diff options
author | Dominik Brodowski <linux@dominikbrodowski.net> | 2011-04-19 21:42:33 +0400 |
---|---|---|
committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2011-07-29 20:35:38 +0400 |
commit | 6c2b8185517fea46bdb1e4e70c7005901fcc89ab (patch) | |
tree | cd8169b59d94adb1bc33244c44f538cf150b777e /tools/power/cpupower/lib | |
parent | 02af3cb5aac13d8ef7edb7876260564b7d42ad2b (diff) | |
download | linux-6c2b8185517fea46bdb1e4e70c7005901fcc89ab.tar.xz |
cpupowerutils: lib - ConfigStyle bugfixes
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'tools/power/cpupower/lib')
-rw-r--r-- | tools/power/cpupower/lib/cpufreq.c | 72 | ||||
-rw-r--r-- | tools/power/cpupower/lib/cpufreq.h | 54 | ||||
-rw-r--r-- | tools/power/cpupower/lib/sysfs.c | 221 | ||||
-rw-r--r-- | tools/power/cpupower/lib/sysfs.h | 34 |
4 files changed, 209 insertions, 172 deletions
diff --git a/tools/power/cpupower/lib/cpufreq.c b/tools/power/cpupower/lib/cpufreq.c index ae7d8c57b447..d961101d1cea 100644 --- a/tools/power/cpupower/lib/cpufreq.c +++ b/tools/power/cpupower/lib/cpufreq.c @@ -42,21 +42,25 @@ int cpufreq_get_hardware_limits(unsigned int cpu, return sysfs_get_freq_hardware_limits(cpu, min, max); } -char * cpufreq_get_driver(unsigned int cpu) { +char *cpufreq_get_driver(unsigned int cpu) +{ return sysfs_get_freq_driver(cpu); } -void cpufreq_put_driver(char * ptr) { +void cpufreq_put_driver(char *ptr) +{ if (!ptr) return; free(ptr); } -struct cpufreq_policy * cpufreq_get_policy(unsigned int cpu) { +struct cpufreq_policy *cpufreq_get_policy(unsigned int cpu) +{ return sysfs_get_freq_policy(cpu); } -void cpufreq_put_policy(struct cpufreq_policy *policy) { +void cpufreq_put_policy(struct cpufreq_policy *policy) +{ if ((!policy) || (!policy->governor)) return; @@ -65,11 +69,14 @@ void cpufreq_put_policy(struct cpufreq_policy *policy) { free(policy); } -struct cpufreq_available_governors * cpufreq_get_available_governors(unsigned int cpu) { +struct cpufreq_available_governors *cpufreq_get_available_governors(unsigned + int cpu) +{ return sysfs_get_freq_available_governors(cpu); } -void cpufreq_put_available_governors(struct cpufreq_available_governors *any) { +void cpufreq_put_available_governors(struct cpufreq_available_governors *any) +{ struct cpufreq_available_governors *tmp, *next; if (!any) @@ -86,11 +93,14 @@ void cpufreq_put_available_governors(struct cpufreq_available_governors *any) { } -struct cpufreq_available_frequencies * cpufreq_get_available_frequencies(unsigned int cpu) { +struct cpufreq_available_frequencies +*cpufreq_get_available_frequencies(unsigned int cpu) +{ return sysfs_get_available_frequencies(cpu); } -void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies *any) { +void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies + *any) { struct cpufreq_available_frequencies *tmp, *next; if (!any) @@ -105,11 +115,13 @@ void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies *any } -struct cpufreq_affected_cpus * cpufreq_get_affected_cpus(unsigned int cpu) { +struct cpufreq_affected_cpus *cpufreq_get_affected_cpus(unsigned int cpu) +{ return sysfs_get_freq_affected_cpus(cpu); } -void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *any) { +void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *any) +{ struct cpufreq_affected_cpus *tmp, *next; if (!any) @@ -124,16 +136,19 @@ void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *any) { } -struct cpufreq_affected_cpus * cpufreq_get_related_cpus(unsigned int cpu) { +struct cpufreq_affected_cpus *cpufreq_get_related_cpus(unsigned int cpu) +{ return sysfs_get_freq_related_cpus(cpu); } -void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *any) { +void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *any) +{ cpufreq_put_affected_cpus(any); } -int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy) { +int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy) +{ if (!policy || !(policy->governor)) return -EINVAL; @@ -141,35 +156,39 @@ int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy) { } -int cpufreq_modify_policy_min(unsigned int cpu, unsigned long min_freq) { +int cpufreq_modify_policy_min(unsigned int cpu, unsigned long min_freq) +{ return sysfs_modify_freq_policy_min(cpu, min_freq); } -int cpufreq_modify_policy_max(unsigned int cpu, unsigned long max_freq) { +int cpufreq_modify_policy_max(unsigned int cpu, unsigned long max_freq) +{ return sysfs_modify_freq_policy_max(cpu, max_freq); } -int cpufreq_modify_policy_governor(unsigned int cpu, char *governor) { +int cpufreq_modify_policy_governor(unsigned int cpu, char *governor) +{ if ((!governor) || (strlen(governor) > 19)) return -EINVAL; return sysfs_modify_freq_policy_governor(cpu, governor); } -int cpufreq_set_frequency(unsigned int cpu, unsigned long target_frequency) { +int cpufreq_set_frequency(unsigned int cpu, unsigned long target_frequency) +{ return sysfs_set_frequency(cpu, target_frequency); } -struct cpufreq_stats * cpufreq_get_stats(unsigned int cpu, unsigned long long *total_time) { - struct cpufreq_stats *ret; - - ret = sysfs_get_freq_stats(cpu, total_time); - return (ret); +struct cpufreq_stats *cpufreq_get_stats(unsigned int cpu, + unsigned long long *total_time) +{ + return sysfs_get_freq_stats(cpu, total_time); } -void cpufreq_put_stats(struct cpufreq_stats *any) { +void cpufreq_put_stats(struct cpufreq_stats *any) +{ struct cpufreq_stats *tmp, *next; if (!any) @@ -183,8 +202,7 @@ void cpufreq_put_stats(struct cpufreq_stats *any) { } } -unsigned long cpufreq_get_transitions(unsigned int cpu) { - unsigned long ret = sysfs_get_freq_transitions(cpu); - - return (ret); +unsigned long cpufreq_get_transitions(unsigned int cpu) +{ + return sysfs_get_freq_transitions(cpu); } diff --git a/tools/power/cpupower/lib/cpufreq.h b/tools/power/cpupower/lib/cpufreq.h index 03be906581b5..3aae8e7a0839 100644 --- a/tools/power/cpupower/lib/cpufreq.h +++ b/tools/power/cpupower/lib/cpufreq.h @@ -93,9 +93,9 @@ extern unsigned long cpufreq_get_transition_latency(unsigned int cpu); * considerations by cpufreq policy notifiers in the kernel. */ -extern int cpufreq_get_hardware_limits(unsigned int cpu, - unsigned long *min, - unsigned long *max); +extern int cpufreq_get_hardware_limits(unsigned int cpu, + unsigned long *min, + unsigned long *max); /* determine CPUfreq driver used @@ -104,9 +104,9 @@ extern int cpufreq_get_hardware_limits(unsigned int cpu, * to avoid memory leakage, please. */ -extern char * cpufreq_get_driver(unsigned int cpu); +extern char *cpufreq_get_driver(unsigned int cpu); -extern void cpufreq_put_driver(char * ptr); +extern void cpufreq_put_driver(char *ptr); /* determine CPUfreq policy currently used @@ -116,7 +116,7 @@ extern void cpufreq_put_driver(char * ptr); */ -extern struct cpufreq_policy * cpufreq_get_policy(unsigned int cpu); +extern struct cpufreq_policy *cpufreq_get_policy(unsigned int cpu); extern void cpufreq_put_policy(struct cpufreq_policy *policy); @@ -129,41 +129,47 @@ extern void cpufreq_put_policy(struct cpufreq_policy *policy); */ -extern struct cpufreq_available_governors * cpufreq_get_available_governors(unsigned int cpu); +extern struct cpufreq_available_governors +*cpufreq_get_available_governors(unsigned int cpu); -extern void cpufreq_put_available_governors(struct cpufreq_available_governors *first); +extern void cpufreq_put_available_governors( + struct cpufreq_available_governors *first); /* determine CPU frequency states available * - * only present on _some_ ->target() cpufreq drivers. For information purposes - * only. Please free allocated memory by calling cpufreq_put_available_frequencies - * after use. + * Only present on _some_ ->target() cpufreq drivers. For information purposes + * only. Please free allocated memory by calling + * cpufreq_put_available_frequencies after use. */ -extern struct cpufreq_available_frequencies * cpufreq_get_available_frequencies(unsigned int cpu); +extern struct cpufreq_available_frequencies +*cpufreq_get_available_frequencies(unsigned int cpu); -extern void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies *first); +extern void cpufreq_put_available_frequencies( + struct cpufreq_available_frequencies *first); -/* determine affected CPUs +/* determine affected CPUs * * Remember to call cpufreq_put_affected_cpus when no longer needed * to avoid memory leakage, please. */ -extern struct cpufreq_affected_cpus * cpufreq_get_affected_cpus(unsigned int cpu); +extern struct cpufreq_affected_cpus *cpufreq_get_affected_cpus(unsigned + int cpu); extern void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *first); -/* determine related CPUs +/* determine related CPUs * * Remember to call cpufreq_put_related_cpus when no longer needed * to avoid memory leakage, please. */ -extern struct cpufreq_affected_cpus * cpufreq_get_related_cpus(unsigned int cpu); +extern struct cpufreq_affected_cpus *cpufreq_get_related_cpus(unsigned + int cpu); extern void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *first); @@ -173,15 +179,16 @@ extern void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *first); * This is not available in all kernel versions or configurations. */ -extern struct cpufreq_stats * cpufreq_get_stats(unsigned int cpu, unsigned long long *total_time); +extern struct cpufreq_stats *cpufreq_get_stats(unsigned int cpu, + unsigned long long *total_time); extern void cpufreq_put_stats(struct cpufreq_stats *stats); extern unsigned long cpufreq_get_transitions(unsigned int cpu); -/* set new cpufreq policy - * +/* set new cpufreq policy + * * Tries to set the passed policy as new policy as close as possible, * but results may differ depending e.g. on governors being available. */ @@ -189,7 +196,7 @@ extern unsigned long cpufreq_get_transitions(unsigned int cpu); extern int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy); -/* modify a policy by only changing min/max freq or governor +/* modify a policy by only changing min/max freq or governor * * Does not check whether result is what was intended. */ @@ -202,11 +209,12 @@ extern int cpufreq_modify_policy_governor(unsigned int cpu, char *governor); /* set a specific frequency * * Does only work if userspace governor can be used and no external - * interference (other calls to this function or to set/modify_policy) + * interference (other calls to this function or to set/modify_policy) * occurs. Also does not work on ->range() cpufreq drivers. */ -extern int cpufreq_set_frequency(unsigned int cpu, unsigned long target_frequency); +extern int cpufreq_set_frequency(unsigned int cpu, + unsigned long target_frequency); #ifdef __cplusplus } diff --git a/tools/power/cpupower/lib/sysfs.c b/tools/power/cpupower/lib/sysfs.c index c9b061fe87b1..9a35456ba6b2 100644 --- a/tools/power/cpupower/lib/sysfs.c +++ b/tools/power/cpupower/lib/sysfs.c @@ -24,14 +24,14 @@ static unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen) { int fd; - size_t numread; + ssize_t numread; - if ( ( fd = open(path, O_RDONLY) ) == -1 ) + fd = open(path, O_RDONLY); + if (fd == -1) return 0; numread = read(fd, buf, buflen - 1); - if ( numread < 1 ) - { + if (numread < 1) { close(fd); return 0; } @@ -39,7 +39,7 @@ static unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen) buf[numread] = '\0'; close(fd); - return numread; + return (unsigned int) numread; } @@ -65,24 +65,24 @@ static unsigned int sysfs_cpufreq_write_file(unsigned int cpu, { char path[SYSFS_PATH_MAX]; int fd; - size_t numwrite; + ssize_t numwrite; snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/cpufreq/%s", cpu, fname); - if ( ( fd = open(path, O_WRONLY) ) == -1 ) + fd = open(path, O_WRONLY); + if (fd == -1) return 0; numwrite = write(fd, value, len); - if ( numwrite < 1 ) - { + if (numwrite < 1) { close(fd); return 0; } close(fd); - return numwrite; + return (unsigned int) numwrite; } /* read access to files which contain one numeric value */ @@ -114,21 +114,23 @@ static const char *cpufreq_value_files[MAX_CPUFREQ_VALUE_READ_FILES] = { static unsigned long sysfs_cpufreq_get_one_value(unsigned int cpu, enum cpufreq_value which) { - unsigned long value; + unsigned long value; unsigned int len; char linebuf[MAX_LINE_LEN]; char *endp; - if ( which >= MAX_CPUFREQ_VALUE_READ_FILES ) + if (which >= MAX_CPUFREQ_VALUE_READ_FILES) return 0; - if ( ( len = sysfs_cpufreq_read_file(cpu, cpufreq_value_files[which], - linebuf, sizeof(linebuf))) == 0 ) + len = sysfs_cpufreq_read_file(cpu, cpufreq_value_files[which], + linebuf, sizeof(linebuf)); + + if (len == 0) return 0; value = strtoul(linebuf, &endp, 0); - if ( endp == linebuf || errno == ERANGE ) + if (endp == linebuf || errno == ERANGE) return 0; return value; @@ -148,7 +150,7 @@ static const char *cpufreq_string_files[MAX_CPUFREQ_STRING_FILES] = { }; -static char * sysfs_cpufreq_get_one_string(unsigned int cpu, +static char *sysfs_cpufreq_get_one_string(unsigned int cpu, enum cpufreq_string which) { char linebuf[MAX_LINE_LEN]; @@ -158,11 +160,13 @@ static char * sysfs_cpufreq_get_one_string(unsigned int cpu, if (which >= MAX_CPUFREQ_STRING_FILES) return NULL; - if ( ( len = sysfs_cpufreq_read_file(cpu, cpufreq_string_files[which], - linebuf, sizeof(linebuf))) == 0 ) + len = sysfs_cpufreq_read_file(cpu, cpufreq_string_files[which], + linebuf, sizeof(linebuf)); + if (len == 0) return NULL; - if ( ( result = strdup(linebuf) ) == NULL ) + result = strdup(linebuf); + if (result == NULL) return NULL; if (result[strlen(result) - 1] == '\n') @@ -195,8 +199,8 @@ static int sysfs_cpufreq_write_one_value(unsigned int cpu, if (which >= MAX_CPUFREQ_WRITE_FILES) return 0; - if ( sysfs_cpufreq_write_file(cpu, cpufreq_write_files[which], - new_value, len) != len ) + if (sysfs_cpufreq_write_file(cpu, cpufreq_write_files[which], + new_value, len) != len) return -ENODEV; return 0; @@ -235,11 +239,13 @@ int sysfs_get_freq_hardware_limits(unsigned int cpu, return 0; } -char * sysfs_get_freq_driver(unsigned int cpu) { +char *sysfs_get_freq_driver(unsigned int cpu) +{ return sysfs_cpufreq_get_one_string(cpu, SCALING_DRIVER); } -struct cpufreq_policy * sysfs_get_freq_policy(unsigned int cpu) { +struct cpufreq_policy *sysfs_get_freq_policy(unsigned int cpu) +{ struct cpufreq_policy *policy; policy = malloc(sizeof(struct cpufreq_policy)); @@ -270,27 +276,24 @@ sysfs_get_freq_available_governors(unsigned int cpu) { unsigned int pos, i; unsigned int len; - if ( ( len = sysfs_cpufreq_read_file(cpu, "scaling_available_governors", - linebuf, sizeof(linebuf))) == 0 ) - { + len = sysfs_cpufreq_read_file(cpu, "scaling_available_governors", + linebuf, sizeof(linebuf)); + if (len == 0) return NULL; - } pos = 0; - for ( i = 0; i < len; i++ ) - { - if ( linebuf[i] == ' ' || linebuf[i] == '\n' ) - { - if ( i - pos < 2 ) + for (i = 0; i < len; i++) { + if (linebuf[i] == ' ' || linebuf[i] == '\n') { + if (i - pos < 2) continue; - if ( current ) { - current->next = malloc(sizeof *current ); - if ( ! current->next ) + if (current) { + current->next = malloc(sizeof(*current)); + if (!current->next) goto error_out; current = current->next; } else { - first = malloc( sizeof *first ); - if ( ! first ) + first = malloc(sizeof(*first)); + if (!first) goto error_out; current = first; } @@ -298,10 +301,10 @@ sysfs_get_freq_available_governors(unsigned int cpu) { current->next = NULL; current->governor = malloc(i - pos + 1); - if ( ! current->governor ) + if (!current->governor) goto error_out; - memcpy( current->governor, linebuf + pos, i - pos); + memcpy(current->governor, linebuf + pos, i - pos); current->governor[i - pos] = '\0'; pos = i + 1; } @@ -310,11 +313,11 @@ sysfs_get_freq_available_governors(unsigned int cpu) { return first; error_out: - while ( first ) { + while (first) { current = first->next; - if ( first->governor ) - free( first->governor ); - free( first ); + if (first->governor) + free(first->governor); + free(first); first = current; } return NULL; @@ -330,30 +333,26 @@ sysfs_get_available_frequencies(unsigned int cpu) { unsigned int pos, i; unsigned int len; - if ( ( len = sysfs_cpufreq_read_file(cpu, - "scaling_available_frequencies", - linebuf, sizeof(linebuf))) == 0 ) - { + len = sysfs_cpufreq_read_file(cpu, "scaling_available_frequencies", + linebuf, sizeof(linebuf)); + if (len == 0) return NULL; - } pos = 0; - for ( i = 0; i < len; i++ ) - { - if ( linebuf[i] == ' ' || linebuf[i] == '\n' ) - { - if ( i - pos < 2 ) + for (i = 0; i < len; i++) { + if (linebuf[i] == ' ' || linebuf[i] == '\n') { + if (i - pos < 2) continue; - if ( i - pos >= SYSFS_PATH_MAX ) + if (i - pos >= SYSFS_PATH_MAX) goto error_out; - if ( current ) { - current->next = malloc(sizeof *current ); - if ( ! current->next ) + if (current) { + current->next = malloc(sizeof(*current)); + if (!current->next) goto error_out; current = current->next; } else { - first = malloc(sizeof *first ); - if ( ! first ) + first = malloc(sizeof(*first)); + if (!first) goto error_out; current = first; } @@ -362,7 +361,7 @@ sysfs_get_available_frequencies(unsigned int cpu) { memcpy(one_value, linebuf + pos, i - pos); one_value[i - pos] = '\0'; - if ( sscanf(one_value, "%lu", ¤t->frequency) != 1 ) + if (sscanf(one_value, "%lu", ¤t->frequency) != 1) goto error_out; pos = i + 1; @@ -372,7 +371,7 @@ sysfs_get_available_frequencies(unsigned int cpu) { return first; error_out: - while ( first ) { + while (first) { current = first->next; free(first); first = current; @@ -380,8 +379,9 @@ sysfs_get_available_frequencies(unsigned int cpu) { return NULL; } -static struct cpufreq_affected_cpus * sysfs_get_cpu_list(unsigned int cpu, - const char *file) { +static struct cpufreq_affected_cpus *sysfs_get_cpu_list(unsigned int cpu, + const char *file) +{ struct cpufreq_affected_cpus *first = NULL; struct cpufreq_affected_cpus *current = NULL; char one_value[SYSFS_PATH_MAX]; @@ -389,29 +389,25 @@ static struct cpufreq_affected_cpus * sysfs_get_cpu_list(unsigned int cpu, unsigned int pos, i; unsigned int len; - if ( ( len = sysfs_cpufreq_read_file(cpu, file, linebuf, - sizeof(linebuf))) == 0 ) - { + len = sysfs_cpufreq_read_file(cpu, file, linebuf, sizeof(linebuf)); + if (len == 0) return NULL; - } pos = 0; - for ( i = 0; i < len; i++ ) - { - if ( i == len || linebuf[i] == ' ' || linebuf[i] == '\n' ) - { - if ( i - pos < 1 ) + for (i = 0; i < len; i++) { + if (i == len || linebuf[i] == ' ' || linebuf[i] == '\n') { + if (i - pos < 1) continue; - if ( i - pos >= SYSFS_PATH_MAX ) + if (i - pos >= SYSFS_PATH_MAX) goto error_out; - if ( current ) { - current->next = malloc(sizeof *current); - if ( ! current->next ) + if (current) { + current->next = malloc(sizeof(*current)); + if (!current->next) goto error_out; current = current->next; } else { - first = malloc(sizeof *first); - if ( ! first ) + first = malloc(sizeof(*first)); + if (!first) goto error_out; current = first; } @@ -421,7 +417,7 @@ static struct cpufreq_affected_cpus * sysfs_get_cpu_list(unsigned int cpu, memcpy(one_value, linebuf + pos, i - pos); one_value[i - pos] = '\0'; - if ( sscanf(one_value, "%u", ¤t->cpu) != 1 ) + if (sscanf(one_value, "%u", ¤t->cpu) != 1) goto error_out; pos = i + 1; @@ -439,15 +435,18 @@ static struct cpufreq_affected_cpus * sysfs_get_cpu_list(unsigned int cpu, return NULL; } -struct cpufreq_affected_cpus * sysfs_get_freq_affected_cpus(unsigned int cpu) { +struct cpufreq_affected_cpus *sysfs_get_freq_affected_cpus(unsigned int cpu) +{ return sysfs_get_cpu_list(cpu, "affected_cpus"); } -struct cpufreq_affected_cpus * sysfs_get_freq_related_cpus(unsigned int cpu) { +struct cpufreq_affected_cpus *sysfs_get_freq_related_cpus(unsigned int cpu) +{ return sysfs_get_cpu_list(cpu, "related_cpus"); } -struct cpufreq_stats * sysfs_get_freq_stats(unsigned int cpu, unsigned long long *total_time) { +struct cpufreq_stats *sysfs_get_freq_stats(unsigned int cpu, + unsigned long long *total_time) { struct cpufreq_stats *first = NULL; struct cpufreq_stats *current = NULL; char one_value[SYSFS_PATH_MAX]; @@ -455,28 +454,27 @@ struct cpufreq_stats * sysfs_get_freq_stats(unsigned int cpu, unsigned long long unsigned int pos, i; unsigned int len; - if ( ( len = sysfs_cpufreq_read_file(cpu, "stats/time_in_state", - linebuf, sizeof(linebuf))) == 0 ) + len = sysfs_cpufreq_read_file(cpu, "stats/time_in_state", + linebuf, sizeof(linebuf)); + if (len == 0) return NULL; *total_time = 0; pos = 0; - for ( i = 0; i < len; i++ ) - { - if ( i == strlen(linebuf) || linebuf[i] == '\n' ) - { - if ( i - pos < 2 ) + for (i = 0; i < len; i++) { + if (i == strlen(linebuf) || linebuf[i] == '\n') { + if (i - pos < 2) continue; - if ( (i - pos) >= SYSFS_PATH_MAX ) + if ((i - pos) >= SYSFS_PATH_MAX) goto error_out; - if ( current ) { - current->next = malloc(sizeof *current ); - if ( ! current->next ) + if (current) { + current->next = malloc(sizeof(*current)); + if (!current->next) goto error_out; current = current->next; } else { - first = malloc(sizeof *first ); - if ( ! first ) + first = malloc(sizeof(*first)); + if (!first) goto error_out; current = first; } @@ -485,7 +483,9 @@ struct cpufreq_stats * sysfs_get_freq_stats(unsigned int cpu, unsigned long long memcpy(one_value, linebuf + pos, i - pos); one_value[i - pos] = '\0'; - if ( sscanf(one_value, "%lu %llu", ¤t->frequency, ¤t->time_in_state) != 2 ) + if (sscanf(one_value, "%lu %llu", + ¤t->frequency, + ¤t->time_in_state) != 2) goto error_out; *total_time = *total_time + current->time_in_state; @@ -496,7 +496,7 @@ struct cpufreq_stats * sysfs_get_freq_stats(unsigned int cpu, unsigned long long return first; error_out: - while ( first ) { + while (first) { current = first->next; free(first); first = current; @@ -511,29 +511,29 @@ unsigned long sysfs_get_freq_transitions(unsigned int cpu) static int verify_gov(char *new_gov, char *passed_gov) { - unsigned int i, j=0; + unsigned int i, j = 0; if (!passed_gov || (strlen(passed_gov) > 19)) return -EINVAL; strncpy(new_gov, passed_gov, 20); - for (i=0;i<20;i++) { + for (i = 0; i < 20; i++) { if (j) { new_gov[i] = '\0'; continue; } - if ((new_gov[i] >= 'a') && (new_gov[i] <= 'z')) { + if ((new_gov[i] >= 'a') && (new_gov[i] <= 'z')) continue; - } - if ((new_gov[i] >= 'A') && (new_gov[i] <= 'Z')) { + + if ((new_gov[i] >= 'A') && (new_gov[i] <= 'Z')) continue; - } - if (new_gov[i] == '-') { + + if (new_gov[i] == '-') continue; - } - if (new_gov[i] == '_') { + + if (new_gov[i] == '_') continue; - } + if (new_gov[i] == '\0') { j = 1; continue; @@ -627,7 +627,8 @@ int sysfs_set_freq_policy(unsigned int cpu, struct cpufreq_policy *policy) gov, strlen(gov)); } -int sysfs_set_frequency(unsigned int cpu, unsigned long target_frequency) { +int sysfs_set_frequency(unsigned int cpu, unsigned long target_frequency) +{ struct cpufreq_policy *pol = sysfs_get_freq_policy(cpu); char userspace_gov[] = "userspace"; char freq[SYSFS_PATH_MAX]; @@ -640,7 +641,7 @@ int sysfs_set_frequency(unsigned int cpu, unsigned long target_frequency) { ret = sysfs_modify_freq_policy_governor(cpu, userspace_gov); if (ret) { cpufreq_put_policy(pol); - return (ret); + return ret; } } @@ -662,7 +663,7 @@ int sysfs_cpu_exists(unsigned int cpu) snprintf(file, SYSFS_PATH_MAX, PATH_TO_CPU "cpu%u/", cpu); - if ( stat(file, &statbuf) != 0 ) + if (stat(file, &statbuf) != 0) return -ENOSYS; return S_ISDIR(statbuf.st_mode) ? 0 : -ENOSYS; diff --git a/tools/power/cpupower/lib/sysfs.h b/tools/power/cpupower/lib/sysfs.h index c29e5575be8a..c76a5e0af501 100644 --- a/tools/power/cpupower/lib/sysfs.h +++ b/tools/power/cpupower/lib/sysfs.h @@ -5,17 +5,27 @@ extern unsigned int sysfs_cpu_exists(unsigned int cpu); extern unsigned long sysfs_get_freq_kernel(unsigned int cpu); extern unsigned long sysfs_get_freq_hardware(unsigned int cpu); extern unsigned long sysfs_get_freq_transition_latency(unsigned int cpu); -extern int sysfs_get_freq_hardware_limits(unsigned int cpu, unsigned long *min, unsigned long *max); -extern char * sysfs_get_freq_driver(unsigned int cpu); -extern struct cpufreq_policy * sysfs_get_freq_policy(unsigned int cpu); -extern struct cpufreq_available_governors * sysfs_get_freq_available_governors(unsigned int cpu); -extern struct cpufreq_available_frequencies * sysfs_get_available_frequencies(unsigned int cpu); -extern struct cpufreq_affected_cpus * sysfs_get_freq_affected_cpus(unsigned int cpu); -extern struct cpufreq_affected_cpus * sysfs_get_freq_related_cpus(unsigned int cpu); -extern struct cpufreq_stats * sysfs_get_freq_stats(unsigned int cpu, unsigned long long *total_time); +extern int sysfs_get_freq_hardware_limits(unsigned int cpu, + unsigned long *min, unsigned long *max); +extern char *sysfs_get_freq_driver(unsigned int cpu); +extern struct cpufreq_policy *sysfs_get_freq_policy(unsigned int cpu); +extern struct cpufreq_available_governors *sysfs_get_freq_available_governors( + unsigned int cpu); +extern struct cpufreq_available_frequencies *sysfs_get_available_frequencies( + unsigned int cpu); +extern struct cpufreq_affected_cpus *sysfs_get_freq_affected_cpus( + unsigned int cpu); +extern struct cpufreq_affected_cpus *sysfs_get_freq_related_cpus( + unsigned int cpu); +extern struct cpufreq_stats *sysfs_get_freq_stats(unsigned int cpu, + unsigned long long *total_time); extern unsigned long sysfs_get_freq_transitions(unsigned int cpu); -extern int sysfs_set_freq_policy(unsigned int cpu, struct cpufreq_policy *policy); -extern int sysfs_modify_freq_policy_min(unsigned int cpu, unsigned long min_freq); -extern int sysfs_modify_freq_policy_max(unsigned int cpu, unsigned long max_freq); +extern int sysfs_set_freq_policy(unsigned int cpu, + struct cpufreq_policy *policy); +extern int sysfs_modify_freq_policy_min(unsigned int cpu, + unsigned long min_freq); +extern int sysfs_modify_freq_policy_max(unsigned int cpu, + unsigned long max_freq); extern int sysfs_modify_freq_policy_governor(unsigned int cpu, char *governor); -extern int sysfs_set_frequency(unsigned int cpu, unsigned long target_frequency); +extern int sysfs_set_frequency(unsigned int cpu, + unsigned long target_frequency); |