powertop: new applet
Signed-off-by: Marek Polacek <mmpolacek@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Marek Polacek
Denys Vlasenko
parent
ccb070450e
commit
b507cc3ace
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@ -43,6 +43,17 @@ config FEATURE_ETC_NETWORKS
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a rarely used feature which allows you to use names
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instead of IP/mask pairs in route command.
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config FEATURE_USE_TERMIOS
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bool "Use termios to manipulate the screen"
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default y
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depends on MORE || TOP || POWERTOP
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help
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This option allows utilities such as 'more' and 'top' to determine
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the size of the screen. If you leave this disabled, your utilities
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that display things on the screen will be especially primitive and
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will be unable to determine the current screen size, and will be
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unable to move the cursor.
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config FEATURE_EDITING
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bool "Command line editing"
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default y
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886
procps/powertop.c
Normal file
886
procps/powertop.c
Normal file
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@ -0,0 +1,886 @@
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/* vi: set sw=4 ts=4: */
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/*
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* A mini 'powertop' utility:
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* Analyze power consumption on Intel-based laptops.
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* Based on powertop 1.11.
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*
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* Copyright (C) 2010 Marek Polacek <mmpolacek@gmail.com>
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*
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* Licensed under GPLv2, see file LICENSE in this source tree.
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*/
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//applet:IF_POWERTOP(APPLET(powertop, _BB_DIR_BIN, _BB_SUID_DROP))
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//kbuild:lib-$(CONFIG_POWERTOP) += powertop.o
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//config:config POWERTOP
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//config: bool "powertop"
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//config: default y
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//config: help
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//config: Analyze power consumption on Intel-based laptops
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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 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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/* Max filename length of entry in /sys/devices subsystem */
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#define BIG_SYSNAME_LEN 16
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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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};
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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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int number;
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ullong count;
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char irq_desc[32];
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};
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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 linesize;
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int maxcstate;
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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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int percpu_hpet_start;
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int percpu_hpet_end;
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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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#if ENABLE_FEATURE_USE_TERMIOS
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struct termios init_settings;
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#endif
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};
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#define G (*ptr_to_globals)
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#define INIT_G() do { \
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SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
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} while (0)
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#if ENABLE_FEATURE_USE_TERMIOS
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static void reset_term(void)
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{
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tcsetattr_stdin_TCSANOW(&G.init_settings);
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}
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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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}
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#endif
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static int write_str_to_file(const char *fname, const char *str)
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{
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FILE *fp = fopen_for_write(fname);
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if (!fp)
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return 1;
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fputs(str, fp);
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fclose(fp);
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return 0;
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}
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/* Make it more readable */
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#define start_timer() write_str_to_file("/proc/timer_stats", "1\n")
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#define stop_timer() write_str_to_file("/proc/timer_stats", "0\n")
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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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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 = NULL;
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}
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static void count_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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G.nlines += 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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}
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static void do_sort(void)
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{
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qsort(G.lines, G.headline, sizeof(struct line), 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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{
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DIR *dir;
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struct dirent *d;
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dir = opendir("/proc/acpi/processor");
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if (!dir)
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return;
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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 len;
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len = strlen(d->d_name);
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if (len < 3 || len > BIG_SYSNAME_LEN)
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continue;
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sprintf(buf, "/proc/acpi/processor/%s/power", d->d_name);
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fp = fopen_for_read(buf);
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if (!fp)
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continue;
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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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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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level++;
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/* Also update maxcstate */
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if (level > G.maxcstate)
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G.maxcstate = level;
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}
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fclose(fp);
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}
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closedir(dir);
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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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{
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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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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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return;
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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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}
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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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{
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char *p;
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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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FILE *fp;
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char buf[80];
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G.timer_list_read = 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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while (fgets(buf, sizeof(buf), fp)) {
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p = strstr(buf, "Clock Event Device: hpet");
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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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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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G.percpu_hpet_start = hpet_chan;
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if (hpet_chan > G.percpu_hpet_end)
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G.percpu_hpet_end = hpet_chan;
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}
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fclose(fp);
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}
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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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return 0;
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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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}
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static int update_irq(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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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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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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{
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FILE *fp;
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char buf[128];
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/* Reset values */
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G.interrupt_0 = 0;
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G.total_interrupt = 0;
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fp = xfopen_for_read("/proc/interrupts");
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while (fgets(buf, sizeof(buf), fp)) {
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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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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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/* 0: 143646045 153901007 IO-APIC-edge timer
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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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if (buf[0] != ' ' && !isdigit(buf[0])) {
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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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nr = 20001;
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if (strncmp(buf, "CAL:", 4) == 0)
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nr = 20002;
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if (strncmp(buf, "TLB:", 4) == 0)
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nr = 20003;
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if (strncmp(buf, "TRM:", 4) == 0)
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nr = 20004;
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if (strncmp(buf, "THR:", 4) == 0)
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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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}
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if (nr == -1)
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continue;
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p++;
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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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count = 0;
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while (1) {
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char *tmp;
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p = skip_whitespace(p);
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if (!isdigit(*p))
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break;
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count += bb_strtoull(p, &tmp, 10);
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p = tmp;
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}
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/* 0: 143646045 153901007 IO-APIC-edge timer
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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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/* 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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continue;
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p = skip_whitespace(p);
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}
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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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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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/* 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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G.interrupt_0 = delta;
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else
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G.total_interrupt += delta;
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}
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fclose(fp);
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}
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#endif /* ENABLE_FEATURE_POWERTOP_PROCIRQ */
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#ifdef __i386__
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/*
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* Get information about CPU using CPUID opcode.
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*/
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static void cpuid(unsigned int *eax, unsigned int *ebx, unsigned int *ecx,
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unsigned int *edx)
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{
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/* EAX value specifies what information to return */
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__asm__(
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" pushl %%ebx\n" /* Save EBX */
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" cpuid\n"
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" movl %%ebx, %1\n" /* Save content of EBX */
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" popl %%ebx\n" /* Restore EBX */
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: "=a"(*eax), /* Output */
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"=r"(*ebx),
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"=c"(*ecx),
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"=d"(*edx)
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: "0"(*eax), /* Input */
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"1"(*ebx),
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"2"(*ecx),
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"3"(*edx)
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/* No clobbered registers */
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);
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}
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#endif
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static void NOINLINE print_intel_cstates(void)
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{
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#ifdef __i386__
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int bios_table[8] = { 0 };
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int nbios = 0;
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DIR *cpudir;
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struct dirent *d;
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int i;
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unsigned eax, ebx, ecx, edx;
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cpudir = opendir("/sys/devices/system/cpu");
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if (!cpudir)
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return;
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||||
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/* Loop over cpuN entries */
|
||||
while ((d = readdir(cpudir)) != NULL) {
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DIR *dir;
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int len;
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char fname[sizeof("/sys/devices/system/cpu//cpuidle//desc") + 2*BIG_SYSNAME_LEN];
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len = strlen(d->d_name);
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if (len < 3 || len > BIG_SYSNAME_LEN)
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continue;
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if (!isdigit(d->d_name[3]))
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continue;
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len = sprintf(fname, "/sys/devices/system/cpu/%s/cpuidle", d->d_name);
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dir = opendir(fname);
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||||
if (!dir)
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continue;
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||||
|
||||
/*
|
||||
* Every C-state has its own stateN directory, that
|
||||
* contains a `time' and a `usage' file.
|
||||
*/
|
||||
while ((d = readdir(dir)) != NULL) {
|
||||
FILE *fp;
|
||||
char buf[64];
|
||||
int n;
|
||||
|
||||
n = strlen(d->d_name);
|
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if (n < 3 || n > BIG_SYSNAME_LEN)
|
||||
continue;
|
||||
|
||||
sprintf(fname + len, "/%s/desc", d->d_name);
|
||||
fp = fopen_for_read(fname);
|
||||
if (fp) {
|
||||
char *p = fgets(buf, sizeof(buf), fp);
|
||||
fclose(fp);
|
||||
if (!p)
|
||||
break;
|
||||
p = strstr(p, "MWAIT ");
|
||||
if (p) {
|
||||
int pos;
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||||
p += sizeof("MWAIT ") - 1;
|
||||
pos = (bb_strtoull(p, NULL, 16) >> 4) + 1;
|
||||
if (pos >= ARRAY_SIZE(bios_table))
|
||||
continue;
|
||||
bios_table[pos]++;
|
||||
nbios++;
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||||
}
|
||||
}
|
||||
}
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||||
closedir(dir);
|
||||
}
|
||||
closedir(cpudir);
|
||||
|
||||
if (!nbios)
|
||||
return;
|
||||
|
||||
eax = 5;
|
||||
ebx = ecx = edx = 0;
|
||||
cpuid(&eax, &ebx, &ecx, &edx);
|
||||
if (!edx || !(ecx & 1))
|
||||
return;
|
||||
|
||||
printf("Your CPU supports the following C-states: ");
|
||||
i = 0;
|
||||
while (edx) {
|
||||
if (edx & 7)
|
||||
printf("C%u ", i);
|
||||
edx >>= 4;
|
||||
i++;
|
||||
}
|
||||
bb_putchar('\n');
|
||||
|
||||
/* Print BIOS C-States */
|
||||
printf("Your BIOS reports the following C-states: ");
|
||||
for (i = 0; i < 8; i++)
|
||||
if (bios_table[i])
|
||||
printf("C%u ", i);
|
||||
|
||||
bb_putchar('\n');
|
||||
#endif
|
||||
}
|
||||
|
||||
static void print_header(void)
|
||||
{
|
||||
printf(
|
||||
/* Clear the screen */
|
||||
"\033[H\033[J"
|
||||
/* Print the header */
|
||||
"\033[7m%.*s\033[0m", 79, "PowerTOP (C) 2007 Intel Corporation\n"
|
||||
);
|
||||
}
|
||||
|
||||
static void show_cstates(char cstate_lines[][64])
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 10; i++)
|
||||
if ((cstate_lines[i][0]))
|
||||
printf("%s", cstate_lines[i]);
|
||||
}
|
||||
|
||||
static void show_timerstats(int nostats)
|
||||
{
|
||||
unsigned lines;
|
||||
|
||||
/* Get terminal height */
|
||||
get_terminal_width_height(STDOUT_FILENO, NULL, &lines);
|
||||
|
||||
/* We don't have whole terminal just for timerstats */
|
||||
lines -= 12;
|
||||
|
||||
if (!nostats) {
|
||||
int i, n = 0;
|
||||
|
||||
puts("\nTop causes for wakeups:");
|
||||
for (i = 0; i < G.headline; i++) {
|
||||
if ((G.lines[i].count > 0 || G.lines[i].disk_count > 0)
|
||||
&& n++ < lines
|
||||
) {
|
||||
char c = ' ';
|
||||
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 * 1.0 / DEFAULT_SLEEP, c,
|
||||
G.lines[i].string);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
bb_putchar('\n');
|
||||
bb_error_msg("no stats available; run as root or"
|
||||
" enable the cpufreq_stats module");
|
||||
}
|
||||
}
|
||||
|
||||
//usage:#define powertop_trivial_usage
|
||||
//usage: ""
|
||||
//usage:#define powertop_full_usage "\n\n"
|
||||
//usage: "Analyze power consumption on Intel-based laptops\n"
|
||||
|
||||
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];
|
||||
char cstate_lines[12][64];
|
||||
char buf[128];
|
||||
#if ENABLE_FEATURE_USE_TERMIOS
|
||||
struct termios new_settings;
|
||||
struct pollfd pfd[1];
|
||||
|
||||
pfd[0].fd = 0;
|
||||
pfd[0].events = POLLIN;
|
||||
#endif
|
||||
|
||||
INIT_G();
|
||||
|
||||
#if ENABLE_FEATURE_POWERTOP_PROCIRQ
|
||||
G.percpu_hpet_start = INT_MAX;
|
||||
G.percpu_hpet_end = INT_MIN;
|
||||
#endif
|
||||
|
||||
/* Print warning when we don't have superuser privileges */
|
||||
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();
|
||||
|
||||
printf("Collecting data for "DEFAULT_SLEEP_STR" seconds\n");
|
||||
|
||||
#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);
|
||||
|
||||
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
|
||||
|
||||
/* Read initial usage and duration */
|
||||
read_data(&G.start_usage[0], &G.start_duration[0]);
|
||||
|
||||
/* Copy them to "last" */
|
||||
memcpy(G.last_usage, G.start_usage, sizeof(G.last_usage));
|
||||
memcpy(G.last_duration, G.start_duration, sizeof(G.last_duration));
|
||||
|
||||
/* Display C-states */
|
||||
print_intel_cstates();
|
||||
|
||||
if (stop_timer())
|
||||
G.nostats = 1;
|
||||
|
||||
/* The main loop */
|
||||
for (;;) {
|
||||
double maxsleep = 0.0;
|
||||
ullong totalticks, totalevents;
|
||||
int i;
|
||||
FILE *fp;
|
||||
double newticks;
|
||||
|
||||
if (start_timer())
|
||||
G.nostats = 1;
|
||||
|
||||
#if !ENABLE_FEATURE_USE_TERMIOS
|
||||
sleep(DEFAULT_SLEEP);
|
||||
#else
|
||||
if (safe_poll(pfd, 1, DEFAULT_SLEEP * 1000) > 0) {
|
||||
unsigned char c;
|
||||
if (safe_read(STDIN_FILENO, &c, 1) != 1)
|
||||
break; /* EOF/error */
|
||||
if (c == G.init_settings.c_cc[VINTR])
|
||||
break; /* ^C */
|
||||
if ((c | 0x20) == 'q')
|
||||
break;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (stop_timer())
|
||||
G.nostats = 1;
|
||||
|
||||
clear_lines();
|
||||
#if ENABLE_FEATURE_POWERTOP_PROCIRQ
|
||||
do_proc_irq();
|
||||
#endif
|
||||
|
||||
/* 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;
|
||||
|
||||
/* Count totalticks and totalevents */
|
||||
for (i = 0; i < 8; i++) {
|
||||
if (cur_usage[i]) {
|
||||
totalticks += cur_duration[i] - G.last_duration[i];
|
||||
totalevents += cur_usage[i] - G.last_usage[i];
|
||||
}
|
||||
}
|
||||
|
||||
/* Show title bar */
|
||||
print_header();
|
||||
|
||||
/* Clear C-state lines */
|
||||
memset(&cstate_lines, 0, sizeof(cstate_lines));
|
||||
|
||||
if (totalevents == 0 && G.maxcstate <= 1) {
|
||||
/* This should not happen */
|
||||
sprintf(cstate_lines[5], "< Detailed C-state information is not "
|
||||
"available.>\n");
|
||||
} else {
|
||||
double slept;
|
||||
double percentage;
|
||||
|
||||
newticks = G.total_cpus * DEFAULT_SLEEP * FREQ_ACPI_1000 - totalticks;
|
||||
|
||||
/* Handle rounding errors: do not display negative values */
|
||||
if (newticks < 0)
|
||||
newticks = 0;
|
||||
|
||||
sprintf(cstate_lines[0], "Cn\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);
|
||||
|
||||
/* Compute values for individual C-states */
|
||||
for (i = 0; i < 8; i++) {
|
||||
if (cur_usage[i]) {
|
||||
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
|
||||
/ (G.total_cpus * DEFAULT_SLEEP * FREQ_ACPI_1000);
|
||||
|
||||
if (!G.cstate_names[i][0])
|
||||
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;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Display C-states */
|
||||
show_cstates(cstate_lines);
|
||||
|
||||
/* Do timer_stats info */
|
||||
buf[0] = '\0';
|
||||
totalticks = 0;
|
||||
|
||||
fp = NULL;
|
||||
if (!G.nostats)
|
||||
fp = fopen_for_read("/proc/timer_stats");
|
||||
if (fp) {
|
||||
while (fgets(buf, sizeof(buf), fp)) {
|
||||
const char *count, *process, *func;
|
||||
char line[512];
|
||||
int cnt = 0;
|
||||
bool defferable = false;
|
||||
char *p;
|
||||
int j = 0;
|
||||
|
||||
/* 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)
|
||||
|
||||
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 */
|
||||
ADVANCE(p);
|
||||
process = p;
|
||||
|
||||
/* Get function */
|
||||
ADVANCE(p);
|
||||
func = p;
|
||||
|
||||
if (strcmp(process, "swapper") == 0
|
||||
&& strcmp(func, "hrtimer_start_range_ns (tick_sched_timer)\n") == 0
|
||||
) {
|
||||
process = "[kernel scheduler]";
|
||||
func = "Load balancing tick";
|
||||
}
|
||||
|
||||
if (strcmp(process, "insmod") == 0)
|
||||
process = "[kernel module]";
|
||||
if (strcmp(process, "modprobe") == 0)
|
||||
process = "[kernel module]";
|
||||
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)
|
||||
continue;
|
||||
if (strcmp(process, "powertop") == 0)
|
||||
continue;
|
||||
|
||||
if (p)
|
||||
*p = '\0';
|
||||
|
||||
cnt = bb_strtoull(count, &p, 10);
|
||||
while (*p != 0) {
|
||||
if (*p++ == 'D')
|
||||
defferable = true;
|
||||
}
|
||||
if (defferable)
|
||||
continue;
|
||||
|
||||
if (strchr(process, '['))
|
||||
sprintf(line, "%s %s", process, func);
|
||||
else
|
||||
sprintf(line, "%s", process);
|
||||
push_line(line, cnt);
|
||||
}
|
||||
fclose(fp);
|
||||
}
|
||||
|
||||
#if ENABLE_FEATURE_POWERTOP_PROCIRQ
|
||||
if (strstr(buf, "total events")) {
|
||||
int n = bb_strtoull(buf, NULL, 10) / G.total_cpus;
|
||||
|
||||
if (totalevents == 0) {
|
||||
/* No C-state info available, use timerstats */
|
||||
totalevents = n * G.total_cpus + G.total_interrupt;
|
||||
if (n < 0)
|
||||
totalevents += G.interrupt_0 - n;
|
||||
}
|
||||
if (n > 0 && n < G.interrupt_0)
|
||||
push_line("[extra timer interrupt]", G.interrupt_0 - n);
|
||||
}
|
||||
#endif
|
||||
if (totalevents)
|
||||
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);
|
||||
|
||||
fflush(stdout);
|
||||
|
||||
/* Clear the stats */
|
||||
memset(cur_duration, 0, sizeof(cur_duration));
|
||||
memset(cur_usage, 0, sizeof(cur_usage));
|
||||
|
||||
/* Get new values */
|
||||
read_data(&cur_usage[0], &cur_duration[0]);
|
||||
|
||||
/* Save them */
|
||||
memcpy(G.last_usage, cur_usage, sizeof(G.last_usage));
|
||||
memcpy(G.last_duration, cur_duration, sizeof(G.last_duration));
|
||||
} /* for (;;) */
|
||||
|
||||
bb_putchar('\n');
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
|
|
@ -486,17 +486,6 @@ config MORE
|
|||
you will probably find this utility very helpful. If you don't have
|
||||
any need to reading text files, you can leave this disabled.
|
||||
|
||||
config FEATURE_USE_TERMIOS
|
||||
bool "Use termios to manipulate the screen"
|
||||
default y
|
||||
depends on MORE || TOP
|
||||
help
|
||||
This option allows utilities such as 'more' and 'top' to determine
|
||||
the size of the screen. If you leave this disabled, your utilities
|
||||
that display things on the screen will be especially primitive and
|
||||
will be unable to determine the current screen size, and will be
|
||||
unable to move the cursor.
|
||||
|
||||
config MOUNT
|
||||
bool "mount"
|
||||
default y
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user