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Revision 0fb9a1abc8c97f858997e962694eb36b4517144e authored by Mathieu Desnoyers on 09 July 2018, 19:51:52 UTC, committed by Thomas Gleixner on 10 July 2018, 20:18:52 UTC 
rseq: uapi: Update uapi comments
 
Update rseq uapi header comments to reflect that user-space need to do
thread-local loads/stores from/to the struct rseq fields.

As a consequence of this added requirement, the kernel does not need
to perform loads/stores with single-copy atomicity.

Update the comment associated to the "flags" fields to describe
more accurately that it's only useful to facilitate single-stepping
through rseq critical sections with debuggers.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-api@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Watson <davejwatson@fb.com>
Cc: Paul Turner <pjt@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Chris Lameter <cl@linux.com>
Cc: Ben Maurer <bmaurer@fb.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20180709195155.7654-4-mathieu.desnoyers@efficios.com
1 parent 8f28177
Raw File
fp_trig.c 
/*

  fp_trig.c: floating-point math routines for the Linux-m68k
  floating point emulator.

  Copyright (c) 1998-1999 David Huggins-Daines / Roman Zippel.

  I hereby give permission, free of charge, to copy, modify, and
  redistribute this software, in source or binary form, provided that
  the above copyright notice and the following disclaimer are included
  in all such copies.

  THIS SOFTWARE IS PROVIDED "AS IS", WITH ABSOLUTELY NO WARRANTY, REAL
  OR IMPLIED.

*/

#include "fp_emu.h"
#include "fp_trig.h"

struct fp_ext *
fp_fsin(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fsin\n");

	fp_monadic_check(dest, src);

	return dest;
}

struct fp_ext *
fp_fcos(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fcos\n");

	fp_monadic_check(dest, src);

	return dest;
}

struct fp_ext *
fp_ftan(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("ftan\n");

	fp_monadic_check(dest, src);

	return dest;
}

struct fp_ext *
fp_fasin(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fasin\n");

	fp_monadic_check(dest, src);

	return dest;
}

struct fp_ext *
fp_facos(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("facos\n");

	fp_monadic_check(dest, src);

	return dest;
}

struct fp_ext *
fp_fatan(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fatan\n");

	fp_monadic_check(dest, src);

	return dest;
}

struct fp_ext *
fp_fsinh(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fsinh\n");

	fp_monadic_check(dest, src);

	return dest;
}

struct fp_ext *
fp_fcosh(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fcosh\n");

	fp_monadic_check(dest, src);

	return dest;
}

struct fp_ext *
fp_ftanh(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("ftanh\n");

	fp_monadic_check(dest, src);

	return dest;
}

struct fp_ext *
fp_fatanh(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fatanh\n");

	fp_monadic_check(dest, src);

	return dest;
}

struct fp_ext *
fp_fsincos0(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fsincos0\n");

	return dest;
}

struct fp_ext *
fp_fsincos1(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fsincos1\n");

	return dest;
}

struct fp_ext *
fp_fsincos2(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fsincos2\n");

	return dest;
}

struct fp_ext *
fp_fsincos3(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fsincos3\n");

	return dest;
}

struct fp_ext *
fp_fsincos4(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fsincos4\n");

	return dest;
}

struct fp_ext *
fp_fsincos5(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fsincos5\n");

	return dest;
}

struct fp_ext *
fp_fsincos6(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fsincos6\n");

	return dest;
}

struct fp_ext *
fp_fsincos7(struct fp_ext *dest, struct fp_ext *src)
{
	uprint("fsincos7\n");

	return dest;
}
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