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MIPS: Wire up the restartable sequences (rseq) syscall

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Wire up the restartable sequences (rseq) syscall for MIPS. This was
introduced by commit d7822b1e24 ("rseq: Introduce restartable
sequences system call") & MIPS now supports the prerequisites.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Reviewed-by: James Hogan <jhogan@kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/19525/
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
This commit is contained in:
Paul Burton 2018-06-14 10:22:44 -07:00
parent 9bcf53598d
commit e426b3754a
No known key found for this signature in database
GPG key ID: 3EA79FACB57500DD
5 changed files with 13 additions and 6 deletions
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15
arch/mips/include/uapi/asm/unistd.h
View file

@ -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 */

1
arch/mips/kernel/scall32-o32.S
View file

@ -590,3 +590,4 @@ EXPORT(sys_call_table)
PTR sys_pkey_alloc
PTR sys_pkey_free /* 4365 */
PTR sys_statx
PTR sys_rseq

1
arch/mips/kernel/scall64-64.S
View file

@ -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

1
arch/mips/kernel/scall64-n32.S
View file

@ -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

1
arch/mips/kernel/scall64-o32.S
View file

@ -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