diff mbox series

ACPI: Remove the unused find_acpi_cpu_cache_topology()

Message ID 20220629130644.1258904-1-sudeep.holla@arm.com (mailing list archive)
State Handled Elsewhere, archived
Headers show
Series ACPI: Remove the unused find_acpi_cpu_cache_topology() | expand

Commit Message

Sudeep Holla June 29, 2022, 1:06 p.m. UTC 
The sole user of this find_acpi_cpu_cache_topology() was arm64 topology
which is now consolidated into the generic arch_topology without the need
of this function.

Drop the unused function find_acpi_cpu_cache_topology().

Reported-by: Ionela Voinescu <ionela.voinescu@arm.com>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: linux-acpi@vger.kernel.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
---
 drivers/acpi/pptt.c  | 37 -------------------------------------
 include/linux/acpi.h |  5 -----
 2 files changed, 42 deletions(-)

Hi Rafael,

This is another patch that I would like to be part of the series[1].
Please ack the same if you are OK to route this via Greg. I am avoiding
to repost the whole series just for this one additional patch for now.

Regards,
Sudeep

[1] https://lore.kernel.org/all/20220627165047.336669-1-sudeep.holla@arm.com/

Comments

Rafael J. Wysocki June 29, 2022, 1:50 p.m. UTC | #1 
On Wed, Jun 29, 2022 at 3:07 PM Sudeep Holla <sudeep.holla@arm.com> wrote:
>
> The sole user of this find_acpi_cpu_cache_topology() was arm64 topology
> which is now consolidated into the generic arch_topology without the need
> of this function.
>
> Drop the unused function find_acpi_cpu_cache_topology().
>
> Reported-by: Ionela Voinescu <ionela.voinescu@arm.com>
> Cc: Rafael J. Wysocki <rafael@kernel.org>
> Cc: linux-acpi@vger.kernel.org
> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
> ---
>  drivers/acpi/pptt.c  | 37 -------------------------------------
>  include/linux/acpi.h |  5 -----
>  2 files changed, 42 deletions(-)
>
> Hi Rafael,
>
> This is another patch that I would like to be part of the series[1].
> Please ack the same if you are OK to route this via Greg. I am avoiding
> to repost the whole series just for this one additional patch for now.

Sure.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

> [1] https://lore.kernel.org/all/20220627165047.336669-1-sudeep.holla@arm.com/
>
> diff --git a/drivers/acpi/pptt.c b/drivers/acpi/pptt.c
> index 763f021d45e6..dd3222a15c9c 100644
> --- a/drivers/acpi/pptt.c
> +++ b/drivers/acpi/pptt.c
> @@ -691,43 +691,6 @@ int find_acpi_cpu_topology(unsigned int cpu, int level)
>         return find_acpi_cpu_topology_tag(cpu, level, 0);
>  }
>
> -/**
> - * find_acpi_cpu_cache_topology() - Determine a unique cache topology value
> - * @cpu: Kernel logical CPU number
> - * @level: The cache level for which we would like a unique ID
> - *
> - * Determine a unique ID for each unified cache in the system
> - *
> - * Return: -ENOENT if the PPTT doesn't exist, or the CPU cannot be found.
> - * Otherwise returns a value which represents a unique topological feature.
> - */
> -int find_acpi_cpu_cache_topology(unsigned int cpu, int level)
> -{
> -       struct acpi_table_header *table;
> -       struct acpi_pptt_cache *found_cache;
> -       acpi_status status;
> -       u32 acpi_cpu_id = get_acpi_id_for_cpu(cpu);
> -       struct acpi_pptt_processor *cpu_node = NULL;
> -       int ret = -1;
> -
> -       status = acpi_get_table(ACPI_SIG_PPTT, 0, &table);
> -       if (ACPI_FAILURE(status)) {
> -               acpi_pptt_warn_missing();
> -               return -ENOENT;
> -       }
> -
> -       found_cache = acpi_find_cache_node(table, acpi_cpu_id,
> -                                          CACHE_TYPE_UNIFIED,
> -                                          level,
> -                                          &cpu_node);
> -       if (found_cache)
> -               ret = ACPI_PTR_DIFF(cpu_node, table);
> -
> -       acpi_put_table(table);
> -
> -       return ret;
> -}
> -
>  /**
>   * find_acpi_cpu_topology_package() - Determine a unique CPU package value
>   * @cpu: Kernel logical CPU number
> diff --git a/include/linux/acpi.h b/include/linux/acpi.h
> index 4f82a5bc6d98..7b96a8bff6d2 100644
> --- a/include/linux/acpi.h
> +++ b/include/linux/acpi.h
> @@ -1429,7 +1429,6 @@ int find_acpi_cpu_topology(unsigned int cpu, int level);
>  int find_acpi_cpu_topology_cluster(unsigned int cpu);
>  int find_acpi_cpu_topology_package(unsigned int cpu);
>  int find_acpi_cpu_topology_hetero_id(unsigned int cpu);
> -int find_acpi_cpu_cache_topology(unsigned int cpu, int level);
>  #else
>  static inline int acpi_pptt_cpu_is_thread(unsigned int cpu)
>  {
> @@ -1451,10 +1450,6 @@ static inline int find_acpi_cpu_topology_hetero_id(unsigned int cpu)
>  {
>         return -EINVAL;
>  }
> -static inline int find_acpi_cpu_cache_topology(unsigned int cpu, int level)
> -{
> -       return -EINVAL;
> -}
>  #endif
>
>  #ifdef CONFIG_ACPI_PCC
> --
> 2.37.0
>
diff mbox series

Patch

diff --git a/drivers/acpi/pptt.c b/drivers/acpi/pptt.c
index 763f021d45e6..dd3222a15c9c 100644
--- a/drivers/acpi/pptt.c
+++ b/drivers/acpi/pptt.c
@@ -691,43 +691,6 @@  int find_acpi_cpu_topology(unsigned int cpu, int level)
 	return find_acpi_cpu_topology_tag(cpu, level, 0);
 }
 
-/**
- * find_acpi_cpu_cache_topology() - Determine a unique cache topology value
- * @cpu: Kernel logical CPU number
- * @level: The cache level for which we would like a unique ID
- *
- * Determine a unique ID for each unified cache in the system
- *
- * Return: -ENOENT if the PPTT doesn't exist, or the CPU cannot be found.
- * Otherwise returns a value which represents a unique topological feature.
- */
-int find_acpi_cpu_cache_topology(unsigned int cpu, int level)
-{
-	struct acpi_table_header *table;
-	struct acpi_pptt_cache *found_cache;
-	acpi_status status;
-	u32 acpi_cpu_id = get_acpi_id_for_cpu(cpu);
-	struct acpi_pptt_processor *cpu_node = NULL;
-	int ret = -1;
-
-	status = acpi_get_table(ACPI_SIG_PPTT, 0, &table);
-	if (ACPI_FAILURE(status)) {
-		acpi_pptt_warn_missing();
-		return -ENOENT;
-	}
-
-	found_cache = acpi_find_cache_node(table, acpi_cpu_id,
-					   CACHE_TYPE_UNIFIED,
-					   level,
-					   &cpu_node);
-	if (found_cache)
-		ret = ACPI_PTR_DIFF(cpu_node, table);
-
-	acpi_put_table(table);
-
-	return ret;
-}
-
 /**
  * find_acpi_cpu_topology_package() - Determine a unique CPU package value
  * @cpu: Kernel logical CPU number
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 4f82a5bc6d98..7b96a8bff6d2 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -1429,7 +1429,6 @@  int find_acpi_cpu_topology(unsigned int cpu, int level);
 int find_acpi_cpu_topology_cluster(unsigned int cpu);
 int find_acpi_cpu_topology_package(unsigned int cpu);
 int find_acpi_cpu_topology_hetero_id(unsigned int cpu);
-int find_acpi_cpu_cache_topology(unsigned int cpu, int level);
 #else
 static inline int acpi_pptt_cpu_is_thread(unsigned int cpu)
 {
@@ -1451,10 +1450,6 @@  static inline int find_acpi_cpu_topology_hetero_id(unsigned int cpu)
 {
 	return -EINVAL;
 }
-static inline int find_acpi_cpu_cache_topology(unsigned int cpu, int level)
-{
-	return -EINVAL;
-}
 #endif
 
 #ifdef CONFIG_ACPI_PCC