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[PATCH v3 0/3] tcg: add perfmap and jitdump
From: |
Ilya Leoshkevich |
Subject: |
[PATCH v3 0/3] tcg: add perfmap and jitdump |
Date: |
Wed, 11 Jan 2023 02:47:02 +0100 |
v2:
https://lists.gnu.org/archive/html/qemu-devel/2022-11/msg02385.html
https://lists.gnu.org/archive/html/qemu-devel/2023-01/msg01026.html
v2 -> v3:
* Enable only for CONFIG_LINUX (Alex).
* Use qemu_get_thread_id() instead of gettid() (Alex).
* Fix CI (Alex).
https://gitlab.com/iii-i/qemu/-/pipelines/743684604
* Drop unnecessary #includes (Alex).
* Drop the constification change (Alex/Richard).
* Split debuginfo support into a separate patch.
* Fix partial perfmap/jitdump files when terminating due to a signal.
* Fix debuginfo strings being accessed outside of debuginfo lock.
* Fix address resolution with TARGET_TB_PCREL.
* Add DEBUGINFOD_URLS= to the doc; without it perf inject is
unacceptably slow.
* Note: it's better to test this with the latest perf
(6.2.rc3.g7dd4b804e080 worked fine for me). There has been at least
one breakage in the JIT area recently (fixed by 6d518ac7be62).
v1:
https://lists.nongnu.org/archive/html/qemu-devel/2022-10/msg01824.html
https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg01073.html
v1 -> v2:
* Use QEMU_LOCK_GUARD (Alex).
* Handle TARGET_TB_PCREL (Alex).
* Support ELF -kernels, add a note about this (Alex). Tested with
qemu-system-x86_64 and Linux kernel - it's not fast, but it works.
* Minor const correctness and style improvements.
Ilya Leoshkevich (3):
linux-user: Clean up when exiting due to a signal
accel/tcg: Add debuginfo support
tcg: add perfmap and jitdump
accel/tcg/debuginfo.c | 96 ++++++++++
accel/tcg/debuginfo.h | 77 ++++++++
accel/tcg/meson.build | 2 +
accel/tcg/perf.c | 366 ++++++++++++++++++++++++++++++++++++++
accel/tcg/perf.h | 49 +++++
accel/tcg/translate-all.c | 8 +
docs/devel/tcg.rst | 23 +++
hw/core/loader.c | 5 +
linux-user/elfload.c | 3 +
linux-user/exit.c | 2 +
linux-user/main.c | 15 ++
linux-user/meson.build | 1 +
linux-user/signal.c | 8 +-
meson.build | 8 +
qemu-options.hx | 20 +++
softmmu/vl.c | 11 ++
tcg/tcg.c | 2 +
17 files changed, 693 insertions(+), 3 deletions(-)
create mode 100644 accel/tcg/debuginfo.c
create mode 100644 accel/tcg/debuginfo.h
create mode 100644 accel/tcg/perf.c
create mode 100644 accel/tcg/perf.h
--
2.39.0
- [PATCH v3 0/3] tcg: add perfmap and jitdump,
Ilya Leoshkevich <=