From: Timur Tabi Date: Mon, 14 Apr 2008 15:43:38 +0000 (-0500) Subject: [POWERPC] Make rheap safe for spinlocks X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3a2f020c5a93a88aa09adbe56dde43463324930a;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [POWERPC] Make rheap safe for spinlocks The rheap allocation function, rh_alloc, could call kmalloc with GFP_KERNEL. This can sleep, which means you couldn't hold a spinlock while called rh_alloc. Change all kmalloc calls to use GFP_ATOMIC so that it won't sleep. This is safe because only small blocks are allocated. Signed-off-by: Timur Tabi Signed-off-by: Kumar Gala --- diff --git a/arch/powerpc/lib/rheap.c b/arch/powerpc/lib/rheap.c index 22c3b4f53de7..29b2941cada0 100644 --- a/arch/powerpc/lib/rheap.c +++ b/arch/powerpc/lib/rheap.c @@ -54,7 +54,7 @@ static int grow(rh_info_t * info, int max_blocks) new_blocks = max_blocks - info->max_blocks; - block = kmalloc(sizeof(rh_block_t) * max_blocks, GFP_KERNEL); + block = kmalloc(sizeof(rh_block_t) * max_blocks, GFP_ATOMIC); if (block == NULL) return -ENOMEM; @@ -258,7 +258,7 @@ rh_info_t *rh_create(unsigned int alignment) if ((alignment & (alignment - 1)) != 0) return ERR_PTR(-EINVAL); - info = kmalloc(sizeof(*info), GFP_KERNEL); + info = kmalloc(sizeof(*info), GFP_ATOMIC); if (info == NULL) return ERR_PTR(-ENOMEM);