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| author | Keir Fraser <keir@xensource.com> | 2007-10-25 15:04:33 +0100 |
|---|---|---|
| committer | Keir Fraser <keir@xensource.com> | 2007-10-25 15:04:33 +0100 |
| commit | 80273cb18f581206d41a47f011e85d7badee02dc (patch) | |
| tree | 57c23c7bd1901e01103fb226051e8ba8937250d9 | |
| parent | 0f69f64f5c1de50ebea75b91800c20c585c1b4b9 (diff) | |
| download | xen-80273cb18f581206d41a47f011e85d7badee02dc.tar.gz xen-80273cb18f581206d41a47f011e85d7badee02dc.tar.bz2 xen-80273cb18f581206d41a47f011e85d7badee02dc.zip | |
qemu: Add extra tracing around logdirty bitmap setup.
Signed-off-by: Ben Guthro <bguthro@virtualron.com>
Signed-off-by: Gary Grebus <ggrebus@virtualiron.com>
| -rw-r--r-- | tools/ioemu/xenstore.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/tools/ioemu/xenstore.c b/tools/ioemu/xenstore.c index ed85eea5f0..5710466bac 100644 --- a/tools/ioemu/xenstore.c +++ b/tools/ioemu/xenstore.c @@ -303,12 +303,19 @@ void xenstore_process_logdirty_event(void) logdirty_bitmap_size *= sizeof (unsigned long); /* bytes */ /* Map the shared-memory segment */ - if ((shmid = shmget(key, - 2 * logdirty_bitmap_size, - S_IRUSR|S_IWUSR)) == -1 - || (seg = shmat(shmid, NULL, 0)) == (void *)-1) { - fprintf(logfile, "Log-dirty: can't map segment %16.16llx (%s)\n", - (unsigned long long) key, strerror(errno)); + fprintf(logfile, "%s: key=%16.16llx size=%d\n", __FUNCTION__, + (unsigned long long)key, logdirty_bitmap_size); + shmid = shmget(key, 2 * logdirty_bitmap_size, S_IRUSR|S_IWUSR); + if (shmid == -1) { + fprintf(logfile, "Log-dirty: shmget failed: segment %16.16llx " + "(%s)\n", (unsigned long long)key, strerror(errno)); + exit(1); + } + + seg = shmat(shmid, NULL, 0); + if (seg == (void *)-1) { + fprintf(logfile, "Log-dirty: shmat failed: segment %16.16llx " + "(%s)\n", (unsigned long long)key, strerror(errno)); exit(1); } |