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memory: Add tracepoint for dirty sync 

Trace at memory_region_sync_dirty_bitmap() for log_sync() or global_log_sync()
on memory regions.  One trace line should suffice when it finishes, so as to
estimate the time used for each log sync process.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20210817013706.30986-1-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Xu 2021-08-16 21:37:06 -04:00 committed by Paolo Bonzini
parent 142518bda5
commit fcb3ab341a
2 changed files with 3 additions and 0 deletions
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2
softmmu/memory.c
View File

@ -2154,6 +2154,7 @@ static void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
}
}
flatview_unref(view);
trace_memory_region_sync_dirty(mr ? mr->name : "(all)", listener->name, 0);
} else if (listener->log_sync_global) {
/*
* No matter whether MR is specified, what we can do here
@ -2161,6 +2162,7 @@ static void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
* sync in a finer granularity.
*/
listener->log_sync_global(listener);
trace_memory_region_sync_dirty(mr ? mr->name : "(all)", listener->name, 1);
}
}
}

1
softmmu/trace-events
View File

@ -15,6 +15,7 @@ memory_region_subpage_read(int cpu_index, void *mr, uint64_t offset, uint64_t va
memory_region_subpage_write(int cpu_index, void *mr, uint64_t offset, uint64_t value, unsigned size) "cpu %d mr %p offset 0x%"PRIx64" value 0x%"PRIx64" size %u"
memory_region_ram_device_read(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
memory_region_ram_device_write(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
memory_region_sync_dirty(const char *mr, const char *listener, int global) "mr '%s' listener '%s' synced (global=%d)"
flatview_new(void *view, void *root) "%p (root %p)"
flatview_destroy(void *view, void *root) "%p (root %p)"
flatview_destroy_rcu(void *view, void *root) "%p (root %p)"