4228a996b0
Older machines don't have the firmware feature that enables the code
this test is testing. Skip the test if the sysfs directory doesn't
exist. Also use the FAIL_IF() macro to provide more verbose error
reporting if an error is encountered.
Fixes: 57201d657eb7 ("selftest/powerpc: Add PAPR sysfs attributes sniff test")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220619233103.2666171-1-mpe@ellerman.id.au
114 lines
2.0 KiB
C
114 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* PAPR Energy attributes sniff test
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* This checks if the papr folders and contents are populated relating to
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* the energy and frequency attributes
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*
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* Copyright 2022, Pratik Rajesh Sampat, IBM Corp.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <dirent.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include "utils.h"
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enum energy_freq_attrs {
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POWER_PERFORMANCE_MODE = 1,
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IDLE_POWER_SAVER_STATUS = 2,
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MIN_FREQ = 3,
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STAT_FREQ = 4,
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MAX_FREQ = 6,
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PROC_FOLDING_STATUS = 8
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};
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enum type {
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INVALID,
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STR_VAL,
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NUM_VAL
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};
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static int value_type(int id)
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{
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int val_type;
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switch (id) {
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case POWER_PERFORMANCE_MODE:
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case IDLE_POWER_SAVER_STATUS:
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val_type = STR_VAL;
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break;
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case MIN_FREQ:
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case STAT_FREQ:
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case MAX_FREQ:
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case PROC_FOLDING_STATUS:
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val_type = NUM_VAL;
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break;
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default:
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val_type = INVALID;
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}
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return val_type;
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}
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static int verify_energy_info(void)
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{
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const char *path = "/sys/firmware/papr/energy_scale_info";
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struct dirent *entry;
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struct stat s;
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DIR *dirp;
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errno = 0;
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if (stat(path, &s)) {
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SKIP_IF(errno == ENOENT);
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FAIL_IF(errno);
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}
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FAIL_IF(!S_ISDIR(s.st_mode));
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dirp = opendir(path);
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while ((entry = readdir(dirp)) != NULL) {
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char file_name[64];
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int id, attr_type;
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FILE *f;
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if (strcmp(entry->d_name, ".") == 0 ||
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strcmp(entry->d_name, "..") == 0)
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continue;
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id = atoi(entry->d_name);
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attr_type = value_type(id);
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FAIL_IF(attr_type == INVALID);
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/* Check if the files exist and have data in them */
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sprintf(file_name, "%s/%d/desc", path, id);
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f = fopen(file_name, "r");
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FAIL_IF(!f);
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FAIL_IF(fgetc(f) == EOF);
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sprintf(file_name, "%s/%d/value", path, id);
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f = fopen(file_name, "r");
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FAIL_IF(!f);
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FAIL_IF(fgetc(f) == EOF);
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if (attr_type == STR_VAL) {
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sprintf(file_name, "%s/%d/value_desc", path, id);
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f = fopen(file_name, "r");
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FAIL_IF(!f);
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FAIL_IF(fgetc(f) == EOF);
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}
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}
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return 0;
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}
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int main(void)
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{
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return test_harness(verify_energy_info, "papr_attributes");
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}
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