Include a testcase to check if the sysfs files for energy and frequency related have its related attribute files exist and populated
Signed-off-by: Pratik R. Sampat psampat@linux.ibm.com --- tools/testing/selftests/powerpc/Makefile | 1 + .../powerpc/papr_attributes/.gitignore | 2 + .../powerpc/papr_attributes/Makefile | 7 ++ .../powerpc/papr_attributes/attr_test.c | 107 ++++++++++++++++++ 4 files changed, 117 insertions(+) create mode 100644 tools/testing/selftests/powerpc/papr_attributes/.gitignore create mode 100644 tools/testing/selftests/powerpc/papr_attributes/Makefile create mode 100644 tools/testing/selftests/powerpc/papr_attributes/attr_test.c
diff --git a/tools/testing/selftests/powerpc/Makefile b/tools/testing/selftests/powerpc/Makefile index 0830e63818c1..c68c872efb23 100644 --- a/tools/testing/selftests/powerpc/Makefile +++ b/tools/testing/selftests/powerpc/Makefile @@ -30,6 +30,7 @@ SUB_DIRS = alignment \ eeh \ vphn \ math \ + papr_attributes \ ptrace \ security
diff --git a/tools/testing/selftests/powerpc/papr_attributes/.gitignore b/tools/testing/selftests/powerpc/papr_attributes/.gitignore new file mode 100644 index 000000000000..d5f42b6d9e99 --- /dev/null +++ b/tools/testing/selftests/powerpc/papr_attributes/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +attr_test diff --git a/tools/testing/selftests/powerpc/papr_attributes/Makefile b/tools/testing/selftests/powerpc/papr_attributes/Makefile new file mode 100644 index 000000000000..e899712d49db --- /dev/null +++ b/tools/testing/selftests/powerpc/papr_attributes/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0 +TEST_GEN_PROGS := attr_test + +top_srcdir = ../../../../.. +include ../../lib.mk + +$(TEST_GEN_PROGS): ../harness.c ../utils.c \ No newline at end of file diff --git a/tools/testing/selftests/powerpc/papr_attributes/attr_test.c b/tools/testing/selftests/powerpc/papr_attributes/attr_test.c new file mode 100644 index 000000000000..bab0dc06e90b --- /dev/null +++ b/tools/testing/selftests/powerpc/papr_attributes/attr_test.c @@ -0,0 +1,107 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * PAPR Energy attributes sniff test + * This checks if the papr folders and contents are populated relating to + * the energy and frequency attributes + * + * Copyright 2022, Pratik Rajesh Sampat, IBM Corp. + */ + +#include <stdio.h> +#include <string.h> +#include <dirent.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <stdlib.h> + +#include "utils.h" + +enum energy_freq_attrs { + POWER_PERFORMANCE_MODE = 1, + IDLE_POWER_SAVER_STATUS = 2, + MIN_FREQ = 3, + STAT_FREQ = 4, + MAX_FREQ = 6, + PROC_FOLDING_STATUS = 8 +}; + +enum type { + INVALID, + STR_VAL, + NUM_VAL +}; + +int value_type(int id) +{ + int val_type; + + switch (id) { + case POWER_PERFORMANCE_MODE: + case IDLE_POWER_SAVER_STATUS: + val_type = STR_VAL; + break; + case MIN_FREQ: + case STAT_FREQ: + case MAX_FREQ: + case PROC_FOLDING_STATUS: + val_type = NUM_VAL; + break; + default: + val_type = INVALID; + } + + return val_type; +} + +int verify_energy_info(void) +{ + const char *path = "/sys/firmware/papr/energy_scale_info"; + struct dirent *entry; + struct stat s; + DIR *dirp; + + if (stat(path, &s) || !S_ISDIR(s.st_mode)) + return -1; + dirp = opendir(path); + + while ((entry = readdir(dirp)) != NULL) { + char file_name[64]; + int id, attr_type; + FILE *f; + + if (strcmp(entry->d_name, ".") == 0 || + strcmp(entry->d_name, "..") == 0) + continue; + + id = atoi(entry->d_name); + attr_type = value_type(id); + if (attr_type == INVALID) + return -1; + + /* Check if the files exist and have data in them */ + sprintf(file_name, "%s/%d/desc", path, id); + f = fopen(file_name, "r"); + if (!f || fgetc(f) == EOF) + return -1; + + sprintf(file_name, "%s/%d/value", path, id); + f = fopen(file_name, "r"); + if (!f || fgetc(f) == EOF) + return -1; + + if (attr_type == STR_VAL) { + sprintf(file_name, "%s/%d/value_desc", path, id); + f = fopen(file_name, "r"); + if (!f || fgetc(f) == EOF) + return -1; + } + } + + return 0; +} + +int main(void) +{ + return test_harness(verify_energy_info, "papr_attributes"); +}