LibC: Allow opting into malloc() and free() performance event logging

If a program is started with LIBC_PROFILE_MALLOC in the environment,
it will now generate PERF_EVENT_MALLOC and PERF_EVENT_FREE.

1 files changed, 5 insertions, 0 deletions

diff --git a/Libraries/LibC/serenity.cpp b/Libraries/LibC/serenity.cpp
index 73c8aac3a7..d35b008522 100644
--- a/Libraries/LibC/serenity.cpp
+++ b/Libraries/LibC/serenity.cpp
@@ -79,4 +79,9 @@ int purge(int mode)
     __RETURN_WITH_ERRNO(rc, rc, -1);
 }
 
+int perf_event(int type, uintptr_t arg1, uintptr_t arg2)
+{
+    int rc = syscall(SC_perf_event, type, arg1, arg2);
+    __RETURN_WITH_ERRNO(rc, rc, -1);
+}
 }