From: Bruce Cran <bruce.cran@sandisk.com>
Date: Thu, 6 Oct 2016 03:13:54 +0000 (+0000)
Subject: windowsaio: fix completion thread affinitization
X-Git-Tag: fio-2.15~23
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=438bb1cf6c722ab2d83cce926bb94890af58c13a

windowsaio: fix completion thread affinitization

Affinitize the windowsaio completion threads to the same CPUs as the
submission threads.

Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/engines/windowsaio.c b/engines/windowsaio.c
index 0e164b60..f5cb0483 100644
--- a/engines/windowsaio.c
+++ b/engines/windowsaio.c
@@ -113,10 +113,15 @@ static int fio_windowsaio_init(struct thread_data *td)
 
 		if (!rc)
 		{
+			DWORD threadid;
+
 			ctx->iocp = hFile;
 			ctx->wd = wd;
-			wd->iothread = CreateThread(NULL, 0, IoCompletionRoutine, ctx, 0, NULL);
-			if (wd->iothread == NULL)
+			wd->iothread = CreateThread(NULL, 0, IoCompletionRoutine, ctx, 0, &threadid);
+
+			if (wd->iothread != NULL)
+				fio_setaffinity(threadid, td->o.cpumask);
+			else
 				log_err("windowsaio: failed to create io completion thread\n");
 		}