diff options
Diffstat (limited to 'tools/perf/tests/shell/test_intel_pt.sh')
| -rwxr-xr-x | tools/perf/tests/shell/test_intel_pt.sh | 169 |
1 files changed, 3 insertions, 166 deletions
diff --git a/tools/perf/tests/shell/test_intel_pt.sh b/tools/perf/tests/shell/test_intel_pt.sh index 8ee761f03c38..26243ff760ec 100755 --- a/tools/perf/tests/shell/test_intel_pt.sh +++ b/tools/perf/tests/shell/test_intel_pt.sh @@ -21,9 +21,7 @@ tmpfile="${temp_dir}/tmp-perf.data" perfdatafile="${temp_dir}/test-perf.data" outfile="${temp_dir}/test-out.txt" errfile="${temp_dir}/test-err.txt" -workload="${temp_dir}/workload" awkscript="${temp_dir}/awkscript" -jitdump_workload="${temp_dir}/jitdump_workload" maxbrstack="${temp_dir}/maxbrstack.py" cleanup() @@ -60,37 +58,6 @@ perf_record_no_bpf() perf record --no-bpf-event "$@" } -have_workload=false -cat << _end_of_file_ | /usr/bin/cc -o "${workload}" -xc - -pthread && have_workload=true -#include <time.h> -#include <pthread.h> - -void work(void) { - struct timespec tm = { - .tv_nsec = 1000000, - }; - int i; - - /* Run for about 30 seconds */ - for (i = 0; i < 30000; i++) - nanosleep(&tm, NULL); -} - -void *threadfunc(void *arg) { - work(); - return NULL; -} - -int main(void) { - pthread_t th; - - pthread_create(&th, NULL, threadfunc, NULL); - work(); - pthread_join(th, NULL); - return 0; -} -_end_of_file_ - can_cpu_wide() { echo "Checking for CPU-wide recording on CPU $1" @@ -145,11 +112,6 @@ test_per_thread() echo "--- Test per-thread ${desc}recording ---" - if ! $have_workload ; then - echo "No workload, so skipping" - return 2 - fi - if [ "${k}" = "k" ] ; then can_kernel || return 2 fi @@ -252,9 +214,9 @@ test_per_thread() } _end_of_file_ - $workload & + perf test -w thloop 30 2 & w1=$! - $workload & + perf test -w thloop 30 2 & w2=$! echo "Workload PIDs are $w1 and $w2" wait_for_threads ${w1} 2 @@ -283,139 +245,14 @@ test_jitdump() { echo "--- Test tracing self-modifying code that uses jitdump ---" - script_path=$(realpath "$0") - script_dir=$(dirname "$script_path") - jitdump_incl_dir="${script_dir}/../../util" - jitdump_h="${jitdump_incl_dir}/jitdump.h" - if ! perf check feature -q libelf ; then echo "SKIP: libelf is needed for jitdump" return 2 fi - if [ ! -e "${jitdump_h}" ] ; then - echo "SKIP: Include file jitdump.h not found" - return 2 - fi - - if [ -z "${have_jitdump_workload}" ] ; then - have_jitdump_workload=false - # Create a workload that uses self-modifying code and generates its own jitdump file - cat <<- "_end_of_file_" | /usr/bin/cc -o "${jitdump_workload}" -I "${jitdump_incl_dir}" -xc - -pthread && have_jitdump_workload=true - #define _GNU_SOURCE - #include <sys/mman.h> - #include <sys/types.h> - #include <stddef.h> - #include <stdio.h> - #include <stdint.h> - #include <unistd.h> - #include <string.h> - - #include "jitdump.h" - - #define CHK_BYTE 0x5a - - static inline uint64_t rdtsc(void) - { - unsigned int low, high; - - asm volatile("rdtsc" : "=a" (low), "=d" (high)); - - return low | ((uint64_t)high) << 32; - } - - static FILE *open_jitdump(void) - { - struct jitheader header = { - .magic = JITHEADER_MAGIC, - .version = JITHEADER_VERSION, - .total_size = sizeof(header), - .pid = getpid(), - .timestamp = rdtsc(), - .flags = JITDUMP_FLAGS_ARCH_TIMESTAMP, - }; - char filename[256]; - FILE *f; - void *m; - - snprintf(filename, sizeof(filename), "jit-%d.dump", getpid()); - f = fopen(filename, "w+"); - if (!f) - goto err; - /* Create an MMAP event for the jitdump file. That is how perf tool finds it. */ - m = mmap(0, 4096, PROT_READ | PROT_EXEC, MAP_PRIVATE, fileno(f), 0); - if (m == MAP_FAILED) - goto err_close; - munmap(m, 4096); - if (fwrite(&header,sizeof(header),1,f) != 1) - goto err_close; - return f; - - err_close: - fclose(f); - err: - return NULL; - } - - static int write_jitdump(FILE *f, void *addr, const uint8_t *dat, size_t sz, uint64_t *idx) - { - struct jr_code_load rec = { - .p.id = JIT_CODE_LOAD, - .p.total_size = sizeof(rec) + sz, - .p.timestamp = rdtsc(), - .pid = getpid(), - .tid = gettid(), - .vma = (unsigned long)addr, - .code_addr = (unsigned long)addr, - .code_size = sz, - .code_index = ++*idx, - }; - - if (fwrite(&rec,sizeof(rec),1,f) != 1 || - fwrite(dat, sz, 1, f) != 1) - return -1; - return 0; - } - - static void close_jitdump(FILE *f) - { - fclose(f); - } - - int main() - { - /* Get a memory page to store executable code */ - void *addr = mmap(0, 4096, PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); - /* Code to execute: mov CHK_BYTE, %eax ; ret */ - uint8_t dat[] = {0xb8, CHK_BYTE, 0x00, 0x00, 0x00, 0xc3}; - FILE *f = open_jitdump(); - uint64_t idx = 0; - int ret = 1; - - if (!f) - return 1; - /* Copy executable code to executable memory page */ - memcpy(addr, dat, sizeof(dat)); - /* Record it in the jitdump file */ - if (write_jitdump(f, addr, dat, sizeof(dat), &idx)) - goto out_close; - /* Call it */ - ret = ((int (*)(void))addr)() - CHK_BYTE; - out_close: - close_jitdump(f); - return ret; - } - _end_of_file_ - fi - - if ! $have_jitdump_workload ; then - echo "SKIP: No jitdump workload" - return 2 - fi - # Change to temp_dir so jitdump collateral files go there cd "${temp_dir}" - perf_record_no_bpf -o "${tmpfile}" -e intel_pt//u "${jitdump_workload}" + perf_record_no_bpf -o "${tmpfile}" -e intel_pt//u perf test -w jitdump perf inject -i "${tmpfile}" -o "${perfdatafile}" --jit decode_br_cnt=$(perf script -i "${perfdatafile}" --itrace=b | wc -l) # Note that overflow and lost errors are suppressed for the error count |