From ef2a5153b4d2c48c05b9280491cb5592a46df385 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 14 Apr 2015 15:44:22 -0700 Subject: mm/migrate: mark unmap_and_move() "noinline" to avoid ICE in gcc 4.7.3 With gcc version 4.7.3 (Ubuntu/Linaro 4.7.3-12ubuntu1) : mm/migrate.c: In function `migrate_pages': mm/migrate.c:1148:1: internal compiler error: in push_minipool_fix, at config/arm/arm.c:13500 Please submit a full bug report, with preprocessed source if appropriate. See for instructions. Preprocessed source stored into /tmp/ccPoM1tr.out file, please attach this to your bugreport. make[1]: *** [mm/migrate.o] Error 1 make: *** [mm/migrate.o] Error 2 Mark unmap_and_move() (which is used in a single place only) "noinline" to work around this compiler bug. [akpm@linux-foundation.org: make it conditional on gcc-4.7.3 and arm] [khilman@kernel.org: fine-tune compiler versions] [akpm@linux-foundation.org: fix comment] Signed-off-by: Geert Uytterhoeven Reported-by: Kevin Hilman Cc: Marc Zyngier Tested-by: Kevin Hilman Tested-by: Lina Iyer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/migrate.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index 85e042686031..ec1802d85f05 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -900,13 +900,24 @@ out: return rc; } +/* + * gcc 4.7 and 4.8 on arm get an ICEs when inlining unmap_and_move(). Work + * around it. + */ +#if (GCC_VERSION >= 40700 && GCC_VERSION < 40900) && defined(CONFIG_ARM) +#define ICE_noinline noinline +#else +#define ICE_noinline +#endif + /* * Obtain the lock on page, remove all ptes and migrate the page * to the newly allocated page in newpage. */ -static int unmap_and_move(new_page_t get_new_page, free_page_t put_new_page, - unsigned long private, struct page *page, int force, - enum migrate_mode mode) +static ICE_noinline int unmap_and_move(new_page_t get_new_page, + free_page_t put_new_page, + unsigned long private, struct page *page, + int force, enum migrate_mode mode) { int rc = 0; int *result = NULL; -- cgit v1.2.3-59-g8ed1b