perfmon: make less arch dependent

In preparation for enabling perfmon on Arm platforms, move some Intel
/arch specific logic into the /intel directory and update the CMake to
split the common code from arch specific files.

Since the dispatch_wrapper code is very different on Arm/Intel,
each arch can provide their own implementation + conduct any additional
arch specific config e.g. on Intel, all indexes from the mmap pages are
cached. The new method intel_config_dispatch_wrapper conducts this
config and returns a pointer to the dispatch wrapper to use.

Similarly, is_bundle_supported() looks very different on Arm/Intel, so
each implementation is to provide their own arch specific checks.

Two new callbacks/function ptrs are added in PERFMON_REGISTER_SOURCE to
support this - .bundle_support and .config_dispatch_wrapper.

Type: refactor
Signed-off-by: Zachary Leaf <zachary.leaf@arm.com>
Change-Id: Idd121ddcfd1cc80a57c949cecd64eb2db0ac8be3

1 files changed, 10 insertions, 6 deletions

diff --git a/src/plugins/perfmon/CMakeLists.txt b/src/plugins/perfmon/CMakeLists.txt
index c7b2a384cc2..59eddf01145 100644
--- a/src/plugins/perfmon/CMakeLists.txt
+++ b/src/plugins/perfmon/CMakeLists.txt
@@ -15,12 +15,8 @@ if(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
   return()
 endif()
 
-add_vpp_plugin(perfmon
-  SOURCES
-  cli.c
-  dispatch_wrapper.c
-  linux.c
-  perfmon.c
+list(APPEND ARCH_PMU_SOURCES
+  intel/dispatch_wrapper.c
   intel/core.c
   intel/uncore.c
   intel/bundle/backend_bound_core.c
@@ -38,6 +34,14 @@ add_vpp_plugin(perfmon
   intel/bundle/topdown_icelake.c
   intel/bundle/topdown_metrics.c
   intel/bundle/topdown_tremont.c
+)
+
+add_vpp_plugin(perfmon
+  SOURCES
+  cli.c
+  linux.c
+  perfmon.c
+  ${ARCH_PMU_SOURCES}
 
   COMPONENT
   vpp-plugin-devtools