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authorJim Keniston <jkenisto@us.ibm.com>2009-04-15 16:02:58 -0700
committerJim Keniston <jkenisto@us.ibm.com>2009-04-15 16:02:58 -0700
commit900686f5e209099d493a15f4e36a5030dc0aa8be (patch)
tree405757c92915c516cd0ff28e217a000843573f3f /NEWS
parent2020af07c2a7f58538874ce652b52a6883f7ada0 (diff)
parent7c2136cfc88d68cfc5eb490444dc25c7dc1c0632 (diff)
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Merge branch 'master' of ssh://kenistoj@sources.redhat.com/git/systemtap
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+* What's new
+
+- The overlapping process.* tapsets are now separated. Those probe points
+ documented in stapprobes(3stap) remain the same. Those that were formerly
+ in stapprobes.process(3stap) have been renamed to kprocess, to reflect
+ their kernel perspective on processes.
+
+- The --skip-badvars option now also suppresses run-time error
+ messages that would otherwise result from erroneous memory accesses.
+ Such accesses can originate from $context expressions fueled by
+ erroneous debug data, or by kernel_{long,string,...}() tapset calls.
+
* What's new in version 0.9.5
- - New probes process().insn and process().insn.block that allows
- inspection of the process after each instruction or block of
- instructions executed. So to count the total number of instructions
- a process executes during a run do something like:
- $ stap -e 'global steps; probe process("/bin/ls").insn {steps++}
- probe end {printf("Total instructions: %d\n", steps);}' \
- -c /bin/ls
- This feature can slow down execution of a process somewhat.
-
- - Systemtap probes and function man pages extracted from the tapsets
- are now available under 3stap. To show the page for probe vm.pagefault
- or the stap function pexecname do:
- $ man 3stap vm.pagefault
- $ man 3stap pexecname
+- New probes process().insn and process().insn.block that allows
+ inspection of the process after each instruction or block of
+ instructions executed. So to count the total number of instructions
+ a process executes during a run do something like:
+ $ stap -e 'global steps; probe process("/bin/ls").insn {steps++}
+ probe end {printf("Total instructions: %d\n", steps);}' \
+ -c /bin/ls
+ This feature can slow down execution of a process somewhat.
+
+- Systemtap probes and function man pages extracted from the tapsets
+ are now available under 3stap. To show the page for probe vm.pagefault
+ or the stap function pexecname do:
+ $ man 3stap vm.pagefault
+ $ man 3stap pexecname
- Kernel tracepoints are now supported for probing predefined kernel
events without any debuginfo. Tracepoints incur less overhead than