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b=FB3cdTRfo3+snO46oMEGmJXEAuozyG8yA+S+kxdnoj/rjSJxeeCwC8n6x4JvSRfEz aSCn5sQzAcOzLMEQ0U5O/oxpOjV/Bc/zTn0BCBuW93O8Ew4QESji7iisuaobP1l6OZ kcmkcnNYQoMmQhkFnqHTqkmH2dCMseIe2uj/RiwU= From: Thomas Ballasi To: tballasi@linux.microsoft.com Cc: akpm@linux-foundation.org, axelrasmussen@google.com, david@kernel.org, hannes@cmpxchg.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, lorenzo.stoakes@oracle.com, mhiramat@kernel.org, mhocko@kernel.org, rostedt@goodmis.org, shakeel.butt@linux.dev, weixugc@google.com, yuanchu@google.com, zhengqi.arch@bytedance.com Subject: [PATCH v8 3/3] mm: vmscan: add PIDs to vmscan tracepoints Date: Mon, 16 Mar 2026 09:09:08 -0700 Message-Id: <20260316160908.42727-4-tballasi@linux.microsoft.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260316160908.42727-1-tballasi@linux.microsoft.com> References: <20260223171544.4750-1-tballasi@linux.microsoft.com> <20260316160908.42727-1-tballasi@linux.microsoft.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 3DDDC1C0002 X-Rspamd-Server: rspam08 X-Stat-Signature: k56u5yetdr4fp5fmh8swnweh5318bzmh X-HE-Tag: 1773677364-845192 X-HE-Meta: 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 Sz+eFBS0 REzqBk8SPt7vY9i/554pPoUQBlg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The changes aims at adding additionnal tracepoints variables to help debuggers attribute them to specific processes. Signed-off-by: Thomas Ballasi --- include/trace/events/vmscan.h | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h index 1212f6a7c223e..645b036572707 100644 --- a/include/trace/events/vmscan.h +++ b/include/trace/events/vmscan.h @@ -130,10 +130,12 @@ DECLARE_EVENT_CLASS(mm_vmscan_direct_reclaim_begin_template, __entry->memcg_id = mem_cgroup_id(memcg); ), - TP_printk("order=%d gfp_flags=%s memcg_id=%llu", + TP_printk("order=%d gfp_flags=%s pid=%d memcg_id=%llu %s", __entry->order, show_gfp_flags(__entry->gfp_flags), - __entry->memcg_id) + __entry->ent.pid, + __entry->memcg_id, + __event_in_irq() ? "(in-irq)" : "") ); DEFINE_EVENT(mm_vmscan_direct_reclaim_begin_template, mm_vmscan_direct_reclaim_begin, @@ -175,9 +177,11 @@ DECLARE_EVENT_CLASS(mm_vmscan_direct_reclaim_end_template, __entry->memcg_id = mem_cgroup_id(memcg); ), - TP_printk("nr_reclaimed=%lu memcg_id=%llu", + TP_printk("nr_reclaimed=%lu pid=%d memcg_id=%llu %s", __entry->nr_reclaimed, - __entry->memcg_id) + __entry->ent.pid, + __entry->memcg_id, + __event_in_irq() ? "(in-irq)" : "") ); DEFINE_EVENT(mm_vmscan_direct_reclaim_end_template, mm_vmscan_direct_reclaim_end, @@ -238,17 +242,19 @@ TRACE_EVENT(mm_shrink_slab_start, __entry->memcg_id = mem_cgroup_id(memcg); ), - TP_printk("%pS %p: nid: %d memcg_id: %llu objects to shrink %ld gfp_flags %s cache items %ld delta %lld total_scan %ld priority %d", + TP_printk("%pS %p: nid: %d pid: %d memcg_id: %llu objects to shrink %ld gfp_flags %s cache items %ld delta %lld total_scan %ld priority %d %s", __entry->shrink, __entry->shr, __entry->nid, + __entry->ent.pid, __entry->memcg_id, __entry->nr_objects_to_shrink, show_gfp_flags(__entry->gfp_flags), __entry->cache_items, __entry->delta, __entry->total_scan, - __entry->priority) + __entry->priority, + __event_in_irq() ? "(in-irq)" : "") ); TRACE_EVENT(mm_shrink_slab_end, @@ -280,15 +286,17 @@ TRACE_EVENT(mm_shrink_slab_end, __entry->memcg_id = mem_cgroup_id(memcg); ), - TP_printk("%pS %p: nid: %d memcg_id: %llu unused scan count %ld new scan count %ld total_scan %ld last shrinker return val %d", + TP_printk("%pS %p: nid: %d pid: %d memcg_id: %llu unused scan count %ld new scan count %ld total_scan %ld last shrinker return val %d %s", __entry->shrink, __entry->shr, __entry->nid, + __entry->ent.pid, __entry->memcg_id, __entry->unused_scan, __entry->new_scan, __entry->total_scan, - __entry->retval) + __entry->retval, + __event_in_irq() ? "(in-irq)" : "") ); TRACE_EVENT(mm_vmscan_lru_isolate, -- 2.45.3