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Date: Thu, 14 Jun 2018 16:52:09 -0700
From: Paul Burton <paul.burton@...s.com>
To: <linux-mips@...ux-mips.org>
CC: Peter Zijlstra <peterz@...radead.org>,
James Hogan <jhogan@...nel.org>,
<linux-kernel@...r.kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Boqun Feng <boqun.feng@...il.com>,
"Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
Ralf Baechle <ralf@...ux-mips.org>,
Paul Burton <paul.burton@...s.com>
Subject: [PATCH 3/4] MIPS: Wire up the restartable sequences (rseq) syscall
Wire up the restartable sequences (rseq) syscall for MIPS. This was
introduced by commit d7822b1e24f2 ("rseq: Introduce restartable
sequences system call") & MIPS now supports the prerequisites.
Signed-off-by: Paul Burton <paul.burton@...s.com>
Cc: James Hogan <jhogan@...nel.org>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Boqun Feng <boqun.feng@...il.com>
Cc: linux-mips@...ux-mips.org
Cc: linux-kernel@...r.kernel.org
---
arch/mips/include/uapi/asm/unistd.h | 15 +++++++++------
arch/mips/kernel/scall32-o32.S | 1 +
arch/mips/kernel/scall64-64.S | 1 +
arch/mips/kernel/scall64-n32.S | 1 +
arch/mips/kernel/scall64-o32.S | 1 +
5 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/arch/mips/include/uapi/asm/unistd.h b/arch/mips/include/uapi/asm/unistd.h
index bb05e9916a5f..170bf0b5b250 100644
--- a/arch/mips/include/uapi/asm/unistd.h
+++ b/arch/mips/include/uapi/asm/unistd.h
@@ -388,17 +388,18 @@
#define __NR_pkey_alloc (__NR_Linux + 364)
#define __NR_pkey_free (__NR_Linux + 365)
#define __NR_statx (__NR_Linux + 366)
+#define __NR_rseq (__NR_Linux + 367)
/*
* Offset of the last Linux o32 flavoured syscall
*/
-#define __NR_Linux_syscalls 366
+#define __NR_Linux_syscalls 367
#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
#define __NR_O32_Linux 4000
-#define __NR_O32_Linux_syscalls 366
+#define __NR_O32_Linux_syscalls 367
#if _MIPS_SIM == _MIPS_SIM_ABI64
@@ -733,16 +734,17 @@
#define __NR_pkey_alloc (__NR_Linux + 324)
#define __NR_pkey_free (__NR_Linux + 325)
#define __NR_statx (__NR_Linux + 326)
+#define __NR_rseq (__NR_Linux + 327)
/*
* Offset of the last Linux 64-bit flavoured syscall
*/
-#define __NR_Linux_syscalls 326
+#define __NR_Linux_syscalls 327
#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */
#define __NR_64_Linux 5000
-#define __NR_64_Linux_syscalls 326
+#define __NR_64_Linux_syscalls 327
#if _MIPS_SIM == _MIPS_SIM_NABI32
@@ -1081,15 +1083,16 @@
#define __NR_pkey_alloc (__NR_Linux + 328)
#define __NR_pkey_free (__NR_Linux + 329)
#define __NR_statx (__NR_Linux + 330)
+#define __NR_rseq (__NR_Linux + 331)
/*
* Offset of the last N32 flavoured syscall
*/
-#define __NR_Linux_syscalls 330
+#define __NR_Linux_syscalls 331
#endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
#define __NR_N32_Linux 6000
-#define __NR_N32_Linux_syscalls 330
+#define __NR_N32_Linux_syscalls 331
#endif /* _UAPI_ASM_UNISTD_H */
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index a9a7d78803cd..842ff1612893 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -590,3 +590,4 @@ EXPORT(sys_call_table)
PTR sys_pkey_alloc
PTR sys_pkey_free /* 4365 */
PTR sys_statx
+ PTR sys_rseq
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index 65d5aeeb9bdb..558830d1e5ba 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -439,4 +439,5 @@ EXPORT(sys_call_table)
PTR sys_pkey_alloc
PTR sys_pkey_free /* 5325 */
PTR sys_statx
+ PTR sys_rseq
.size sys_call_table,.-sys_call_table
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index cbf190ef9e8a..293f0b0119f3 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -434,4 +434,5 @@ EXPORT(sysn32_call_table)
PTR sys_pkey_alloc
PTR sys_pkey_free
PTR sys_statx /* 6330 */
+ PTR sys_rseq
.size sysn32_call_table,.-sysn32_call_table
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 9ebe3e2403b1..f13a08de8078 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -583,4 +583,5 @@ EXPORT(sys32_call_table)
PTR sys_pkey_alloc
PTR sys_pkey_free /* 4365 */
PTR sys_statx
+ PTR sys_rseq
.size sys32_call_table,.-sys32_call_table
--
2.17.1
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