diff mbox series

[v3,7/8] mm/memory_hotplug: convert memhp_auto_online to store an online_type

Message ID 20200319131221.14044-8-david@redhat.com (mailing list archive)
State Not Applicable
Headers show
Series [v3,1/8] drivers/base/memory: rename MMOP_ONLINE_KEEP to MMOP_ONLINE | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/merge (8a445cbcb9f5090cb07ec6cbb89a8a1fc99a0ff7)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/next (59ed2adf393109c56d383e568f2e57bb5ad6d901)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linus/master (5076190daded2197f62fe92cf69674488be44175)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/fixes (af3d0a68698c7e5df8b72267086b23422a3954bb)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linux-next (aff7e57f8266549245eb4a272ce149b752dfce77)
snowpatch_ozlabs/apply_patch fail Failed to apply to any branch

Commit Message

David Hildenbrand March 19, 2020, 1:12 p.m. UTC
... and rename it to memhp_default_online_type. This is a preparation
for more detailed default online behavior.

Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 drivers/base/memory.c          | 10 ++++------
 include/linux/memory_hotplug.h |  3 ++-
 mm/memory_hotplug.c            | 11 ++++++-----
 3 files changed, 12 insertions(+), 12 deletions(-)

Comments

Pankaj Gupta March 19, 2020, 5:19 p.m. UTC | #1
> ... and rename it to memhp_default_online_type. This is a preparation
> for more detailed default online behavior.
>
> Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
> Acked-by: Michal Hocko <mhocko@suse.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Michal Hocko <mhocko@kernel.org>
> Cc: Oscar Salvador <osalvador@suse.de>
> Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> Cc: Baoquan He <bhe@redhat.com>
> Cc: Wei Yang <richard.weiyang@gmail.com>
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
>  drivers/base/memory.c          | 10 ++++------
>  include/linux/memory_hotplug.h |  3 ++-
>  mm/memory_hotplug.c            | 11 ++++++-----
>  3 files changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/base/memory.c b/drivers/base/memory.c
> index 8a7f29c0bf97..8d3e16dab69f 100644
> --- a/drivers/base/memory.c
> +++ b/drivers/base/memory.c
> @@ -386,10 +386,8 @@ static DEVICE_ATTR_RO(block_size_bytes);
>  static ssize_t auto_online_blocks_show(struct device *dev,
>                                        struct device_attribute *attr, char *buf)
>  {
> -       if (memhp_auto_online)
> -               return sprintf(buf, "online\n");
> -       else
> -               return sprintf(buf, "offline\n");
> +       return sprintf(buf, "%s\n",
> +                      online_type_to_str[memhp_default_online_type]);
>  }
>
>  static ssize_t auto_online_blocks_store(struct device *dev,
> @@ -397,9 +395,9 @@ static ssize_t auto_online_blocks_store(struct device *dev,
>                                         const char *buf, size_t count)
>  {
>         if (sysfs_streq(buf, "online"))
> -               memhp_auto_online = true;
> +               memhp_default_online_type = MMOP_ONLINE;
>         else if (sysfs_streq(buf, "offline"))
> -               memhp_auto_online = false;
> +               memhp_default_online_type = MMOP_OFFLINE;
>         else
>                 return -EINVAL;
>
> diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
> index 76f3c617a8ab..6d6f85bb66e9 100644
> --- a/include/linux/memory_hotplug.h
> +++ b/include/linux/memory_hotplug.h
> @@ -118,7 +118,8 @@ extern int arch_add_memory(int nid, u64 start, u64 size,
>                            struct mhp_params *params);
>  extern u64 max_mem_size;
>
> -extern bool memhp_auto_online;
> +/* Default online_type (MMOP_*) when new memory blocks are added. */
> +extern int memhp_default_online_type;
>  /* If movable_node boot option specified */
>  extern bool movable_node_enabled;
>  static inline bool movable_node_is_enabled(void)
> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
> index e21a7d53ade5..4efcf8cb9ac5 100644
> --- a/mm/memory_hotplug.c
> +++ b/mm/memory_hotplug.c
> @@ -67,17 +67,17 @@ void put_online_mems(void)
>  bool movable_node_enabled = false;
>
>  #ifndef CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE
> -bool memhp_auto_online;
> +int memhp_default_online_type = MMOP_OFFLINE;
>  #else
> -bool memhp_auto_online = true;
> +int memhp_default_online_type = MMOP_ONLINE;
>  #endif
>
>  static int __init setup_memhp_default_state(char *str)
>  {
>         if (!strcmp(str, "online"))
> -               memhp_auto_online = true;
> +               memhp_default_online_type = MMOP_ONLINE;
>         else if (!strcmp(str, "offline"))
> -               memhp_auto_online = false;
> +               memhp_default_online_type = MMOP_OFFLINE;
>
>         return 1;
>  }
> @@ -993,6 +993,7 @@ static int check_hotplug_memory_range(u64 start, u64 size)
>
>  static int online_memory_block(struct memory_block *mem, void *arg)
>  {
> +       mem->online_type = memhp_default_online_type;
>         return device_online(&mem->dev);
>  }
>
> @@ -1065,7 +1066,7 @@ int __ref add_memory_resource(int nid, struct resource *res)
>         mem_hotplug_done();
>
>         /* online pages if requested */
> -       if (memhp_auto_online)
> +       if (memhp_default_online_type != MMOP_OFFLINE)
>                 walk_memory_blocks(start, size, NULL, online_memory_block);
>
>         return ret;
> --

Acked-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>

> 2.24.1
>
>
diff mbox series

Patch

diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 8a7f29c0bf97..8d3e16dab69f 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -386,10 +386,8 @@  static DEVICE_ATTR_RO(block_size_bytes);
 static ssize_t auto_online_blocks_show(struct device *dev,
 				       struct device_attribute *attr, char *buf)
 {
-	if (memhp_auto_online)
-		return sprintf(buf, "online\n");
-	else
-		return sprintf(buf, "offline\n");
+	return sprintf(buf, "%s\n",
+		       online_type_to_str[memhp_default_online_type]);
 }
 
 static ssize_t auto_online_blocks_store(struct device *dev,
@@ -397,9 +395,9 @@  static ssize_t auto_online_blocks_store(struct device *dev,
 					const char *buf, size_t count)
 {
 	if (sysfs_streq(buf, "online"))
-		memhp_auto_online = true;
+		memhp_default_online_type = MMOP_ONLINE;
 	else if (sysfs_streq(buf, "offline"))
-		memhp_auto_online = false;
+		memhp_default_online_type = MMOP_OFFLINE;
 	else
 		return -EINVAL;
 
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 76f3c617a8ab..6d6f85bb66e9 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -118,7 +118,8 @@  extern int arch_add_memory(int nid, u64 start, u64 size,
 			   struct mhp_params *params);
 extern u64 max_mem_size;
 
-extern bool memhp_auto_online;
+/* Default online_type (MMOP_*) when new memory blocks are added. */
+extern int memhp_default_online_type;
 /* If movable_node boot option specified */
 extern bool movable_node_enabled;
 static inline bool movable_node_is_enabled(void)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index e21a7d53ade5..4efcf8cb9ac5 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -67,17 +67,17 @@  void put_online_mems(void)
 bool movable_node_enabled = false;
 
 #ifndef CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE
-bool memhp_auto_online;
+int memhp_default_online_type = MMOP_OFFLINE;
 #else
-bool memhp_auto_online = true;
+int memhp_default_online_type = MMOP_ONLINE;
 #endif
 
 static int __init setup_memhp_default_state(char *str)
 {
 	if (!strcmp(str, "online"))
-		memhp_auto_online = true;
+		memhp_default_online_type = MMOP_ONLINE;
 	else if (!strcmp(str, "offline"))
-		memhp_auto_online = false;
+		memhp_default_online_type = MMOP_OFFLINE;
 
 	return 1;
 }
@@ -993,6 +993,7 @@  static int check_hotplug_memory_range(u64 start, u64 size)
 
 static int online_memory_block(struct memory_block *mem, void *arg)
 {
+	mem->online_type = memhp_default_online_type;
 	return device_online(&mem->dev);
 }
 
@@ -1065,7 +1066,7 @@  int __ref add_memory_resource(int nid, struct resource *res)
 	mem_hotplug_done();
 
 	/* online pages if requested */
-	if (memhp_auto_online)
+	if (memhp_default_online_type != MMOP_OFFLINE)
 		walk_memory_blocks(start, size, NULL, online_memory_block);
 
 	return ret;