From 0fc11e3618bb1f9e0640127ec84f5d2690fa3894 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Fri, 14 Aug 2009 23:58:37 +0900 Subject: [PATCH] sh: unwinder: Convert frame allocations to GFP_ATOMIC. save_stack_trace_tsk() and friends can be called from atomic context (as triggered by latencytop), and subsequently hit two problematic allocation points that were using GFP_KERNEL (these were dwarf_unwind_stack() and dwarf_frame_alloc_regs()). Convert these over to GFP_ATOMIC and get latencytop working with the DWARF unwinder. Signed-off-by: Paul Mundt --- arch/sh/kernel/dwarf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c index 83f3cc9..db02136 100644 --- a/arch/sh/kernel/dwarf.c +++ b/arch/sh/kernel/dwarf.c @@ -57,7 +57,7 @@ static void dwarf_frame_alloc_regs(struct dwarf_frame *frame, if (frame->num_regs >= num_regs) return; - regs = kzalloc(new_size, GFP_KERNEL); + regs = kzalloc(new_size, GFP_ATOMIC); if (!regs) { printk(KERN_WARNING "Unable to allocate DWARF registers\n"); /* @@ -531,7 +531,7 @@ struct dwarf_frame *dwarf_unwind_stack(unsigned long pc, define_ra = true; } - frame = kzalloc(sizeof(*frame), GFP_KERNEL); + frame = kzalloc(sizeof(*frame), GFP_ATOMIC); if (!frame) return NULL; -- 2.7.4