[RFC PATCH v5 06/16] tools/vm/slabinfo: Add defrag_used_ratio output

From: "Tobin C. Harding" <tobin@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>,
	Matthew Wilcox <willy@infradead.org>
Cc: "Tobin C. Harding" <tobin@kernel.org>,
	Roman Gushchin <guro@fb.com>,
	Alexander Viro <viro@ftp.linux.org.uk>,
	Christoph Hellwig <hch@infradead.org>,
	Pekka Enberg <penberg@cs.helsinki.fi>,
	David Rientjes <rientjes@google.com>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Christopher Lameter <cl@linux.com>,
	Miklos Szeredi <mszeredi@redhat.com>,
	Andreas Dilger <adilger@dilger.ca>,
	Waiman Long <longman@redhat.com>, Tycho Andersen <tycho@tycho.ws>,
	Theodore Ts'o <tytso@mit.edu>, Andi Kleen <ak@linux.intel.com>,
	David Chinner <david@fromorbit.com>,
	Nick Piggin <npiggin@gmail.com>, Rik van Riel <riel@redhat.com>,
	Hugh Dickins <hughd@google.com>, Jonathan Corbet <corbet@lwn.net>,
	linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [RFC PATCH v5 06/16] tools/vm/slabinfo: Add defrag_used_ratio output
Date: Mon, 20 May 2019 15:40:07 +1000	[thread overview]
Message-ID: <20190520054017.32299-7-tobin@kernel.org> (raw)
In-Reply-To: <20190520054017.32299-1-tobin@kernel.org>

Add output for the newly added defrag_used_ratio sysfs knob.

Signed-off-by: Tobin C. Harding <tobin@kernel.org>
---
 tools/vm/slabinfo.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/vm/slabinfo.c b/tools/vm/slabinfo.c
index d2c22f9ee2d8..ef4ff93df4cc 100644
--- a/tools/vm/slabinfo.c
+++ b/tools/vm/slabinfo.c
@@ -34,6 +34,7 @@ struct slabinfo {
 	unsigned int sanity_checks, slab_size, store_user, trace;
 	int order, poison, reclaim_account, red_zone;
 	int movable, ctor;
+	int defrag_used_ratio;
 	int remote_node_defrag_ratio;
 	unsigned long partial, objects, slabs, objects_partial, objects_total;
 	unsigned long alloc_fastpath, alloc_slowpath;
@@ -549,6 +550,8 @@ static void report(struct slabinfo *s)
 		printf("** Slabs are destroyed via RCU\n");
 	if (s->reclaim_account)
 		printf("** Reclaim accounting active\n");
+	if (s->movable)
+		printf("** Defragmentation at %d%%\n", s->defrag_used_ratio);
 
 	printf("\nSizes (bytes)     Slabs              Debug                Memory\n");
 	printf("------------------------------------------------------------------------\n");
@@ -1279,6 +1282,7 @@ static void read_slab_dir(void)
 			slab->deactivate_bypass = get_obj("deactivate_bypass");
 			slab->remote_node_defrag_ratio =
 					get_obj("remote_node_defrag_ratio");
+			slab->defrag_used_ratio = get_obj("defrag_used_ratio");
 			chdir("..");
 			if (read_slab_obj(slab, "ops")) {
 				if (strstr(buffer, "ctor :"))
-- 
2.21.0

