linux-kernel - [PATCH] lib/test_free_pages: Add basic progress indicators

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Date:   Sun, 18 Oct 2020 16:04:45 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Mike Rapoport <rppt@...nel.org>, linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH] lib/test_free_pages: Add basic progress indicators

The test module to check that free_pages() does not leak memory does not
provide any feedback whatsoever its state or progress, but may take some
time on slow machines.  Add the printing of messages upon starting each
phase of the test, and upon completion.

Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
 lib/test_free_pages.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/test_free_pages.c b/lib/test_free_pages.c
index 074e76bd76b2b3c9..25ae1ac2624ae481 100644
--- a/lib/test_free_pages.c
+++ b/lib/test_free_pages.c
@@ -5,6 +5,8 @@
  * Author: Matthew Wilcox <willy@...radead.org>
  */
 
+#define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt
+
 #include <linux/gfp.h>
 #include <linux/mm.h>
 #include <linux/module.h>
@@ -26,8 +28,11 @@ static void test_free_pages(gfp_t gfp)
 
 static int m_in(void)
 {
+	pr_info("Testing with GFP_KERNEL\n");
 	test_free_pages(GFP_KERNEL);
+	pr_info("Testing with GFP_KERNEL | __GFP_COMP\n");
 	test_free_pages(GFP_KERNEL | __GFP_COMP);
+	pr_info("Test completed\n");
 
 	return 0;
 }
-- 
2.17.1