mm: hide a #warning for COMPILE_TEST

Web:        https://git.kernel.org/torvalds/c/af27d9403f5b80685b79c88425086edccecaf711
Commit:     af27d9403f5b80685b79c88425086edccecaf711
Parent:     78352f18a4930b9484f85cf787a37134a5b5693a
Refname:    refs/heads/master
Author:     Arnd Bergmann <[email protected]>
AuthorDate: Fri Feb 16 16:25:53 2018 +0100
Committer:  Linus Torvalds <[email protected]>
CommitDate: Fri Feb 16 09:41:36 2018 -0800

    mm: hide a #warning for COMPILE_TEST
    
    We get a warning about some slow configurations in randconfig kernels:
    
      mm/memory.c:83:2: error: #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid. [-Werror=cpp]
    
    The warning is reasonable by itself, but gets in the way of randconfig
    build testing, so I'm hiding it whenever CONFIG_COMPILE_TEST is set.
    
    The warning was added in 2013 in commit 75980e97dacc ("mm: fold
    page->_last_nid into page->flags where possible").
    
    Cc: [email protected]
    Signed-off-by: Arnd Bergmann <[email protected]>
    Signed-off-by: Linus Torvalds <[email protected]>
---
 mm/memory.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/memory.c b/mm/memory.c
index dd8de96f5547..5fcfc24904d1 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -80,7 +80,7 @@
 
 #include "internal.h"
 
-#ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS
+#if defined(LAST_CPUPID_NOT_IN_PAGE_FLAGS) && !defined(CONFIG_COMPILE_TEST)
 #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid.
 #endif
 
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