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sh: Optimized flush_icache_range() implementation.

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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>
This commit is contained in:
Chris Smith
2008-07-02 15:17:11 +09:00
committed by Paul Mundt
parent 3611ee7acc
commit 09b5a10c19
3 changed files with 34 additions and 36 deletions
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10
arch/sh/kernel/signal_32.c
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@@ -398,10 +398,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
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 @@ 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_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;