powertop: code shrink
function old new delta process_irq_count_deltas - 729 +729 read_cstate_counts - 358 +358 save_line - 150 +150 clear_lines 80 72 -8 line_compare 18 7 -11 .rodata 145736 145699 -37 powertop_main 2527 2341 -186 push_line 193 - -193 read_data 348 - -348 do_proc_irq 890 - -890 ------------------------------------------------------------------------------ (add/remove: 3/3 grow/shrink: 0/4 up/down: 1237/-1673) Total: -436 bytes Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
This commit is contained in:
Denys Vlasenko
parent
a2d27a1919
commit
373789e567
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@ -19,20 +19,27 @@
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//config: help
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//config: Analyze power consumption on Intel-based laptops
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// XXX This should de configurable
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#define ENABLE_FEATURE_POWERTOP_PROCIRQ 1
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#include "libbb.h"
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//#define debug(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
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#define debug(fmt, ...) ((void)0)
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// XXX This should not be here
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#define ENABLE_FEATURE_POWERTOP_PROCIRQ 1
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#define BLOATY_HPET_IRQ_NUM_DETECTION 0
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#define MAX_CSTATE_COUNT 8
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#define IRQCOUNT 40
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#define DEFAULT_SLEEP 10
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#define DEFAULT_SLEEP_STR "10"
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/* Frequency of the ACPI timer */
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#define FREQ_ACPI 3579.545
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#define FREQ_ACPI_1000 3579545
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#define FREQ_ACPI_1000 3579545
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/* Max filename length of entry in /sys/devices subsystem */
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#define BIG_SYSNAME_LEN 16
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@ -42,14 +49,12 @@ typedef unsigned long long ullong;
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struct line {
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char *string;
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int count;
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int disk_count;
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/*int disk_count;*/
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};
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#if ENABLE_FEATURE_POWERTOP_PROCIRQ
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#define IRQCOUNT 40
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struct irqdata {
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int active;
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smallint active;
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int number;
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ullong count;
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char irq_desc[32];
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@ -57,26 +62,28 @@ struct irqdata {
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#endif
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struct globals {
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bool timer_list_read;
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smallint nostats;
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int headline;
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int nlines;
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int lines_cnt;
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int lines_cumulative_count;
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int linesize;
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int maxcstate;
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unsigned total_cpus;
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struct line *lines;
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smallint cant_enable_timer_stats;
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#if ENABLE_FEATURE_POWERTOP_PROCIRQ
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int total_interrupt;
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int interrupt_0;
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# if BLOATY_HPET_IRQ_NUM_DETECTION
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smallint scanned_timer_list;
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int percpu_hpet_start;
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int percpu_hpet_end;
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# endif
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int interrupt_0;
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int total_interrupt;
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struct irqdata interrupts[IRQCOUNT];
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#endif
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unsigned total_cpus;
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ullong start_usage[8];
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ullong last_usage[8];
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ullong start_duration[8];
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ullong last_duration[8];
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char cstate_names[8][16];
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struct line *lines;
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ullong start_usage[MAX_CSTATE_COUNT];
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ullong last_usage[MAX_CSTATE_COUNT];
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ullong start_duration[MAX_CSTATE_COUNT];
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ullong last_duration[MAX_CSTATE_COUNT];
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char cstate_names[MAX_CSTATE_COUNT][16];
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#if ENABLE_FEATURE_USE_TERMIOS
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struct termios init_settings;
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#endif
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@ -95,7 +102,7 @@ static void reset_term(void)
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static void sig_handler(int signo UNUSED_PARAM)
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{
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reset_term();
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exit(EXIT_FAILURE);
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_exit(EXIT_FAILURE);
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}
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#endif
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@ -116,40 +123,35 @@ static int write_str_to_file(const char *fname, const char *str)
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static void NOINLINE clear_lines(void)
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{
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int i;
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for (i = 0; i < G.headline; i++)
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for (i = 0; i < G.lines_cnt; i++)
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free(G.lines[i].string);
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free(G.lines);
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G.headline = G.linesize = 0;
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G.lines_cnt = 0;
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G.linesize = 0;
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G.lines = NULL;
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}
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static void count_lines(void)
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static void update_lines_cumulative_count(void)
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{
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int i;
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for (i = 0; i < G.headline; i++)
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G.nlines += G.lines[i].count;
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for (i = 0; i < G.lines_cnt; i++)
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G.lines_cumulative_count += G.lines[i].count;
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}
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static int line_compare(const void *p1, const void *p2)
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{
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const struct line *a = p1;
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const struct line *b = p2;
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return (b->count + 50 * b->disk_count) - (a->count + 50 * a->disk_count);
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return (b->count /*+ 50 * b->disk_count*/) - (a->count /*+ 50 * a->disk_count*/);
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}
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static void do_sort(void)
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static void sort_lines(void)
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{
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qsort(G.lines, G.headline, sizeof(struct line), line_compare);
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qsort(G.lines, G.lines_cnt, sizeof(G.lines[0]), line_compare);
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}
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/*
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* Save C-state names, usage and duration. Also get maxcstate.
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* Reads data from /proc.
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*/
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static void read_data(ullong *usage, ullong *duration)
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/* Save C-state usage and duration. Also update maxcstate. */
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static void read_cstate_counts(ullong *usage, ullong *duration)
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{
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DIR *dir;
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struct dirent *d;
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@ -161,10 +163,10 @@ static void read_data(ullong *usage, ullong *duration)
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while ((d = readdir(dir)) != NULL) {
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FILE *fp;
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char buf[192];
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int level = 0;
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int level;
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int len;
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len = strlen(d->d_name);
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len = strlen(d->d_name); /* "CPUnn" */
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if (len < 3 || len > BIG_SYSNAME_LEN)
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continue;
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@ -173,28 +175,31 @@ static void read_data(ullong *usage, ullong *duration)
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if (!fp)
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continue;
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// Example file contents:
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// active state: C0
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// max_cstate: C8
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// maximum allowed latency: 2000000000 usec
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// states:
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// C1: type[C1] promotion[--] demotion[--] latency[001] usage[00006173] duration[00000000000000000000]
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// C2: type[C2] promotion[--] demotion[--] latency[001] usage[00085191] duration[00000000000083024907]
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// C3: type[C3] promotion[--] demotion[--] latency[017] usage[01017622] duration[00000000017921327182]
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level = 0;
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while (fgets(buf, sizeof(buf), fp)) {
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char *p;
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/* Get usage */
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p = strstr(buf, "age[");
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char *p = strstr(buf, "age[");
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if (!p)
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continue;
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p += 4;
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usage[level] += bb_strtoull(p, NULL, 10) + 1;
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/* Get duration */
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p = strstr(buf, "ation[");
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if (!p)
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continue;
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p += 6;
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duration[level] += bb_strtoull(p, NULL, 10);
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/* Increment level */
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if (level >= MAX_CSTATE_COUNT-1)
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break;
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level++;
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/* Also update maxcstate */
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if (level > G.maxcstate)
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if (level > G.maxcstate) /* update maxcstate */
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G.maxcstate = level;
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}
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fclose(fp);
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@ -203,15 +208,10 @@ static void read_data(ullong *usage, ullong *duration)
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}
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/* Add line and/or update count */
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static void push_line(const char *string, int count)
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static void save_line(const char *string, int count)
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{
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int i;
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if (!string)
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return;
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/* Loop through entries */
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for (i = 0; i < G.headline; i++) {
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for (i = 0; i < G.lines_cnt; i++) {
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if (strcmp(string, G.lines[i].string) == 0) {
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/* It's already there, only update count */
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G.lines[i].count += count;
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@ -219,28 +219,27 @@ static void push_line(const char *string, int count)
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}
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}
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G.lines = xrealloc_vector(G.lines, 1, G.headline);
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G.lines[G.headline].string = xstrdup(string);
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G.lines[G.headline].count = count;
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G.lines[G.headline].disk_count = 0;
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/* We added a line */
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G.headline++;
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/* Add new line */
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G.lines = xrealloc_vector(G.lines, 1, G.lines_cnt);
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G.lines[G.lines_cnt].string = xstrdup(string);
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G.lines[G.lines_cnt].count = count;
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/*G.lines[G.lines_cnt].disk_count = 0;*/
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G.lines_cnt++;
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}
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#if ENABLE_FEATURE_POWERTOP_PROCIRQ
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static int percpu_hpet_timer(const char *name)
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static int is_hpet_irq(const char *name)
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{
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char *p;
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# if BLOATY_HPET_IRQ_NUM_DETECTION
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long hpet_chan;
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/* This is done once */
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if (!G.timer_list_read) {
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/* Learn the range of existing hpet timers. This is done once */
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if (!G.scanned_timer_list) {
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FILE *fp;
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char buf[80];
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G.timer_list_read = true;
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G.scanned_timer_list = true;
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fp = fopen_for_read("/proc/timer_list");
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if (!fp)
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return 0;
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@ -250,7 +249,7 @@ static int percpu_hpet_timer(const char *name)
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if (!p)
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continue;
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p += sizeof("Clock Event Device: hpet")-1;
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if (!isdigit(p[0]))
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if (!isdigit(*p))
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continue;
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hpet_chan = xatoi_positive(p);
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if (hpet_chan < G.percpu_hpet_start)
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@ -260,49 +259,46 @@ static int percpu_hpet_timer(const char *name)
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}
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fclose(fp);
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}
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# endif
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//TODO: optimize
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p = strstr(name, "hpet");
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if (!p)
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return 0;
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p += 4;
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if (!isdigit(p[0]))
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if (!isdigit(*p))
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return 0;
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# if BLOATY_HPET_IRQ_NUM_DETECTION
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hpet_chan = xatoi_positive(p);
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if (G.percpu_hpet_start <= hpet_chan && hpet_chan <= G.percpu_hpet_end)
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return 1;
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return 0;
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if (hpet_chan < G.percpu_hpet_start || hpet_chan > G.percpu_hpet_end)
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return 0;
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# endif
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return 1;
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}
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static int update_irq(int irq, ullong count)
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/* Save new IRQ count, return delta from old one */
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static int save_irq_count(int irq, ullong count)
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{
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int unused = IRQCOUNT;
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int i;
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for (i = 0; i < IRQCOUNT; i++) {
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if (G.interrupts[i].active && G.interrupts[i].number == irq) {
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ullong old;
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old = G.interrupts[i].count;
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ullong old = G.interrupts[i].count;
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G.interrupts[i].count = count;
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return count - old;
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}
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if (!G.interrupts[i].active && unused > i)
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unused = i;
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}
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G.interrupts[unused].active = 1;
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G.interrupts[unused].count = count;
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G.interrupts[unused].number = irq;
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if (unused < IRQCOUNT) {
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G.interrupts[unused].active = 1;
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G.interrupts[unused].count = count;
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G.interrupts[unused].number = irq;
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}
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return count;
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}
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/*
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* Read /proc/interrupts, save IRQ counts and IRQ description.
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*/
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static void do_proc_irq(void)
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/* Read /proc/interrupts, save IRQ counts and IRQ description */
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static void process_irq_count_deltas(void)
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{
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FILE *fp;
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char buf[128];
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@ -316,12 +312,10 @@ static void do_proc_irq(void)
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char irq_desc[sizeof(" <kernel IPI> : ") + sizeof(buf)];
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char *p;
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const char *name;
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int nr = -1;
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int nr;
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ullong count;
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ullong delta;
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int special;
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/* Skip header */
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p = strchr(buf, ':');
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if (!p)
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continue;
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@ -329,8 +323,9 @@ static void do_proc_irq(void)
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* ^
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*/
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/* Deal with non-maskable interrupts -- make up fake numbers */
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special = 0;
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nr = -1;
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if (buf[0] != ' ' && !isdigit(buf[0])) {
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//TODO: optimize
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if (strncmp(buf, "NMI:", 4) == 0)
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nr = 20000;
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if (strncmp(buf, "RES:", 4) == 0)
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@ -345,10 +340,9 @@ static void do_proc_irq(void)
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nr = 20005;
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if (strncmp(buf, "SPU:", 4) == 0)
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nr = 20006;
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special = 1;
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} else {
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/* bb_strtou don't eat leading spaces, using strtoul */
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nr = strtoul(buf, NULL, 10); /* xato*() wouldn't work */
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/* bb_strtou doesn't eat leading spaces, using strtoul */
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nr = strtoul(buf, NULL, 10);
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}
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if (nr == -1)
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continue;
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@ -357,7 +351,7 @@ static void do_proc_irq(void)
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/* 0: 143646045 153901007 IO-APIC-edge timer
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* ^
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*/
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/* Count sum of the IRQs */
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/* Sum counts for this IRQ */
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count = 0;
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while (1) {
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char *tmp;
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@ -371,7 +365,7 @@ static void do_proc_irq(void)
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* NMI: 1 2 Non-maskable interrupts
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* ^
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*/
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if (!special) {
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if (nr < 20000) {
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/* Skip to the interrupt name, e.g. 'timer' */
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p = strchr(p, ' ');
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if (!p)
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@ -382,19 +376,21 @@ static void do_proc_irq(void)
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name = p;
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strchrnul(name, '\n')[0] = '\0';
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/* Save description of the interrupt */
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if (special)
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if (nr < 20000)
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sprintf(irq_desc, " <kernel IPI> : %s", name);
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else
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sprintf(irq_desc, " <interrupt> : %s", name);
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delta = update_irq(nr, count);
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delta = save_irq_count(nr, count);
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/* Skip per CPU timer interrupts */
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if (percpu_hpet_timer(name))
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delta = 0;
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if (nr > 0 && delta > 0)
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push_line(irq_desc, delta);
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if (!nr)
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if (is_hpet_irq(name))
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continue;
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if (nr != 0 && delta != 0)
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save_line(irq_desc, delta);
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if (nr == 0)
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G.interrupt_0 = delta;
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else
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G.total_interrupt += delta;
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@ -402,7 +398,9 @@ static void do_proc_irq(void)
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fclose(fp);
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}
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#endif /* ENABLE_FEATURE_POWERTOP_PROCIRQ */
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#else /* !ENABLE_FEATURE_POWERTOP_PROCIRQ */
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# define process_irq_count_deltas() ((void)0)
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#endif
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#ifdef __i386__
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/*
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@ -546,7 +544,7 @@ static void show_cstates(char cstate_lines[][64])
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printf("%s", cstate_lines[i]);
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}
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static void show_timerstats(int nostats)
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static void show_timerstats(void)
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{
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unsigned lines;
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@ -556,19 +554,19 @@ static void show_timerstats(int nostats)
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/* We don't have whole terminal just for timerstats */
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lines -= 12;
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if (!nostats) {
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if (!G.cant_enable_timer_stats) {
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int i, n = 0;
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puts("\nTop causes for wakeups:");
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for (i = 0; i < G.headline; i++) {
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if ((G.lines[i].count > 0 || G.lines[i].disk_count > 0)
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for (i = 0; i < G.lines_cnt; i++) {
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if ((G.lines[i].count > 0 /*|| G.lines[i].disk_count > 0*/)
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&& n++ < lines
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) {
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char c = ' ';
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if (G.lines[i].disk_count)
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c = 'D';
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/*if (G.lines[i].disk_count)
|
||||
c = 'D';*/
|
||||
printf(" %5.1f%% (%5.1f)%c %s\n",
|
||||
G.lines[i].count * 100.0 / G.nlines,
|
||||
G.lines[i].count * 100.0 / G.lines_cumulative_count,
|
||||
G.lines[i].count * 1.0 / DEFAULT_SLEEP, c,
|
||||
G.lines[i].string);
|
||||
}
|
||||
|
|
@ -580,6 +578,24 @@ static void show_timerstats(int nostats)
|
|||
}
|
||||
}
|
||||
|
||||
// Example display from powertop version 1.11
|
||||
// Cn Avg residency P-states (frequencies)
|
||||
// C0 (cpu running) ( 0.5%) 2.00 Ghz 0.0%
|
||||
// polling 0.0ms ( 0.0%) 1.67 Ghz 0.0%
|
||||
// C1 mwait 0.0ms ( 0.0%) 1333 Mhz 0.1%
|
||||
// C2 mwait 0.1ms ( 0.1%) 1000 Mhz 99.9%
|
||||
// C3 mwait 12.1ms (99.4%)
|
||||
//
|
||||
// Wakeups-from-idle per second : 93.6 interval: 15.0s
|
||||
// no ACPI power usage estimate available
|
||||
//
|
||||
// Top causes for wakeups:
|
||||
// 32.4% ( 26.7) <interrupt> : extra timer interrupt
|
||||
// 29.0% ( 23.9) <kernel core> : hrtimer_start_range_ns (tick_sched_timer)
|
||||
// 9.0% ( 7.5) <kernel core> : hrtimer_start (tick_sched_timer)
|
||||
// 6.5% ( 5.3) <interrupt> : ata_piix
|
||||
// 5.0% ( 4.1) inetd : hrtimer_start_range_ns (hrtimer_wakeup)
|
||||
|
||||
//usage:#define powertop_trivial_usage
|
||||
//usage: ""
|
||||
//usage:#define powertop_full_usage "\n\n"
|
||||
|
|
@ -588,8 +604,8 @@ static void show_timerstats(int nostats)
|
|||
int powertop_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
||||
int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
||||
{
|
||||
ullong cur_usage[8];
|
||||
ullong cur_duration[8];
|
||||
ullong cur_usage[MAX_CSTATE_COUNT];
|
||||
ullong cur_duration[MAX_CSTATE_COUNT];
|
||||
char cstate_lines[12][64];
|
||||
char buf[128];
|
||||
#if ENABLE_FEATURE_USE_TERMIOS
|
||||
|
|
@ -602,7 +618,7 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
|
||||
INIT_G();
|
||||
|
||||
#if ENABLE_FEATURE_POWERTOP_PROCIRQ
|
||||
#if ENABLE_FEATURE_POWERTOP_PROCIRQ && BLOATY_HPET_IRQ_NUM_DETECTION
|
||||
G.percpu_hpet_start = INT_MAX;
|
||||
G.percpu_hpet_end = INT_MIN;
|
||||
#endif
|
||||
|
|
@ -611,11 +627,6 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
if (geteuid() != 0)
|
||||
bb_error_msg("run as root to collect enough information");
|
||||
|
||||
#if ENABLE_FEATURE_USE_TERMIOS
|
||||
/* So we don't forget to reset term settings */
|
||||
atexit(reset_term);
|
||||
#endif
|
||||
|
||||
/* Get number of CPUs */
|
||||
G.total_cpus = get_cpu_count();
|
||||
|
||||
|
|
@ -624,22 +635,19 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
#if ENABLE_FEATURE_USE_TERMIOS
|
||||
tcgetattr(0, (void *)&G.init_settings);
|
||||
memcpy(&new_settings, &G.init_settings, sizeof(new_settings));
|
||||
|
||||
/* Turn on unbuffered input, turn off echoing */
|
||||
new_settings.c_lflag &= ~(ISIG | ICANON | ECHO | ECHONL);
|
||||
|
||||
/* So we don't forget to reset term settings */
|
||||
atexit(reset_term);
|
||||
bb_signals(BB_FATAL_SIGS, sig_handler);
|
||||
tcsetattr_stdin_TCSANOW(&new_settings);
|
||||
#endif
|
||||
|
||||
#if ENABLE_FEATURE_POWERTOP_PROCIRQ
|
||||
/* Collect initial data */
|
||||
do_proc_irq();
|
||||
do_proc_irq();
|
||||
#endif
|
||||
process_irq_count_deltas();
|
||||
|
||||
/* Read initial usage and duration */
|
||||
read_data(&G.start_usage[0], &G.start_duration[0]);
|
||||
read_cstate_counts(G.start_usage, G.start_duration);
|
||||
|
||||
/* Copy them to "last" */
|
||||
memcpy(G.last_usage, G.start_usage, sizeof(G.last_usage));
|
||||
|
|
@ -648,20 +656,16 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
/* Display C-states */
|
||||
print_intel_cstates();
|
||||
|
||||
if (stop_timer())
|
||||
G.nostats = 1;
|
||||
G.cant_enable_timer_stats |= stop_timer(); /* 1 on error */
|
||||
|
||||
/* The main loop */
|
||||
for (;;) {
|
||||
double maxsleep = 0.0;
|
||||
/*double maxsleep = 0.0;*/
|
||||
ullong totalticks, totalevents;
|
||||
int i;
|
||||
FILE *fp;
|
||||
double newticks;
|
||||
|
||||
if (start_timer())
|
||||
G.nostats = 1;
|
||||
|
||||
G.cant_enable_timer_stats |= start_timer(); /* 1 on error */
|
||||
#if !ENABLE_FEATURE_USE_TERMIOS
|
||||
sleep(DEFAULT_SLEEP);
|
||||
#else
|
||||
|
|
@ -675,27 +679,22 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
break;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (stop_timer())
|
||||
G.nostats = 1;
|
||||
G.cant_enable_timer_stats |= stop_timer(); /* 1 on error */
|
||||
|
||||
clear_lines();
|
||||
#if ENABLE_FEATURE_POWERTOP_PROCIRQ
|
||||
do_proc_irq();
|
||||
#endif
|
||||
process_irq_count_deltas();
|
||||
|
||||
/* Clear the stats */
|
||||
memset(cur_duration, 0, sizeof(cur_duration));
|
||||
memset(cur_usage, 0, sizeof(cur_usage));
|
||||
|
||||
/* Read them */
|
||||
read_data(&cur_usage[0], &cur_duration[0]);
|
||||
|
||||
totalticks = totalevents = 0;
|
||||
read_cstate_counts(cur_usage, cur_duration);
|
||||
|
||||
/* Count totalticks and totalevents */
|
||||
for (i = 0; i < 8; i++) {
|
||||
if (cur_usage[i]) {
|
||||
totalticks = totalevents = 0;
|
||||
for (i = 0; i < MAX_CSTATE_COUNT; i++) {
|
||||
if (cur_usage[i] != 0) {
|
||||
totalticks += cur_duration[i] - G.last_duration[i];
|
||||
totalevents += cur_usage[i] - G.last_usage[i];
|
||||
}
|
||||
|
|
@ -714,6 +713,7 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
} else {
|
||||
double slept;
|
||||
double percentage;
|
||||
double newticks;
|
||||
|
||||
newticks = G.total_cpus * DEFAULT_SLEEP * FREQ_ACPI_1000 - totalticks;
|
||||
|
||||
|
|
@ -727,8 +727,8 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
percentage);
|
||||
|
||||
/* Compute values for individual C-states */
|
||||
for (i = 0; i < 8; i++) {
|
||||
if (cur_usage[i]) {
|
||||
for (i = 0; i < MAX_CSTATE_COUNT; i++) {
|
||||
if (cur_usage[i] != 0) {
|
||||
slept = (cur_duration[i] - G.last_duration[i])
|
||||
/ (cur_usage[i] - G.last_usage[i] + 0.1) / FREQ_ACPI;
|
||||
percentage = (cur_duration[i] - G.last_duration[i]) * 100
|
||||
|
|
@ -738,8 +738,8 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
sprintf(G.cstate_names[i], "C%u", i + 1);
|
||||
sprintf(cstate_lines[i + 2], "%s\t%5.1fms (%4.1f%%)\n",
|
||||
G.cstate_names[i], slept, percentage);
|
||||
if (maxsleep < slept)
|
||||
maxsleep = slept;
|
||||
/*if (maxsleep < slept)
|
||||
maxsleep = slept;*/
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -752,16 +752,34 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
totalticks = 0;
|
||||
|
||||
fp = NULL;
|
||||
if (!G.nostats)
|
||||
if (!G.cant_enable_timer_stats)
|
||||
fp = fopen_for_read("/proc/timer_stats");
|
||||
if (fp) {
|
||||
// Examlpe file contents:
|
||||
// Timer Stats Version: v0.2
|
||||
// Sample period: 1.329 s
|
||||
// 76, 0 swapper hrtimer_start_range_ns (tick_sched_timer)
|
||||
// 88, 0 swapper hrtimer_start_range_ns (tick_sched_timer)
|
||||
// 24, 3787 firefox hrtimer_start_range_ns (hrtimer_wakeup)
|
||||
// 46D, 1136 kondemand/1 do_dbs_timer (delayed_work_timer_fn)
|
||||
// ...
|
||||
// 1, 1656 Xorg hrtimer_start_range_ns (hrtimer_wakeup)
|
||||
// 1, 2159 udisks-daemon hrtimer_start_range_ns (hrtimer_wakeup)
|
||||
// 331 total events, 249.059 events/sec
|
||||
while (fgets(buf, sizeof(buf), fp)) {
|
||||
const char *count, *process, *func;
|
||||
char *p;
|
||||
char line[512];
|
||||
int cnt = 0;
|
||||
bool defferable = false;
|
||||
char *p;
|
||||
int j = 0;
|
||||
// TODO: optimize
|
||||
if (strstr(buf, "total events"))
|
||||
break;
|
||||
count = skip_whitespace(buf);
|
||||
p = strchr(count, ',');
|
||||
if (!p)
|
||||
continue;
|
||||
*p++ = '\0';
|
||||
p = skip_whitespace(p); /* points to pid */
|
||||
|
||||
/* Find char ' ', then eat remaining spaces */
|
||||
#define ADVANCE(p) do { \
|
||||
|
|
@ -772,26 +790,7 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
(p)++; \
|
||||
(p) = skip_whitespace(p); \
|
||||
} while (0)
|
||||
|
||||
if (strstr(buf, "total events"))
|
||||
break;
|
||||
|
||||
while (isspace(buf[j]))
|
||||
j++;
|
||||
|
||||
count = &buf[j];
|
||||
p = (char *)count;
|
||||
|
||||
/* Skip PID */
|
||||
p = strchr(p, ',');
|
||||
if (!p)
|
||||
continue;
|
||||
*p = '\0';
|
||||
p++;
|
||||
|
||||
p = skip_whitespace(p);
|
||||
|
||||
/* Get process */
|
||||
/* Get process name */
|
||||
ADVANCE(p);
|
||||
process = p;
|
||||
|
||||
|
|
@ -813,8 +812,6 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
if (strcmp(process, "swapper") == 0)
|
||||
process = "[kernel core]";
|
||||
|
||||
p = strchr(p, '\n');
|
||||
|
||||
if (strncmp(func, "tick_nohz_", 10) == 0)
|
||||
continue;
|
||||
if (strncmp(func, "tick_setup_sched_timer", 20) == 0)
|
||||
|
|
@ -822,22 +819,20 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
if (strcmp(process, "powertop") == 0)
|
||||
continue;
|
||||
|
||||
if (p)
|
||||
*p = '\0';
|
||||
strchrnul(p, '\n')[0] = '\0';
|
||||
|
||||
cnt = bb_strtoull(count, &p, 10);
|
||||
while (*p != 0) {
|
||||
while (*p != '\0') {
|
||||
if (*p++ == 'D')
|
||||
defferable = true;
|
||||
goto skip;
|
||||
}
|
||||
if (defferable)
|
||||
continue;
|
||||
|
||||
if (strchr(process, '['))
|
||||
sprintf(line, "%s %s", process, func);
|
||||
else
|
||||
sprintf(line, "%s", process);
|
||||
push_line(line, cnt);
|
||||
save_line(line, cnt);
|
||||
skip: ;
|
||||
}
|
||||
fclose(fp);
|
||||
}
|
||||
|
|
@ -853,19 +848,17 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
totalevents += G.interrupt_0 - n;
|
||||
}
|
||||
if (n > 0 && n < G.interrupt_0)
|
||||
push_line("[extra timer interrupt]", G.interrupt_0 - n);
|
||||
save_line("[extra timer interrupt]", G.interrupt_0 - n);
|
||||
}
|
||||
#endif
|
||||
if (totalevents)
|
||||
if (totalevents != 0)
|
||||
printf("\n\033[1mWakeups-from-idle per second : %4.1f\tinterval:"
|
||||
"%ds\n\033[0m",
|
||||
(double)totalevents / DEFAULT_SLEEP / G.total_cpus, DEFAULT_SLEEP);
|
||||
|
||||
count_lines();
|
||||
do_sort();
|
||||
|
||||
show_timerstats(G.nostats);
|
||||
|
||||
update_lines_cumulative_count();
|
||||
sort_lines();
|
||||
show_timerstats();
|
||||
fflush(stdout);
|
||||
|
||||
/* Clear the stats */
|
||||
|
|
@ -873,7 +866,7 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
|
|||
memset(cur_usage, 0, sizeof(cur_usage));
|
||||
|
||||
/* Get new values */
|
||||
read_data(&cur_usage[0], &cur_duration[0]);
|
||||
read_cstate_counts(cur_usage, cur_duration);
|
||||
|
||||
/* Save them */
|
||||
memcpy(G.last_usage, cur_usage, sizeof(G.last_usage));
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user