From 99a5b2878b56d24919eb7e646f2d8e02f63a6efc Mon Sep 17 00:00:00 2001 From: Sonic Zhang Date: Mon, 6 Sep 2010 10:16:04 +0000 Subject: Blackfin: add new cacheflush syscall Flushing caches sometimes requires anomaly workarounds which require supervisor-only insns. Normally we don't need to flush caches from userspace so this isn't a problem, but when gcc generates trampolines on the stack, we do. So add a new syscall for gcc to use modeled after the mips version. Signed-off-by: Sonic Zhang Signed-off-by: Mike Frysinger --- arch/blackfin/kernel/ptrace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/blackfin/kernel/ptrace.c') diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c index d890c1e35ec6..b35839354130 100644 --- a/arch/blackfin/kernel/ptrace.c +++ b/arch/blackfin/kernel/ptrace.c @@ -114,8 +114,8 @@ put_reg(struct task_struct *task, long regno, unsigned long data) /* * check that an address falls within the bounds of the target process's memory mappings */ -static inline int is_user_addr_valid(struct task_struct *child, - unsigned long start, unsigned long len) +int +is_user_addr_valid(struct task_struct *child, unsigned long start, unsigned long len) { struct vm_area_struct *vma; struct sram_list_struct *sraml; -- cgit