Re: [PATCH v4 2/9] hugetlb_cgroup: add interface for charge/uncharge hugetlb reservations
On 9/10/19 5:31 PM, Mina Almasry wrote:
Augements hugetlb_cgroup_charge_cgroup to be able to charge hugetlb
usage or hugetlb reservation counter.
Augments?
Adds a new interface to uncharge a hugetlb_cgroup counter via
hugetlb_cgroup_uncharge_counter.
Integrates the counter with hugetlb_cgroup, via hugetlb_cgroup_init,
hugetlb_cgroup_have_usage, and hugetlb_cgroup_css_offline.
Signed-off-by: Mina Almasry
---
include/linux/hugetlb_cgroup.h | 13 --
mm/hugetlb.c | 6 ++-
mm/hugetlb_cgroup.c| 82 +++---
3 files changed, 80 insertions(+), 21 deletions(-)
diff --git a/include/linux/hugetlb_cgroup.h b/include/linux/hugetlb_cgroup.h
index 063962f6dfc6a..c467715dd8fb8 100644
--- a/include/linux/hugetlb_cgroup.h
+++ b/include/linux/hugetlb_cgroup.h
@@ -52,14 +52,19 @@ static inline bool hugetlb_cgroup_disabled(void)
}
extern int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
- struct hugetlb_cgroup **ptr);
+ struct hugetlb_cgroup **ptr,
+ bool reserved);
extern void hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
struct hugetlb_cgroup *h_cg,
struct page *page);
extern void hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages,
struct page *page);
extern void hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
- struct hugetlb_cgroup *h_cg);
+ struct hugetlb_cgroup *h_cg,
+ bool reserved);
+extern void hugetlb_cgroup_uncharge_counter(struct page_counter *p,
+ unsigned long nr_pages);
+
extern void hugetlb_cgroup_file_init(void) __init;
extern void hugetlb_cgroup_migrate(struct page *oldhpage,
struct page *newhpage);
@@ -83,7 +88,7 @@ static inline bool hugetlb_cgroup_disabled(void)
static inline int
hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
-struct hugetlb_cgroup **ptr)
+struct hugetlb_cgroup **ptr, bool reserved)
Please line the arguments.
{
return 0;
}
@@ -102,7 +107,7 @@ hugetlb_cgroup_uncharge_page(int idx, unsigned long
nr_pages, struct page *page)
static inline void
hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
- struct hugetlb_cgroup *h_cg)
+ struct hugetlb_cgroup *h_cg, bool reserved)
Same here.
{
}
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 6d7296dd11b83..e975f55aede94 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2078,7 +2078,8 @@ struct page *alloc_huge_page(struct vm_area_struct *vma,
gbl_chg = 1;
}
- ret = hugetlb_cgroup_charge_cgroup(idx, pages_per_huge_page(h), _cg);
+ ret = hugetlb_cgroup_charge_cgroup(idx, pages_per_huge_page(h), _cg,
+ false);
if (ret)
goto out_subpool_put;
@@ -2126,7 +2127,8 @@ struct page *alloc_huge_page(struct vm_area_struct *vma,
return page;
out_uncharge_cgroup:
- hugetlb_cgroup_uncharge_cgroup(idx, pages_per_huge_page(h), h_cg);
+ hugetlb_cgroup_uncharge_cgroup(idx, pages_per_huge_page(h), h_cg,
+ false);
Please be consistent with indentation. Line this up like you did above.
out_subpool_put:
if (map_chg || avoid_reserve)
hugepage_subpool_put_pages(spool, 1);
diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c
index 51a72624bd1ff..2ab36a98d834e 100644
--- a/mm/hugetlb_cgroup.c
+++ b/mm/hugetlb_cgroup.c
@@ -38,8 +38,8 @@ struct hugetlb_cgroup {
static struct hugetlb_cgroup *root_h_cgroup __read_mostly;
static inline
-struct page_counter *hugetlb_cgroup_get_counter(struct hugetlb_cgroup *h_cg,
int idx,
-bool reserved)
+struct page_counter *hugetlb_cgroup_get_counter(struct hugetlb_cgroup *h_cg,
+ int idx, bool reserved)
Same here.
{
if (reserved)
return _cg->reserved_hugepage[idx];
@@ -74,8 +74,12 @@ static inline bool hugetlb_cgroup_have_usage(struct
hugetlb_cgroup *h_cg)
int idx;
for (idx = 0; idx < hugetlb_max_hstate; idx++) {
- if (page_counter_read(_cg->hugepage[idx]))
+ if (page_counter_read(hugetlb_cgroup_get_counter(h_cg, idx,
+ true)) ||
+ page_counter_read(hugetlb_cgroup_get_counter(h_cg, idx,
+ false))) {
return true;
+ }
}
[PATCH v4 2/9] hugetlb_cgroup: add interface for charge/uncharge hugetlb reservations
Augements hugetlb_cgroup_charge_cgroup to be able to charge hugetlb
usage or hugetlb reservation counter.
Adds a new interface to uncharge a hugetlb_cgroup counter via
hugetlb_cgroup_uncharge_counter.
Integrates the counter with hugetlb_cgroup, via hugetlb_cgroup_init,
hugetlb_cgroup_have_usage, and hugetlb_cgroup_css_offline.
Signed-off-by: Mina Almasry
---
include/linux/hugetlb_cgroup.h | 13 --
mm/hugetlb.c | 6 ++-
mm/hugetlb_cgroup.c| 82 +++---
3 files changed, 80 insertions(+), 21 deletions(-)
diff --git a/include/linux/hugetlb_cgroup.h b/include/linux/hugetlb_cgroup.h
index 063962f6dfc6a..c467715dd8fb8 100644
--- a/include/linux/hugetlb_cgroup.h
+++ b/include/linux/hugetlb_cgroup.h
@@ -52,14 +52,19 @@ static inline bool hugetlb_cgroup_disabled(void)
}
extern int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
- struct hugetlb_cgroup **ptr);
+ struct hugetlb_cgroup **ptr,
+ bool reserved);
extern void hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
struct hugetlb_cgroup *h_cg,
struct page *page);
extern void hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages,
struct page *page);
extern void hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
- struct hugetlb_cgroup *h_cg);
+ struct hugetlb_cgroup *h_cg,
+ bool reserved);
+extern void hugetlb_cgroup_uncharge_counter(struct page_counter *p,
+ unsigned long nr_pages);
+
extern void hugetlb_cgroup_file_init(void) __init;
extern void hugetlb_cgroup_migrate(struct page *oldhpage,
struct page *newhpage);
@@ -83,7 +88,7 @@ static inline bool hugetlb_cgroup_disabled(void)
static inline int
hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
-struct hugetlb_cgroup **ptr)
+struct hugetlb_cgroup **ptr, bool reserved)
{
return 0;
}
@@ -102,7 +107,7 @@ hugetlb_cgroup_uncharge_page(int idx, unsigned long
nr_pages, struct page *page)
static inline void
hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
- struct hugetlb_cgroup *h_cg)
+ struct hugetlb_cgroup *h_cg, bool reserved)
{
}
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 6d7296dd11b83..e975f55aede94 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2078,7 +2078,8 @@ struct page *alloc_huge_page(struct vm_area_struct *vma,
gbl_chg = 1;
}
- ret = hugetlb_cgroup_charge_cgroup(idx, pages_per_huge_page(h), _cg);
+ ret = hugetlb_cgroup_charge_cgroup(idx, pages_per_huge_page(h), _cg,
+ false);
if (ret)
goto out_subpool_put;
@@ -2126,7 +2127,8 @@ struct page *alloc_huge_page(struct vm_area_struct *vma,
return page;
out_uncharge_cgroup:
- hugetlb_cgroup_uncharge_cgroup(idx, pages_per_huge_page(h), h_cg);
+ hugetlb_cgroup_uncharge_cgroup(idx, pages_per_huge_page(h), h_cg,
+ false);
out_subpool_put:
if (map_chg || avoid_reserve)
hugepage_subpool_put_pages(spool, 1);
diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c
index 51a72624bd1ff..2ab36a98d834e 100644
--- a/mm/hugetlb_cgroup.c
+++ b/mm/hugetlb_cgroup.c
@@ -38,8 +38,8 @@ struct hugetlb_cgroup {
static struct hugetlb_cgroup *root_h_cgroup __read_mostly;
static inline
-struct page_counter *hugetlb_cgroup_get_counter(struct hugetlb_cgroup *h_cg,
int idx,
-bool reserved)
+struct page_counter *hugetlb_cgroup_get_counter(struct hugetlb_cgroup *h_cg,
+ int idx, bool reserved)
{
if (reserved)
return _cg->reserved_hugepage[idx];
@@ -74,8 +74,12 @@ static inline bool hugetlb_cgroup_have_usage(struct
hugetlb_cgroup *h_cg)
int idx;
for (idx = 0; idx < hugetlb_max_hstate; idx++) {
- if (page_counter_read(_cg->hugepage[idx]))
+ if (page_counter_read(hugetlb_cgroup_get_counter(h_cg, idx,
+ true)) ||
+ page_counter_read(hugetlb_cgroup_get_counter(h_cg, idx,
+ false))) {
return true;
+ }
}
return false;
}
@@ -86,18 +90,30 @@ static void hugetlb_cgroup_init(struct hugetlb_cgroup
*h_cgroup,
int idx;
for (idx = 0; idx < HUGE_MAX_HSTATE; idx++) {
- struct
