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6 Commits

Author SHA1 Message Date
Dominique Martinet
3e3ccf377c compiler.h: add READ_ONCE/WRITE_ONCE macro 
These macros are needed to make sure the compiler does not optimize away
atomic constructs such as "while (!READ_ONCE(foo))" loops that do not
modify foo within the loop

Also move the barrier() define where it belongs while we are here, it is
needed for READ_ONCE/WRITE_ONCE and including ihk/cpu.h here causes
include loops

Change-Id: Ia533a849ed674719ccbc0495be47d22a3c47b8f8
 2018-10-11 08:54:13 +00:00
Masamichi Takagi
b080e0f301 spinlock: Add trylock 
Change-Id: If349d7c0065609615f5df229f70c59f92bf97adf
 2018-09-04 19:51:10 +09:00
Balazs Gerofi
ff383d96ba spinlock: rewrite spinlock to use Linux ticket head/tail format 
This is a cherry-pick of 2964302d094f035242d6257d8af5450f72f9b5a7.

Change-Id: Ie8b7e825b28415dd41cc232fbeceb4653251f9e3
 2018-09-04 19:51:10 +09:00
Dominique Martinet
ad2cb6375a kprintf: only call eventfd() if it is safe to interrupt 
Missing ARM64 implementation, cannot test right now

Change-Id: Ia05e8b7952b19bcd8fdac1f920d9bfe341be8b97
 2018-07-26 04:57:30 +00:00
Balazs Gerofi
249bda4aef fileobj: use MCS locks for per-file page hash 2018-05-14 17:46:52 +09:00
Balazs Gerofi
43ecf06e83 arch: x86 -> x86_64 and build system changes 2017-10-18 09:20:52 +09:00