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From: Sudeep Holla <sudeep.holla@arm.com>
To: linux-kernel@vger.kernel.org
Cc: Sudeep Holla <sudeep.holla@arm.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Atish Patra <atishp@atishpatra.org>,
	Atish Patra <atishp@rivosinc.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Qing Wang <wangqing@vivo.com>, Rob Herring <robh+dt@kernel.org>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Ionela Voinescu <ionela.voinescu@arm.com>,
	Pierre Gondois <pierre.gondois@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-riscv@lists.infradead.org
Subject: [PATCH v5 15/19] arch_topology: Don't set cluster identifier as physical package identifier
Date: Mon, 27 Jun 2022 17:50:43 +0100	[thread overview]
Message-ID: <20220627165047.336669-16-sudeep.holla@arm.com> (raw)
In-Reply-To: <20220627165047.336669-1-sudeep.holla@arm.com>

Currently as we parse the CPU topology from /cpu-map node from the
device tree, we assign generated cluster count as the physical package
identifier for each CPU which is wrong.

The device tree bindings for CPU topology supports sockets to infer
the socket or physical package identifier for a given CPU. Since it is
fairly new and not supported on most of the old and existing systems, we
can assume all such systems have single socket/physical package.

Fix the physical package identifier to 0 by removing the assignment of
cluster identifier to the same.

Link: https://lore.kernel.org/r/20220621192034.3332546-16-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
---
 drivers/base/arch_topology.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 7a569aefe313..46fa1b70b02b 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -549,7 +549,6 @@ static int __init parse_cluster(struct device_node *cluster, int depth)
 	bool leaf = true;
 	bool has_cores = false;
 	struct device_node *c;
-	static int package_id __initdata;
 	int core_id = 0;
 	int i, ret;
 
@@ -588,7 +587,7 @@ static int __init parse_cluster(struct device_node *cluster, int depth)
 			}
 
 			if (leaf) {
-				ret = parse_core(c, package_id, core_id++);
+				ret = parse_core(c, 0, core_id++);
 			} else {
 				pr_err("%pOF: Non-leaf cluster with core %s\n",
 				       cluster, name);
@@ -605,9 +604,6 @@ static int __init parse_cluster(struct device_node *cluster, int depth)
 	if (leaf && !has_cores)
 		pr_warn("%pOF: empty cluster\n", cluster);
 
-	if (leaf)
-		package_id++;
-
 	return 0;
 }
 
-- 
2.36.1


WARNING: multiple messages have this Message-ID (diff)
From: Sudeep Holla <sudeep.holla@arm.com>
To: linux-kernel@vger.kernel.org
Cc: Sudeep Holla <sudeep.holla@arm.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Atish Patra <atishp@atishpatra.org>,
	Atish Patra <atishp@rivosinc.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Qing Wang <wangqing@vivo.com>, Rob Herring <robh+dt@kernel.org>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Ionela Voinescu <ionela.voinescu@arm.com>,
	Pierre Gondois <pierre.gondois@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-riscv@lists.infradead.org
Subject: [PATCH v5 15/19] arch_topology: Don't set cluster identifier as physical package identifier
Date: Mon, 27 Jun 2022 17:50:43 +0100	[thread overview]
Message-ID: <20220627165047.336669-16-sudeep.holla@arm.com> (raw)
In-Reply-To: <20220627165047.336669-1-sudeep.holla@arm.com>

Currently as we parse the CPU topology from /cpu-map node from the
device tree, we assign generated cluster count as the physical package
identifier for each CPU which is wrong.

The device tree bindings for CPU topology supports sockets to infer
the socket or physical package identifier for a given CPU. Since it is
fairly new and not supported on most of the old and existing systems, we
can assume all such systems have single socket/physical package.

Fix the physical package identifier to 0 by removing the assignment of
cluster identifier to the same.

Link: https://lore.kernel.org/r/20220621192034.3332546-16-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
---
 drivers/base/arch_topology.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 7a569aefe313..46fa1b70b02b 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -549,7 +549,6 @@ static int __init parse_cluster(struct device_node *cluster, int depth)
 	bool leaf = true;
 	bool has_cores = false;
 	struct device_node *c;
-	static int package_id __initdata;
 	int core_id = 0;
 	int i, ret;
 
@@ -588,7 +587,7 @@ static int __init parse_cluster(struct device_node *cluster, int depth)
 			}
 
 			if (leaf) {
-				ret = parse_core(c, package_id, core_id++);
+				ret = parse_core(c, 0, core_id++);
 			} else {
 				pr_err("%pOF: Non-leaf cluster with core %s\n",
 				       cluster, name);
@@ -605,9 +604,6 @@ static int __init parse_cluster(struct device_node *cluster, int depth)
 	if (leaf && !has_cores)
 		pr_warn("%pOF: empty cluster\n", cluster);
 
-	if (leaf)
-		package_id++;
-
 	return 0;
 }
 
-- 
2.36.1


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

WARNING: multiple messages have this Message-ID (diff)
From: Sudeep Holla <sudeep.holla@arm.com>
To: linux-kernel@vger.kernel.org
Cc: Sudeep Holla <sudeep.holla@arm.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Atish Patra <atishp@atishpatra.org>,
	Atish Patra <atishp@rivosinc.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Qing Wang <wangqing@vivo.com>, Rob Herring <robh+dt@kernel.org>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Ionela Voinescu <ionela.voinescu@arm.com>,
	Pierre Gondois <pierre.gondois@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-riscv@lists.infradead.org
Subject: [PATCH v5 15/19] arch_topology: Don't set cluster identifier as physical package identifier
Date: Mon, 27 Jun 2022 17:50:43 +0100	[thread overview]
Message-ID: <20220627165047.336669-16-sudeep.holla@arm.com> (raw)
In-Reply-To: <20220627165047.336669-1-sudeep.holla@arm.com>

Currently as we parse the CPU topology from /cpu-map node from the
device tree, we assign generated cluster count as the physical package
identifier for each CPU which is wrong.

The device tree bindings for CPU topology supports sockets to infer
the socket or physical package identifier for a given CPU. Since it is
fairly new and not supported on most of the old and existing systems, we
can assume all such systems have single socket/physical package.

Fix the physical package identifier to 0 by removing the assignment of
cluster identifier to the same.

Link: https://lore.kernel.org/r/20220621192034.3332546-16-sudeep.holla@arm.com
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
---
 drivers/base/arch_topology.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 7a569aefe313..46fa1b70b02b 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -549,7 +549,6 @@ static int __init parse_cluster(struct device_node *cluster, int depth)
 	bool leaf = true;
 	bool has_cores = false;
 	struct device_node *c;
-	static int package_id __initdata;
 	int core_id = 0;
 	int i, ret;
 
@@ -588,7 +587,7 @@ static int __init parse_cluster(struct device_node *cluster, int depth)
 			}
 
 			if (leaf) {
-				ret = parse_core(c, package_id, core_id++);
+				ret = parse_core(c, 0, core_id++);
 			} else {
 				pr_err("%pOF: Non-leaf cluster with core %s\n",
 				       cluster, name);
@@ -605,9 +604,6 @@ static int __init parse_cluster(struct device_node *cluster, int depth)
 	if (leaf && !has_cores)
 		pr_warn("%pOF: empty cluster\n", cluster);
 
-	if (leaf)
-		package_id++;
-
 	return 0;
 }
 
-- 
2.36.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2022-06-27 16:52 UTC|newest]

Thread overview: 144+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-27 16:50 [PATCH v5 00/19] arch_topology: Updates to add socket support and fix cluster ids Sudeep Holla
2022-06-27 16:50 ` Sudeep Holla
2022-06-27 16:50 ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 01/19] ACPI: PPTT: Use table offset as fw_token instead of virtual address Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 02/19] cacheinfo: Use of_cpu_device_node_get instead cpu_dev->of_node Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 03/19] cacheinfo: Add helper to access any cache index for a given CPU Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 04/19] cacheinfo: Move cache_leaves_are_shared out of CONFIG_OF Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 05/19] cacheinfo: Add support to check if last level cache(LLC) is valid or shared Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 06/19] cacheinfo: Allow early detection and population of cache attributes Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 07/19] cacheinfo: Use cache identifiers to check if the caches are shared if available Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 08/19] arch_topology: Add support to parse and detect cache attributes Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 09/19] arch_topology: Use the last level cache information from the cacheinfo Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-29 17:49   ` Conor.Dooley
2022-06-29 17:49     ` Conor.Dooley
2022-06-29 17:49     ` Conor.Dooley
2022-06-29 18:18     ` Conor.Dooley
2022-06-29 18:18       ` Conor.Dooley
2022-06-29 18:18       ` Conor.Dooley
2022-06-29 18:33       ` Sudeep Holla
2022-06-29 18:33         ` Sudeep Holla
2022-06-29 18:33         ` Sudeep Holla
2022-06-29 18:42       ` Sudeep Holla
2022-06-29 18:42         ` Sudeep Holla
2022-06-29 18:42         ` Sudeep Holla
2022-06-29 19:39         ` Conor.Dooley
2022-06-29 19:39           ` Conor.Dooley
2022-06-29 19:39           ` Conor.Dooley
2022-06-29 19:54           ` Sudeep Holla
2022-06-29 19:54             ` Sudeep Holla
2022-06-29 19:54             ` Sudeep Holla
2022-06-29 20:32             ` Conor.Dooley
2022-06-29 20:32               ` Conor.Dooley
2022-06-29 20:32               ` Conor.Dooley
2022-06-29 23:25               ` Conor.Dooley
2022-06-29 23:25                 ` Conor.Dooley
2022-06-29 23:25                 ` Conor.Dooley
2022-06-30 10:39                 ` Sudeep Holla
2022-06-30 10:39                   ` Sudeep Holla
2022-06-30 10:39                   ` Sudeep Holla
2022-06-30 16:37                   ` Conor.Dooley
2022-06-30 16:37                     ` Conor.Dooley
2022-06-30 16:37                     ` Conor.Dooley
2022-06-30 17:35                     ` Sudeep Holla
2022-06-30 17:35                       ` Sudeep Holla
2022-06-30 17:35                       ` Sudeep Holla
2022-06-30 19:20                       ` Conor.Dooley
2022-06-30 19:20                         ` Conor.Dooley
2022-06-30 19:20                         ` Conor.Dooley
2022-06-30 20:07                         ` Sudeep Holla
2022-06-30 20:07                           ` Sudeep Holla
2022-06-30 20:07                           ` Sudeep Holla
2022-06-30 20:13                           ` Conor.Dooley
2022-06-30 20:13                             ` Conor.Dooley
2022-06-30 20:13                             ` Conor.Dooley
2022-06-30 20:21                             ` Sudeep Holla
2022-06-30 20:21                               ` Sudeep Holla
2022-06-30 20:21                               ` Sudeep Holla
2022-06-30 22:07                               ` Conor.Dooley
2022-06-30 22:07                                 ` Conor.Dooley
2022-06-30 22:07                                 ` Conor.Dooley
2022-07-01 11:11                                 ` Sudeep Holla
2022-07-01 11:11                                   ` Sudeep Holla
2022-07-01 11:11                                   ` Sudeep Holla
2022-07-01 14:47                                   ` Conor.Dooley
2022-07-01 14:47                                     ` Conor.Dooley
2022-07-01 14:47                                     ` Conor.Dooley
2022-06-29 18:47       ` Sudeep Holla
2022-06-29 18:47         ` Sudeep Holla
2022-06-29 18:47         ` Sudeep Holla
2022-06-29 18:56         ` Conor.Dooley
2022-06-29 18:56           ` Conor.Dooley
2022-06-29 18:56           ` Conor.Dooley
2022-06-29 19:12           ` Sudeep Holla
2022-06-29 19:12             ` Sudeep Holla
2022-06-29 19:12             ` Sudeep Holla
2022-06-29 19:25             ` Conor.Dooley
2022-06-29 19:25               ` Conor.Dooley
2022-06-29 19:25               ` Conor.Dooley
2022-06-29 19:43               ` Sudeep Holla
2022-06-29 19:43                 ` Sudeep Holla
2022-06-29 19:43                 ` Sudeep Holla
2022-06-29 19:52                 ` Conor.Dooley
2022-06-29 19:52                   ` Conor.Dooley
2022-06-29 19:52                   ` Conor.Dooley
2022-06-29 18:29     ` Sudeep Holla
2022-06-29 18:29       ` Sudeep Holla
2022-06-29 18:29       ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 10/19] arm64: topology: Remove redundant setting of llc_id in CPU topology Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 11/19] arch_topology: Drop LLC identifier stash from the " Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 12/19] arch_topology: Set thread sibling cpumask only within the cluster Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 13/19] arch_topology: Check for non-negative value rather than -1 for IDs validity Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 14/19] arch_topology: Avoid parsing through all the CPUs once a outlier CPU is found Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` Sudeep Holla [this message]
2022-06-27 16:50   ` [PATCH v5 15/19] arch_topology: Don't set cluster identifier as physical package identifier Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 16/19] arch_topology: Limit span of cpu_clustergroup_mask() Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-28 10:28   ` Vincent Guittot
2022-06-28 10:28     ` Vincent Guittot
2022-06-28 10:28     ` Vincent Guittot
2022-06-27 16:50 ` [PATCH v5 17/19] arch_topology: Set cluster identifier in each core/thread from /cpu-map Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 18/19] arch_topology: Add support for parsing sockets in /cpu-map Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 19/19] arch_topology: Warn that topology for nested clusters is not supported Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-27 16:50   ` Sudeep Holla
2022-06-29 13:06 ` [PATCH] ACPI: Remove the unused find_acpi_cpu_cache_topology() Sudeep Holla
2022-06-29 13:06   ` Sudeep Holla
2022-06-29 13:06   ` Sudeep Holla
2022-06-29 13:50   ` Rafael J. Wysocki
2022-06-29 13:50     ` Rafael J. Wysocki
2022-06-29 13:50     ` Rafael J. Wysocki

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