fix compilation

Author: vickiegpt

CMakeLists.txt

@@ -4,9 +4,8 @@ project(CXL-MEM-Simulator VERSION 0.1.0)
 find_package(cxxopts REQUIRED)
 find_package(fmt REQUIRED)
 find_package(range-v3 REQUIRED)
-find_package(Clang REQUIRED)
 file(GLOB_RECURSE SOURCE_FILES src/*.cpp)
-message(${CLANG_INCLUDE_DIRS})
+
 execute_process(COMMAND uname -r OUTPUT_VARIABLE arch OUTPUT_STRIP_TRAILING_WHITESPACE)
 set(LINUX_SOURCE /lib/modules/${arch}/build/)
 set(CMAKE_CXX_FLAGS "-Wall -g -pthread -lrt -rdynamic")
@@ -19,8 +18,8 @@ target_link_libraries(CXL-MEM-Simulator cxxopts::cxxopts fmt::fmt range-v3::rang
 
 function(bpf prefix)
     add_custom_target(${prefix}_bpf ALL
-            COMMAND ${CLANG_INCLUDE_DIRS}/../bin/clang -S -nostdinc -I${LINUX_SOURCE}/arch/x86/include -I${LINUX_SOURCE}/arch/x86/include/uapi -I${LINUX_SOURCE}/arch/x86/include/generated -I${LINUX_SOURCE}/arch/x86/include/generated/uapi -I${LINUX_SOURCE}/include -I${LINUX_SOURCE}/include/uapi -I${LINUX_SOURCE}/include/generated/uapi -I${LINUX_SOURCE}/tools/testing/selftests/bpf -include ${LINUX_SOURCE}/include/linux/kconfig.h -Werror -D__KERNEL__ -D__ASM_SYSREG_H -D__BPF_TRACING__ -D__TARGET_ARCH_x86 -Wno-unused-value -Wno-pointer-sign -Wno-compare-distinct-pointer-types -Wno-gnu-variable-sized-type-not-at-end -Wno-tautological-compare -Wno-unknown-warning-option -Wno-address-of-packed-member -O2 -g -emit-llvm -c ${CMAKE_SOURCE_DIR}/src/${prefix}.c -o ${CMAKE_BINARY_DIR}/${prefix}.ll
-            COMMAND ${CLANG_INCLUDE_DIRS}/../bin/llc -march=bpf -filetype=obj -o ${CMAKE_BINARY_DIR}/${prefix}.o ${CMAKE_BINARY_DIR}/${prefix}.ll
+            COMMAND clang --target=bpf -nostdinc -S -I/usr/include/linux -I${CMAKE_SOURCE_DIR}/include -I${LINUX_SOURCE}/arch/x86/include -I/usr/include -I${LINUX_SOURCE}/arch/x86/include/uapi -I${LINUX_SOURCE}/arch/x86/include/generated -I${LINUX_SOURCE}/arch/x86/include/generated/uapi -I${LINUX_SOURCE}/include -I${LINUX_SOURCE}/include/uapi -I${LINUX_SOURCE}/include/generated/uapi -I${LINUX_SOURCE}/tools/testing/selftests/bpf -include ${LINUX_SOURCE}/include/linux/kconfig.h -D__KERNEL__ -D__ASM_SYSREG_H -D__BPF_TRACING__ -D__TARGET_ARCH_x86 -Wno-implicit-function-declaration -O3 -emit-llvm -g -c ${CMAKE_SOURCE_DIR}/src/${prefix}.c -o ${CMAKE_BINARY_DIR}/${prefix}.ll
+            COMMAND llc -march=bpf -filetype=obj -o ${CMAKE_BINARY_DIR}/${prefix}.o ${CMAKE_BINARY_DIR}/${prefix}.ll
             )
     add_dependencies(CXL-MEM-Simulator ${prefix}_bpf)
 endfunction()

README.md

@@ -9,7 +9,7 @@ $ sudo apt install llvm-dev clang libbpf-dev libclang-dev libcxxopts-dev libfmt-
 ```
 ## User input
 ```bash
-./CXL-MEM-Simulator -t ./microbench/many_calloc -i 5 -c 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
+LOGV=1 ./CXL-MEM-Simulator -t ./microbench/many_calloc -i 5 -c 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
 ```
 1. -t Target: The path to the executable
 2. -i Interval: The epoch of the simulator, the parameter is in milisecond
@@ -29,5 +29,17 @@ $ sudo apt install llvm-dev clang libbpf-dev libclang-dev libcxxopts-dev libfmt-
                  \ 
                   3
 ```
+9. env LOGV stands for logs level that you can see.
 ## Limitation
-The pebs requires no larger than 5 `perf_open_event` attached to certain PID, so I limit the bpf program to munmap(kprobe) and sbrk(kprobe/kretprobe), you can configure them. For multiple process application, I need to first SIGSTOP the process and `send/recv` back the PID information. For client and server application, I need to SIGSTOP/SIGCONT on both client and server simultaneously, which is not implemented yet.
+The pebs requires no larger than 5 `perf_open_event` attached to certain PID, so I limit the bpf program to munmap(kprobe) and sbrk(kprobe/kretprobe), you can configure them. For multiple process application, I need to first SIGSTOP the process and `send/recv` back the PID information. For client and server application, I need to SIGSTOP/SIGCONT on both client and server simultaneously, which is not implemented yet.
+
+## Cite
+```bash
+@article{yangyarch23,
+  title={CXLMemSim: A pure software simulated CXL.mem for performance characterization},
+  author={Yiwei Yang, Pooneh Safayenikoo, Jiacheng Ma, Tanvir Ahmed Khan, Andrew Quinn},
+  journal={arXiv preprint arXiv:2303.06153},
+  booktitle={The fifth Young Architect Workshop (YArch'23)},
+  year={2023}
+}
+```