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Mon, 28 Sep 2026 11:48:14 +0000 X-Mizu-Trace-ID: cc434b568fabe6dc X-Migadu-Flow: FLOW_OUT From: Ridong Chen To: Steven Rostedt , Masami Hiramatsu , Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt , Andrew Morton , Dave Chinner Cc: Mathieu Desnoyers , Muchun Song , Qi Zheng , Kairui Song , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Baoquan He , Baolin Wang , David Hildenbrand , Lorenzo Stoakes , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, cgroups@vger.kernel.org (open list:CONTROL GROUP - MEMORY RESOURCE CONTROLLER (MEMCG)), linux-mm@kvack.org (open list:CONTROL GROUP - MEMORY RESOURCE CONTROLLER (MEMCG)), Ridong Chen , Ridong Chen Subject: [PATCH RFC v2 7/7] mm/vmscan: pass scan_control to mm_vmscan_balance_pgdat_end Date: Mon, 28 Sep 2026 19:46:24 +0800 Message-Id: <20260928114625.3609130-8-ridong.chen@linux.dev> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260928114625.3609130-1-ridong.chen@linux.dev> References: <20260928114625.3609130-1-ridong.chen@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: BF3951A000A X-Rspam-User: X-Rspamd-Server: rspam07 X-Stat-Signature: kwjca1thmig5bweyw5mshpm4mkre8ynq X-HE-Tag: 1790596095-883130 X-HE-Meta: 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 P2g06e1c 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 EHaoxA+D U9soJBMHRA1gawZje8jXNqR2bvT6u917BBTsk/RBrynzl9qCncv3s/brPK3FEMTZl55CJvzltxo= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Ridong Chen balance_pgdat() passes sc.order and sc.nr_reclaimed to mm_vmscan_balance_pgdat_end as bare arguments. Pass the enclosing struct scan_control instead and read the fields out in TP_fast_assign, mirroring mm_vmscan_balance_pgdat_begin. highest_zoneidx stays a separate argument as it is a local of balance_pgdat() rather than a scan_control field. The exported event format is unchanged. No functional change. Assisted-by: Claude:claude-opus-4-8 Signed-off-by: Ridong Chen --- mm/trace_vmscan.h | 9 ++++----- mm/vmscan.c | 3 +-- 2 files changed, 5 insertions(+), 7 deletions(-) diff --git a/mm/trace_vmscan.h b/mm/trace_vmscan.h index 04f285e77659..c27bc7cc6063 100644 --- a/mm/trace_vmscan.h +++ b/mm/trace_vmscan.h @@ -124,10 +124,9 @@ TRACE_EVENT(mm_vmscan_balance_pgdat_begin, TRACE_EVENT(mm_vmscan_balance_pgdat_end, - TP_PROTO(int nid, int order, int highest_zoneidx, - unsigned long nr_reclaimed), + TP_PROTO(int nid, struct scan_control *sc, int highest_zoneidx), - TP_ARGS(nid, order, highest_zoneidx, nr_reclaimed), + TP_ARGS(nid, sc, highest_zoneidx), TP_STRUCT__entry( __field(int, nid) @@ -138,9 +137,9 @@ TRACE_EVENT(mm_vmscan_balance_pgdat_end, TP_fast_assign( __entry->nid = nid; - __entry->order = order; + __entry->order = sc->order; __entry->highest_zoneidx = highest_zoneidx; - __entry->nr_reclaimed = nr_reclaimed; + __entry->nr_reclaimed = sc->nr_reclaimed; ), TP_printk("nid=%d order=%d highest_zoneidx=%-8s nr_reclaimed=%lu", diff --git a/mm/vmscan.c b/mm/vmscan.c index 6ec84390ee2a..52d90a32091e 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -7403,8 +7403,7 @@ static int balance_pgdat(pg_data_t *pgdat, int order, int highest_zoneidx) psi_memstall_leave(&pflags); set_task_reclaim_state(current, NULL); - trace_mm_vmscan_balance_pgdat_end(pgdat->node_id, sc.order, - highest_zoneidx, sc.nr_reclaimed); + trace_mm_vmscan_balance_pgdat_end(pgdat->node_id, &sc, highest_zoneidx); /* * Return the order kswapd stopped reclaiming at as -- 2.34.1