1. 14 10月, 2010 1 次提交
  2. 09 10月, 2010 3 次提交
  3. 03 10月, 2010 2 次提交
  4. 27 9月, 2010 1 次提交
  5. 26 9月, 2010 1 次提交
  6. 25 9月, 2010 1 次提交
    • A
      Introduce qemu_madvise() · e78815a5
      Andreas Färber 提交于
      vl.c has a Sun-specific hack to supply a prototype for madvise(),
      but the call site has apparently moved to arch_init.c.
      
      Haiku doesn't implement madvise() in favor of posix_madvise().
      OpenBSD and Solaris 10 don't implement posix_madvise() but madvise().
      MinGW implements neither.
      
      Check for madvise() and posix_madvise() in configure and supply qemu_madvise()
      as wrapper. Prefer madvise() over posix_madvise() due to flag availability.
      Convert all callers to use qemu_madvise() and QEMU_MADV_*.
      
      Note that on Solaris the warning is fixed by moving the madvise() prototype,
      not by qemu_madvise() itself. It helps with porting though, and it simplifies
      most call sites.
      
      v7 -> v8:
      * Some versions of MinGW have no sys/mman.h header. Reported by Blue Swirl.
      
      v6 -> v7:
      * Adopt madvise() rather than posix_madvise() semantics for returning errors.
      * Use EINVAL in place of ENOTSUP.
      
      v5 -> v6:
      * Replace two leftover instances of POSIX_MADV_NORMAL with QEMU_MADV_INVALID.
        Spotted by Blue Swirl.
      
      v4 -> v5:
      * Introduce QEMU_MADV_INVALID, suggested by Alexander Graf.
        Note that this relies on -1 not being a valid advice value.
      
      v3 -> v4:
      * Eliminate #ifdefs at qemu_advise() call sites. Requested by Blue Swirl.
        This will currently break the check in kvm-all.c by calling madvise() with
        a supported flag, which will not fail. Ideas/patches welcome.
      
      v2 -> v3:
      * Reuse the *_MADV_* defines for QEMU_MADV_*. Suggested by Alexander Graf.
      * Add configure check for madvise(), too.
        Add defines to Makefile, not QEMU_CFLAGS.
        Convert all callers, untested. Suggested by Blue Swirl.
      * Keep Solaris' madvise() prototype around. Pointed out by Alexander Graf.
      * Display configure check results.
      
      v1 -> v2:
      * Don't rely on posix_madvise() availability, add qemu_madvise().
        Suggested by Blue Swirl.
      Signed-off-by: NAndreas Färber <afaerber@opensolaris.org>
      Cc: Blue Swirl <blauwirbel@gmail.com>
      Cc: Alexander Graf <agraf@suse.de>
      Cc: Andrea Arcangeli <aarcange@redhat.com>
      Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
      e78815a5
  7. 22 9月, 2010 2 次提交
  8. 19 9月, 2010 1 次提交
  9. 18 9月, 2010 4 次提交
  10. 10 9月, 2010 5 次提交
    • S
      trace: Add LTTng Userspace Tracer backend · 7e24e92a
      Stefan Hajnoczi 提交于
      This patch adds LTTng Userspace Tracer (UST) backend support.  The UST
      system requires no kernel support but libust and liburcu must be
      installed.
      
      $ ./configure --trace-backend ust
      $ make
      
      Start the UST daemon:
      $ ustd &
      
      List available tracepoints and enable some:
      $ ustctl --list-markers $(pgrep qemu)
      [...]
      {PID: 5458, channel/marker: ust/paio_submit, state: 0, fmt: "acb %p
      opaque %p sector_num %lu nb_sectors %lu type %lu" 0x4b32ba}
      $ ustctl --enable-marker "ust/paio_submit" $(pgrep qemu)
      
      Run the trace:
      $ ustctl --create-trace $(pgrep qemu)
      $ ustctl --start-trace $(pgrep qemu)
      [...]
      $ ustctl --stop-trace $(pgrep qemu)
      $ ustctl --destroy-trace $(pgrep qemu)
      
      Trace results can be viewed using lttv-gui.
      
      More information about UST:
      http://lttng.org/ustSigned-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
      
      trace: Check for LTTng Userspace Tracer headers
      
      When using the 'ust' backend, check if the relevant headers are
      available at host.
      Signed-off-by: NPrerna Saxena <prerna@linux.vnet.ibm.com>
      Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
      7e24e92a
    • P
      trace: Specify trace file name · 9410b56c
      Prerna Saxena 提交于
      Allow users to specify a file for trace-outputs at configuration.
      Also, allow trace files to be annotated by <pid> so each qemu instance has
      unique traces.
      
      The trace file name can be passed as a config option:
      --trace-file=/path/to/file
      (Default: trace )
      At runtime, the pid of the qemu process is appended to the filename so
      that mutiple qemu instances do not have overlapping logs.
      
      Eg : trace-1234 for qemu launched with pid 1234.
      
      I have yet to test this on windows. getpid() is used at many places
      in code(including vnc.c), so I'm hoping this would be okay too.
      Edited-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
      Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
      9410b56c
    • P
      trace: Support for dynamically enabling/disabling trace events · 22890ab5
      Prerna Saxena 提交于
      This patch adds support for dynamically enabling/disabling of trace events.
      This is done by internally maintaining each trace event's state, and
      permitting logging of data from a trace event only if it is in an
      'active' state.
      
      Monitor commands added :
      1) info trace-events 		: to view all available trace events and
      				  their state.
      2) trace-event NAME on|off 	: to enable/disable data logging from a
      				  given trace event.
      				  Eg, trace-event paio_submit off
      				  	disables logging of data when
      					paio_submit is hit.
      
      By default, all trace-events are disabled. One can enable desired trace-events
      via the monitor.
      Signed-off-by: NPrerna Saxena <prerna@linux.vnet.ibm.com>
      Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
      
      trace: Monitor command 'info trace'
      
      Monitor command 'info trace' to display contents of trace buffer
      Signed-off-by: NPrerna Saxena <prerna@linux.vnet.ibm.com>
      Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
      
      trace: Remove monitor.h dependency from simpletrace
      
      User-mode targets don't have a monitor so the simple trace backend
      currently does not build on those targets.  This patch abstracts the
      monitor printing interface so there is no direct coupling between
      simpletrace and the monitor.
      Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
      22890ab5
    • S
      trace: Add simple built-in tracing backend · 26f7227b
      Stefan Hajnoczi 提交于
      This patch adds a simple tracer which produces binary trace files.  To
      try out the simple backend:
      
      $ ./configure --trace-backend=simple
      $ make
      
      After running QEMU you can pretty-print the trace:
      
      $ ./simpletrace.py trace-events trace.log
      
      The output of simpletrace.py looks like this:
      
        qemu_realloc 0.699 ptr=0x24363f0 size=0x3 newptr=0x24363f0
        qemu_free 0.768 ptr=0x24363f0
        ^           ^---- timestamp delta (us)
        |____ trace event name
      Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
      
      trace: Make trace record fields 64-bit
      
      Explicitly use 64-bit fields in trace records so that timestamps and
      magic numbers work for 32-bit host builds.
      
      Includes fixes from Prerna Saxena <prerna@linux.vnet.ibm.com>.
      Signed-off-by: NPrerna Saxena <prerna@linux.vnet.ibm.com>
      Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
      26f7227b
    • S
      trace: Add trace-events file for declaring trace events · 94a420b1
      Stefan Hajnoczi 提交于
      This patch introduces the trace-events file where trace events can be
      declared like so:
      
      qemu_malloc(size_t size) "size %zu"
      qemu_free(void *ptr) "ptr %p"
      
      These trace event declarations are processed by a new tool called
      tracetool to generate code for the trace events.  Trace event
      declarations are independent of the backend tracing system (LTTng User
      Space Tracing, ftrace markers, DTrace).
      
      The default "nop" backend generates empty trace event functions.
      Therefore trace events are disabled by default.
      
      The trace-events file serves two purposes:
      
      1. Adding trace events is easy.  It is not necessary to understand the
         details of a backend tracing system.  The trace-events file is a
         single location where trace events can be declared without code
         duplication.
      
      2. QEMU is not tightly coupled to one particular backend tracing system.
         In order to support tracing across QEMU host platforms and to
         anticipate new backend tracing systems that are currently maturing,
         it is important to be flexible and not tied to one system.
      
      This commit includes fixes from Prerna Saxena
      <prerna@linux.vnet.ibm.com> and Blue Swirl <blauwirbel@gmail.com>.
      Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
      94a420b1
  11. 27 8月, 2010 1 次提交
  12. 27 7月, 2010 5 次提交
  13. 30 6月, 2010 1 次提交
  14. 23 6月, 2010 1 次提交
  15. 13 6月, 2010 1 次提交
  16. 12 6月, 2010 2 次提交
  17. 10 6月, 2010 8 次提交