ENERGYMODEL_A_PERF_TABLE_PERF_DOMAIN_ID */









	ps_sz = nla_total_size(0) +









		/* DEV_ENERGYMODEL_A_PERF_TABLE_PERF_STATE */









		nla_total_size_64bit(sizeof(u64)) +









		/* DEV_ENERGYMODEL_A_PERF_STATE_PERFORMANCE */









		nla_total_size_64bit(sizeof(u64)) +









		/* DEV_ENERGYMODEL_A_PERF_STATE_FREQUENCY */









		nla_total_size_64bit(sizeof(u64)) +









		/* DEV_ENERGYMODEL_A_PERF_STATE_POWER */









		nla_total_size_64bit(sizeof(u64)) +









		/* DEV_ENERGYMODEL_A_PERF_STATE_COST */









		nla_total_size_64bit(sizeof(u64));









		/* DEV_ENERGYMODEL_A_PERF_STATE_FLAGS */









	ps_sz *= pd->nr_perf_states;



















	return nlmsg_total_size(genlmsg_msg_size(id_sz + ps_sz));









}



















static int __em_nl_get_pd_table(struct sk_buff *msg, const struct em_perf_domain *pd)









static









int __em_nl_get_pd_table(struct sk_buff *msg, const struct em_perf_domain *pd)









{









	struct em_perf_state *table, *ps;









	struct nlattr *entry;









	int i;



















	if (nla_put_u32(msg, EM_A_PD_TABLE_PD_ID, pd->id))









	if (nla_put_u32(msg, DEV_ENERGYMODEL_A_PERF_TABLE_PERF_DOMAIN_ID,









			pd->id))









		goto out_err;



















	rcu_read_lock();








@@ -146,24 +163,35 @@ static int __em_nl_get_pd_table(struct sk_buff *msg, const struct em_perf_domain







	for (i = 0; i < pd->nr_perf_states; i++) {









		ps = &table[i];



















		entry = nla_nest_start(msg, EM_A_PD_TABLE_PS);









		entry = nla_nest_start(msg,









				       DEV_ENERGYMODEL_A_PERF_TABLE_PERF_STATE);









		if (!entry)









			goto out_unlock_ps;



















		if (nla_put_u64_64bit(msg, EM_A_PS_PERFORMANCE,









				      ps->performance, EM_A_PS_PAD))









		if (nla_put_u64_64bit(msg,









				      DEV_ENERGYMODEL_A_PERF_STATE_PERFORMANCE,









				      ps->performance,









				      DEV_ENERGYMODEL_A_PERF_STATE_PAD))









			goto out_cancel_ps_nest;









		if (nla_put_u64_64bit(msg, EM_A_PS_FREQUENCY,









				      ps->frequency, EM_A_PS_PAD))









		if (nla_put_u64_64bit(msg,









				      DEV_ENERGYMODEL_A_PERF_STATE_FREQUENCY,









				      ps->frequency,









				      DEV_ENERGYMODEL_A_PERF_STATE_PAD))









			goto out_cancel_ps_nest;









		if (nla_put_u64_64bit(msg, EM_A_PS_POWER,









				      ps->power, EM_A_PS_PAD))









		if (nla_put_u64_64bit(msg,









				      DEV_ENERGYMODEL_A_PERF_STATE_POWER,









				      ps->power,









				      DEV_ENERGYMODEL_A_PERF_STATE_PAD))









			goto out_cancel_ps_nest;









		if (nla_put_u64_64bit(msg, EM_A_PS_COST,









				      ps->cost, EM_A_PS_PAD))









		if (nla_put_u64_64bit(msg,









				      DEV_ENERGYMODEL_A_PERF_STATE_COST,









				      ps->cost,









				      DEV_ENERGYMODEL_A_PERF_STATE_PAD))









			goto out_cancel_ps_nest;









		if (nla_put_u64_64bit(msg, EM_A_PS_FLAGS,









				      ps->flags, EM_A_PS_PAD))









		if (nla_put_u64_64bit(msg,









				      DEV_ENERGYMODEL_A_PERF_STATE_FLAGS,









				      ps->flags,









				      DEV_ENERGYMODEL_A_PERF_STATE_PAD))









			goto out_cancel_ps_nest;



















		nla_nest_end(msg, entry);








@@ -179,7 +207,8 @@ static int __em_nl_get_pd_table(struct sk_buff *msg, const struct em_perf_domain







	return -EMSGSIZE;









}



















int em_nl_get_pd_table_doit(struct sk_buff *skb, struct genl_info *info)









int dev_energymodel_nl_get_perf_table_doit(struct sk_buff *skb,









					    struct genl_info *info)









{









	int cmd = info->genlhdr->cmd;









	int msg_sz, ret = -EMSGSIZE;








@@ -197,7 +226,7 @@ int em_nl_get_pd_table_doit(struct sk_buff *skb, struct genl_info *info)







	if (!msg)









		return -ENOMEM;



















	hdr = genlmsg_put_reply(msg, info, &em_nl_family, 0, cmd);









	hdr = genlmsg_put_reply(msg, info, &dev_energymodel_nl_family, 0, cmd);









	if (!hdr)









		goto out_free_msg;


















@@ -221,7 +250,7 @@ static void __em_notify_pd_table(const struct em_perf_domain *pd, int ntf_type)







	int msg_sz, ret = -EMSGSIZE;









	void *hdr;



















	if (!genl_has_listeners(&em_nl_family, &init_net, EM_NLGRP_EVENT))









	if (!genl_has_listeners(&dev_energymodel_nl_family, &init_net, DEV_ENERGYMODEL_NLGRP_EVENT))









		return;



















	msg_sz = __em_nl_get_pd_table_size(pd);








@@ -230,7 +259,7 @@ static void __em_notify_pd_table(const struct em_perf_domain *pd, int ntf_type)







	if (!msg)









		return;



















	hdr = genlmsg_put(msg, 0, 0, &em_nl_family, 0, ntf_type);









	hdr = genlmsg_put(msg, 0, 0, &dev_energymodel_nl_family, 0, ntf_type);









	if (!hdr)









		goto out_free_msg;


















@@ -240,28 +269,28 @@ static void __em_notify_pd_table(const struct em_perf_domain *pd, int ntf_type)

















	genlmsg_end(msg, hdr);



















	genlmsg_multicast(&em_nl_family, msg, 0, EM_NLGRP_EVENT, GFP_KERNEL);









	genlmsg_multicast(&dev_energymodel_nl_family, msg, 0,









			  DEV_ENERGYMODEL_NLGRP_EVENT, GFP_KERNEL);



















	return;



















out_free_msg:









	nlmsg_free(msg);









	return;









}



















void em_notify_pd_created(const struct em_perf_domain *pd)









{









	__em_notify_pd_table(pd, EM_CMD_PD_CREATED);









	__em_notify_pd_table(pd, DEV_ENERGYMODEL_CMD_PERF_DOMAIN_CREATED);









}



















void em_notify_pd_updated(const struct em_perf_domain *pd)









{









	__em_notify_pd_table(pd, EM_CMD_PD_UPDATED);









	__em_notify_pd_table(pd, DEV_ENERGYMODEL_CMD_PERF_DOMAIN_UPDATED);









}



















static int __em_notify_pd_deleted_size(const struct em_perf_domain *pd)









{









	int id_sz = nla_total_size(sizeof(u32)); /* EM_A_PD_TABLE_PD_ID */









	int id_sz = nla_total_size(sizeof(u32)); /* DEV_ENERGYMODEL_A_PERF_TABLE_PERF_DOMAIN_ID */



















	return nlmsg_total_size(genlmsg_msg_size(id_sz));









}








@@ -272,7 +301,8 @@ void em_notify_pd_deleted(const struct em_perf_domain *pd)







	void *hdr;









	int msg_sz;



















	if (!genl_has_listeners(&em_nl_family, &init_net, EM_NLGRP_EVENT))









	if (!genl_has_listeners(&dev_energymodel_nl_family, &init_net,









				DEV_ENERGYMODEL_NLGRP_EVENT))









		return;



















	msg_sz = __em_notify_pd_deleted_size(pd);








@@ -281,28 +311,29 @@ void em_notify_pd_deleted(const struct em_perf_domain *pd)







	if (!msg)









		return;



















	hdr = genlmsg_put(msg, 0, 0, &em_nl_family, 0, EM_CMD_PD_DELETED);









	hdr = genlmsg_put(msg, 0, 0, &dev_energymodel_nl_family, 0,









			  DEV_ENERGYMODEL_CMD_PERF_DOMAIN_DELETED);









	if (!hdr)









		goto out_free_msg;



















	if (nla_put_u32(msg, EM_A_PD_TABLE_PD_ID, pd->id)) {









	if (nla_put_u32(msg, DEV_ENERGYMODEL_A_PERF_TABLE_PERF_DOMAIN_ID,









			pd->id))









		goto out_free_msg;









	}



















	genlmsg_end(msg, hdr);



















	genlmsg_multicast(&em_nl_family, msg, 0, EM_NLGRP_EVENT, GFP_KERNEL);









	genlmsg_multicast(&dev_energymodel_nl_family, msg, 0,









			  DEV_ENERGYMODEL_NLGRP_EVENT, GFP_KERNEL);



















	return;



















out_free_msg:









	nlmsg_free(msg);









	return;









}



















/**************************** Initialization *********************************/









static int __init em_netlink_init(void)









{









	return genl_register_family(&em_nl_family);









	return genl_register_family(&dev_energymodel_nl_family);









}









postcore_initcall(em_netlink_init);