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dmaengine: dmatest: add norandom option 

Existing option noverify disables both random src/dst address offset
setup and data verification. Sometimes, we need to control random
src/dst address setup and verification separately, such as disabling
random to make sure that test covers addresses in all interleaving
banks, but data verification is still performed.

This patch adds option norandom to disable random offset setup. Option
noverify has been changed to disable data verification only.

Cc: Joey Zheng <yu.zheng@hxt-semitech.com>
Signed-off-by: Yang Shunyong <shunyong.yang@hxt-semitech.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Yang Shunyong 2018-02-02 17:51:09 +08:00 committed by Vinod Koul
parent 7928b2cbe5
commit 2e67a0875b
1 changed files with 12 additions and 4 deletions
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16
drivers/dma/dmatest.c
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@ -74,7 +74,11 @@ MODULE_PARM_DESC(timeout, "Transfer Timeout in msec (default: 3000), "
static bool noverify;
module_param(noverify, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(noverify, "Disable random data setup and verification");
MODULE_PARM_DESC(noverify, "Disable data verification (default: verify)");
static bool norandom;
module_param(norandom, bool, 0644);
MODULE_PARM_DESC(norandom, "Disable random offset setup (default: random)");
static bool verbose;
module_param(verbose, bool, S_IRUGO | S_IWUSR);
@ -103,6 +107,7 @@ struct dmatest_params {
unsigned int pq_sources;
int timeout;
bool noverify;
bool norandom;
};
/**
@ -575,7 +580,7 @@ static int dmatest_func(void *data)
break;
}
if (params->noverify)
if (params->norandom)
len = params->buf_size;
else
len = dmatest_random() % params->buf_size + 1;
@ -586,17 +591,19 @@ static int dmatest_func(void *data)
total_len += len;
if (params->noverify) {
if (params->norandom) {
src_off = 0;
dst_off = 0;
} else {
start = ktime_get();
src_off = dmatest_random() % (params->buf_size - len + 1);
dst_off = dmatest_random() % (params->buf_size - len + 1);
src_off = (src_off >> align) << align;
dst_off = (dst_off >> align) << align;
}
if (!params->noverify) {
start = ktime_get();
dmatest_init_srcs(thread->srcs, src_off, len,
params->buf_size, is_memset);
dmatest_init_dsts(thread->dsts, dst_off, len,
@ -975,6 +982,7 @@ static void run_threaded_test(struct dmatest_info *info)
params->pq_sources = pq_sources;
params->timeout = timeout;
params->noverify = noverify;
params->norandom = norandom;
request_channels(info, DMA_MEMCPY);
request_channels(info, DMA_MEMSET);