#define BLOCKSIZE 4096
#define CERROR(fmt, arg...) fprintf(stderr, fmt, ## arg)
+#ifndef __u64
#define __u64 long long
-#define LASSERT(v) do {} while(0)
#define HTON__u64(v) (v)
-#define LPU64 "%Ld"
-#define LPX64 "%Lx"
+#endif
+
+#ifndef LPU64
+#define LPU64 "%Lu"
+#define LPX64 "%#Lx"
+#endif
+
+#define READ 1
+#define WRITE 2
#define LPDS sizeof(__u64)
int page_debug_setup(void *addr, int len, __u64 off, __u64 id)
{
- LASSERT(addr);
-
off = HTON__u64(off);
id = HTON__u64(id);
memcpy(addr, (char *)&off, LPDS);
return 0;
}
-int page_debug_check(char *who, void *addr, int end, __u64 off, __u64 id)
+int page_debug_check(char *who, void *addr, int size, __u64 off, __u64 id)
{
__u64 ne_off;
int err = 0;
- LASSERT(addr);
-
ne_off = HTON__u64(off);
id = HTON__u64(id);
if (memcmp(addr, (char *)&ne_off, LPDS)) {
err = -EINVAL;
}
- addr += end - LPDS - LPDS;
+ addr += size - LPDS - LPDS;
if (memcmp(addr, (char *)&ne_off, LPDS)) {
CERROR("%s: for offset "LPU64" end off: "LPX64" != "LPX64"\n",
who, off, *(__u64 *)addr, ne_off);
}
#undef LPDS
+void usage(char *prog)
+{
+ fprintf(stderr,
+ "usage: %s file count [[d]{r|w|rw} [pages_per_vec [objid]]]\n",
+ prog);
+ exit(1);
+}
+
int main(int argc, char **argv)
{
int fd;
char *buf;
- long pg_vec, count;
- long len;
- long long end, offset;
- long objid = 3;
+ long long count, last, offset;
+ long pg_vec, len;
+ long long objid = 3;
+ int flags = 0;
+ int cmd = 0;
+ char *end;
int rc;
- if (argc < 4 || argc > 5) {
- fprintf(stderr,
- "usage: %s file pages_per_vec count [objid]\n",
- argv[0]);
- return 1;
- }
+ if (argc < 3 || argc > 6)
+ usage(argv[0]);
- pg_vec = strtoul(argv[2], 0, 0);
- count = strtoul(argv[3], 0, 0);
- len = pg_vec * BLOCKSIZE;
- end = (long long)count * len;
+ count = strtoull(argv[2], &end, 0);
+ if (*end) {
+ fprintf(stderr, "%s: invalid count '%s'\n", argv[0], argv[2]);
+ usage(argv[0]);
+ }
+ if (argc >= 4) {
+ if (strchr(argv[3], 'r')) {
+ cmd = READ;
+ flags = O_RDONLY;
+ }
+ if (strchr(argv[3], 'w')) {
+ cmd |= WRITE;
+ flags = O_RDWR | O_CREAT;
+ }
+ if (strchr(argv[3], 'd')) {
+ flags |= O_DIRECT;
+ }
+ if (!cmd)
+ usage(argv[0]);
+ } else {
+ cmd = READ | WRITE;
+ flags = O_RDWR | O_CREAT | O_DIRECT;
+ }
- if (argc == 5)
- objid = strtoul(argv[4], 0, 0);
+ if (argc >= 5) {
+ pg_vec = strtoul(argv[4], &end, 0);
+ if (*end) {
+ fprintf(stderr, "%s: invalid pages_per_vec '%s'\n",
+ argv[0], argv[4]);
+ usage(argv[0]);
+ }
+ }
+ len = pg_vec * BLOCKSIZE;
+ last = (long long)count * len;
+
+ if (argc >= 6) {
+ objid = strtoull(argv[5], &end, 0);
+ if (*end) {
+ fprintf(stderr, "%s: invalid objid '%s'\n",
+ argv[0], argv[5]);
+ usage(argv[0]);
+ }
+ }
- printf("directio on %s(%ld) for %ldx%ld pages \n",
+ printf("%s: %s on %s(objid "LPX64") for "LPU64"x%ld pages \n",
+ argv[0], flags & O_DIRECT ? "directio" : "i/o",
argv[1], objid, count, pg_vec);
buf = mmap(0, len, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0);
if (!buf) {
- fprintf(stderr, "No memory %s\n", strerror(errno));
+ fprintf(stderr, "%s: no buffer memory %s\n",
+ argv[0], strerror(errno));
return 2;
}
- fd = open(argv[1], O_DIRECT | O_RDWR | O_CREAT);
+ fd = open(argv[1], flags | O_LARGEFILE);
if (fd == -1) {
- fprintf(stderr, "Cannot open %s: %s\n", argv[1],
- strerror(errno));
+ fprintf(stderr, "%s: cannot open %s: %s\n", argv[0],
+ argv[1], strerror(errno));
return 3;
}
- for (offset = 0; offset < end; offset += len) {
+ for (offset = 0; offset < last && cmd & WRITE; offset += len) {
int i;
for (i = 0; i < len; i += BLOCKSIZE)
}
if (rc != len) {
- fprintf(stderr, "Write error: %s, rc %d\n",
- strerror(errno), rc);
+ fprintf(stderr, "%s: write error: %s, rc %d\n",
+ argv[0], strerror(errno), rc);
return 4;
}
}
- if ( lseek(fd, 0, SEEK_SET) != 0 ) {
- fprintf(stderr, "Cannot seek %s\n", strerror(errno));
+ if (lseek(fd, 0, SEEK_SET) != 0) {
+ fprintf(stderr, "%s: cannot seek %s\n",
+ argv[0], strerror(errno));
return 5;
}
- for (offset = 0; offset < end; offset += len) {
+ for (offset = 0; offset < last && cmd && READ; offset += len) {
int i;
rc = read(fd, buf, len);
if (rc != len) {
- fprintf(stderr, "Read error: %s, rc %d\n",
- strerror(errno), rc);
+ fprintf(stderr, "%s: read error: %s, rc %d\n",
+ argv[0], strerror(errno), rc);
return 6;
}