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Daniel P. Berrange ea1ff54f7d trace: ensure unique function / variable names per .stp file
The simpletrace compatibility code for systemtap creates a
function and some global variables for mapping to event ID
numbers. We generate multiple -simpletrace.stp files though,
one per target and systemtap considers functions & variables
to be globally scoped, not per file. So if trying to use the
simpletrace compat probes, systemtap will complain:

 # stap -e 'probe qemu.system.arm.simpletrace.visit_type_str { print( "hello")}'
 semantic error: conflicting global variables: identifier 'event_name_to_id_map' at /usr/share/systemtap/tapset/qemu-aarch64-simpletrace.stp:3:8
        source: global event_name_to_id_map
                       ^
 identifier 'event_name_to_id_map' at /usr/share/systemtap/tapset/qemu-system-arm-simpletrace.stp:3:8
        source: global event_name_to_id_map
                       ^

 WARNING: cross-file global variable reference to identifier 'event_name_to_id_map' at /usr/share/systemtap/tapset/qemu-system-arm-simpletrace.stp:3:8 from: identifier 'event_name_to_id_map' at /usr/share/systemtap/tapset/qemu-aarch64-simpletrace.stp:8:21
 source:     if (!([name] in event_name_to_id_map)) {
                             ^
 WARNING: cross-file global variable reference to identifier 'event_next_id' at /usr/share/systemtap/tapset/qemu-system-arm-simpletrace.stp:4:8 from: identifier 'event_next_id' at :9:38
 source:         event_name_to_id_map[name] = event_next_id
                                              ^

We already have a string used to prefix probe names, so just
replace '.' with '_' to get a function / variable name prefix

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170728133657.5525-1-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-08-01 10:36:30 +01:00
accel tcg: Pass generic CPUState to gen_intermediate_code() 2017-07-19 14:45:16 -07:00
audio docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
backends memory: Rename memory_region_init_ram() to memory_region_init_ram_nomigrate() 2017-07-14 17:59:42 +01:00
block docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
bsd-user bsd-user/main.c: Fix unused variable warning 2017-07-21 15:01:09 +01:00
chardev docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
contrib vhost-user-scsi: Introduce a vhost-user-scsi sample application 2017-06-15 11:18:40 +02:00
crypto docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
default-configs configure: Use an explicit CONFIG_IVSHMEM rather than CONFIG_EVENTFD 2017-07-20 14:58:19 +01:00
disas disas/microblaze: Add missing 'const' attributes 2017-07-04 09:22:20 +02:00
docs docs: fix broken paths to docs/specs/ivshmem-spec.txt 2017-07-31 13:13:01 +03:00
dtc@558cd81bdd dtc: Revert unintentional submodule downgrade from commit c2cabb3422 2017-03-16 14:11:15 +00:00
fpu softfloat: define floatx80_round() 2017-06-29 20:27:39 +02:00
fsdev block: remove timer canceling in throttle_config() 2017-07-18 15:14:35 +02:00
gdb-xml s390x/gdb: add gs registers 2017-07-14 12:29:49 +02:00
hw hw/mps2_scc: fix incorrect properties 2017-07-31 13:11:56 +01:00
include docs: fix broken paths to docs/devel/atomics.txt 2017-07-31 13:12:47 +03:00
io docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
libdecnumber libdecnumber: Clean up includes 2016-02-16 14:29:27 +00:00
linux-headers linux header sync against v4.13-rc1 2017-07-18 10:55:16 +02:00
linux-user Revert "syscall: fix dereference of undefined pointer" 2017-07-31 13:56:54 +01:00
migration docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
nbd nbd: fix memory leak in nbd_opt_go() 2017-07-28 11:58:20 -05:00
net docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
pc-bios pseries: Update SLOF firmware image 2017-07-25 14:35:42 +10:00
pixman@87eea99e44 pixman: update internal copy to pixman-0.32.6 2014-09-15 08:14:19 +02:00
po po: add missing translations in de, fr, it, zh 2016-12-14 18:47:19 +00:00
qapi docs: fix broken paths to docs/devel/qapi-code-gen.txt 2017-07-31 13:12:41 +03:00
qga test-qga: add test for guest-get-osinfo 2017-07-18 05:49:01 -05:00
qobject qapi: Separate type QNull from QObject 2017-07-24 13:35:11 +02:00
qom docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
replay -----BEGIN PGP SIGNATURE----- 2017-06-05 10:09:14 +01:00
roms pseries: Update SLOF firmware image 2017-07-25 14:35:42 +10:00
scripts trace: ensure unique function / variable names per .stp file 2017-08-01 10:36:30 +01:00
slirp slirp: Handle error returns from sosendoob() 2017-07-15 14:28:25 +02:00
stubs migration: Move check_migratable() into qdev.c 2017-05-17 12:04:59 +02:00
target target/arm: Migrate MPU_RNR register state for M profile cores 2017-07-31 13:09:52 +01:00
tcg docs: fix broken paths to docs/devel/atomics.txt 2017-07-31 13:12:47 +03:00
tests tests: add missing dependency to build QTEST_QEMU_BINARY 2017-07-31 13:06:38 +03:00
trace exec: [tcg] Use different TBs according to the vCPU's dynamic tracing state 2017-07-17 13:11:05 +01:00
ui docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
util docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
.dir-locals.el Add .dir-locals.el file to configure emacs coding style 2015-10-08 19:46:01 +03:00
.editorconfig add editorconfig 2017-07-20 09:56:56 +02:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gdbinit .gdbinit: load QEMU sub-commands when gdb starts 2017-06-07 14:38:45 +01:00
.gitignore coccinelle: ignore ASTs pre-parsed cached C files 2017-07-19 14:45:15 -07:00
.gitmodules Add QemuMacDrivers as submodule 2017-05-11 09:45:15 +10:00
.mailmap Update mailmap 2013-09-05 09:40:31 -05:00
.shippable.yml shippable: add win32/64 targets 2017-07-18 10:58:36 +01:00
.travis.yml travis: move make -j flag out of script 2017-07-18 09:39:19 +01:00
arch_init.c audio: Rename hw/audio/audio.h to hw/audio/soundhw.h 2017-05-19 10:48:54 +02:00
atomic_template.h tcg: Add atomic128 helpers 2016-10-26 08:29:01 -07:00
balloon.c trace: switch to modular code generation for sub-directories 2017-01-31 17:11:18 +00:00
block.c block: Skip implicit nodes in query-block/blockstats 2017-07-24 15:06:04 +02:00
blockdev-nbd.c nbd: Fix regression on resiliency to port scan 2017-06-15 11:04:05 +02:00
blockdev.c block: Use JSON null instead of "" to disable backing file 2017-07-24 13:35:11 +02:00
blockjob.c fix: avoid an infinite loop or a dangling pointer problem in img_commit 2017-06-26 14:54:46 +02:00
bootdevice.c Makefile: Move bootdevice.o to common-obj-y 2017-07-04 14:39:27 +02:00
bt-host.c all: Clean up includes 2016-02-04 17:41:30 +00:00
bt-vhci.c all: Clean up includes 2016-02-04 17:41:30 +00:00
Changelog Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
CODING_STYLE CODING_STYLE: Mention preferred comment form 2017-02-28 09:03:38 +03:00
configure util: Introduce include/qemu/cpuid.h 2017-07-24 12:42:55 +01:00
COPYING COPYING: update from FSF 2008-10-12 17:54:42 +00:00
COPYING.LIB Update FSF address in GPL/LGPL boilerplate 2009-01-04 22:05:52 +00:00
cpus-common.c *_run_on_cpu: introduce run_on_cpu_data type 2016-10-31 15:00:25 +01:00
cpus.c Convert error_report() to warn_report() 2017-07-13 13:49:58 +02:00
device_tree.c device_tree: fix compiler warnings (clang 5) 2017-05-07 09:57:51 +03:00
device-hotplug.c blockdev: Split monitor reference from BB creation 2016-03-17 15:47:56 +01:00
disas.c Fix Thumb-1 BE32 execution and disassembly. 2017-02-07 18:29:59 +00:00
dma-helpers.c block: explicitly acquire aiocontext in bottom halves that need it 2017-02-21 11:39:39 +00:00
dump.c dump: Acquire BQL around vm_start() in dump thread 2017-05-05 12:10:00 +02:00
exec.c cpu: Convert to DEFINE_PROP_LINK 2017-07-14 12:04:43 +02:00
gdbstub.c Use qemu_tolower() and qemu_toupper(), not tolower() and toupper() 2017-07-21 10:32:41 +01:00
HACKING HACKING: document #include order 2017-01-03 16:38:47 +00:00
hax-stub.c Plumb the HAXM-based hardware acceleration support 2017-01-19 22:07:46 +01:00
hmp-commands-info.hx s390x/migration: Monitor commands for storage attributes 2017-07-14 12:29:47 +02:00
hmp-commands.hx s390x/kvm/migration/cpumodel: fixes, enhancements and cleanups 2017-07-14 14:19:35 +01:00
hmp.c migration: Use JSON null instead of "" to reset parameter to default 2017-07-24 13:35:11 +02:00
hmp.h hmp: add hmp analogue for qmp-chardev-change 2017-07-14 11:04:34 +02:00
ioport.c trace: switch to modular code generation for sub-directories 2017-01-31 17:11:18 +00:00
iothread.c monitor: add poll-* properties into query-iothreads result 2017-02-21 18:29:01 +00:00
LICENSE vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 2014-12-19 15:24:06 -07:00
MAINTAINERS MAINTAINERS: Improve the NetBSD regex pattern 2017-07-31 13:05:49 +03:00
Makefile build-sys: there is no qemu-ga.c 2017-07-31 13:06:38 +03:00
Makefile.objs configure: Don't build ivshmem tools unless CONFIG_IVSHMEM is set 2017-07-20 14:58:19 +01:00
Makefile.target trace: ensure .stp files are rebuilt if trace tool source changes 2017-08-01 10:36:29 +01:00
memory_ldst.inc.c exec: introduce memory_ldst.inc.c 2016-12-22 16:00:23 +01:00
memory_mapping.c dump: fix memory_mapping_filter leak 2017-06-04 18:42:55 +03:00
memory.c memory.h: Add memory_region_init_{ram, rom, rom_device}() handling migration 2017-07-14 17:59:42 +01:00
module-common.c all: Clean up includes 2016-02-04 17:41:30 +00:00
monitor.c s390x/kvm/migration/cpumodel: fixes, enhancements and cleanups 2017-07-14 14:19:35 +01:00
numa.c memory: Rename memory_region_init_ram() to memory_region_init_ram_nomigrate() 2017-07-14 17:59:42 +01:00
os-posix.c use g_path_get_dirname instead of dirname 2016-07-17 09:59:21 +02:00
os-win32.c shutdown: Add source information to SHUTDOWN and RESET 2017-05-23 13:28:17 +02:00
qapi-schema.json docs: fix broken paths to docs/interop dir 2017-07-31 13:06:52 +03:00
qdev-monitor.c migration: Move remaining exported functions to migration/misc.h 2017-06-13 11:00:45 +02:00
qdict-test-data.txt Introduce QDict test data file 2009-09-04 09:37:34 -05:00
qemu-bridge-helper.c all: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
qemu-doc.texi docs: document encryption options for qcow, qcow2 and luks 2017-07-11 17:44:57 +02:00
qemu-ga.texi qemu-ga: Remove stray 'q' in documentation 2016-10-28 18:17:23 +03:00
qemu-img-cmds.hx qemu-img: Check for backing image if specified during create 2017-07-18 15:27:37 +02:00
qemu-img.c maint: Reorder include directives for qemu-{nbd, io} 2017-07-24 08:53:08 -05:00
qemu-img.texi qemu-img: Check for backing image if specified during create 2017-07-18 15:27:37 +02:00
qemu-io-cmds.c block: Add PreallocMode to blk_truncate() 2017-07-11 17:45:01 +02:00
qemu-io.c block: rip out all traces of password prompting 2017-07-11 17:44:56 +02:00
qemu-nbd.c maint: Reorder include directives for qemu-{nbd, io} 2017-07-24 08:53:08 -05:00
qemu-nbd.texi nbd: Add qemu-nbd -D for human-readable description 2016-11-02 09:28:55 +01:00
qemu-option-trace.texi docs: update manpage for stderr->log rename 2017-02-13 13:38:31 +00:00
qemu-options-wrapper.h hxtool: emit Texinfo headings as @subsection 2017-01-16 17:52:35 +01:00
qemu-options.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
qemu-options.hx -----BEGIN PGP SIGNATURE----- 2017-07-18 09:16:43 +01:00
qemu-seccomp.c seccomp: adding getrusage to the whitelist 2016-09-21 11:26:02 +02:00
qemu-tech.texi qemu-doc: merge qemu-tech and qemu-doc 2016-10-07 10:05:54 +02:00
qemu.nsi qemu-doc: merge qemu-tech and qemu-doc 2016-10-07 10:05:54 +02:00
qemu.sasl Default to GSSAPI (Kerberos) instead of DIGEST-MD5 for SASL 2017-05-09 14:41:47 +01:00
qmp.c qmp: Include parent type on 'qom-list-types' output 2017-07-17 15:41:30 -03:00
qtest.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
README README: Add linux to macOS build info 2017-01-24 23:26:52 +03:00
replication.c replication: Introduce new APIs to do replication operation 2016-09-13 11:00:56 +01:00
replication.h replication: Introduce new APIs to do replication operation 2016-09-13 11:00:56 +01:00
rules.mak docs: create interop/ subdirectory 2017-06-15 11:18:39 +02:00
softmmu_template.h cputlb: Tidy some macros 2016-10-26 08:29:00 -07:00
thunk.c thunk: assert nb_fields is valid 2017-07-31 13:06:39 +03:00
tpm.c qapi: Don't special-case simple union wrappers 2016-03-18 10:29:26 +01:00
trace-events trace: [trivial] Statically enable all guest events 2017-07-17 13:11:13 +01:00
user-exec-stub.c stubs: group stubs for user-mode emulation 2017-01-16 17:52:35 +01:00
user-exec.c Replace 'struct ucontext' with 'ucontext_t' type 2017-07-20 10:10:28 +01:00
VERSION Update version for v2.10.0-rc0 release 2017-07-25 17:13:09 +01:00
version.rc Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
vl.c * gdbstub fixes (Alex) 2017-07-14 12:16:09 +01:00

         QEMU README
         ===========

QEMU is a generic and open source machine & userspace emulator and
virtualizer.

QEMU is capable of emulating a complete machine in software without any
need for hardware virtualization support. By using dynamic translation,
it achieves very good performance. QEMU can also integrate with the Xen
and KVM hypervisors to provide emulated hardware while allowing the
hypervisor to manage the CPU. With hypervisor support, QEMU can achieve
near native performance for CPUs. When QEMU emulates CPUs directly it is
capable of running operating systems made for one machine (e.g. an ARMv7
board) on a different machine (e.g. an x86_64 PC board).

QEMU is also capable of providing userspace API virtualization for Linux
and BSD kernel interfaces. This allows binaries compiled against one
architecture ABI (e.g. the Linux PPC64 ABI) to be run on a host using a
different architecture ABI (e.g. the Linux x86_64 ABI). This does not
involve any hardware emulation, simply CPU and syscall emulation.

QEMU aims to fit into a variety of use cases. It can be invoked directly
by users wishing to have full control over its behaviour and settings.
It also aims to facilitate integration into higher level management
layers, by providing a stable command line interface and monitor API.
It is commonly invoked indirectly via the libvirt library when using
open source applications such as oVirt, OpenStack and virt-manager.

QEMU as a whole is released under the GNU General Public License,
version 2. For full licensing details, consult the LICENSE file.


Building
========

QEMU is multi-platform software intended to be buildable on all modern
Linux platforms, OS-X, Win32 (via the Mingw64 toolchain) and a variety
of other UNIX targets. The simple steps to build QEMU are:

  mkdir build
  cd build
  ../configure
  make

Additional information can also be found online via the QEMU website:

  http://qemu-project.org/Hosts/Linux
  http://qemu-project.org/Hosts/Mac
  http://qemu-project.org/Hosts/W32


Submitting patches
==================

The QEMU source code is maintained under the GIT version control system.

   git clone git://git.qemu-project.org/qemu.git

When submitting patches, the preferred approach is to use 'git
format-patch' and/or 'git send-email' to format & send the mail to the
qemu-devel@nongnu.org mailing list. All patches submitted must contain
a 'Signed-off-by' line from the author. Patches should follow the
guidelines set out in the HACKING and CODING_STYLE files.

Additional information on submitting patches can be found online via
the QEMU website

  http://qemu-project.org/Contribute/SubmitAPatch
  http://qemu-project.org/Contribute/TrivialPatches


Bug reporting
=============

The QEMU project uses Launchpad as its primary upstream bug tracker. Bugs
found when running code built from QEMU git or upstream released sources
should be reported via:

  https://bugs.launchpad.net/qemu/

If using QEMU via an operating system vendor pre-built binary package, it
is preferable to report bugs to the vendor's own bug tracker first. If
the bug is also known to affect latest upstream code, it can also be
reported via launchpad.

For additional information on bug reporting consult:

  http://qemu-project.org/Contribute/ReportABug


Contact
=======

The QEMU community can be contacted in a number of ways, with the two
main methods being email and IRC

 - qemu-devel@nongnu.org
   http://lists.nongnu.org/mailman/listinfo/qemu-devel
 - #qemu on irc.oftc.net

Information on additional methods of contacting the community can be
found online via the QEMU website:

  http://qemu-project.org/Contribute/StartHere

-- End