2017-07-29 00:46:05 +02:00
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# See docs/devel/tracing.txt for syntax documentation.
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2016-06-16 10:39:48 +02:00
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2019-03-14 19:09:26 +01:00
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# aio-posix.c
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2018-09-12 19:10:39 +02:00
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run_poll_handlers_begin(void *ctx, int64_t max_ns, int64_t timeout) "ctx %p max_ns %"PRId64 " timeout %"PRId64
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run_poll_handlers_end(void *ctx, bool progress, int64_t timeout) "ctx %p progress %d new timeout %"PRId64
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2017-02-13 14:52:18 +01:00
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poll_shrink(void *ctx, int64_t old, int64_t new) "ctx %p old %"PRId64" new %"PRId64
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poll_grow(void *ctx, int64_t old, int64_t new) "ctx %p old %"PRId64" new %"PRId64
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2020-03-05 18:08:06 +01:00
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poll_add(void *ctx, void *node, int fd, unsigned revents) "ctx %p node %p fd %d revents 0x%x"
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poll_remove(void *ctx, void *node, int fd) "ctx %p node %p fd %d"
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2017-02-13 14:52:18 +01:00
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2019-03-14 19:09:26 +01:00
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# async.c
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2017-02-13 14:52:19 +01:00
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aio_co_schedule(void *ctx, void *co) "ctx %p co %p"
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aio_co_schedule_bh_cb(void *ctx, void *co) "ctx %p co %p"
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2019-03-14 19:09:26 +01:00
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# thread-pool.c
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2017-02-13 14:52:18 +01:00
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thread_pool_submit(void *pool, void *req, void *opaque) "pool %p req %p opaque %p"
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thread_pool_complete(void *pool, void *req, void *opaque, int ret) "pool %p req %p opaque %p ret %d"
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thread_pool_cancel(void *req, void *opaque) "req %p opaque %p"
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2019-03-14 19:09:26 +01:00
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# buffer.c
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2016-09-14 19:03:41 +02:00
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buffer_resize(const char *buf, size_t olen, size_t len) "%s: old %zd, new %zd"
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buffer_move_empty(const char *buf, size_t len, const char *from) "%s: %zd bytes from %s"
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buffer_move(const char *buf, size_t len, const char *from) "%s: %zd bytes from %s"
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buffer_free(const char *buf, size_t len) "%s: capacity %zd"
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2019-03-14 19:09:29 +01:00
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# filemonitor-inotify.c
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2019-03-19 16:47:47 +01:00
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qemu_file_monitor_add_watch(void *mon, const char *dirpath, const char *filename, void *cb, void *opaque, int64_t id) "File monitor %p add watch dir='%s' file='%s' cb=%p opaque=%p id=%" PRId64
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qemu_file_monitor_remove_watch(void *mon, const char *dirpath, int64_t id) "File monitor %p remove watch dir='%s' id=%" PRId64
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2018-06-08 18:24:57 +02:00
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qemu_file_monitor_new(void *mon, int fd) "File monitor %p created fd=%d"
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qemu_file_monitor_enable_watch(void *mon, const char *dirpath, int id) "File monitor %p enable watch dir='%s' id=%u"
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qemu_file_monitor_disable_watch(void *mon, const char *dirpath, int id) "Fle monitor %p disable watch dir='%s' id=%u"
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qemu_file_monitor_event(void *mon, const char *dirpath, const char *filename, int mask, unsigned int id) "File monitor %p event dir='%s' file='%s' mask=0x%x id=%u"
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2019-03-19 16:47:47 +01:00
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qemu_file_monitor_dispatch(void *mon, const char *dirpath, const char *filename, int ev, void *cb, void *opaque, int64_t id) "File monitor %p dispatch dir='%s' file='%s' ev=%d cb=%p opaque=%p id=%" PRId64
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2018-06-08 18:24:57 +02:00
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2019-03-14 19:09:26 +01:00
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# qemu-coroutine.c
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2017-04-10 14:06:12 +02:00
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qemu_aio_coroutine_enter(void *ctx, void *from, void *to, void *opaque) "ctx %p from %p to %p opaque %p"
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2016-09-14 19:03:42 +02:00
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qemu_coroutine_yield(void *from, void *to) "from %p to %p"
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qemu_coroutine_terminate(void *co) "self %p"
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2019-03-14 19:09:26 +01:00
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# qemu-coroutine-lock.c
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2017-02-13 19:12:39 +01:00
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qemu_co_mutex_lock_uncontended(void *mutex, void *self) "mutex %p self %p"
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2016-09-14 19:03:42 +02:00
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qemu_co_mutex_lock_entry(void *mutex, void *self) "mutex %p self %p"
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qemu_co_mutex_lock_return(void *mutex, void *self) "mutex %p self %p"
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qemu_co_mutex_unlock_entry(void *mutex, void *self) "mutex %p self %p"
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qemu_co_mutex_unlock_return(void *mutex, void *self) "mutex %p self %p"
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2019-03-14 19:09:29 +01:00
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# oslib-posix.c
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2020-08-06 16:13:34 +02:00
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# oslib-win32.c
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2016-06-16 10:39:48 +02:00
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qemu_memalign(size_t alignment, size_t size, void *ptr) "alignment %zu size %zu ptr %p"
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qemu_anon_ram_alloc(size_t size, void *ptr) "size %zu ptr %p"
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qemu_vfree(void *ptr) "ptr %p"
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qemu_anon_ram_free(void *ptr, size_t size) "ptr %p size %zu"
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2019-03-14 19:09:26 +01:00
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# hbitmap.c
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2016-06-16 10:39:48 +02:00
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hbitmap_iter_skip_words(const void *hb, void *hbi, uint64_t pos, unsigned long cur) "hb %p hbi %p pos %"PRId64" cur 0x%lx"
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hbitmap_reset(void *hb, uint64_t start, uint64_t count, uint64_t sbit, uint64_t ebit) "hb %p items %"PRIu64",%"PRIu64" bits %"PRIu64"..%"PRIu64
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hbitmap_set(void *hb, uint64_t start, uint64_t count, uint64_t sbit, uint64_t ebit) "hb %p items %"PRIu64",%"PRIu64" bits %"PRIu64"..%"PRIu64
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2017-01-12 19:07:54 +01:00
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2019-03-14 19:09:26 +01:00
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# lockcnt.c
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2017-01-12 19:07:54 +01:00
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lockcnt_fast_path_attempt(const void *lockcnt, int expected, int new) "lockcnt %p fast path %d->%d"
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lockcnt_fast_path_success(const void *lockcnt, int expected, int new) "lockcnt %p fast path %d->%d succeeded"
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lockcnt_unlock_attempt(const void *lockcnt, int expected, int new) "lockcnt %p unlock %d->%d"
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lockcnt_unlock_success(const void *lockcnt, int expected, int new) "lockcnt %p unlock %d->%d succeeded"
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lockcnt_futex_wait_prepare(const void *lockcnt, int expected, int new) "lockcnt %p preparing slow path %d->%d"
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lockcnt_futex_wait(const void *lockcnt, int val) "lockcnt %p waiting on %d"
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lockcnt_futex_wait_resume(const void *lockcnt, int new) "lockcnt %p after wait: %d"
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lockcnt_futex_wake(const void *lockcnt) "lockcnt %p waking up one waiter"
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trace: add qemu mutex lock and unlock trace events
These trace events were very useful to help me to understand and find a
reordering issue in vfio, for example:
qemu_mutex_lock locked mutex 0x10905ad8
vfio_region_write (0001:03:00.0:region1+0xc0, 0x2020c, 4)
qemu_mutex_unlock unlocked mutex 0x10905ad8
qemu_mutex_lock locked mutex 0x10905ad8
vfio_region_write (0001:03:00.0:region1+0xc4, 0xa0000, 4)
qemu_mutex_unlock unlocked mutex 0x10905ad8
that also helped me to see the desired result after the fix:
qemu_mutex_lock locked mutex 0x10905ad8
vfio_region_write (0001:03:00.0:region1+0xc0, 0x2000c, 4)
vfio_region_write (0001:03:00.0:region1+0xc4, 0xb0000, 4)
qemu_mutex_unlock unlocked mutex 0x10905ad8
So it could be a good idea to have these traces implemented. It's worth
mentioning that they should be surgically enabled during the debugging,
otherwise it can flood the trace logs with lock/unlock messages.
How to use it:
trace-event qemu_mutex_lock on|off
trace-event qemu_mutex_unlock on|off
or
trace-event qemu_mutex* on|off
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Message-Id: <1493054398-26013-1-git-send-email-joserz@linux.vnet.ibm.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
[Also handle trylock, cond_wait and win32; trace "unlocked" while still
in the critical section, so that "unlocked" always comes before the
next "locked" tracepoint. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-04-24 19:19:58 +02:00
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2019-08-19 14:48:21 +02:00
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# qemu-sockets.c
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socket_listen(int num) "backlog: %d"
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2019-03-14 19:09:29 +01:00
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# qemu-thread-common.h
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2020-08-06 16:13:34 +02:00
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# qemu-thread-posix.c
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# qemu-thread-win32.c
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2018-01-11 09:27:16 +01:00
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qemu_mutex_lock(void *mutex, const char *file, const int line) "waiting on mutex %p (%s:%d)"
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qemu_mutex_locked(void *mutex, const char *file, const int line) "taken mutex %p (%s:%d)"
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qemu_mutex_unlock(void *mutex, const char *file, const int line) "released mutex %p (%s:%d)"
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2018-01-16 07:08:54 +01:00
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2019-03-14 19:09:26 +01:00
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# vfio-helpers.c
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2018-01-16 07:08:54 +01:00
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qemu_vfio_dma_reset_temporary(void *s) "s %p"
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qemu_vfio_ram_block_added(void *s, void *p, size_t size) "s %p host %p size 0x%zx"
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qemu_vfio_ram_block_removed(void *s, void *p, size_t size) "s %p host %p size 0x%zx"
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qemu_vfio_find_mapping(void *s, void *p) "s %p host %p"
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2020-08-20 19:10:06 +02:00
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qemu_vfio_new_mapping(void *s, void *host, size_t size, int index, uint64_t iova) "s %p host %p size 0x%zx index %d iova 0x%"PRIx64
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qemu_vfio_do_mapping(void *s, void *host, size_t size, uint64_t iova) "s %p host %p size 0x%zx iova 0x%"PRIx64
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qemu_vfio_dma_map(void *s, void *host, size_t size, bool temporary, uint64_t *iova) "s %p host %p size 0x%zx temporary %d iova %p"
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2018-01-16 07:08:54 +01:00
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qemu_vfio_dma_unmap(void *s, void *host) "s %p host %p"
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