[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH] memory: Replace DEBUG_UNASSIGNED printf calls by trace events
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH] memory: Replace DEBUG_UNASSIGNED printf calls by trace events |
Date: |
Fri, 20 Sep 2019 16:12:48 +0200 |
Now that the unassigned_access CPU hooks have been removed,
the unassigned_mem_read/write functions are only used for
debugging purpose.
Simplify by converting them to in-place trace events.
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
Based-on: <address@hidden>
https://lists.gnu.org/archive/html/qemu-devel/2019-09/msg04668.html
https://lists.gnu.org/archive/html/qemu-devel/2019-09/msg03705.html
I first wrote:
These functions are declared using the CPUReadMemoryFunc/
CPUWriteMemoryFunc prototypes. Since it is confusing to
have such prototype only use for debugging, convert them
to in-place trace events.
But it doesn't provide helpful information and is rather confusing.
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
memory.c | 24 +++---------------------
trace-events | 2 ++
2 files changed, 5 insertions(+), 21 deletions(-)
diff --git a/memory.c b/memory.c
index 93a05395cf..07e80a637a 100644
--- a/memory.c
+++ b/memory.c
@@ -35,8 +35,6 @@
#include "hw/boards.h"
#include "migration/vmstate.h"
-//#define DEBUG_UNASSIGNED
-
static unsigned memory_region_transaction_depth;
static bool memory_region_update_pending;
static bool ioeventfd_update_pending;
@@ -1272,23 +1270,6 @@ static void iommu_memory_region_initfn(Object *obj)
mr->is_iommu = true;
}
-static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
- unsigned size)
-{
-#ifdef DEBUG_UNASSIGNED
- printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
-#endif
- return 0;
-}
-
-static void unassigned_mem_write(void *opaque, hwaddr addr,
- uint64_t val, unsigned size)
-{
-#ifdef DEBUG_UNASSIGNED
- printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr,
val);
-#endif
-}
-
static bool unassigned_mem_accepts(void *opaque, hwaddr addr,
unsigned size, bool is_write,
MemTxAttrs attrs)
@@ -1437,7 +1418,8 @@ MemTxResult memory_region_dispatch_read(MemoryRegion *mr,
MemTxResult r;
if (!memory_region_access_valid(mr, addr, size, false, attrs)) {
- *pval = unassigned_mem_read(mr, addr, size);
+ trace_memory_region_invalid_read(size, addr);
+ *pval = 0; /* FIXME now this value shouldn't be accessed in guest */
return MEMTX_DECODE_ERROR;
}
@@ -1481,7 +1463,7 @@ MemTxResult memory_region_dispatch_write(MemoryRegion *mr,
unsigned size = memop_size(op);
if (!memory_region_access_valid(mr, addr, size, true, attrs)) {
- unassigned_mem_write(mr, addr, data, size);
+ trace_memory_region_invalid_write(size, addr, size << 1, data);
return MEMTX_DECODE_ERROR;
}
diff --git a/trace-events b/trace-events
index 823a4ae64e..83dbeb4b46 100644
--- a/trace-events
+++ b/trace-events
@@ -62,6 +62,8 @@ memory_region_tb_read(int cpu_index, uint64_t addr, uint64_t
value, unsigned siz
memory_region_tb_write(int cpu_index, uint64_t addr, uint64_t value, unsigned
size) "cpu %d addr 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_invalid_read(unsigned size, uint64_t addr) "invalid read size %u
addr 0x%"PRIx64
+memory_region_invalid_write(unsigned size, uint64_t addr, int fmt_width,
uint64_t value) "invalid write size %u addr 0x%"PRIx64" value 0x%0*"PRIx64
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)"
--
2.20.1
- [PATCH] memory: Replace DEBUG_UNASSIGNED printf calls by trace events,
Philippe Mathieu-Daudé <=