[Bug translator/10065] New: Enable SystemTap translator to create modules for Hardware Breakpoint

[Bug translator/10065] New: Enable SystemTap translator to create modules for Hardware Breakpoint

[prasad at linux dot vnet dot ibm dot com]

In-kernel interfaces to use Hardware Breakpoint registers are proposed for
inclusion in Linux Kernel through the patchset seen here:
http://lkml.org/lkml/2009/4/7/72.

Hardware Breakpoint registers can trace read/write operations on kernel
variables and can be very useful in debugging data corruption issues. The
infrastructure allows the user to define a callback function invoked through the
HW Breakpoint exception handler (analogous to the kprobe handler routines) and
can typically be used to generate backtraces, data access logs, print messages, etc.

It would be a good addition to SystemTap translator when generation of HW
Breakpoint modules is enabled through its characteristic probe, something like
'probe kernel.data("kernel symbol").write'.

Sample HW Breakpoint module can be found in the patchset (patch 10/11) in the
file samples/hw_breakpoint/data_breakpoint.c

-- 
           Summary: Enable SystemTap translator to create modules for
                    Hardware Breakpoint
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: translator
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: prasad at linux dot vnet dot ibm dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=10065

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[Bug translator/10065] Enable SystemTap translator to create modules for Hardware Breakpoint

[fche at redhat dot com]

------- Additional Comments From fche at redhat dot com  2009-04-13 13:33 -------
*** Bug 1324 has been marked as a duplicate of this bug. ***

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           What    |Removed                     |Added
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                 CC|                            |fche at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=10065

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[Bug translator/10065] Enable SystemTap translator to create modules for Hardware Breakpoint

[jistone at redhat dot com]

------- Additional Comments From jistone at redhat dot com  2010-04-28 22:24 -------
Prerna Saxena added this for x86 and s390 in systemtap 1.2.  We can continue
adding other architectures as the kernel gains support.

Commits:
9103686 Hardware Breakpoints for x86 / x86_64, based on mainline kernel
dd22525 Hardware Breakpoints for x86 / x86_64, based on mainline kernel.
[Changes : Part 2]
bb0a4e1 Translator enablement of Hardware breakpoints for s390


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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://sourceware.org/bugzilla/show_bug.cgi?id=10065

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