diff mbox series

[net-next,3/6] net: page_pool: Add a high order alloc stat

Message ID 1643237300-44904-4-git-send-email-jdamato@fastly.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series net: page_pool: Add page_pool stat counters | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 5991 this patch: 5991
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 882 this patch: 882
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 6142 this patch: 6142
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 36 lines checked
netdev/kdoc success Errors and warnings before: 2 this patch: 2
netdev/source_inline success Was 0 now: 0

Commit Message

Joe Damato Jan. 26, 2022, 10:48 p.m. UTC 
Add a stat to track high order allocations in the slow path. A static
inline function is exposed for accessing this stat.

Signed-off-by: Joe Damato <jdamato@fastly.com>
---
 include/net/page_pool.h | 11 +++++++++++
 net/core/page_pool.c    |  1 +
 2 files changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/include/net/page_pool.h b/include/net/page_pool.h
index b5691ee..b024197 100644
--- a/include/net/page_pool.h
+++ b/include/net/page_pool.h
@@ -83,6 +83,7 @@  struct page_pool_stats {
 	struct {
 		u64 fast; /* fast path allocations */
 		u64 slow; /* slow-path order-0 allocations */
+		u64 slow_high_order; /* slow-path high order allocations */
 	} alloc;
 };
 
@@ -206,6 +207,11 @@  static inline u64 page_pool_stats_get_slow(struct page_pool *pool)
 {
 	return pool->ps.alloc.slow;
 }
+
+static inline u64 page_pool_stats_get_slow_high_order(struct page_pool *pool)
+{
+	return pool->ps.alloc.slow_high_order;
+}
 #else
 static inline void page_pool_destroy(struct page_pool *pool)
 {
@@ -235,6 +241,11 @@  static inline u64 page_pool_stats_get_slow(struct page_pool *pool)
 {
 	return 0;
 }
+
+static inline u64 page_pool_stats_get_slow_high_order(struct page_pool *pool)
+{
+	return 0;
+}
 #endif
 
 void page_pool_put_page(struct page_pool *pool, struct page *page,
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 9dbe721..3a4b912 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -240,6 +240,7 @@  static struct page *__page_pool_alloc_page_order(struct page_pool *pool,
 		return NULL;
 	}
 
+	pool->ps.alloc.slow_high_order++;
 	page_pool_set_pp_info(pool, page);
 
 	/* Track how many pages are held 'in-flight' */