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author | Ali Saidi <saidi@eecs.umich.edu> | 2004-07-12 22:51:20 -0400 |
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committer | Ali Saidi <saidi@eecs.umich.edu> | 2004-07-12 22:51:20 -0400 |
commit | c2e5caf3606b85b6f45cde53b8021692ef01710e (patch) | |
tree | 9b54ed6e37afa3912699a4624935956c7d885f75 | |
parent | ef16b4648406f87940abeb5616fb82cd2cd7e7a6 (diff) | |
download | gem5-c2e5caf3606b85b6f45cde53b8021692ef01710e.tar.xz |
modified devtime to print out raw data
--HG--
extra : convert_revision : 5ad673d6f684acaffeb61db794f7e2ac099ba99d
-rw-r--r-- | util/ccdrv/devtime.c | 59 |
1 files changed, 38 insertions, 21 deletions
diff --git a/util/ccdrv/devtime.c b/util/ccdrv/devtime.c index 0e5d17f60..c3897e597 100644 --- a/util/ccdrv/devtime.c +++ b/util/ccdrv/devtime.c @@ -46,7 +46,6 @@ #define DRIVER_DESC "Interface to time uncacachable read and writes to device registers" #define DRIVER_VER "0.1" -static unsigned long devCnt, devSum, devSsq; static char *dataAddr = NULL; static int count = 0; @@ -55,35 +54,43 @@ static inline uint32_t cycleCounter(uint32_t dep); static int __init devtime_start(void) { uint64_t addr; - uint32_t t1, t2; + uint32_t t1, t2; uint32_t trash; int x; - + uint32_t *times; + uint32_t num = 0; struct net_device *dev; printk("Devtime Driver Version %s Loaded...\n", DRIVER_VER); - if (dataAddr != 0 && count != 0) { + if ((dataAddr != 0) && (count != 0)) + { addr = simple_strtoull(dataAddr, NULL, 0); - devSum = 0; - devCnt = count; - addr = ioremap(addr, PAGE_SIZE); /** * Make sure that the remapping actually worked. On alpha we have * linear addressing, so its not a problem. But it can fail in x86 * if physical memory is mapped to this address. */ - if (addr) { + times = kmalloc(sizeof(uint32_t) * count, GFP_USER); + if (!times) + { + printk("Could not allocate memory... Try again later.\n"); + return -1; + } + + if (addr) + { printk("Preparing to read %#llx %d times.\n", addr, count); t1 = cycleCounter(trash); - for (x = 0; x < count; x++) { + for (x=0; x < count; x++) + { trash = readl(addr); t2 = cycleCounter(trash); - devSum += t2 - t1; + times[num++] = t2 - t1; t1 = t2; } @@ -92,26 +99,37 @@ static int __init devtime_start(void) */ iounmap(addr); - printk("Read Address %#llx %ld times. Average latency %ld.\n", - addr, devCnt, devSum/devCnt); + printk("Measurements:\n"); + for (x = 0; x < count; x++) + { + printk("%d ", times[x]); + if (((x+1) % 10) == 0) + printk("\n"); + } + printk("\nDone.\n"); + + } else printk("Unable to remap address. Please try again later.\n"); } else { dev = dev_get_by_name("eth0"); - if (dev) { - printk("Eth0: MemStart: %#lx MemEnd: %#lx I/O Addr: %#lx\n", - dev->mem_start, dev->mem_end, dev->base_addr); + if (dev) + { + printk("Eth0: MemStart: %#lx MemEnd: %#lx I/O Addr: %#lx\n", dev->mem_start, + dev->mem_end, dev->base_addr); dev_put(dev); } dev = 0; dev = dev_get_by_name("eth1"); - if (dev) { - printk("Eth1: MemStart: %#lx MemEnd: %#lx I/O Addr: %#lx\n", - dev->mem_start, dev->mem_end, dev->base_addr); + if (dev) + { + printk("Eth1: MemStart: %#lx MemEnd: %#lx I/O Addr: %#lx\n", dev->mem_start, + dev->mem_end, dev->base_addr); dev_put(dev); } + printk("Required information not supplied.\n"); } @@ -141,8 +159,7 @@ inline uint32_t cycleCounter(uint32_t dep) #error Architecture NOT SUPPORTE #endif -static void __exit devtime_end(void) -{ +static void __exit devtime_end(void) { printk("Devtime Driver Version %s Unloaded...\n", DRIVER_VER); } @@ -150,7 +167,7 @@ static void __exit devtime_end(void) module_init(devtime_start); module_exit(devtime_end); -MODULE_LICENSE("BSD"); +MODULE_LICENSE("Dual BSD/GPL"); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); module_param(dataAddr, charp, 0); |