linux-kernel - [PATCH] dmatest: add ability to disable pq and xor

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Date:	Fri, 17 May 2013 10:54:03 -0700
From:	Jon Mason <jon.mason@...el.com>
To:	Dan Williams <djbw@...com>
Cc:	linux-kernel@...r.kernel.org, Dave Jiang <dave.jiang@...el.com>,
	Vinod Koul <vinod.koul@...el.com>
Subject: [PATCH] dmatest: add ability to disable pq and xor

dmatest would create a thread to stress XOR and PQ, if the capability is
present in the hardware.  Add the ability to disable XOR and PQ by
disabling it if *_sources are set to zero.

Signed-off-by: Jon Mason <jon.mason@...el.com>
---
 drivers/dma/dmatest.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index d8ce4ec..7de610d 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -904,11 +904,11 @@ static int dmatest_add_channel(struct dmatest_info *info,
 		cnt = dmatest_add_threads(info, dtc, DMA_MEMCPY);
 		thread_count += cnt > 0 ? cnt : 0;
 	}
-	if (dma_has_cap(DMA_XOR, dma_dev->cap_mask)) {
+	if (dma_has_cap(DMA_XOR, dma_dev->cap_mask) && xor_sources) {
 		cnt = dmatest_add_threads(info, dtc, DMA_XOR);
 		thread_count += cnt > 0 ? cnt : 0;
 	}
-	if (dma_has_cap(DMA_PQ, dma_dev->cap_mask)) {
+	if (dma_has_cap(DMA_PQ, dma_dev->cap_mask) && pq_sources) {
 		cnt = dmatest_add_threads(info, dtc, DMA_PQ);
 		thread_count += cnt > 0 ? cnt : 0;
 	}
-- 
1.7.9.5

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