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Diffstat (limited to 'blktrace.c')
-rw-r--r--blktrace.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/blktrace.c b/blktrace.c
index 4cccb7c..a2bffa2 100644
--- a/blktrace.c
+++ b/blktrace.c
@@ -721,18 +721,24 @@ static void *my_mmap(void *addr, size_t length, int prot, int flags, int fd,
return new;
}
-static int my_mlock(const void *addr, size_t len)
+static int my_mlock(struct tracer *tp,
+ const void *addr, size_t len)
{
- int ret;
+ int ret, retry = 0;
do {
ret = mlock(addr, len);
+ if ((retry >= 10) && tp && tp->is_done)
+ break;
+ retry++;
} while (ret < 0 && handle_mem_failure(len));
return ret;
}
-static int setup_mmap(int fd, unsigned int maxlen, struct mmap_info *mip)
+static int setup_mmap(int fd, unsigned int maxlen,
+ struct mmap_info *mip,
+ struct tracer *tp)
{
if (mip->fs_off + maxlen > mip->fs_buf_len) {
unsigned long nr = max(16, mip->buf_nr);
@@ -759,7 +765,10 @@ static int setup_mmap(int fd, unsigned int maxlen, struct mmap_info *mip)
perror("setup_mmap: mmap");
return 1;
}
- my_mlock(mip->fs_buf, mip->fs_buf_len);
+ if (my_mlock(tp, mip->fs_buf, mip->fs_buf_len) < 0) {
+ perror("setup_mlock: mlock");
+ return 1;
+ }
}
return 0;
@@ -1683,7 +1692,7 @@ static int handle_pfds_file(struct tracer *tp, int nevs, int force_read)
if (pfd->revents & POLLIN || force_read) {
mip = &iop->mmap_info;
- ret = setup_mmap(iop->ofd, buf_size, mip);
+ ret = setup_mmap(iop->ofd, buf_size, mip, tp);
if (ret < 0) {
pfd->events = 0;
break;
@@ -2381,7 +2390,7 @@ static void net_client_read_data(struct cl_conn *nc, struct devpath *dpp,
struct io_info *iop = &dpp->ios[bnh->cpu];
struct mmap_info *mip = &iop->mmap_info;
- if (setup_mmap(iop->ofd, bnh->len, &iop->mmap_info)) {
+ if (setup_mmap(iop->ofd, bnh->len, &iop->mmap_info, NULL)) {
fprintf(stderr, "ncd(%s:%d): mmap failed\n",
nc->ch->hostname, nc->fd);
exit(1);