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authorPaul Mundt <lethal@linux-sh.org>2009-10-14 14:21:40 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-10-14 15:49:45 +0900
commit4d2947f7c69f812f09ff0e5cdc98dfa5317a4d81 (patch)
treed83a6c87ef83d8cc248809ee6e9a65fb25e92c45 /arch
parenta66c2edea56c291a6f6a52f07496ebb97c0880e8 (diff)
downloadop-kernel-dev-4d2947f7c69f812f09ff0e5cdc98dfa5317a4d81.zip
op-kernel-dev-4d2947f7c69f812f09ff0e5cdc98dfa5317a4d81.tar.gz
sh: Optimize the setup_rt_frame() I-cache flush.
This only needs to flush the return code via the legacy path, and just invalidates uselessly otherwise. This makes the behaviour consistent for all of the trampoline setup paths. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/sh/kernel/signal_32.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index 55d1f81..3db3742 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -472,6 +472,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __put_user(OR_R0_R0, &frame->retcode[6]);
err |= __put_user((__NR_rt_sigreturn), &frame->retcode[7]);
regs->pr = (unsigned long) frame->retcode;
+ flush_icache_range(regs->pr, regs->pr + sizeof(frame->retcode));
}
if (err)
@@ -497,8 +498,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
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_icache_range(regs->pr, regs->pr + sizeof(frame->retcode));
-
return 0;
give_sigsegv:
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