From c019894efc9c9ba5939948caa78c133b1ec8ae63 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Sun, 28 Jun 2009 09:26:21 -0700 Subject: drivers/dma: Remove unnecessary semicolons Signed-off-by: Joe Perches Signed-off-by: Dan Williams --- drivers/dma/dmatest.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/dma/dmatest.c') diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index fb7da5141e96..cec1ec0b7d00 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -114,7 +114,7 @@ static void dmatest_init_srcs(u8 **bufs, unsigned int start, unsigned int len) buf[i] = PATTERN_SRC | (~i & PATTERN_COUNT_MASK); for ( ; i < start + len; i++) buf[i] = PATTERN_SRC | PATTERN_COPY - | (~i & PATTERN_COUNT_MASK);; + | (~i & PATTERN_COUNT_MASK); for ( ; i < test_buf_size; i++) buf[i] = PATTERN_SRC | (~i & PATTERN_COUNT_MASK); buf++; -- cgit v1.2.3 From 0a2ff57d6fba92842272889b4bca447344cd9d36 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Fri, 3 Jul 2009 19:26:51 +0200 Subject: dmaengine: dmatest: add a maximum number of test iterations The dmatest usually waits for the killing of its kthreads to stop running tests. This patch adds a parameter that sets a maximum number of test iterations. This feature is quite interesting for debugging when you set a lot of traces in your dmaengine controller driver. Signed-off-by: Nicolas Ferre Cc: Haavard Skinnemoen Acked-by: Maciej Sosnowski Signed-off-by: Andrew Morton Signed-off-by: Dan Williams --- drivers/dma/dmatest.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'drivers/dma/dmatest.c') diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index cec1ec0b7d00..2d973d60e7b9 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -38,6 +38,11 @@ module_param(max_channels, uint, S_IRUGO); MODULE_PARM_DESC(max_channels, "Maximum number of channels to use (default: all)"); +static unsigned int iterations; +module_param(iterations, uint, S_IRUGO); +MODULE_PARM_DESC(iterations, + "Iterations before stopping test (default: infinite)"); + static unsigned int xor_sources = 3; module_param(xor_sources, uint, S_IRUGO); MODULE_PARM_DESC(xor_sources, @@ -270,7 +275,8 @@ static int dmatest_func(void *data) flags = DMA_CTRL_ACK | DMA_COMPL_SKIP_DEST_UNMAP | DMA_PREP_INTERRUPT; - while (!kthread_should_stop()) { + while (!kthread_should_stop() + && !(iterations && total_tests >= iterations)) { struct dma_device *dev = chan->device; struct dma_async_tx_descriptor *tx = NULL; dma_addr_t dma_srcs[src_cnt]; @@ -416,6 +422,13 @@ err_srcbuf: err_srcs: pr_notice("%s: terminating after %u tests, %u failures (status %d)\n", thread_name, total_tests, failed_tests, ret); + + if (iterations > 0) + while (!kthread_should_stop()) { + DECLARE_WAIT_QUEUE_HEAD(wait_dmatest_exit); + interruptible_sleep_on(&wait_dmatest_exit); + } + return ret; } -- cgit v1.2.3 From f1aef8b6e6abf32a3a269542f95a19e2cb319f6c Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Mon, 6 Jul 2009 18:19:44 +0200 Subject: dmaengine: dmatest: correct thread_count while using multiple thread per channel It seems that thread_count is not properly calculated in dmatest. In fact the thread count number that is returned from dmatest_add_threads() is not correctly added to the thread_count and thus not properly printed. Signed-off-by: Nicolas Ferre Acked-by: Haavard Skinnemoen Acked-by: Maciej Sosnowski Signed-off-by: Andrew Morton Signed-off-by: Dan Williams --- drivers/dma/dmatest.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/dma/dmatest.c') diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index 2d973d60e7b9..d93017fc7872 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -508,11 +508,11 @@ static int dmatest_add_channel(struct dma_chan *chan) if (dma_has_cap(DMA_MEMCPY, dma_dev->cap_mask)) { cnt = dmatest_add_threads(dtc, DMA_MEMCPY); - thread_count += cnt > 0 ?: 0; + thread_count += cnt > 0 ? cnt : 0; } if (dma_has_cap(DMA_XOR, dma_dev->cap_mask)) { cnt = dmatest_add_threads(dtc, DMA_XOR); - thread_count += cnt > 0 ?: 0; + thread_count += cnt > 0 ? cnt : 0; } pr_info("dmatest: Started %u threads using %s\n", -- cgit v1.2.3