sh: Optimized flush_icache_range() implementation.
Add implementation of flush_icache_range() suitable for signal handler
and kprobes. Remove flush_cache_sigtramp() and change signal.c to use
flush_icache_range().
Signed-off-by: Chris Smith <chris.smith@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index 46170a9..eee2925 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -398,10 +398,7 @@
pr_debug("SIG deliver (%s:%d): sp=%p pc=%08lx pr=%08lx\n",
current->comm, task_pid_nr(current), frame, regs->pc, regs->pr);
- flush_cache_sigtramp(regs->pr);
-
- if ((-regs->pr & (L1_CACHE_BYTES-1)) < sizeof(frame->retcode))
- flush_cache_sigtramp(regs->pr + L1_CACHE_BYTES);
+ flush_icache_range(regs->pr, regs->pr + sizeof(frame->retcode));
return 0;
@@ -486,10 +483,7 @@
pr_debug("SIG deliver (%s:%d): sp=%p pc=%08lx pr=%08lx\n",
current->comm, task_pid_nr(current), frame, regs->pc, regs->pr);
- flush_cache_sigtramp(regs->pr);
-
- if ((-regs->pr & (L1_CACHE_BYTES-1)) < sizeof(frame->retcode))
- flush_cache_sigtramp(regs->pr + L1_CACHE_BYTES);
+ flush_icache_range(regs->pr, regs->pr + sizeof(frame->retcode));
return 0;