Sergey,

This patch moves the aforementioned test from the <misc> to the <trace/>
directory, includes it in <index>, and names the subtest. Also, it
slightly refactors the code to make it closer to our code style.

The test is adjusted to be runable in the test suite by adding the
`jit.flush()` to avoid collisions of traces. Also, the number of
iterations for the compiled loop inside the hook is increased to avoid
hotcount collisions.

Part of tarantool/tarantool#9398
---

 test/LuaJIT-tests/misc/hook_record.lua  | 8 --------
 test/LuaJIT-tests/trace/hook_record.lua | 7 +++++++
 test/LuaJIT-tests/trace/index           | 1 +
 3 files changed, 8 insertions(+), 8 deletions(-)
 delete mode 100644 test/LuaJIT-tests/misc/hook_record.lua
 create mode 100644 test/LuaJIT-tests/trace/hook_record.lua

diff --git a/test/LuaJIT-tests/misc/hook_record.lua b/test/LuaJIT-tests/misc/hook_record.lua
deleted file mode 100644
index 6f1646de..00000000
--- a/test/LuaJIT-tests/misc/hook_record.lua
+++ /dev/null
@@ -1,8 +0,0 @@
-
-if not jit or not jit.status or not jit.status() then return end
-
-debug.sethook(function() for i=1,100 do end end, "", 10)
-for i=1,10 do end
-debug.sethook()
-assert((require("jit.util").traceinfo(1)))
-
diff --git a/test/LuaJIT-tests/trace/hook_record.lua b/test/LuaJIT-tests/trace/hook_record.lua
new file mode 100644
index 00000000..684e1139
--- /dev/null
+++ b/test/LuaJIT-tests/trace/hook_record.lua
@@ -0,0 +1,7 @@
+do --- Recording traces inside the hook.
+  jit.flush()
+  debug.sethook(function() for _ = 1, 1000 do end end, "", 10)
+  for _ = 1, 10 do end
+  debug.sethook()
+  assert((require("jit.util").traceinfo(1)))
+end
diff --git a/test/LuaJIT-tests/trace/index b/test/LuaJIT-tests/trace/index
index 595a71d2..63af7870 100644
--- a/test/LuaJIT-tests/trace/index
+++ b/test/LuaJIT-tests/trace/index
@@ -4,6 +4,7 @@ exit_jfuncf.lua
 gc.lua
 gc64_slot_revival.lua
 hook_norecord.lua
+hook_record.lua
 phi
 snap.lua
 stitch.lua