linux-kernel - [RESEND RFC PATCH v1 14/20] mm: expose ksm merge type in ksm

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Message-Id: <20230123173748.1734238-15-shr@devkernel.io>
Date:   Mon, 23 Jan 2023 09:37:42 -0800
From:   Stefan Roesch <shr@...kernel.io>
To:     linux-mm@...ck.org
Cc:     shr@...kernel.io, linux-doc@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-trace-kernel@...r.kernel.org
Subject: [RESEND RFC PATCH v1 14/20] mm: expose ksm merge type in ksm_stat

This exposes the ksm process type in /proc/<pid>/ksm_stat. The name of
the value is ksm_merge_type.

Signed-off-by: Stefan Roesch <shr@...kernel.io>
---
 fs/proc/base.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/proc/base.c b/fs/proc/base.c
index a2b7779f76f6..2b63a70fb7a6 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -3200,6 +3200,7 @@ static int proc_pid_ksm_merging_pages(struct seq_file *m, struct pid_namespace *
 
 	return 0;
 }
+
 static int proc_pid_ksm_stat(struct seq_file *m, struct pid_namespace *ns,
 				struct pid *pid, struct task_struct *task)
 {
@@ -3209,6 +3210,7 @@ static int proc_pid_ksm_stat(struct seq_file *m, struct pid_namespace *ns,
 	if (mm) {
 		seq_printf(m, "ksm_rmap_items %lu\n", mm->ksm_rmap_items);
 		seq_printf(m, "ksm_merging_pages %lu\n", mm->ksm_merging_pages);
+		seq_printf(m, "ksm_merge_type %s\n", ksm_merge_type(mm));
 		seq_printf(m, "ksm_process_profit %ld\n", ksm_process_profit(mm));
 		mmput(mm);
 	}
-- 
2.30.2