tree 7c9b30c6fefc1ee2a6d484b44fa2a863e54ebe44
parent 549c4e49788bbb16bdac3fb5480a2177019899e2
author Paolo Bonzini <pbonzini@redhat.com> 1426951925 +0100
committer Paolo Bonzini <pbonzini@redhat.com> 1427287030 +0100

rcu tests: fix compilation on 32-bit ppc

32-bit PPC cannot do atomic operations on long long.  Inside the loops,
we are already using local counters that are summed at the end of
the run---with some exceptions (rcu_stress_count for rcutorture,
n_nodes for test-rcu-list): fix them to use the same technique.
For test-rcu-list, remove the mostly unused member "val" from the
list.  Then, use a mutex to protect the global counts.

Performance does not matter there because every thread will only enter
the critical section once.

Remaining uses of atomic instructions are for ints or pointers.

Reported-by: Andreas Faerber <afaerber@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>