Merge branch 'master' of ssh://sources.redhat.com/git/systemtap

* 'master' of ssh://sources.redhat.com/git/systemtap: (34 commits)
  Update the langref copyright notice
  Fix some probe examples in the language reference
  Remove automatic authorization of servers started by root as trusted signers.
  docs: add abnormal termination section to PROCESSING
  Remove unneeded header file
  Get the module to sign from -p4's stdout
  Move --unprivileged support news to the top.
  Firther updates to NEWS regarding signing and unprivileged users.
  Authorize new certificates created for servers started by root as authorized signers.
  2009-09-14  Dave Brolley  <brolley@redhat.com>
  Allow remaining process.* probes for unprivileged users.
  Use the sched_switch tracepoint if available.
  PR10608: mark test cases untested once compilation failed
  Make check.exp not sleep so much in test_installcheck.
  Make tracepoints.exp test more efficient by running as one giant script.
  Only test highest optimization for exelib.exp test.
  Replace small exelib.exp testcases with one jumbo testcase.
  Remove duplicate uprobe_derived_probe code
  Add semaphores for use with the forthcoming sdt marker checks.
  Add actual pc address to semantic error about inaccessible variables.
  ...

Conflicts:
	tapsets.cxx

1 files changed, 15 insertions, 1 deletions

diff --git a/testsuite/systemtap.examples/io/iostat-scsi.stp b/testsuite/systemtap.examples/io/iostat-scsi.stp
index 8251741d..f6715a42 100755
--- a/testsuite/systemtap.examples/io/iostat-scsi.stp
+++ b/testsuite/systemtap.examples/io/iostat-scsi.stp
@@ -20,14 +20,28 @@ probe module("sd_mod").function("sd_init_command") !, kernel.function("sd_init_c
 }
 %:
 
-function get_sector_size:long (data:long) { /* pure */
+function get_sector_size:long (data:long) { 
   return @cast(data, "scsi_device", "kernel<scsi/scsi_device.h>")->sector_size
 }
 
+%(kernel_v>="2.6.31" %?
+%{
+#include <linux/blkdev.h>
+%}
+
+function get_nr_sectors:long(rq:long) %{ /* pure */
+  THIS->__retvalue = blk_rq_sectors((const struct request *)(long)THIS->rq);
+%}
+%)
+
 probe module("sd_mod").function("sd_prep_fn") !, kernel.function("sd_prep_fn") {
   device=kernel_string($rq->rq_disk->disk_name)
   sector_size=get_sector_size($q->queuedata)
+%(kernel_v>="2.6.31" %?
+  nr_sectors=get_nr_sectors($rq)
+%:
   nr_sectors=$rq->nr_sectors
+%)
   devices[device] = 1
   if ($rq->cmd_flags & 1)
     writes[device] <<< nr_sectors * sector_size