linux-kernel - [PATCH RCFv2 5/7] mm/memory_hotplug: print only with DEBUG_VM in offline

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Date:   Mon, 30 Apr 2018 11:42:34 +0200
From:   David Hildenbrand <david@...hat.com>
To:     linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org, David Hildenbrand <david@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Dan Williams <dan.j.williams@...el.com>,
        Reza Arbab <arbab@...ux.vnet.ibm.com>,
        Pavel Tatashin <pasha.tatashin@...cle.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH RCFv2 5/7] mm/memory_hotplug: print only with DEBUG_VM in offline_pages()

Let's try to minimze the noise.

Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Michal Hocko <mhocko@...e.com>
Cc: Vlastimil Babka <vbabka@...e.cz>
Cc: Dan Williams <dan.j.williams@...el.com>
Cc: Reza Arbab <arbab@...ux.vnet.ibm.com>
Cc: Pavel Tatashin <pasha.tatashin@...cle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: David Hildenbrand <david@...hat.com>
---
 mm/memory_hotplug.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 4c7e0efff079..d8f127754c2e 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1685,7 +1685,9 @@ static int __ref __offline_pages(unsigned long start_pfn,
 	offlined_pages = check_pages_isolated(start_pfn, end_pfn);
 	if (offlined_pages < 0)
 		goto repeat;
+#ifdef CONFIG_DEBUG_VM
 	pr_info("Offlined Pages %ld\n", offlined_pages);
+#endif
 	/* Ok, all of our target is isolated.
 	   We cannot do rollback at this point. */
 	offline_isolated_pages(start_pfn, end_pfn);
@@ -1720,9 +1722,11 @@ static int __ref __offline_pages(unsigned long start_pfn,
 	return 0;
 
 failed_removal:
+#ifdef CONFIG_DEBUG_VM
 	pr_debug("memory offlining [mem %#010llx-%#010llx] failed\n",
 		 (unsigned long long) start_pfn << PAGE_SHIFT,
 		 ((unsigned long long) end_pfn << PAGE_SHIFT) - 1);
+#endif
 	memory_notify(MEM_CANCEL_OFFLINE, &arg);
 	/* pushback to free area */
 	undo_isolate_page_range(start_pfn, end_pfn, MIGRATE_MOVABLE);
-- 
2.14.3