diff options
Diffstat (limited to 'tools/testing/selftests/resctrl/cache.c')
| -rw-r--r-- | tools/testing/selftests/resctrl/cache.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c index 0485863a169f..338f71445393 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -89,21 +89,19 @@ static int reset_enable_llc_perf(pid_t pid, int cpu_no) static int get_llc_perf(unsigned long *llc_perf_miss) { __u64 total_misses; + int ret; /* Stop counters after one span to get miss rate */ ioctl(fd_lm, PERF_EVENT_IOC_DISABLE, 0); - if (read(fd_lm, &rf_cqm, sizeof(struct read_format)) == -1) { + ret = read(fd_lm, &rf_cqm, sizeof(struct read_format)); + if (ret == -1) { perror("Could not get llc misses through perf"); - return -1; } total_misses = rf_cqm.values[0].value; - - close(fd_lm); - *llc_perf_miss = total_misses; return 0; @@ -258,19 +256,25 @@ int cat_val(struct resctrl_val_param *param) memflush, operation, resctrl_val)) { fprintf(stderr, "Error-running fill buffer\n"); ret = -1; - break; + goto pe_close; } sleep(1); ret = measure_cache_vals(param, bm_pid); if (ret) - break; + goto pe_close; + + close(fd_lm); } else { break; } } return ret; + +pe_close: + close(fd_lm); + return ret; } /* |