* Licensed under GPLv2, see file LICENSE in this source tree.
*/
-//applet:IF_POWERTOP(APPLET(powertop, _BB_DIR_BIN, _BB_SUID_DROP))
+//applet:IF_POWERTOP(APPLET(powertop, BB_DIR_USR_SBIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_POWERTOP) += powertop.o
/* Frequency of the ACPI timer */
#define FREQ_ACPI 3579.545
-#define FREQ_ACPI_1000 3579545
+#define FREQ_ACPI_1000 3579545
/* Max filename length of entry in /sys/devices subsystem */
#define BIG_SYSNAME_LEN 16
}
/* Make it more readable */
-#define start_timer() write_str_to_file("/proc/timer_stats", "1\n")
-#define stop_timer() write_str_to_file("/proc/timer_stats", "0\n")
+#define start_timer() write_str_to_file("/proc/timer_stats", "1\n")
+#define stop_timer() write_str_to_file("/proc/timer_stats", "0\n")
static NOINLINE void clear_lines(void)
{
if (len < 3 || len > BIG_SYSNAME_LEN)
continue;
- sprintf(buf, "/proc/acpi/processor/%s/power", d->d_name);
+ sprintf(buf, "%s/%s/power", "/proc/acpi/processor", d->d_name);
fp = fopen_for_read(buf);
if (!fp)
continue;
/* 0: 143646045 153901007 IO-APIC-edge timer
* ^
*/
+ *p = '\0';
/* Deal with non-maskable interrupts -- make up fake numbers */
- nr = -1;
- if (buf[0] != ' ' && !isdigit(buf[0])) {
-//TODO: optimize
- if (strncmp(buf, "NMI:", 4) == 0)
- nr = 20000;
- if (strncmp(buf, "RES:", 4) == 0)
- nr = 20001;
- if (strncmp(buf, "CAL:", 4) == 0)
- nr = 20002;
- if (strncmp(buf, "TLB:", 4) == 0)
- nr = 20003;
- if (strncmp(buf, "TRM:", 4) == 0)
- nr = 20004;
- if (strncmp(buf, "THR:", 4) == 0)
- nr = 20005;
- if (strncmp(buf, "SPU:", 4) == 0)
- nr = 20006;
+ nr = index_in_strings("NMI\0RES\0CAL\0TLB\0TRM\0THR\0SPU\0", buf);
+ if (nr >= 0) {
+ nr += 20000;
} else {
/* bb_strtou doesn't eat leading spaces, using strtoul */
+ errno = 0;
nr = strtoul(buf, NULL, 10);
+ if (errno)
+ continue;
}
- if (nr == -1)
- continue;
-
p++;
/* 0: 143646045 153901007 IO-APIC-edge timer
* ^
}
/* 0: 143646045 153901007 IO-APIC-edge timer
* NMI: 1 2 Non-maskable interrupts
- * ^
+ * ^
*/
if (nr < 20000) {
/* Skip to the interrupt name, e.g. 'timer' */
char buf[128];
char line[15 + 3 + 128];
int n;
- ullong totalticks;
FILE *fp;
buf[0] = '\0';
- totalticks = 0;
+ n = 0;
fp = NULL;
if (!G.cant_enable_timer_stats)
fp = fopen_for_read("/proc/timer_stats");
while (fgets(buf, sizeof(buf), fp)) {
const char *count, *process, *func;
char *p;
- int cnt;
+ int idx;
+ unsigned cnt;
count = skip_whitespace(buf);
p = strchr(count, ',');
if (!p)
continue;
*p++ = '\0';
- if (strcmp(strchrnul(count, ' '), " total events") == 0)
+ cnt = bb_strtou(count, NULL, 10);
+ if (strcmp(skip_non_whitespace(count), " total events") == 0) {
+#if ENABLE_FEATURE_POWERTOP_PROCIRQ
+ n = cnt / G.total_cpus;
+ if (n > 0 && n < G.interrupt_0) {
+ sprintf(line, " <interrupt> : %s", "extra timer interrupt");
+ save_line(line, G.interrupt_0 - n);
+ }
+#endif
break;
- p = skip_whitespace(p); /* points to pid */
-
-/* Find char ' ', then eat remaining spaces */
-#define ADVANCE(p) do { \
- (p) = strchr((p), ' '); \
- if (!(p)) \
- continue; \
- *(p) = '\0'; \
- (p)++; \
- (p) = skip_whitespace(p); \
-} while (0)
- /* Get process name */
- ADVANCE(p);
- process = p;
- /* Get function */
- ADVANCE(p);
+ }
+ if (strchr(count, 'D'))
+ continue; /* deferred */
+ p = skip_whitespace(p); /* points to pid now */
+ process = NULL;
+ get_func_name:
+ p = strchr(p, ' ');
+ if (!p)
+ continue;
+ *p++ = '\0';
+ p = skip_whitespace(p);
+ if (process == NULL) {
+ process = p;
+ goto get_func_name;
+ }
func = p;
-#undef ADVANCE
+
//if (strcmp(process, "swapper") == 0
// && strcmp(func, "hrtimer_start_range_ns (tick_sched_timer)\n") == 0
//) {
//if (strcmp(process, "powertop") == 0)
// continue;
- if (strcmp(process, "insmod") == 0)
- process = "[kernel module]";
- if (strcmp(process, "modprobe") == 0)
- process = "[kernel module]";
- if (strcmp(process, "swapper") == 0)
- process = "<kernel core>";
+ idx = index_in_strings("insmod\0modprobe\0swapper\0", process);
+ if (idx != -1) {
+ process = idx < 2 ? "[kernel module]" : "<kernel core>";
+ }
strchrnul(p, '\n')[0] = '\0';
- {
- char *tmp;
- cnt = bb_strtoull(count, &tmp, 10);
- p = tmp;
- }
- while (*p != '\0') {
- if (*p++ == 'D') /* deferred */
- goto skip;
- }
+ // 46D\01136\0kondemand/1\0do_dbs_timer (delayed_work_timer_fn)
+ // ^ ^ ^
+ // count process func
//if (strchr(process, '['))
sprintf(line, "%15.15s : %s", process, func);
//else
// sprintf(line, "%s", process);
save_line(line, cnt);
- skip: ;
}
fclose(fp);
}
- n = 0;
-#if ENABLE_FEATURE_POWERTOP_PROCIRQ
- if (strstr(buf, "total events")) {
- n = bb_strtoull(buf, NULL, 10) / G.total_cpus;
- if (n > 0 && n < G.interrupt_0) {
- sprintf(line, " <interrupt> : %s", "extra timer interrupt");
- save_line(line, G.interrupt_0 - n);
- }
- }
-#endif
return n;
}
}
#endif
+#ifdef __i386__
static NOINLINE void print_intel_cstates(void)
{
-#ifdef __i386__
int bios_table[8] = { 0 };
int nbios = 0;
DIR *cpudir;
if (!isdigit(d->d_name[3]))
continue;
- len = sprintf(fname, "/sys/devices/system/cpu/%s/cpuidle", d->d_name);
+ len = sprintf(fname, "%s/%s/cpuidle", "/sys/devices/system/cpu", d->d_name);
dir = opendir(fname);
if (!dir)
continue;
/* Print BIOS C-States */
printf("Your BIOS reports the following C-states: ");
- for (i = 0; i < 8; i++)
+ for (i = 0; i < ARRAY_SIZE(bios_table); i++)
if (bios_table[i])
printf("C%u ", i);
bb_putchar('\n');
-#endif
}
+#else
+# define print_intel_cstates() ((void)0)
+#endif
static void show_timerstats(void)
{
sprintf(cstate_lines[0], "Cn\t\t Avg residency\n");
percentage = newticks * 100.0 / (G.total_cpus * DEFAULT_SLEEP * FREQ_ACPI_1000);
- sprintf(cstate_lines[1], "C0 (cpu running) (%4.1f%%)\n", percentage);
+ sprintf(cstate_lines[1], "C0 (cpu running) (%4.1f%%)\n", percentage);
/* Compute values for individual C-states */
for (i = 0; i < MAX_CSTATE_COUNT; i++) {
projects / oweals / busybox.git / blobdiff