From: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Date: Thu, 7 Mar 2019 02:18:21 +0000 (+0900)
Subject: LOCAL / mm, page_alloc: Add print page allocation failure reason
X-Git-Tag: submit/tizen/20220208.074352~262
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ead190256e2cf28270d3c6581c01ed2ce9adfa0d;p=platform%2Fkernel%2Flinux-rpi.git

LOCAL / mm, page_alloc: Add print page allocation failure reason

There is an unclear problem when page alloc failed. So clearly print
the cause of the failure.

Change-Id: Ie59e1d4e34deabb8733268edfb433754f43766a8
Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
---

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8446d59..ab8d728 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -8437,6 +8437,9 @@ static int __alloc_contig_migrate_range(struct compact_control *cc,
 
 	while (pfn < end || !list_empty(&cc->migratepages)) {
 		if (fatal_signal_pending(current)) {
+			pr_err("Fatal signal pending task: %s(%d), %#lx\n",
+				current->comm, current->pid,
+				current->pending.signal.sig[0]);
 			ret = -EINTR;
 			break;
 		}