| commit | eea7cd3fc5139d7523f3c7a67d9c864b944dfacd | |
| author | Paolo Bonzini <pbonzini@redhat.com> | |
| Wed, 15 Mar 2023 11:34:01 +0000 (15 12:34 +0100) | ||
| committer | Paolo Bonzini <pbonzini@redhat.com> | |
| Thu, 25 May 2023 08:18:33 +0000 (25 10:18 +0200) | ||
| tree | 164f3e6f4bf4d1267c4eb647d2166fe6e3a445c3 | treesnapshot (tar.gz zip) |
| parent | 60f4f62efeb174fe7433ce9ebc37836e70ec9b75 | commitdiff |
monitor: do not use mb_read/mb_set
Instead of relying on magic memory barriers, document the pattern that
is being used. It is the one based on Dekker's algorithm, and in this
case it is embodied as follows:
enqueue request; sleeping = true;
smp_mb(); smp_mb();
if (sleeping) kick(); if (!have a request) yield();
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Instead of relying on magic memory barriers, document the pattern that
is being used. It is the one based on Dekker's algorithm, and in this
case it is embodied as follows:
enqueue request; sleeping = true;
smp_mb(); smp_mb();
if (sleeping) kick(); if (!have a request) yield();
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| monitor/qmp.c | diffblobblamehistory |