PR10228: use task_finder_vma for -d /user/object files.

* main.cxx (main): For "-d /path" arguments, enable task finder.
* runtime/sym.h (_stp_module): Add *vmcb member.
* task_finder{.cxx,.h} (emit_vma_callback_probe_decl): Zap.
* tapset-itrace.cxx, tapset-utrace.cxx: Use unwindsyms_modules
  instead.
* tapsets.cxx (uprobe::emit_module_decls): Ditto.
* translate.cxx (emit_module_init): Emit task finder registrations
  for vmcb's associated with _stp_modules.
  (dump_unwindsyms): Associate vmcbs with user-space unwindsyms entries.

1 files changed, 0 insertions, 24 deletions

diff --git a/tapsets.cxx b/tapsets.cxx
index 333914d0..a88cda79 100644
--- a/tapsets.cxx
+++ b/tapsets.cxx
@@ -4423,21 +4423,6 @@ uprobe_derived_probe_group::emit_module_decls (systemtap_session& s)
   s.op->newline(-1) << "} stap_uprobes [MAXUPROBES];";
   s.op->newline() << "DEFINE_MUTEX(stap_uprobes_lock);"; // protects against concurrent registration/unregistration
 
-  // Emit vma callbacks.
-  s.op->newline() << "#ifdef STP_NEED_VMA_TRACKER";
-  s.op->newline() << "static struct stap_task_finder_target stap_uprobe_vmcbs[] = {";
-  s.op->indent(1);
-  for (unsigned i = 0; i < probes.size(); i++)
-    {
-      uprobe_derived_probe* p = probes[i];
-      if (p->pid != 0)
-	emit_vma_callback_probe_decl (s, "", p->pid);
-      else
-	emit_vma_callback_probe_decl (s, p->module, (int64_t)0);
-    }
-  s.op->newline(-1) << "};";
-  s.op->newline() << "#endif";
-
   s.op->newline() << "static struct stap_uprobe_spec {";
   s.op->newline(1) << "struct stap_task_finder_target finder;";
   s.op->newline() << "unsigned long address;";
@@ -4692,15 +4677,6 @@ void
 uprobe_derived_probe_group::emit_module_init (systemtap_session& s)
 {
   if (probes.empty()) return;
-  s.op->newline() << "#ifdef STP_NEED_VMA_TRACKER";
-  s.op->newline() << "_stp_sym_init();";
-  s.op->newline() << "/* ---- uprobe vma callbacks ---- */";
-  s.op->newline() << "for (i=0; i<ARRAY_SIZE(stap_uprobe_vmcbs); i++) {";
-  s.op->indent(1);
-  s.op->newline() << "struct stap_task_finder_target *r = &stap_uprobe_vmcbs[i];";
-  s.op->newline() << "rc = stap_register_task_finder_target(r);";
-  s.op->newline(-1) << "}";
-  s.op->newline() << "#endif";
 
   s.op->newline() << "/* ---- user probes ---- */";