From: Mike Rapoport <rppt@kernel.org>
To: linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Mike Rapoport <rppt@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Song Liu <song@kernel.org>, Thomas Gleixner <tglx@linutronix.de>,
Vlastimil Babka <vbabka@suse.cz>,
linux-kernel@vger.kernel.org, x86@kernel.org
Subject: [RFC PATCH 2/5] mm/unmapped_alloc: add debugfs file similar to /proc/pagetypeinfo
Date: Wed, 8 Mar 2023 11:41:03 +0200 [thread overview]
Message-ID: <20230308094106.227365-3-rppt@kernel.org> (raw)
In-Reply-To: <20230308094106.227365-1-rppt@kernel.org>
From: "Mike Rapoport (IBM)" <rppt@kernel.org>
Present statistics about unmapped_alloc in debugfs
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
---
mm/unmapped-alloc.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/mm/unmapped-alloc.c b/mm/unmapped-alloc.c
index fb2d54204a3c..f74640e9ce9f 100644
--- a/mm/unmapped-alloc.c
+++ b/mm/unmapped-alloc.c
@@ -3,6 +3,7 @@
#include <linux/gfp.h>
#include <linux/mmzone.h>
#include <linux/printk.h>
+#include <linux/debugfs.h>
#include <linux/spinlock.h>
#include <linux/set_memory.h>
@@ -213,3 +214,37 @@ int unmapped_alloc_init(void)
return 0;
}
+
+static int unmapped_alloc_debug_show(struct seq_file *m, void *private)
+{
+ int order;
+
+ seq_printf(m, "MAX_ORDER: %d\n", MAX_ORDER);
+ seq_putc(m, '\n');
+
+ seq_printf(m, "%-10s", "Order:");
+ for (order = 0; order < MAX_ORDER; ++order)
+ seq_printf(m, "%5d ", order);
+ seq_putc(m, '\n');
+
+ seq_printf(m, "%-10s", "Free:");
+ for (order = 0; order < MAX_ORDER; ++order)
+ seq_printf(m, "%5lu ", free_area[order].nr_free);
+ seq_putc(m, '\n');
+
+ seq_printf(m, "%-10s", "Cached:");
+ for (order = 0; order < MAX_ORDER; ++order)
+ seq_printf(m, "%5lu ", free_area[order].nr_cached);
+ seq_putc(m, '\n');
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(unmapped_alloc_debug);
+
+static int __init unmapped_alloc_init_late(void)
+{
+ debugfs_create_file("unmapped_alloc", 0444, NULL,
+ NULL, &unmapped_alloc_debug_fops);
+ return 0;
+}
+late_initcall(unmapped_alloc_init_late);
--
2.35.1
next prev parent reply other threads:[~2023-03-08 9:41 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-08 9:41 [RFC PATCH 0/5] Prototype for direct map awareness in page allocator Mike Rapoport
2023-03-08 9:41 ` [RFC PATCH 1/5] mm: intorduce __GFP_UNMAPPED and unmapped_alloc() Mike Rapoport
2023-03-09 1:56 ` Edgecombe, Rick P
2023-03-09 14:39 ` Mike Rapoport
2023-03-09 15:34 ` Edgecombe, Rick P
2023-03-09 6:31 ` Hyeonggon Yoo
2023-03-09 15:27 ` Mike Rapoport
2023-03-24 8:37 ` Michal Hocko
2023-03-25 6:38 ` Mike Rapoport
2023-03-27 13:43 ` Michal Hocko
2023-03-27 14:31 ` Vlastimil Babka
2023-03-27 15:10 ` Michal Hocko
2023-03-28 6:25 ` Mike Rapoport
2023-03-28 7:39 ` Michal Hocko
2023-03-28 15:11 ` Mike Rapoport
2023-03-28 15:24 ` Michal Hocko
2023-03-29 7:28 ` Mike Rapoport
2023-03-29 8:13 ` Michal Hocko
2023-03-30 5:13 ` Mike Rapoport
2023-03-30 8:11 ` Michal Hocko
2023-03-28 17:18 ` Luis Chamberlain
2023-03-28 17:37 ` Matthew Wilcox
2023-03-28 17:52 ` Luis Chamberlain
2023-03-28 17:55 ` Luis Chamberlain
2023-05-18 3:35 ` Kent Overstreet
2023-05-18 15:23 ` Mike Rapoport
2023-05-18 16:33 ` Song Liu
2023-05-18 16:48 ` Kent Overstreet
2023-05-18 17:00 ` Song Liu
2023-05-18 17:23 ` Kent Overstreet
2023-05-18 18:47 ` Song Liu
2023-05-18 19:03 ` Song Liu
2023-05-18 19:15 ` Kent Overstreet
2023-05-18 20:03 ` Song Liu
2023-05-18 20:13 ` Kent Overstreet
2023-05-18 20:51 ` Song Liu
2023-05-19 1:24 ` Kent Overstreet
2023-05-19 15:08 ` Song Liu
2023-05-18 19:16 ` Kent Overstreet
2023-05-19 8:29 ` Mike Rapoport
2023-05-19 15:42 ` Song Liu
2023-05-22 22:05 ` Thomas Gleixner
2023-05-19 15:47 ` Kent Overstreet
2023-05-19 16:14 ` Mike Rapoport
2023-05-19 16:21 ` Kent Overstreet
2023-05-18 16:58 ` Kent Overstreet
2023-05-18 17:15 ` Song Liu
2023-05-18 17:25 ` Kent Overstreet
2023-05-18 18:54 ` Song Liu
2023-05-18 19:01 ` Song Liu
2023-05-18 19:10 ` Kent Overstreet
2023-03-08 9:41 ` Mike Rapoport [this message]
2023-03-08 9:41 ` [RFC PATCH 3/5] mm/unmapped_alloc: add shrinker Mike Rapoport
2023-03-08 9:41 ` [RFC PATCH 4/5] EXPERIMENTAL: x86: use __GFP_UNMAPPED for modele_alloc() Mike Rapoport
2023-03-09 1:54 ` Edgecombe, Rick P
2023-03-08 9:41 ` [RFC PATCH 5/5] EXPERIMENTAL: mm/secretmem: use __GFP_UNMAPPED Mike Rapoport
2023-03-09 1:59 ` [RFC PATCH 0/5] Prototype for direct map awareness in page allocator Edgecombe, Rick P
2023-03-09 15:14 ` Mike Rapoport
2023-05-19 15:40 ` Sean Christopherson
2023-05-19 16:24 ` Mike Rapoport
2023-05-19 18:25 ` Sean Christopherson
2023-05-25 20:37 ` Mike Rapoport
2023-03-10 7:27 ` Christoph Hellwig
2023-03-27 14:27 ` Mike Rapoport
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