Merge tag 'tracing-pull-request' of https://gitlab.com/stefanha/qemu into staging

Pull request

This pull request contains Alex Bennée's vcpu trace events removal patches.

# -----BEGIN PGP SIGNATUR

Merge tag 'tracing-pull-request' of https://gitlab.com/stefanha/qemu into staging

Pull request

This pull request contains Alex Bennée's vcpu trace events removal patches.

# -----BEGIN PGP SIGNATURE-----
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# gpg: Signature made Thu 01 Jun 2023 08:06:43 AM PDT
# gpg: using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]

* tag 'tracing-pull-request' of https://gitlab.com/stefanha/qemu:
accel/tcg: include cs_base in our hash calculations
hw/9pfs: use qemu_xxhash4
tcg: remove the final vestiges of dstate
trace: remove control-vcpu.h
trace: remove code that depends on setting vcpu
qapi: make the vcpu parameters deprecated for 8.1
docs/deprecated: move QMP events bellow QMP command section
scripts/qapi: document the tool that generated the file
trace: remove vcpu_id from the TraceEvent structure
trace-events: remove the remaining vcpu trace events
*-user: remove the guest_user_syscall tracepoints

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

trace: remove code that depends on setting vcpu

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

trace: remove code that depends on setting vcpu

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>

show more ...

Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Wed 12 Oct 2016 09:43:03 BST
# gpg: using RSA key 0x9CA4ABB381AB73C8
# gpg

Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Wed 12 Oct 2016 09:43:03 BST
# gpg: using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/tracing-pull-request:
trace: Add missing execution mode of guest events
trace: introduce a formal group name for trace events
trace: pass trace-events to tracetool as a positional param
trace: push reading of events up a level to tracetool main
trace: rename _read_events to read_events
trace: get rid of generated-events.h/generated-events.c
trace: dynamically allocate event IDs at runtime
trace: dynamically allocate trace_dstate in CPUState
trace: provide mechanism for registering trace events
trace: don't abort qemu if ftrace can't be initialized
trace: emit name <-> ID mapping in simpletrace header
trace: remove the TraceEventID and TraceEventVCPUID enums
trace: give each trace event a named TraceEvent struct
trace: break circular dependency in event-internal.h
trace: remove duplicate control.h includes in generated-tracers.h
trace: remove global 'uint16 dstate[]' array
trace: remove some now unused functions
trace: convert code to use event iterators
trace: add trace event iterator APIs
trace: move colo trace events to net/ sub-directory

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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trace: remove global 'uint16 dstate[]' array

Instead of having a global dstate array, declare a single
'uint16 TRACE_${EVENT_NAME}_DSTATE' variable for each
trace event. Record a pointer to this var

trace: remove global 'uint16 dstate[]' array

Instead of having a global dstate array, declare a single
'uint16 TRACE_${EVENT_NAME}_DSTATE' variable for each
trace event. Record a pointer to this variable in the
TraceEvent struct too.

By turning trace_event_get_state_dynamic_by_id into a
macro, this still hits the fast path, and cache affinity
is ensured by declaring all the uint16 vars adjacent to
each other.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 1475588159-30598-7-git-send-email-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Wed 28 Sep 2016 22:30:45 BST
# gpg: using RSA key 0x9CA4ABB381AB73C8
# gpg

Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Wed 28 Sep 2016 22:30:45 BST
# gpg: using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/tracing-pull-request:
trace: Document the execution mode of guest events
trace: Add event "guest_cpu_reset"
trace: Add event "guest_cpu_enter"
trace: Properly initialize dynamic event states in hot-plugged vCPUs
trace: move hw/virtio/virtio-balloon.c trace points into correct file
trace: move hw/mem/pc-dimm.c trace points into correct file
trace: move util/qemu-coroutine*.c trace points into correct file
trace: move util/buffer.c trace points into correct file

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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trace: Properly initialize dynamic event states in hot-plugged vCPUs

Every time a vCPU is hot-plugged, it will "inherit" its tracing state
from the global state array. That is, if *any* existing vCP

trace: Properly initialize dynamic event states in hot-plugged vCPUs

Every time a vCPU is hot-plugged, it will "inherit" its tracing state
from the global state array. That is, if *any* existing vCPU has an
event enabled, new vCPUs will have too.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Message-id: 147428970768.15111.7664565956870423529.stgit@fimbulvetr.bsc.es
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Mon 05 Sep 2016 20:41:04 BST
# gpg: using RSA key 0x9CA4ABB381AB73C8
# gpg

Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Mon 05 Sep 2016 20:41:04 BST
# gpg: using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/tracing-pull-request:
trace: Avoid implicit bool->integer conversions
trace: Remove 'trace_events_dstate_init'
trace: add syslog tracing backend

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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trace: Avoid implicit bool->integer conversions

An explicit if/else is clearer than arithmetic assuming #true is 1,
while the compiler should be able to generate just as optimal code.

Signed-off-by

trace: Avoid implicit bool->integer conversions

An explicit if/else is clearer than arithmetic assuming #true is 1,
while the compiler should be able to generate just as optimal code.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Message-id: 147194273830.26836.5875729707953474838.stgit@fimbulvetr.bsc.es
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

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trace: Remove 'trace_events_dstate_init'

Removes the event state array used for early initialization. Since only
events with the "vcpu" property need a late initialization fixup,
threats their initi

trace: Remove 'trace_events_dstate_init'

Removes the event state array used for early initialization. Since only
events with the "vcpu" property need a late initialization fixup,
threats their initialization specially.

Assumes that the user won't touch the state of "vcpu" events between
early and late initialization (e.g., through QMP).

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Message-id: 147194273191.26836.14423079546263831356.stgit@fimbulvetr.bsc.es
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Mon 18 Jul 2016 22:59:55 BST
# gpg: using RSA key 0x9CA4ABB381AB73C8
# gpg

Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Mon 18 Jul 2016 22:59:55 BST
# gpg: using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/tracing-pull-request:
trace: Add QAPI/QMP interfaces to query and control per-vCPU tracing state
trace: Allow event name pattern in "info trace-events"
trace: Conditionally trace events based on their per-vCPU state
trace: Add per-vCPU tracing states for events with the 'vcpu' property
trace: Cosmetic changes on fast-path tracing
disas: Remove unused macro '_'
trace: Identify events with the 'vcpu' property
trace: [bsd-user] Commandline arguments to control tracing
trace: [linux-user] Commandline arguments to control tracing

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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trace: Add per-vCPU tracing states for events with the 'vcpu' property

Each vCPU gets a 'trace_dstate' bitmap to control the per-vCPU dynamic
tracing state of events with the 'vcpu' property.

Signe

trace: Add per-vCPU tracing states for events with the 'vcpu' property

Each vCPU gets a 'trace_dstate' bitmap to control the per-vCPU dynamic
tracing state of events with the 'vcpu' property.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...