fix bad comparison of possible frequency scaling governor values
git-svn-id: svn://localhost/ardour2/branches/3.0@8776 d708f5d6-7413-0410-9779-e7cbd77b26cf
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@ -108,27 +108,27 @@ int system_uses_frequencyscaling() {
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char filename[256], buf[256];
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char filename[256], buf[256];
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while (!done) {
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while (!done) {
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(void) snprintf(filename, 256, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor", cpu);
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(void) snprintf(filename, 256, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor", cpu);
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if (0<read_string(filename, buf, 256)) {
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if (0<read_string(filename, buf, 256)) {
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if ((0!=strcmp("performance", buf)) &&
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if ((0!=strncmp("performance", buf, 11)) &&
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(0!=strcmp("powersafe", buf))) {
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(0!=strncmp("powersafe", buf, 9))) {
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// So it's neither the "performance" nor the "powersafe" governor
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// So it's neither the "performance" nor the "powersafe" governor
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(void) snprintf(filename, 256, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_min_freq", cpu);
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(void) snprintf(filename, 256, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_min_freq", cpu);
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if (read_int(filename, &min)) {
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if (read_int(filename, &min)) {
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(void) snprintf(filename, 256, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_max_freq", cpu);
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(void) snprintf(filename, 256, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_max_freq", cpu);
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if (read_int(filename, &max)) {
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if (read_int(filename, &max)) {
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if (min!=max) {
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if (min!=max) {
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// wrong governor AND different frequency limits -> scaling
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// wrong governor AND different frequency limits -> scaling
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return 1;
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return 1;
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}
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}
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}
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}
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}
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}
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}
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}
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} else {
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} else {
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// couldn't open file -> no more cores
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// couldn't open file -> no more cores
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done = 1;
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done = 1;
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}
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}
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cpu++;
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cpu++;
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}
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}
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// couldn't find anything that points to scaling
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// couldn't find anything that points to scaling
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