From: Jeff Dike <jdike@addtoit.com>
Date: Tue, 6 Mar 2007 09:42:19 +0000 (-0800)
Subject: [PATCH] uml: add a debugging message
X-Git-Tag: v2.6.21-rc3~30
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b4cf95c69a72baf90b8f275294a3ff3d282ffe09;p=linux-2.6

[PATCH] uml: add a debugging message

Add a debugging message in the case that mapping a stub fails.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 9b34fe6594..dda06789bc 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -419,9 +419,12 @@ void map_stub_pages(int fd, unsigned long code,
 					  .offset  = code_offset
 	} } });
 	n = os_write_file(fd, &mmop, sizeof(mmop));
-	if(n != sizeof(mmop))
+	if(n != sizeof(mmop)){
+		printk("mmap args - addr = 0x%lx, fd = %d, offset = %llx\n",
+		       code, code_fd, (unsigned long long) code_offset);
 		panic("map_stub_pages : /proc/mm map for code failed, "
 		      "err = %d\n", -n);
+	}
 
 	if ( stack ) {
 		__u64 map_offset;