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2024-06-04trace: Remove deprecated 'vcpu' field from QMP trace eventsPhilippe Mathieu-Daudé
'vcpu' fields are deprecated since commit 5485e52a33 ("qapi: make the vcpu parameters deprecated for 8.1"), time to remove them. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20240530071548.20074-3-philmd@linaro.org>
2023-12-27tracing: install trace events file only if necessaryCarlos Santos
It is not useful when configuring with --enable-trace-backends=nop. Signed-off-by: Carlos Santos <casantos@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-ID: <20230408010410.281263-1-casantos@redhat.com>
2023-10-06trace/control: Clean up global variable shadowingPhilippe Mathieu-Daudé
Fix: trace/control.c:288:34: error: declaration shadows a variable in the global scope [-Werror,-Wshadow] void trace_opt_parse(const char *optarg) ^ /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here extern char *optarg; /* getopt(3) external variables */ ^ Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20231004120019.93101-17-philmd@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-06-20meson: Replace softmmu_ss -> system_ssPhilippe Mathieu-Daudé
We use the user_ss[] array to hold the user emulation sources, and the softmmu_ss[] array to hold the system emulation ones. Hold the latter in the 'system_ss[]' array for parity with user emulation. Mechanical change doing: $ sed -i -e s/softmmu_ss/system_ss/g $(git grep -l softmmu_ss) Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230613133347.82210-10-philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-06-01trace: remove control-vcpu.hAlex Bennée
Now we no longer have vcpu controlled trace events we can excise the code that allows us to query its status. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20230526165401.574474-9-alex.bennee@linaro.org Message-Id: <20230524133952.3971948-8-alex.bennee@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-06-01trace: remove code that depends on setting vcpuAlex Bennée
Now we no longer have any events that are for vcpus we can start excising the code from the trace control. As the vcpu parameter is encoded as part of QMP we just stub out the has_vcpu/vcpu parameters rather than alter the API. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20230526165401.574474-8-alex.bennee@linaro.org Message-Id: <20230524133952.3971948-7-alex.bennee@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-06-01trace: remove vcpu_id from the TraceEvent structureAlex Bennée
This does involve temporarily stubbing out some helper functions before we excise the rest of the code. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20230526165401.574474-4-alex.bennee@linaro.org Message-Id: <20230524133952.3971948-4-alex.bennee@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-06-01trace-events: remove the remaining vcpu trace eventsAlex Bennée
While these are all in helper functions being designated vcpu events complicates the removal of the dynamic vcpu state code. TCG plugins allow you to instrument vcpu_[init|exit|idle]. We rename cpu_reset and make it a normal trace point. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20230526165401.574474-3-alex.bennee@linaro.org Message-Id: <20230524133952.3971948-3-alex.bennee@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-05-11cpu: expose qemu_cpu_list_lock for lock-guard useJamie Iles
Expose qemu_cpu_list_lock globally so that we can use WITH_QEMU_LOCK_GUARD and QEMU_LOCK_GUARD to simplify a few code paths now and in future. Signed-off-by: Jamie Iles <quic_jiles@quicinc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230427020925.51003-2-quic_jiles@quicinc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-02-27trace: Do not try to include QMP commands in user emulation binariesPhilippe Mathieu-Daudé
QMP is not available on user emulation; there is not monitor. Besides, since commit a0e61807a3 ("qapi: Remove QMP events and commands from user-mode builds") we don't generate the qapi-commands-trace.h header in a user-emulation-only build. Remove the QMP trace commands from qemu-user binaries. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Acked-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20221220150417.26751-1-philmd@linaro.org>
2023-02-04trace: Move HMP commands from monitor/ to trace/Markus Armbruster
This moves these commands from MAINTAINERS sections "Human Monitor (HMP)" and "QMP" to "Tracing". Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20230124121946.1139465-9-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-10-04include/hw/core: Create struct CPUJumpCacheRichard Henderson
Wrap the bare TranslationBlock pointer into a structure. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-03-22error: use GLib to remember the program nameMarc-André Lureau
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
2022-02-09tracing: excise the tcg related from tracetoolAlex Bennée
Now we have no TCG trace events and no longer handle them in the code we can remove the handling from the tracetool to generate them. vcpu tracing is still available although the existing syscall event is an exercise in redundancy (plugins and -strace can also get the information). Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Cc: Luis Vilanova <vilanova@imperial.ac.uk> Cc: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20220204204335.1689602-21-alex.bennee@linaro.org>
2022-02-09tracing: remove the trace-tcg includes from the buildAlex Bennée
Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Cc: Luis Vilanova <vilanova@imperial.ac.uk> Cc: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220204204335.1689602-20-alex.bennee@linaro.org>
2022-01-27meson: generate trace events for qmp commandsVladimir Sementsov-Ogievskiy
1. Use --gen-trace when generate qmp commands 2. Add corresponding .trace-events files as outputs in qapi_files custom target 3. Define global qapi_trace_events list of .trace-events file targets, to fill in trace/qapi.build and to use in trace/meson.build 4. In trace/meson.build use the new array as an additional source of .trace_events files to be processed Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20220126161130.3240892-5-vsementsov@virtuozzo.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2021-10-14trace: move configuration from configure to MesonPaolo Bonzini
Cc: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20211007130829.632254-4-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-10-14trace: simple: pass trace_file unmodified to config-host.hPaolo Bonzini
Add the suffix directly in trace/simple.c, so that quoting is done properly by Meson. Cc: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20211007130829.632254-3-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-10-05trace: Split guest_mem_beforeRichard Henderson
There is no point in encoding load/store within a bit of the memory trace info operand. Represent atomic operations as a single read-modify-write tracepoint. Use MemOpIdx instead of inventing a form specifically for traces. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-05trace/mem: Pass MemOpIdx to trace_mem_get_infoRichard Henderson
We (will) often have the complete MemOpIdx handy, so use that. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-05meson: switch minimum meson version to 0.58.2, minimum recommended to 0.59.2Paolo Bonzini
Meson 0.58.2 does not need b_staticpic=$pie anymore, and has stabilized the keyval module. Remove the workaround and use a few replacements for features deprecated in the 0.57.0 release cycle. One feature that we would like to use is passing dependencies to summary. However, that was broken in 0.59.0 and 0.59.1. Therefore, use the embedded Meson if the host has anything older than 0.59.2, but allow --meson= to use 0.58.2. Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-09-13meson: look up cp and dtrace with find_program()Paolo Bonzini
Avoid that meson prints a "Program xyz found" test once per custom_target. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-21trace: Fold mem-internal.h into mem.hRichard Henderson
Since the last thing that mem.h does is include mem-internal.h, the symbols are not actually private. Tested-by: Cole Robinson <crobinso@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-07-12trace, lttng: require .pc filesPaolo Bonzini
The next version of lttng-libs will not require liburcu at run time anymore. Therefore, it is expected that distros will not include the urcubp libraries anymore when installing lttng-ust-devel. To avoid future problems, just require pkg-config to detect lttng-ust. The .pc files for lttng-ust correctly include liburcubp.a for static builds, and have always done since pkg-config files were added in 2011. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 20210712155710.520889-1-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-07-12trace/simple: add st_init_groupGerd Hoffmann
Add helper function and call it for each trace event group added. Makes sure that events added at module load time are initialized properly. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20210601132414.432430-6-kraxel@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-07-12trace/simple: pass iter to st_write_event_mappingGerd Hoffmann
Pass an iter to st_write_event_mapping, so the function can interate different things depending on how we initialize the iter. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20210601132414.432430-5-kraxel@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-07-12trace: add trace_event_iter_init_groupGerd Hoffmann
This allows to interate over an event group. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20210601132414.432430-4-kraxel@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-07-12trace: iter init tweaksGerd Hoffmann
Rename trace_event_iter_init() to trace_event_iter_init_pattern(), add trace_event_iter_init_all() for interating over all events. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20210601132414.432430-3-kraxel@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-03-06trace: fix "-trace file=..."Paolo Bonzini
Because trace_opt_parse always deletes the options it has parsed, trace_init_file's call to qemu_find_opts_singleton always creates an empty -trace option group. Therefore, the subsequent qemu_opt_get(opts, "file") always returns NULL. To fix this, save the last "-trace file=..." option in a global variable and use it later in trace_init_file. This is similar to what was done before commit 92eecfff32 ("trace: remove argument from trace_init_file", 2020-11-11), except contained within trace/control.c and without memory leaks. Fixes: 92eecfff32 ("trace: remove argument from trace_init_file", 2020-11-11) Cc: stefanha@redhat.com Reported-by: armbru@redhat.com Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20210209145759.141231-2-pbonzini@redhat.com>
2021-02-01trace: add meson custom_target() depend_files for tracetoolStefan Hajnoczi
Re-generate tracetool output when the tracetool source code changes. Use the same approach as qapi_gen_depends and introduce a tracetool_depends files list so meson is aware of the dependencies. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 20210125110958.214017-1-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-01-06Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into ↵Peter Maydell
staging From Alex's pull request: * improve cross-build KVM coverage * new --without-default-features configure flag * add __repr__ for ConsoleSocket for debugging * build tcg tests with -Werror * test 32 bit builds with fedora * remove last traces of debian9 * hotfix for centos8 powertools repo * Move lots of feature detection code to meson (Alex, myself) * CFI and LTO support (Daniele) * test-char dangling pointer (Eduardo) * Build system and win32 fixes (Marc-André) * Initialization fixes (myself) * TCG include cleanup (Richard, myself) * x86 'int N' fix (Peter) # gpg: Signature made Wed 06 Jan 2021 09:21:25 GMT # gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83 # gpg: issuer "pbonzini@redhat.com" # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full] # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full] # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini-gitlab/tags/for-upstream: (52 commits) win32: drop fd registration to the main-loop on setting non-block configure: move tests/qemu-iotests/common.env generation to meson meson.build: convert --with-default-devices to meson libattr: convert to meson cap_ng: convert to meson virtfs: convert to meson seccomp: convert to meson zstd: convert to meson lzfse: convert to meson snappy: convert to meson lzo: convert to meson rbd: convert to meson libnfs: convert to meson libiscsi: convert to meson bzip2: convert to meson glusterfs: convert to meson curl: convert to meson curl: remove compatibility code, require 7.29.0 brlapi: convert to meson configure: remove CONFIG_FILEVERSION and CONFIG_PRODUCTVERSION ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org> # Conflicts: # trace/meson.build
2021-01-04tracetool: add output filename command-line argumentStefan Hajnoczi
The tracetool.py script writes to stdout. This means the output filename is not available to the script. Add the output filename to the command-line so that the script has access to the filename. This also simplifies the tracetool.py invocation. It's no longer necessary to use meson's custom_build(capture : true) to save output. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20200827142915.108730-2-stefanha@redhat.com>
2021-01-04trace: Send "-d trace:help" output to stdoutDoug Evans
... for consistency with "-d help". Signed-off-by: Doug Evans <dje@google.com> Message-id: 20201125215245.3514695-1-dje@google.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-01-02trace: do not include TCG helper tracepoints in no-TCG buildsPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-19qapi: Use QAPI_LIST_PREPEND() where possibleEric Blake
Anywhere we create a list of just one item or by prepending items (typically because order doesn't matter), we can use QAPI_LIST_PREPEND(). But places where we must keep the list in order by appending remain open-coded until later patches. Note that as a side effect, this also performs a cleanup of two minor issues in qga/commands-posix.c: the old code was performing new = g_malloc0(sizeof(*ret)); which 1) is confusing because you have to verify whether 'new' and 'ret' are variables with the same type, and 2) would conflict with C++ compilation (not an actual problem for this file, but makes copy-and-paste harder). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20201113011340.463563-5-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> [Straightforward conflicts due to commit a8aa94b5f8 "qga: update schema for guest-get-disks 'dependents' field" and commit a10b453a52 "target/mips: Move mips_cpu_add_definition() from helper.c to cpu.c" resolved. Commit message tweaked.] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-11-19trace: use STAP_SDT_V2 to work around symbol visibilityStefan Hajnoczi
QEMU binaries no longer launch successfully with recent SystemTap releases. This is because modular QEMU builds link the sdt semaphores into the main binary instead of into the shared objects where they are used. The symbol visibility of semaphores is 'hidden' and the dynamic linker prints an error during module loading: $ ./configure --enable-trace-backends=dtrace --enable-modules ... ... Failed to open module: /builddir/build/BUILD/qemu-4.2.0/s390x-softmmu/../block-curl.so: undefined symbol: qemu_curl_close_semaphore The long-term solution is to generate per-module dtrace .o files and link them into the module instead of the main binary. In the short term we can define STAP_SDT_V2 so dtrace(1) produces a .o file with 'default' symbol visibility instead of 'hidden'. This workaround is small and easier to merge for QEMU 5.2 and downstream backports. Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1898700 Cc: wcohen@redhat.com Cc: fche@redhat.com Cc: kraxel@redhat.com Cc: rjones@redhat.com Cc: ddepaula@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Miroslav Rezanina <mrezanin@redhat.com> Message-id: 20201119141457.844452-1-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-11-11trace: remove argument from trace_init_filePaolo Bonzini
It is not needed, all the callers are just saving what was retrieved from -trace and trace_init_file can retrieve it on its own. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 20201102115841.4017692-1-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-10-26trace/simple: Enable tracing on startup only if the user specifies a trace ↵Josh DuBois
option Tracing can be enabled at the command line or via the monitor. Command-line trace options are recorded during trace_opt_parse(), but tracing is not enabled until the various front-ends later call trace_init_file(). If the user passes a trace option on the command-line, remember that and enable tracing during trace_init_file(). Otherwise, trace_init_file() should record the trace file specified by the frontend and avoid enabling traces until the user requests them via the monitor. This fixes 1b7157be3a8c4300fc8044d40f4b2e64a152a1b4 and also db25d56c014aa1a96319c663e0a60346a223b31e, by allowing the user to enable traces on the command line and also avoiding unwanted trace-<pid> files when the user has not asked for them. Fixes: 1b7157be3a8c4300fc8044d40f4b2e64a152a1b4 Signed-off-by: Josh DuBois <josh@joshdubois.com> Message-id: 20200816174610.20253-1-josh@joshdubois.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-10-09monitor: Use getter/setter functions for cur_monKevin Wolf
cur_mon really needs to be coroutine-local as soon as we move monitor command handlers to coroutines and let them yield. As a first step, just remove all direct accesses to cur_mon so that we can implement this in the getter function later. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201005155855.256490-4-kwolf@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-09-30meson: clean up build_by_defaultPaolo Bonzini
Build all executables by default except for the known-broken ones. This also allows running qemu-iotests without manually building socket_scm_helper. Reported-by: Max Reitz <mreitz@redhat.com> Tested-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-09-01meson: use meson datadir instead of qemu_datadirMarc-André Lureau
When cross-compiling, by default qemu_datadir is 'c:\Program Files\QEMU', which is not recognized as being an absolute path, and meson will end up adding the prefix again. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20200826110419.528931-6-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-08-27meson: Don't make object files for dtrace on macOSRoman Bolshakov
dtrace on macOS uses unresolved symbols with a special prefix to define probes [1], only headers should be generated for USDT (dtrace(1)). But it doesn't support backwards compatible no-op -G flag [2] and implicit build rules fail. 1. https://markmail.org/message/6grq2ygr5nwdwsnb 2. https://markmail.org/message/5xrxt2w5m42nojkz Cc: Daniel P. Berrangé <berrange@redhat.com> Cc: Cameron Esfahani <dirty@apple.com> Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-08-21meson: convert systemtap filesMarc-André Lureau
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-08-21meson: convert trace/Marc-André Lureau
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-08-21meson: add remaining generated tcg trace helpersMarc-André Lureau
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-08-21libqemuutil, qapi, trace: convert to mesonPaolo Bonzini
This shows how to do some "computations" in meson.build using its array and dictionary data structures, and also a basic usage of the sourceset module for conditional compilation. Notice the new "if have_system" part of util/meson.build, which fixes a bug in the old build system was buggy: util/dbus.c was built even for non-softmmu builds, but the dependency on -lgio was lost when the linking was done through libqemuutil.a. Because all of its users required gio otherwise, the bug was hidden. Meson instead propagates libqemuutil's dependencies down to its users, and shows the problem. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-08-21trace: switch position of headers to what Meson requiresPaolo Bonzini
Meson doesn't enjoy the same flexibility we have with Make in choosing the include path. In particular the tracing headers are using $(build_root)/$(<D). In order to keep the include directives unchanged, the simplest solution is to generate headers with patterns like "trace/trace-audio.h" and place forwarding headers in the source tree such that for example "audio/trace.h" includes "trace/trace-audio.h". This patch is too ugly to be applied to the Makefiles now. It's only a way to separate the changes to the tracing header files from the Meson rewrite of the tracing logic. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-07-29trace/simple: Allow enabling simple traces from command lineJosh DuBois
The simple trace backend is enabled / disabled with a call to st_set_trace_file_enabled(). When initializing tracing from the command-line, this must be enabled on startup. (Prior to db25d56c014aa1a9, command-line initialization of simple trace worked because every call to st_set_trace_file enabled tracing.) Fixes: db25d56c014aa1a96319c663e0a60346a223b31e Signed-off-by: Josh DuBois <josh@joshdubois.com> Message-id: 20200723053359.256928-1-josh@joshdubois.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-06-24trace/simple: Fix unauthorized enableMarkus Armbruster
st_set_trace_file() accidentally enables tracing. It's called unconditionally during startup, which is why QEMU built with the simple trace backend always writes a trace file "trace-$PID". This has been broken for quite a while. I didn't track down the exact commit. Fix st_set_trace_file() to restore the state. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20200527065613.25322-1-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-02-25tracing: only allow -trace to override -D if setAlex Bennée
Otherwise any -D settings the user may have made get ignored. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Robert Foley <robert.foley@linaro.org> Message-Id: <20200225124710.14152-10-alex.bennee@linaro.org>
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