diff options
| author | Chris Metcalf <cmetcalf@ezchip.com> | 2015-12-23 17:13:04 -0500 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@ezchip.com> | 2016-01-18 14:49:30 -0500 |
| commit | 1bb50cad45f4a3fb9a339006d76efc50f70eed5b (patch) | |
| tree | 91e00be5d5852acdb7c5c9ba9707b9f7926e6bc6 /arch/tile/kernel/unaligned.c | |
| parent | 9ce815ed50bbc518526106071f395deacaf94ad7 (diff) | |
arch/tile: move user_exit() to early kernel entry sequence
This ensures that we always notify context tracking that we
have exited from user space no matter how we enter the kernel.
It is similar to how arm64 handles context tracking, for example.
This allows the removal of all the exception_enter() calls that
were added in commit 49e4e15619cd ("tile: support CONTEXT_TRACKING and
thus NOHZ_FULL").
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Diffstat (limited to 'arch/tile/kernel/unaligned.c')
| -rw-r--r-- | arch/tile/kernel/unaligned.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/tile/kernel/unaligned.c b/arch/tile/kernel/unaligned.c index d075f92ccee0..0db5f7c9d9e5 100644 --- a/arch/tile/kernel/unaligned.c +++ b/arch/tile/kernel/unaligned.c @@ -25,7 +25,6 @@ #include <linux/module.h> #include <linux/compat.h> #include <linux/prctl.h> -#include <linux/context_tracking.h> #include <asm/cacheflush.h> #include <asm/traps.h> #include <asm/uaccess.h> @@ -1449,7 +1448,6 @@ void jit_bundle_gen(struct pt_regs *regs, tilegx_bundle_bits bundle, void do_unaligned(struct pt_regs *regs, int vecnum) { - enum ctx_state prev_state = exception_enter(); tilegx_bundle_bits __user *pc; tilegx_bundle_bits bundle; struct thread_info *info = current_thread_info(); @@ -1503,7 +1501,7 @@ void do_unaligned(struct pt_regs *regs, int vecnum) *((tilegx_bundle_bits *)(regs->pc))); jit_bundle_gen(regs, bundle, align_ctl); } - goto done; + return; } /* @@ -1527,7 +1525,7 @@ void do_unaligned(struct pt_regs *regs, int vecnum) trace_unhandled_signal("unaligned fixup trap", regs, 0, SIGBUS); force_sig_info(info.si_signo, &info, current); - goto done; + return; } @@ -1544,7 +1542,7 @@ void do_unaligned(struct pt_regs *regs, int vecnum) trace_unhandled_signal("segfault in unalign fixup", regs, (unsigned long)info.si_addr, SIGSEGV); force_sig_info(info.si_signo, &info, current); - goto done; + return; } if (!info->unalign_jit_base) { @@ -1579,7 +1577,7 @@ void do_unaligned(struct pt_regs *regs, int vecnum) if (IS_ERR((void __force *)user_page)) { pr_err("Out of kernel pages trying do_mmap\n"); - goto done; + return; } /* Save the address in the thread_info struct */ @@ -1592,9 +1590,6 @@ void do_unaligned(struct pt_regs *regs, int vecnum) /* Generate unalign JIT */ jit_bundle_gen(regs, GX_INSN_BSWAP(bundle), align_ctl); - -done: - exception_exit(prev_state); } #endif /* __tilegx__ */ |