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trace: split subpage MMIOs into their own trace events.

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Previously, a single MMIO could trigger the memory_region_ops tracepoint twice:
once on its way into subpage ops, then later on its way into the model's ops.

Also, the fields previously called "addr" are actually offsets into the memory
region. Rename them to "offset" while we're editing the tracepoint definitions.

Signed-off-by: Hollis Blanchard <hollis_blanchard@mentor.com>
Message-id: 1454976185-30095-2-git-send-email-hollis_blanchard@mentor.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Hollis Blanchard 2016-02-08 16:03:04 -08:00 committed by Stefan Hajnoczi
parent 2c140f5f2c
commit 23d92d68e7
2 changed files with 34 additions and 8 deletions
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36
memory.c
View File

@ -383,7 +383,11 @@ static MemTxResult memory_region_oldmmio_read_accessor(MemoryRegion *mr,
uint64_t tmp;
tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
trace_memory_region_ops_read(mr, addr, tmp, size);
if (mr->subpage) {
trace_memory_region_subpage_read(mr, addr, tmp, size);
} else {
trace_memory_region_ops_read(mr, addr, tmp, size);
}
*value |= (tmp & mask) << shift;
return MEMTX_OK;
}
@ -399,7 +403,11 @@ static MemTxResult memory_region_read_accessor(MemoryRegion *mr,
uint64_t tmp;
tmp = mr->ops->read(mr->opaque, addr, size);
trace_memory_region_ops_read(mr, addr, tmp, size);
if (mr->subpage) {
trace_memory_region_subpage_read(mr, addr, tmp, size);
} else {
trace_memory_region_ops_read(mr, addr, tmp, size);
}
*value |= (tmp & mask) << shift;
return MEMTX_OK;
}
@ -416,7 +424,11 @@ static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr,
MemTxResult r;
r = mr->ops->read_with_attrs(mr->opaque, addr, &tmp, size, attrs);
trace_memory_region_ops_read(mr, addr, tmp, size);
if (mr->subpage) {
trace_memory_region_subpage_read(mr, addr, tmp, size);
} else {
trace_memory_region_ops_read(mr, addr, tmp, size);
}
*value |= (tmp & mask) << shift;
return r;
}
@ -432,7 +444,11 @@ static MemTxResult memory_region_oldmmio_write_accessor(MemoryRegion *mr,
uint64_t tmp;
tmp = (*value >> shift) & mask;
trace_memory_region_ops_write(mr, addr, tmp, size);
if (mr->subpage) {
trace_memory_region_subpage_write(mr, addr, tmp, size);
} else {
trace_memory_region_ops_write(mr, addr, tmp, size);
}
mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
return MEMTX_OK;
}
@ -448,7 +464,11 @@ static MemTxResult memory_region_write_accessor(MemoryRegion *mr,
uint64_t tmp;
tmp = (*value >> shift) & mask;
trace_memory_region_ops_write(mr, addr, tmp, size);
if (mr->subpage) {
trace_memory_region_subpage_write(mr, addr, tmp, size);
} else {
trace_memory_region_ops_write(mr, addr, tmp, size);
}
mr->ops->write(mr->opaque, addr, tmp, size);
return MEMTX_OK;
}
@ -464,7 +484,11 @@ static MemTxResult memory_region_write_with_attrs_accessor(MemoryRegion *mr,
uint64_t tmp;
tmp = (*value >> shift) & mask;
trace_memory_region_ops_write(mr, addr, tmp, size);
if (mr->subpage) {
trace_memory_region_subpage_write(mr, addr, tmp, size);
} else {
trace_memory_region_ops_write(mr, addr, tmp, size);
}
return mr->ops->write_with_attrs(mr->opaque, addr, tmp, size, attrs);
}

6
trace-events
View File

@ -1620,8 +1620,10 @@ disable exec_tb_exit(void *next_tb, unsigned int flags) "tb:%p flags=%x"
translate_block(void *tb, uintptr_t pc, uint8_t *tb_code) "tb:%p, pc:0x%"PRIxPTR", tb_code:%p"
# memory.c
memory_region_ops_read(void *mr, uint64_t addr, uint64_t value, unsigned size) "mr %p addr %#"PRIx64" value %#"PRIx64" size %u"
memory_region_ops_write(void *mr, uint64_t addr, uint64_t value, unsigned size) "mr %p addr %#"PRIx64" value %#"PRIx64" size %u"
memory_region_ops_read(void *mr, uint64_t offset, uint64_t value, unsigned size) "mr %p offset %#"PRIx64" value %#"PRIx64" size %u"
memory_region_ops_write(void *mr, uint64_t offset, uint64_t value, unsigned size) "mr %p offset %#"PRIx64" value %#"PRIx64" size %u"
memory_region_subpage_read(void *mr, uint64_t offset, uint64_t value, unsigned size) "mr %p offset %#"PRIx64" value %#"PRIx64" size %u"
memory_region_subpage_write(void *mr, uint64_t offset, uint64_t value, unsigned size) "mr %p offset %#"PRIx64" value %#"PRIx64" size %u"
# qom/object.c
object_dynamic_cast_assert(const char *type, const char *target, const char *file, int line, const char *func) "%s->%s (%s:%d:%s)"