Commit Graph

813 Commits

Author SHA1 Message Date
Lluís fa2d480a20 trace: [ust] fix generation of 'trace.c' on events without args
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-04-26 13:14:49 +01:00
Paolo Bonzini 1a96dd472c tracetool: allow ) in trace output string
Be greedy in matching the trailing "\)*" pattern.  Otherwise, all the
text in the trace string up to the last closed parenthesis is taken as
part of the prototype.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-04-26 13:14:49 +01:00
Alex Williamson 36d8d02dc8 PXE: Refresh all PXE ROMs from the ipxe submodule
Add script to make this easy to repeat later.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2011-04-18 11:46:41 -06:00
Stefan Hajnoczi 0b5538c300 simpletrace: Thread-safe tracing
Trace events outside the global mutex cannot be used with the simple
trace backend since it is not thread-safe.  There is no check to prevent
them being enabled so people sometimes learn this the hard way.

This patch restructures the simple trace backend with a ring buffer
suitable for multiple concurrent writers.  A writeout thread empties the
trace buffer when threshold fill levels are reached.  Should the
writeout thread be unable to keep up with trace generation, records will
simply be dropped.

Each time events are dropped a special record is written to the trace
file indicating how many events were dropped.  The event ID is
0xfffffffffffffffe and its signature is dropped(uint32_t count).

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-03-07 15:34:17 +00:00
Jes Sorensen e323c93edf tracetool: Add optional argument to specify dtrace probe names
Optional feature allowing a user to generate the probe list to match
the name of the binary, in case they wish to install qemu under a
different name than qemu-{system,user},<arch>

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Stefan Hajnoczi <stefaha@linux.vnet.ibm.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-06 20:38:59 +01:00
Stefan Hajnoczi 59da668492 simpletrace: Make simpletrace.py a Python module
The simpletrace.py script pretty-prints a binary trace file.  Most of
the code can be reused by trace file analysis scripts, so turn it into a
module.

Here is an example script that uses the new simpletrace module:

  #!/usr/bin/env python
  # Print virtqueue elements that were never returned to the guest.

  import simpletrace

  class VirtqueueRequestTracker(simpletrace.Analyzer):
      def __init__(self):
          self.elems = set()

      def virtqueue_pop(self, vq, elem, in_num, out_num):
          self.elems.add(elem)

      def virtqueue_fill(self, vq, elem, length, idx):
          self.elems.remove(elem)

      def end(self):
          for elem in self.elems:
              print hex(elem)

  simpletrace.run(VirtqueueRequestTracker())

The simpletrace API is based around the Analyzer class.  Users implement
an analyzer subclass and add methods for trace events they want to
process.  A catchall() method is invoked for trace events which do not
have dedicated methods.  Finally, there are also begin() and end()
methods like in sed that can be used to perform setup or print
statistics at the end.

A binary trace file is processed either with:

  simpletrace.run(analyzer) # uses command-line args

or with:

  simpletrace.process('path/to/trace-events',
                      'path/to/trace-file',
                      analyzer)

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-06 19:06:33 +01:00
Blue Swirl ad36ce8ba9 checkpatch.pl: don't complain about old lines with tabs
Don't complain when the patch includes lines with tabs
only in the hunk's untouched context.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-02-05 13:18:20 +00:00
Fabien Chouteau 320fba2a1f New trace-event backend: stderr
This backend sends trace events to standard error output during the emulation.

Also add a "--list-backends" option to tracetool, so configure script can
display the list of available backends.

Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
Acked-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-29 22:52:00 +00:00
Blue Swirl ba76a84d2d gdbstub-xml: avoid a warning from sparse
Include a header to get the declaration for xml_builtin. This
avoids a warning from sparse:
  CC    m68k-softmmu/gdbstub-xml.o
gdbstub-xml.c:244:12: warning: symbol 'xml_builtin' was not declared. Should it be static?

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-23 11:43:25 +00:00
Jan Kiszka 789f88d0b2 checkpatch: Fix bracing false positives on #else
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-21 17:32:45 +00:00
Blue Swirl b646968336 checkpatch: adjust to QEMUisms
Change checkpatch.pl for QEMU use:
 - Root directory detection
 - Forbid tabs
 - Indent at 4 spaces
 - Allow typedefs
 - Enforce brace use even for single statement blocks
 - Don't suggest nonexistent cleanup tools

Mention the script in CODING_STYLE.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-20 20:58:56 +00:00
Blue Swirl 1ec3f6f9ab Add checkpatch.pl from Linux kernel
Unchanged import from
http://www.kernel.org/pub/linux/kernel/people/apw/checkpatch/checkpatch.pl-0.31

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-20 20:54:26 +00:00
Blue Swirl 4c3b5a4891 Add scripts directory
Move build and user scripts into scripts directory.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-20 20:54:21 +00:00