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3 commits

Author SHA1 Message Date
Anton Ivanov
dd3035a21b um: add a UML specific futex implementation 
The generic asm futex implementation emulates atomic access to
memory by doing a get_user followed by put_user. These translate
to two mapping operations on UML with paging enabled in the
meantime. This, in turn may end up changing interrupts,
invoking the signal loop, etc.

This replaces the generic implementation by a mapping followed
by an operation on the mapped segment.

Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
 2021-06-17 22:01:45 +02:00
Al Viro
f5e900770f um: switch to generic-y 
kill wrapper headers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
 2011-11-02 14:15:30 +01:00
Al Viro
8ede0bdb63 x86, um: initial part of asm-um move 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2008-10-22 22:55:19 -07:00
Renamed from include/asm-um/futex.h (Browse further)