modules: add tracepoints

One for module load and one for qom type lookup.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jose R. Ziviani <jziviani@suse.de>
Message-Id: <20210624103836.2382472-18-kraxel@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/util/module.c b/util/module.c
index a9ec2da9972e15ac88cab6d99ecdd30c835dda1e..acaaecad56c921b546dac614f860748270efe2fd 100644 (file)
--- a/util/module.c
+++ b/util/module.c
@@ -24,6 +24,7 @@
 #ifdef CONFIG_MODULE_UPGRADES
 #include "qemu-version.h"
 #endif
+#include "trace.h"
 
 typedef struct ModuleEntry
 {
@@ -176,6 +177,7 @@ static int module_load_file(const char *fname, bool mayfail, bool export_symbols
         ret = 0;
     }
 
+    trace_module_load_module(fname);
     QTAILQ_FOREACH_SAFE(e, &dso_init_list, node, next) {
         QTAILQ_REMOVE(&dso_init_list, e, node);
         g_free(e);
@@ -294,6 +296,7 @@ void module_load_qom_one(const char *type)
         return;
     }
 
+    trace_module_lookup_object_type(type);
     for (modinfo = module_info; modinfo->name != NULL; modinfo++) {
         if (!modinfo->objs) {
             continue;

diff --git a/util/trace-events b/util/trace-events
index 806cac14a762e6ae51f3cbb9deec5a73bccf97b6..c8f53d7d9fc3ddd395099467e52e6a8dbb8575a3 100644 (file)
--- a/util/trace-events
+++ b/util/trace-events
@@ -100,3 +100,7 @@ uffd_create_fd_api_failed(int err) "errno: %i"
 uffd_create_fd_api_noioctl(uint64_t ioctl_req, uint64_t ioctl_supp) "ioctl_req: 0x%" PRIx64 "ioctl_supp: 0x%" PRIx64
 uffd_register_memory_failed(void *addr, uint64_t length, uint64_t mode, int err) "addr: %p length: %" PRIu64 " mode: 0x%" PRIx64 " errno: %i"
 uffd_unregister_memory_failed(void *addr, uint64_t length, int err) "addr: %p length: %" PRIu64 " errno: %i"
+
+# module.c
+module_load_module(const char *name) "file %s"
+module_lookup_object_type(const char *name) "name %s"