Mathieu Desnoyers 05c17cedf8 x86: Wire up restartable sequence system call ... Wire up the rseq system call on x86 32/64. This provides an ABI improving the speed of a user-space getcpu operation on x86 by removing the need to perform a function call, "lsl" instruction, or system call on the fast path, as well as improving the speed of user-space operations on per-cpu data. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: Joel Fernandes <joelaf@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Watson <davejwatson@fb.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Chris Lameter <cl@linux.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Andrew Hunter <ahh@google.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Paul Turner <pjt@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ben Maurer <bmaurer@fb.com> Cc: linux-api@vger.kernel.org Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20180602124408.8430-8-mathieu.desnoyers@efficios.com		2018-06-06 11:58:32 +02:00
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Makefile	Merge branch 'x86/build' into x86/asm, to fix up conflicts	2017-11-07 10:54:30 +01:00
syscall_32.tbl	x86: Wire up restartable sequence system call	2018-06-06 11:58:32 +02:00
syscall_64.tbl	x86: Wire up restartable sequence system call	2018-06-06 11:58:32 +02:00
syscallhdr.sh	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
syscalltbl.sh	syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*()	2018-04-09 16:47:28 +02:00