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Unverified Commit e426b375 authored by Paul Burton's avatar Paul Burton
Browse files

MIPS: Wire up the restartable sequences (rseq) syscall 



Wire up the restartable sequences (rseq) syscall for MIPS. This was
introduced by commit d7822b1e ("rseq: Introduce restartable
sequences system call") & MIPS now supports the prerequisites.

Signed-off-by: default avatarPaul Burton <paul.burton@mips.com>
Reviewed-by: default avatarJames 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
parent 9bcf5359

arch/mips/include/uapi/asm/unistd.h

+9 −6
Original line number Diff line number Diff line
@@ -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 */

arch/mips/kernel/scall32-o32.S

+1 −0
Original line number Diff line number Diff line
@@ -590,3 +590,4 @@ EXPORT(sys_call_table) 
	PTR	sys_pkey_alloc

	PTR	sys_pkey_free			/* 4365 */

	PTR	sys_statx

	PTR	sys_rseq

arch/mips/kernel/scall64-64.S

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/mips/kernel/scall64-n32.S

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/mips/kernel/scall64-o32.S

+1 −0
Original line number Diff line number Diff line
@@ -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