From: Oscar Salvador <[email protected]>
Hi,
I this is a small cleanup for the memhotplug's code.
A lot more could be done, but it is better to start somewhere.
I tried to unify/remove duplicated code.
The following is what this patchset does:
1) add_memory_resource() has code to allocate a node in case it was offline.
Since try_online_node has some code for that as well, I just made add_memory_resource() to
use that so we can remove duplicated code..
This is better explained in patch 1/4.
2) register_mem_sect_under_node() will be called only from link_mem_sections()
3) Make register_mem_sect_under_node() a callback of walk_memory_range()
4) Drop unnecessary checks from register_mem_sect_under_node()
I have done some tests and I could not see anything broken because of
this patchset.
Signed-off-by: Oscar Salvador <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Changes since v1:
- Address issues/suggestions in the provided feedback (Pavel Tatashin)
- Rebased
Oscar Salvador (4):
mm/memory_hotplug: Make add_memory_resource use __try_online_node
mm/memory_hotplug: Call register_mem_sect_under_node
mm/memory_hotplug: Make register_mem_sect_under_node a cb of
walk_memory_range
mm/memory_hotplug: Drop unnecessary checks from
register_mem_sect_under_node
drivers/base/memory.c | 2 --
drivers/base/node.c | 49 ++++----------------------
include/linux/node.h | 12 ++++---
mm/memory_hotplug.c | 96 +++++++++++++++++++++++++--------------------------
4 files changed, 60 insertions(+), 99 deletions(-)
--
2.13.6
From: Oscar Salvador <[email protected]>
When hotpluging memory, it is possible that two calls are being made
to register_mem_sect_under_node().
One comes from __add_section()->hotplug_memory_register()
and the other from add_memory_resource()->link_mem_sections() if
we had to register a new node.
In case we had to register a new node, hotplug_memory_register()
will only handle/allocate the memory_block's since
register_mem_sect_under_node() will return right away because the
node it is not online yet.
I think it is better if we leave hotplug_memory_register() to
handle/allocate only memory_block's and make link_mem_sections()
to call register_mem_sect_under_node().
So this patch removes the call to register_mem_sect_under_node()
from hotplug_memory_register(), and moves the call to link_mem_sections()
out of the condition, so it will always be called.
In this way we only have one place where the memory sections
are registered.
Signed-off-by: Oscar Salvador <[email protected]>
Reviewed-by: Pavel Tatashin <[email protected]>
---
drivers/base/memory.c | 2 --
mm/memory_hotplug.c | 32 +++++++++++---------------------
2 files changed, 11 insertions(+), 23 deletions(-)
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index f5e560188a18..c8a1cb0b6136 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -736,8 +736,6 @@ int hotplug_memory_register(int nid, struct mem_section *section)
mem->section_count++;
}
- if (mem->section_count == sections_per_block)
- ret = register_mem_sect_under_node(mem, nid, false);
out:
mutex_unlock(&mem_sysfs_mutex);
return ret;
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 504ba120bdfc..e2ed64b994e5 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1123,6 +1123,7 @@ int __ref add_memory_resource(int nid, struct resource *res, bool online)
u64 start, size;
bool new_node = false;
int ret;
+ unsigned long start_pfn, nr_pages;
start = res->start;
size = resource_size(res);
@@ -1151,34 +1152,23 @@ int __ref add_memory_resource(int nid, struct resource *res, bool online)
if (ret < 0)
goto error;
- /* we online node here. we can't roll back from here. */
- node_set_online(nid);
-
if (new_node) {
- unsigned long start_pfn = start >> PAGE_SHIFT;
- unsigned long nr_pages = size >> PAGE_SHIFT;
-
- ret = __register_one_node(nid);
- if (ret)
- goto register_fail;
-
- /*
- * link memory sections under this node. This is already
- * done when creatig memory section in register_new_memory
- * but that depends to have the node registered so offline
- * nodes have to go through register_node.
- * TODO clean up this mess.
- */
- ret = link_mem_sections(nid, start_pfn, nr_pages, false);
-register_fail:
- /*
- * If sysfs file of new node can't create, cpu on the node
+ /* If sysfs file of new node can't be created, cpu on the node
* can't be hot-added. There is no rollback way now.
* So, check by BUG_ON() to catch it reluctantly..
+ * We online node here. We can't roll back from here.
*/
+ node_set_online(nid);
+ ret = __register_one_node(nid);
BUG_ON(ret);
}
+ /* link memory sections under this node.*/
+ start_pfn = start >> PAGE_SHIFT;
+ nr_pages = size >> PAGE_SHIFT;
+ ret = link_mem_sections(nid, start_pfn, nr_pages, false);
+ BUG_ON(ret);
+
/* create new memmap entry */
firmware_map_add_hotplug(start, start + size, "System RAM");
--
2.13.6
From: Oscar Salvador <[email protected]>
add_memory_resource() contains code to allocate a new node in case
it is necessary.
Since try_online_node() also hast some code for this purpose,
let us make use of that and remove duplicate code.
This introduces __try_online_node(), which is called by
add_memory_resource() and try_online_node().
__try_online_node() has two new parameters, start_addr of the node,
and if the node should be onlined and registered right away.
This is always wanted if we are calling from do_cpu_up(), but not
when we are calling from memhotplug code.
Nothing changes from the point of view of the users of try_online_node(),
since try_online_node passes start_addr=0 and online_node=true to
__try_online_node().
Signed-off-by: Oscar Salvador <[email protected]>
Reviewed-by: Pavel Tatashin <[email protected]>
---
mm/memory_hotplug.c | 67 +++++++++++++++++++++++++++++++----------------------
1 file changed, 39 insertions(+), 28 deletions(-)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 7deb49f69e27..504ba120bdfc 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1034,8 +1034,10 @@ static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start)
return pgdat;
}
-static void rollback_node_hotadd(int nid, pg_data_t *pgdat)
+static void rollback_node_hotadd(int nid)
{
+ pg_data_t *pgdat = NODE_DATA(nid);
+
arch_refresh_nodedata(nid, NULL);
free_percpu(pgdat->per_cpu_nodestats);
arch_free_nodedata(pgdat);
@@ -1046,28 +1048,48 @@ static void rollback_node_hotadd(int nid, pg_data_t *pgdat)
/**
* try_online_node - online a node if offlined
* @nid: the node ID
- *
+ * @start: start addr of the node
+ * @set_node_online: Whether we want to online the node
* called by cpu_up() to online a node without onlined memory.
+ *
+ * Returns:
+ * 1 -> a new node has been allocated
+ * 0 -> the node is already online
+ * -ENOMEM -> the node could not be allocated
*/
-int try_online_node(int nid)
+static int __try_online_node(int nid, u64 start, bool set_node_online)
{
- pg_data_t *pgdat;
- int ret;
+ pg_data_t *pgdat;
+ int ret = 1;
if (node_online(nid))
return 0;
- mem_hotplug_begin();
- pgdat = hotadd_new_pgdat(nid, 0);
+ pgdat = hotadd_new_pgdat(nid, start);
if (!pgdat) {
pr_err("Cannot online node %d due to NULL pgdat\n", nid);
ret = -ENOMEM;
goto out;
}
- node_set_online(nid);
- ret = register_one_node(nid);
- BUG_ON(ret);
+
+ if (set_node_online) {
+ node_set_online(nid);
+ ret = register_one_node(nid);
+ BUG_ON(ret);
+ }
out:
+ return ret;
+}
+
+/*
+ * Users of this function always want to online/register the node
+ */
+int try_online_node(int nid)
+{
+ int ret;
+
+ mem_hotplug_begin();
+ ret = __try_online_node(nid, 0, true);
mem_hotplug_done();
return ret;
}
@@ -1099,9 +1121,7 @@ static int online_memory_block(struct memory_block *mem, void *arg)
int __ref add_memory_resource(int nid, struct resource *res, bool online)
{
u64 start, size;
- pg_data_t *pgdat = NULL;
- bool new_pgdat;
- bool new_node;
+ bool new_node = false;
int ret;
start = res->start;
@@ -1111,11 +1131,6 @@ int __ref add_memory_resource(int nid, struct resource *res, bool online)
if (ret)
return ret;
- { /* Stupid hack to suppress address-never-null warning */
- void *p = NODE_DATA(nid);
- new_pgdat = !p;
- }
-
mem_hotplug_begin();
/*
@@ -1126,17 +1141,13 @@ int __ref add_memory_resource(int nid, struct resource *res, bool online)
*/
memblock_add_node(start, size, nid);
- new_node = !node_online(nid);
- if (new_node) {
- pgdat = hotadd_new_pgdat(nid, start);
- ret = -ENOMEM;
- if (!pgdat)
- goto error;
- }
+ ret = __try_online_node(nid, start, false);
+ if (ret < 0)
+ goto error;
+ new_node = ret;
/* call arch's memory hotadd */
ret = arch_add_memory(nid, start, size, NULL, true);
-
if (ret < 0)
goto error;
@@ -1180,8 +1191,8 @@ int __ref add_memory_resource(int nid, struct resource *res, bool online)
error:
/* rollback pgdat allocation and others */
- if (new_pgdat && pgdat)
- rollback_node_hotadd(nid, pgdat);
+ if (new_node)
+ rollback_node_hotadd(nid);
memblock_remove(start, size);
out:
--
2.13.6
From: Oscar Salvador <[email protected]>
link_mem_sections() and walk_memory_range() share most of the code,
so we can use convert link_mem_sections() into a dummy function that calls
walk_memory_range() with a callback to register_mem_sect_under_node().
This patch converts register_mem_sect_under_node() in order to
match a walk_memory_range's callback, getting rid of the
check_nid argument and checking instead if the system is still
boothing, since we only have to check for the nid if the system
is in such state.
Signed-off-by: Oscar Salvador <[email protected]>
Suggested-by: Pavel Tatashin <[email protected]>
---
drivers/base/node.c | 44 ++++++--------------------------------------
include/linux/node.h | 12 +++++++-----
mm/memory_hotplug.c | 5 +----
3 files changed, 14 insertions(+), 47 deletions(-)
diff --git a/drivers/base/node.c b/drivers/base/node.c
index a5e821d09656..845d5523812b 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -399,10 +399,9 @@ static int __ref get_nid_for_pfn(unsigned long pfn)
}
/* register memory section under specified node if it spans that node */
-int register_mem_sect_under_node(struct memory_block *mem_blk, int nid,
- bool check_nid)
+int register_mem_sect_under_node(struct memory_block *mem_blk, void *arg)
{
- int ret;
+ int ret, nid = *(int *)arg;
unsigned long pfn, sect_start_pfn, sect_end_pfn;
if (!mem_blk)
@@ -433,7 +432,7 @@ int register_mem_sect_under_node(struct memory_block *mem_blk, int nid,
* case, during hotplug we know that all pages in the memory
* block belong to the same node.
*/
- if (check_nid) {
+ if (system_state == SYSTEM_BOOTING) {
page_nid = get_nid_for_pfn(pfn);
if (page_nid < 0)
continue;
@@ -490,41 +489,10 @@ int unregister_mem_sect_under_nodes(struct memory_block *mem_blk,
return 0;
}
-int link_mem_sections(int nid, unsigned long start_pfn, unsigned long nr_pages,
- bool check_nid)
+int link_mem_sections(int nid, unsigned long start_pfn, unsigned long end_pfn)
{
- unsigned long end_pfn = start_pfn + nr_pages;
- unsigned long pfn;
- struct memory_block *mem_blk = NULL;
- int err = 0;
-
- for (pfn = start_pfn; pfn < end_pfn; pfn += PAGES_PER_SECTION) {
- unsigned long section_nr = pfn_to_section_nr(pfn);
- struct mem_section *mem_sect;
- int ret;
-
- if (!present_section_nr(section_nr))
- continue;
- mem_sect = __nr_to_section(section_nr);
-
- /* same memblock ? */
- if (mem_blk)
- if ((section_nr >= mem_blk->start_section_nr) &&
- (section_nr <= mem_blk->end_section_nr))
- continue;
-
- mem_blk = find_memory_block_hinted(mem_sect, mem_blk);
-
- ret = register_mem_sect_under_node(mem_blk, nid, check_nid);
- if (!err)
- err = ret;
-
- /* discard ref obtained in find_memory_block() */
- }
-
- if (mem_blk)
- kobject_put(&mem_blk->dev.kobj);
- return err;
+ return walk_memory_range(start_pfn, end_pfn, (void *)&nid,
+ register_mem_sect_under_node);
}
#ifdef CONFIG_HUGETLBFS
diff --git a/include/linux/node.h b/include/linux/node.h
index 6d336e38d155..257bb3d6d014 100644
--- a/include/linux/node.h
+++ b/include/linux/node.h
@@ -33,10 +33,10 @@ typedef void (*node_registration_func_t)(struct node *);
#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_NUMA)
extern int link_mem_sections(int nid, unsigned long start_pfn,
- unsigned long nr_pages, bool check_nid);
+ unsigned long end_pfn);
#else
static inline int link_mem_sections(int nid, unsigned long start_pfn,
- unsigned long nr_pages, bool check_nid)
+ unsigned long end_pfn)
{
return 0;
}
@@ -54,12 +54,14 @@ static inline int register_one_node(int nid)
if (node_online(nid)) {
struct pglist_data *pgdat = NODE_DATA(nid);
+ unsigned long start_pfn = pgdat->node_start_pfn;
+ unsigned long end_pfn = start_pfn + pgdat->node_spanned_pages;
error = __register_one_node(nid);
if (error)
return error;
/* link memory sections under this node */
- error = link_mem_sections(nid, pgdat->node_start_pfn, pgdat->node_spanned_pages, true);
+ error = link_mem_sections(nid, start_pfn, end_pfn);
}
return error;
@@ -69,7 +71,7 @@ extern void unregister_one_node(int nid);
extern int register_cpu_under_node(unsigned int cpu, unsigned int nid);
extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid);
extern int register_mem_sect_under_node(struct memory_block *mem_blk,
- int nid, bool check_nid);
+ void *arg);
extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk,
unsigned long phys_index);
@@ -99,7 +101,7 @@ static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
return 0;
}
static inline int register_mem_sect_under_node(struct memory_block *mem_blk,
- int nid, bool check_nid)
+ void *arg)
{
return 0;
}
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index e2ed64b994e5..4eb6e824a80c 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1123,7 +1123,6 @@ int __ref add_memory_resource(int nid, struct resource *res, bool online)
u64 start, size;
bool new_node = false;
int ret;
- unsigned long start_pfn, nr_pages;
start = res->start;
size = resource_size(res);
@@ -1164,9 +1163,7 @@ int __ref add_memory_resource(int nid, struct resource *res, bool online)
}
/* link memory sections under this node.*/
- start_pfn = start >> PAGE_SHIFT;
- nr_pages = size >> PAGE_SHIFT;
- ret = link_mem_sections(nid, start_pfn, nr_pages, false);
+ ret = link_mem_sections(nid, PFN_DOWN(start), PFN_UP(start + size - 1));
BUG_ON(ret);
/* create new memmap entry */
--
2.13.6
From: Oscar Salvador <[email protected]>
Callers of register_mem_sect_under_node() are always passing a valid
memory_block (not NULL), so we can safely drop the check for NULL.
In the same way, register_mem_sect_under_node() is only called in case
the node is online, so we can safely remove that check as well.
Signed-off-by: Oscar Salvador <[email protected]>
Reviewed-by: Pavel Tatashin <[email protected]>
---
drivers/base/node.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 845d5523812b..1ac4c36e13bb 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -404,12 +404,7 @@ int register_mem_sect_under_node(struct memory_block *mem_blk, void *arg)
int ret, nid = *(int *)arg;
unsigned long pfn, sect_start_pfn, sect_end_pfn;
- if (!mem_blk)
- return -EFAULT;
-
mem_blk->nid = nid;
- if (!node_online(nid))
- return 0;
sect_start_pfn = section_nr_to_pfn(mem_blk->start_section_nr);
sect_end_pfn = section_nr_to_pfn(mem_blk->end_section_nr);
--
2.13.6
On Thu, Jun 21, 2018 at 10:32:58AM +0200, Michal Hocko wrote:
>[Cc Reza Arbab - I remember he was able to hit some bugs in memblock
>registration code when I was reworking that area previously]
Thanks for the heads-up!
I have verified that this patchset doesn't seem to cause any regression
in the kooky memoryless node use case I was testing.
--
Reza Arbab
On Fri, 22 Jun 2018 13:18:38 +0200 [email protected] wrote:
> From: Oscar Salvador <[email protected]>
>
> link_mem_sections() and walk_memory_range() share most of the code,
> so we can use convert link_mem_sections() into a dummy function that calls
> walk_memory_range() with a callback to register_mem_sect_under_node().
>
> This patch converts register_mem_sect_under_node() in order to
> match a walk_memory_range's callback, getting rid of the
> check_nid argument and checking instead if the system is still
> boothing, since we only have to check for the nid if the system
> is in such state.
>
> Signed-off-by: Oscar Salvador <[email protected]>
> Suggested-by: Pavel Tatashin <[email protected]>
We have two tested-by's bu no reviewers or ackers?
From: Oscar Salvador <[email protected]>
Subject: mm/memory_hotplug.c: make register_mem_sect_under_node() a callback of walk_memory_range()
link_mem_sections() and walk_memory_range() share most of the code, so we
can use convert link_mem_sections() into a dummy function that calls
walk_memory_range() with a callback to register_mem_sect_under_node().
This patch converts register_mem_sect_under_node() in order to match a
walk_memory_range's callback, getting rid of the check_nid argument and
checking instead if the system is still boothing, since we only have to
check for the nid if the system is in such state.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Oscar Salvador <[email protected]>
Suggested-by: Pavel Tatashin <[email protected]>
Tested-by: Reza Arbab <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---
drivers/base/node.c | 44 +++++------------------------------------
include/linux/node.h | 12 ++++++-----
mm/memory_hotplug.c | 5 ----
3 files changed, 14 insertions(+), 47 deletions(-)
--- a/drivers/base/node.c~mm-memory_hotplug-make-register_mem_sect_under_node-a-cb-of-walk_memory_range
+++ a/drivers/base/node.c
@@ -399,10 +399,9 @@ static int __ref get_nid_for_pfn(unsigne
}
/* register memory section under specified node if it spans that node */
-int register_mem_sect_under_node(struct memory_block *mem_blk, int nid,
- bool check_nid)
+int register_mem_sect_under_node(struct memory_block *mem_blk, void *arg)
{
- int ret;
+ int ret, nid = *(int *)arg;
unsigned long pfn, sect_start_pfn, sect_end_pfn;
if (!mem_blk)
@@ -433,7 +432,7 @@ int register_mem_sect_under_node(struct
* case, during hotplug we know that all pages in the memory
* block belong to the same node.
*/
- if (check_nid) {
+ if (system_state == SYSTEM_BOOTING) {
page_nid = get_nid_for_pfn(pfn);
if (page_nid < 0)
continue;
@@ -490,41 +489,10 @@ int unregister_mem_sect_under_nodes(stru
return 0;
}
-int link_mem_sections(int nid, unsigned long start_pfn, unsigned long nr_pages,
- bool check_nid)
+int link_mem_sections(int nid, unsigned long start_pfn, unsigned long end_pfn)
{
- unsigned long end_pfn = start_pfn + nr_pages;
- unsigned long pfn;
- struct memory_block *mem_blk = NULL;
- int err = 0;
-
- for (pfn = start_pfn; pfn < end_pfn; pfn += PAGES_PER_SECTION) {
- unsigned long section_nr = pfn_to_section_nr(pfn);
- struct mem_section *mem_sect;
- int ret;
-
- if (!present_section_nr(section_nr))
- continue;
- mem_sect = __nr_to_section(section_nr);
-
- /* same memblock ? */
- if (mem_blk)
- if ((section_nr >= mem_blk->start_section_nr) &&
- (section_nr <= mem_blk->end_section_nr))
- continue;
-
- mem_blk = find_memory_block_hinted(mem_sect, mem_blk);
-
- ret = register_mem_sect_under_node(mem_blk, nid, check_nid);
- if (!err)
- err = ret;
-
- /* discard ref obtained in find_memory_block() */
- }
-
- if (mem_blk)
- kobject_put(&mem_blk->dev.kobj);
- return err;
+ return walk_memory_range(start_pfn, end_pfn, (void *)&nid,
+ register_mem_sect_under_node);
}
#ifdef CONFIG_HUGETLBFS
--- a/include/linux/node.h~mm-memory_hotplug-make-register_mem_sect_under_node-a-cb-of-walk_memory_range
+++ a/include/linux/node.h
@@ -33,10 +33,10 @@ typedef void (*node_registration_func_t
#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_NUMA)
extern int link_mem_sections(int nid, unsigned long start_pfn,
- unsigned long nr_pages, bool check_nid);
+ unsigned long end_pfn);
#else
static inline int link_mem_sections(int nid, unsigned long start_pfn,
- unsigned long nr_pages, bool check_nid)
+ unsigned long end_pfn)
{
return 0;
}
@@ -54,12 +54,14 @@ static inline int register_one_node(int
if (node_online(nid)) {
struct pglist_data *pgdat = NODE_DATA(nid);
+ unsigned long start_pfn = pgdat->node_start_pfn;
+ unsigned long end_pfn = start_pfn + pgdat->node_spanned_pages;
error = __register_one_node(nid);
if (error)
return error;
/* link memory sections under this node */
- error = link_mem_sections(nid, pgdat->node_start_pfn, pgdat->node_spanned_pages, true);
+ error = link_mem_sections(nid, start_pfn, end_pfn);
}
return error;
@@ -69,7 +71,7 @@ extern void unregister_one_node(int nid)
extern int register_cpu_under_node(unsigned int cpu, unsigned int nid);
extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid);
extern int register_mem_sect_under_node(struct memory_block *mem_blk,
- int nid, bool check_nid);
+ void *arg);
extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk,
unsigned long phys_index);
@@ -99,7 +101,7 @@ static inline int unregister_cpu_under_n
return 0;
}
static inline int register_mem_sect_under_node(struct memory_block *mem_blk,
- int nid, bool check_nid)
+ void *arg)
{
return 0;
}
--- a/mm/memory_hotplug.c~mm-memory_hotplug-make-register_mem_sect_under_node-a-cb-of-walk_memory_range
+++ a/mm/memory_hotplug.c
@@ -1123,7 +1123,6 @@ int __ref add_memory_resource(int nid, s
u64 start, size;
bool new_node = false;
int ret;
- unsigned long start_pfn, nr_pages;
start = res->start;
size = resource_size(res);
@@ -1164,9 +1163,7 @@ int __ref add_memory_resource(int nid, s
}
/* link memory sections under this node.*/
- start_pfn = start >> PAGE_SHIFT;
- nr_pages = size >> PAGE_SHIFT;
- ret = link_mem_sections(nid, start_pfn, nr_pages, false);
+ ret = link_mem_sections(nid, PFN_DOWN(start), PFN_UP(start + size - 1));
BUG_ON(ret);
/* create new memmap entry */
_
On Wed, Aug 15, 2018 at 03:21:35PM -0700, Andrew Morton wrote:
> On Fri, 22 Jun 2018 13:18:38 +0200 [email protected] wrote:
>
> > From: Oscar Salvador <[email protected]>
> >
> > link_mem_sections() and walk_memory_range() share most of the code,
> > so we can use convert link_mem_sections() into a dummy function that calls
> > walk_memory_range() with a callback to register_mem_sect_under_node().
> >
> > This patch converts register_mem_sect_under_node() in order to
> > match a walk_memory_range's callback, getting rid of the
> > check_nid argument and checking instead if the system is still
> > boothing, since we only have to check for the nid if the system
> > is in such state.
> >
> > Signed-off-by: Oscar Salvador <[email protected]>
> > Suggested-by: Pavel Tatashin <[email protected]>
>
> We have two tested-by's bu no reviewers or ackers?
Pavel, would you be so kind to review this patch?
It is the only patch from the patchset which did not get a
review.
Thanks!
--
Oscar Salvador
SUSE L3
On 18-06-22 13:18:38, [email protected] wrote:
> From: Oscar Salvador <[email protected]>
>
> link_mem_sections() and walk_memory_range() share most of the code,
> so we can use convert link_mem_sections() into a dummy function that calls
> walk_memory_range() with a callback to register_mem_sect_under_node().
>
> This patch converts register_mem_sect_under_node() in order to
> match a walk_memory_range's callback, getting rid of the
> check_nid argument and checking instead if the system is still
> boothing, since we only have to check for the nid if the system
> is in such state.
>
> Signed-off-by: Oscar Salvador <[email protected]>
> Suggested-by: Pavel Tatashin <[email protected]>
Reviewed-by: Pavel Tatashin <[email protected]>