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authorPaul Burton <paul.burton@mips.com>2018-06-14 10:13:53 -0700
committerPaul Burton <paul.burton@mips.com>2018-06-19 21:13:17 -0700
commit9ea141ad54716d48e79d0093052c12ed67debf09 (patch)
treed6b3b439562aaf1d21303078623f7e05793a9b02 /arch/mips/Kconfig
parent18f3e95b90b28318ef35910d21c39908de672331 (diff)
downloadlinux-9ea141ad54716d48e79d0093052c12ed67debf09.tar.bz2
MIPS: Add support for restartable sequences
Implement support for restartable sequences on MIPS, which requires 3 simple things: - Call rseq_handle_notify_resume() on return to userspace if TIF_NOTIFY_RESUME is set. - Call rseq_signal_deliver() to fixup the pre-signal stack frame when a signal is delivered whilst executing a restartable sequence critical section. - Select CONFIG_HAVE_RSEQ. Signed-off-by: Paul Burton <paul.burton@mips.com> Reviewed-by: James Hogan <jhogan@kernel.org> Patchwork: https://patchwork.linux-mips.org/patch/19523/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org
Diffstat (limited to 'arch/mips/Kconfig')
-rw-r--r--arch/mips/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 3f9deec70b92..08c10c518f83 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -65,6 +65,7 @@ config MIPS
select HAVE_OPROFILE
select HAVE_PERF_EVENTS
select HAVE_REGS_AND_STACK_ACCESS_API
+ select HAVE_RSEQ
select HAVE_STACKPROTECTOR
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP