[04/23] tracepoints: move physmem trace points

Commit Message

Alex Bennée June 28, 2024, 12:42 p.m. UTC

They don't need to be in the global trace-events file and can have a
local trace header. Also add address_space_map tracepoint for tracking
mapping behaviour.

Signed-off-by: Alex Bennée <[e-mail]>
---
 system/physmem.c    | 6 ++++--
 system/trace-events | 6 ++++++
 trace-events        | 5 -----
 3 files changed, 10 insertions(+), 7 deletions(-)

Comments

Richard Henderson June 28, 2024, 6:07 p.m. UTC | #1

On 6/28/24 05:42, Alex Bennée wrote:
> @@ -1885,7 +1885,7 @@ static void ram_block_add(RAMBlock *new_block, Error **errp)
>       } else { /* list is empty */
>           QLIST_INSERT_HEAD_RCU(&ram_list.blocks, new_block, next);
>       }
> -    ram_list.mru_block = NULL;
> +    qatomic_rcu_set(&ram_list.mru_block, NULL);
>   
>       /* Write list before version */
>       smp_wmb();

This is unrelated to tracepoints.

Otherwise,
Reviewed-by: Richard Henderson <[e-mail]>


r~

Patch

diff --git a/system/physmem.c b/system/physmem.c
index 33d09f7571..17c9c70f97 100644
--- a/system/physmem.c
+++ b/system/physmem.c
@@ -53,7 +53,7 @@ 
 #include "sysemu/hostmem.h"
 #include "sysemu/hw_accel.h"
 #include "sysemu/xen-mapcache.h"
-#include "trace/trace-root.h"
+#include "trace.h"
 
 #ifdef CONFIG_FALLOCATE_PUNCH_HOLE
 #include <linux/falloc.h>
@@ -1885,7 +1885,7 @@  static void ram_block_add(RAMBlock *new_block, Error **errp)
     } else { /* list is empty */
         QLIST_INSERT_HEAD_RCU(&ram_list.blocks, new_block, next);
     }
-    ram_list.mru_block = NULL;
+    qatomic_rcu_set(&ram_list.mru_block, NULL);
 
     /* Write list before version */
     smp_wmb();
@@ -3193,6 +3193,8 @@  void *address_space_map(AddressSpace *as,
     MemoryRegion *mr;
     FlatView *fv;
 
+    trace_address_space_map(as, addr, len, is_write, *(uint32_t *) &attrs);
+
     if (len == 0) {
         return NULL;
     }
diff --git a/system/trace-events b/system/trace-events
index 69c9044151..2ed1d59b1f 100644
--- a/system/trace-events
+++ b/system/trace-events
@@ -21,6 +21,12 @@  flatview_destroy(void *view, void *root) "%p (root %p)"
 flatview_destroy_rcu(void *view, void *root) "%p (root %p)"
 global_dirty_changed(unsigned int bitmask) "bitmask 0x%"PRIx32
 
+# physmem.c
+address_space_map(void *as, uint64_t addr, uint64_t len, bool is_write, uint32_t attrs) "as:%p addr 0x%"PRIx64":%"PRIx64" write:%d attrs:0x%x"
+find_ram_offset(uint64_t size, uint64_t offset) "size: 0x%" PRIx64 " @ 0x%" PRIx64
+find_ram_offset_loop(uint64_t size, uint64_t candidate, uint64_t offset, uint64_t next, uint64_t mingap) "trying size: 0x%" PRIx64 " @ 0x%" PRIx64 ", offset: 0x%" PRIx64" next: 0x%" PRIx64 " mingap: 0x%" PRIx64
+ram_block_discard_range(const char *rbname, void *hva, size_t length, bool need_madvise, bool need_fallocate, int ret) "%s@%p + 0x%zx: madvise: %d fallocate: %d ret: %d"
+
 # cpus.c
 vm_stop_flush_all(int ret) "ret %d"
 
diff --git a/trace-events b/trace-events
index dd318ed1af..9cb96f64c4 100644
--- a/trace-events
+++ b/trace-events
@@ -37,11 +37,6 @@  dma_complete(void *dbs, int ret, void *cb) "dbs=%p ret=%d cb=%p"
 dma_blk_cb(void *dbs, int ret) "dbs=%p ret=%d"
 dma_map_wait(void *dbs) "dbs=%p"
 
-# exec.c
-find_ram_offset(uint64_t size, uint64_t offset) "size: 0x%" PRIx64 " @ 0x%" PRIx64
-find_ram_offset_loop(uint64_t size, uint64_t candidate, uint64_t offset, uint64_t next, uint64_t mingap) "trying size: 0x%" PRIx64 " @ 0x%" PRIx64 ", offset: 0x%" PRIx64" next: 0x%" PRIx64 " mingap: 0x%" PRIx64
-ram_block_discard_range(const char *rbname, void *hva, size_t length, bool need_madvise, bool need_fallocate, int ret) "%s@%p + 0x%zx: madvise: %d fallocate: %d ret: %d"
-
 # job.c
 job_state_transition(void *job,  int ret, const char *legal, const char *s0, const char *s1) "job %p (ret: %d) attempting %s transition (%s-->%s)"
 job_apply_verb(void *job, const char *state, const char *verb, const char *legal) "job %p in state %s; applying verb %s (%s)"