diff mbox series

[net-next,v2,04/10] page_pool: Add stat tracking fast path allocations

Message ID 1643499540-8351-5-git-send-email-jdamato@fastly.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series 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: 5979 this patch: 5979
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 879 this patch: 879
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: 6130 this patch: 6130
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 16 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Joe Damato Jan. 29, 2022, 11:38 p.m. UTC 
Add a counter to track successful fast-path allocations.

Signed-off-by: Joe Damato <jdamato@fastly.com>
---
 include/net/page_pool.h | 3 +++
 net/core/page_pool.c    | 1 +
 2 files changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/include/net/page_pool.h b/include/net/page_pool.h
index dae65f2..96949ad 100644
--- a/include/net/page_pool.h
+++ b/include/net/page_pool.h
@@ -142,6 +142,9 @@  struct page_pool {
  * stats for tracking page_pool events.
  */
 struct page_pool_stats {
+	struct {
+		u64 fast; /* fast path allocations */
+	} alloc;
 };
 
 DECLARE_PER_CPU_ALIGNED(struct page_pool_stats, page_pool_stats);
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index b1a2599..6f692d9 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -180,6 +180,7 @@  static struct page *__page_pool_get_cached(struct page_pool *pool)
 	if (likely(pool->alloc.count)) {
 		/* Fast-path */
 		page = pool->alloc.cache[--pool->alloc.count];
+		page_pool_stat_alloc_inc(fast);
 	} else {
 		page = page_pool_refill_alloc_cache(pool);
 	}