diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/endpoint/functions/pci-epf-test.c | 39 |
1 files changed, 14 insertions, 25 deletions
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index 909e3e8ac01c..0bb14fb21edd 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -295,34 +295,23 @@ static void pci_epf_test_clean_dma_chan(struct pci_epf_test *epf_test) return; } -static void pci_epf_test_print_rate(const char *ops, u64 size, +static void pci_epf_test_print_rate(struct pci_epf_test *epf_test, + const char *op, u64 size, struct timespec64 *start, struct timespec64 *end, bool dma) { - struct timespec64 ts; - u64 rate, ns; - - ts = timespec64_sub(*end, *start); - - /* convert both size (stored in 'rate') and time in terms of 'ns' */ - ns = timespec64_to_ns(&ts); - rate = size * NSEC_PER_SEC; - - /* Divide both size (stored in 'rate') and ns by a common factor */ - while (ns > UINT_MAX) { - rate >>= 1; - ns >>= 1; - } - - if (!ns) - return; + struct timespec64 ts = timespec64_sub(*end, *start); + u64 rate = 0, ns; /* calculate the rate */ - do_div(rate, (uint32_t)ns); + ns = timespec64_to_ns(&ts); + if (ns) + rate = div64_u64(size * NSEC_PER_SEC, ns * 1000); - pr_info("\n%s => Size: %llu bytes\t DMA: %s\t Time: %llu.%09u seconds\t" - "Rate: %llu KB/s\n", ops, size, dma ? "YES" : "NO", - (u64)ts.tv_sec, (u32)ts.tv_nsec, rate / 1024); + dev_info(&epf_test->epf->dev, + "%s => Size: %llu B, DMA: %s, Time: %llu.%09u s, Rate: %llu KB/s\n", + op, size, dma ? "YES" : "NO", + (u64)ts.tv_sec, (u32)ts.tv_nsec, rate); } static void pci_epf_test_copy(struct pci_epf_test *epf_test, @@ -397,7 +386,7 @@ static void pci_epf_test_copy(struct pci_epf_test *epf_test, kfree(buf); } ktime_get_ts64(&end); - pci_epf_test_print_rate("COPY", reg->size, &start, &end, + pci_epf_test_print_rate(epf_test, "COPY", reg->size, &start, &end, reg->flags & FLAG_USE_DMA); err_map_addr: @@ -481,7 +470,7 @@ static void pci_epf_test_read(struct pci_epf_test *epf_test, ktime_get_ts64(&end); } - pci_epf_test_print_rate("READ", reg->size, &start, &end, + pci_epf_test_print_rate(epf_test, "READ", reg->size, &start, &end, reg->flags & FLAG_USE_DMA); crc32 = crc32_le(~0, buf, reg->size); @@ -570,7 +559,7 @@ static void pci_epf_test_write(struct pci_epf_test *epf_test, ktime_get_ts64(&end); } - pci_epf_test_print_rate("WRITE", reg->size, &start, &end, + pci_epf_test_print_rate(epf_test, "WRITE", reg->size, &start, &end, reg->flags & FLAG_USE_DMA); /* |