From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Pratik R. Sampat" Date: Tue, 28 Sep 2021 11:51:09 +0000 Subject: [PATCH v8 2/2] selftest/powerpc: Add PAPR sysfs attributes sniff test Message-Id: <20210928115102.57117-3-psampat@linux.ibm.com> List-Id: References: <20210928115102.57117-1-psampat@linux.ibm.com> In-Reply-To: <20210928115102.57117-1-psampat@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, shuah@kernel.org, farosas@linux.ibm.com, kjain@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, kvm-ppc@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, psampat@linux.ibm.com, pratik.r.sampat@gmail.com 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 --- 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..9c8cb54c8b28 --- /dev/null +++ b/tools/testing/selftests/powerpc/papr_attributes/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +attr_test \ No newline at end of file diff --git a/tools/testing/selftests/powerpc/papr_attributes/Makefile b/tools/testing/selftests/powerpc/papr_attributes/Makefile new file mode 100644 index 000000000000..135886f200ad --- /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 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..905e2cbb3863 --- /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 2021, Pratik Rajesh Sampat, IBM Corp. + */ + +#include +#include +#include +#include +#include +#include +#include + +#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() +{ + 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"); +} -- 2.31.1