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authorPeter Xu <peterx@redhat.com>2018-03-22 16:56:30 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2018-03-26 14:37:15 +0200
commit90c558beca0c0ef26db1ed77d1eb8f24a5ea02a1 (patch)
treeb64ac2900be2b1a83ed8ff202ae39d367c7e11ea /iothread.c
parent09c2c6ffda7f8f7c64869bc465c2d1715769ebae (diff)
iothread: fix breakage on windows
OOB can enable iothread for parsing even on Windows. We need some tunes to enable that on Windows otherwise it'll break Windows users. This patch fixes the breakage on Windows with qemu-system-ppc.exe. Reported-by: Howard Spoelstra <hsp.cat7@gmail.com> Tested-by: Howard Spoelstra <hsp.cat7@gmail.com> Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20180322085630.23654-1-peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'iothread.c')
-rw-r--r--iothread.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/iothread.c b/iothread.c
index 1b3463cb00..e675c38442 100644
--- a/iothread.c
+++ b/iothread.c
@@ -31,11 +31,15 @@ typedef ObjectClass IOThreadClass;
#define IOTHREAD_CLASS(klass) \
OBJECT_CLASS_CHECK(IOThreadClass, klass, TYPE_IOTHREAD)
+#ifdef CONFIG_POSIX
/* Benchmark results from 2016 on NVMe SSD drives show max polling times around
* 16-32 microseconds yield IOPS improvements for both iodepth=1 and iodepth=32
* workloads.
*/
#define IOTHREAD_POLL_MAX_NS_DEFAULT 32768ULL
+#else
+#define IOTHREAD_POLL_MAX_NS_DEFAULT 0ULL
+#endif
static __thread IOThread *my_iothread;