From b507cc3aceda26eff851230223a62c6fb471573c Mon Sep 17 00:00:00 2001
From: Marek Polacek <mmpolacek@gmail.com>
Date: Mon, 25 Oct 2010 03:44:34 +0200
Subject: powertop: new applet
Signed-off-by: Marek Polacek <mmpolacek@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
libbb/Config.src | 11 +
procps/powertop.c | 886 ++++++++++++++++++++++++++++++++++++++++++++++++++
util-linux/Config.src | 11 -
3 files changed, 897 insertions(+), 11 deletions(-)
create mode 100644 procps/powertop.c
diff --git a/libbb/Config.src b/libbb/Config.src
index 74dc9c549..f6c7a11ea 100644
--- a/libbb/Config.src
+++ b/libbb/Config.src
@@ -43,6 +43,17 @@ config FEATURE_ETC_NETWORKS
a rarely used feature which allows you to use names
instead of IP/mask pairs in route command.
+config FEATURE_USE_TERMIOS
+ bool "Use termios to manipulate the screen"
+ default y
+ depends on MORE || TOP || POWERTOP
+ 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 FEATURE_EDITING
bool "Command line editing"
default y
diff --git a/procps/powertop.c b/procps/powertop.c
new file mode 100644
index 000000000..f35aa5c0a
--- /dev/null
+++ b/procps/powertop.c
@@ -0,0 +1,886 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * A mini 'powertop' utility:
+ * Analyze power consumption on Intel-based laptops.
+ * Based on powertop 1.11.
+ *
+ * Copyright (C) 2010 Marek Polacek <mmpolacek@gmail.com>
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
+ */
+
+//applet:IF_POWERTOP(APPLET(powertop, _BB_DIR_BIN, _BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_POWERTOP) += powertop.o
+
+//config:config POWERTOP
+//config: bool "powertop"
+//config: default y
+//config: help
+//config: Analyze power consumption on Intel-based laptops
+
+#include "libbb.h"
+
+//#define debug(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
+#define debug(fmt, ...) ((void)0)
+
+// XXX This should not be here
+#define ENABLE_FEATURE_POWERTOP_PROCIRQ 1
+
+#define DEFAULT_SLEEP 10
+#define DEFAULT_SLEEP_STR "10"
+
+/* Frequency of the ACPI timer */
+#define FREQ_ACPI 3579.545
+#define FREQ_ACPI_1000 3579545
+
+/* Max filename length of entry in /sys/devices subsystem */
+#define BIG_SYSNAME_LEN 16
+
+typedef unsigned long long ullong;
+
+struct line {
+ char *string;
+ int count;
+ int disk_count;
+};
+
+#if ENABLE_FEATURE_POWERTOP_PROCIRQ
+#define IRQCOUNT 40
+
+struct irqdata {
+ int active;
+ int number;
+ ullong count;
+ char irq_desc[32];
+};
+#endif
+
+struct globals {
+ bool timer_list_read;
+ smallint nostats;
+ int headline;
+ int nlines;
+ int linesize;
+ int maxcstate;
+#if ENABLE_FEATURE_POWERTOP_PROCIRQ
+ int total_interrupt;
+ int interrupt_0;
+ int percpu_hpet_start;
+ int percpu_hpet_end;
+ struct irqdata interrupts[IRQCOUNT];
+#endif
+ unsigned total_cpus;
+ ullong start_usage[8];
+ ullong last_usage[8];
+ ullong start_duration[8];
+ ullong last_duration[8];
+ char cstate_names[8][16];
+ struct line *lines;
+#if ENABLE_FEATURE_USE_TERMIOS
+ struct termios init_settings;
+#endif
+};
+#define G (*ptr_to_globals)
+#define INIT_G() do { \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+} while (0)
+
+#if ENABLE_FEATURE_USE_TERMIOS
+static void reset_term(void)
+{
+ tcsetattr_stdin_TCSANOW(&G.init_settings);
+}
+
+static void sig_handler(int signo UNUSED_PARAM)
+{
+ reset_term();
+ exit(EXIT_FAILURE);
+}
+#endif
+
+static int write_str_to_file(const char *fname, const char *str)
+{
+ FILE *fp = fopen_for_write(fname);
+ if (!fp)
+ return 1;
+ fputs(str, fp);
+ fclose(fp);
+ return 0;
+}
+
+/* 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")
+
+static void NOINLINE clear_lines(void)
+{
+ int i;
+
+ for (i = 0; i < G.headline; i++)
+ free(G.lines[i].string);
+ free(G.lines);
+ G.headline = G.linesize = 0;
+ G.lines = NULL;
+}
+
+static void count_lines(void)
+{
+ int i;
+
+ for (i = 0; i < G.headline; i++)
+ G.nlines += G.lines[i].count;
+}
+
+static int line_compare(const void *p1, const void *p2)
+{
+ const struct line *a = p1;
+ const struct line *b = p2;
+
+ return (b->count + 50 * b->disk_count) - (a->count + 50 * a->disk_count);
+}
+
+static void do_sort(void)
+{
+ qsort(G.lines, G.headline, sizeof(struct line), line_compare);
+}
+
+/*
+ * Save C-state names, usage and duration. Also get maxcstate.
+ * Reads data from /proc.
+ */
+static void read_data(ullong *usage, ullong *duration)
+{
+ DIR *dir;
+ struct dirent *d;
+
+ dir = opendir("/proc/acpi/processor");
+ if (!dir)
+ return;
+
+ while ((d = readdir(dir)) != NULL) {
+ FILE *fp;
+ char buf[192];
+ int level = 0;
+ int len;
+
+ len = strlen(d->d_name);
+ if (len < 3 || len > BIG_SYSNAME_LEN)
+ continue;
+
+ sprintf(buf, "/proc/acpi/processor/%s/power", d->d_name);
+ fp = fopen_for_read(buf);
+ if (!fp)
+ continue;
+
+ while (fgets(buf, sizeof(buf), fp)) {
+ char *p;
+
+ /* Get usage */
+ p = strstr(buf, "age[");
+ if (!p)
+ continue;
+ p += 4;
+ usage[level] += bb_strtoull(p, NULL, 10) + 1;
+
+ /* Get duration */
+ p = strstr(buf, "ation[");
+ if (!p)
+ continue;
+ p += 6;
+ duration[level] += bb_strtoull(p, NULL, 10);
+
+ /* Increment level */
+ level++;
+
+ /* Also update maxcstate */
+ if (level > G.maxcstate)
+ G.maxcstate = level;
+ }
+ fclose(fp);
+ }
+ closedir(dir);
+}
+
+/* Add line and/or update count */
+static void push_line(const char *string, int count)
+{
+ int i;
+
+ if (!string)
+ return;
+
+ /* Loop through entries */
+ for (i = 0; i < G.headline; i++) {
+ if (strcmp(string, G.lines[i].string) == 0) {
+ /* It's already there, only update count */
+ G.lines[i].count += count;
+ return;
+ }
+ }
+
+ G.lines = xrealloc_vector(G.lines, 1, G.headline);
+
+ G.lines[G.headline].string = xstrdup(string);
+ G.lines[G.headline].count = count;
+ G.lines[G.headline].disk_count = 0;
+
+ /* We added a line */
+ G.headline++;
+}
+
+#if ENABLE_FEATURE_POWERTOP_PROCIRQ
+static int percpu_hpet_timer(const char *name)
+{
+ char *p;
+ long hpet_chan;
+
+ /* This is done once */
+ if (!G.timer_list_read) {
+ FILE *fp;
+ char buf[80];
+
+ G.timer_list_read = true;
+ fp = fopen_for_read("/proc/timer_list");
+ if (!fp)
+ return 0;
+
+ while (fgets(buf, sizeof(buf), fp)) {
+ p = strstr(buf, "Clock Event Device: hpet");
+ if (!p)
+ continue;
+ p += sizeof("Clock Event Device: hpet")-1;
+ if (!isdigit(p[0]))
+ continue;
+ hpet_chan = xatoi_positive(p);
+ if (hpet_chan < G.percpu_hpet_start)
+ G.percpu_hpet_start = hpet_chan;
+ if (hpet_chan > G.percpu_hpet_end)
+ G.percpu_hpet_end = hpet_chan;
+ }
+ fclose(fp);
+ }
+
+ p = strstr(name, "hpet");
+ if (!p)
+ return 0;
+
+ p += 4;
+ if (!isdigit(p[0]))
+ return 0;
+
+ hpet_chan = xatoi_positive(p);
+ if (G.percpu_hpet_start <= hpet_chan && hpet_chan <= G.percpu_hpet_end)
+ return 1;
+
+ return 0;
+}
+
+static int update_irq(int irq, ullong count)
+{
+ int unused = IRQCOUNT;
+ int i;
+
+ for (i = 0; i < IRQCOUNT; i++) {
+ if (G.interrupts[i].active && G.interrupts[i].number == irq) {
+ ullong old;
+ old = G.interrupts[i].count;
+ G.interrupts[i].count = count;
+ return count - old;
+ }
+ if (!G.interrupts[i].active && unused > i)
+ unused = i;
+ }
+
+ G.interrupts[unused].active = 1;
+ G.interrupts[unused].count = count;
+ G.interrupts[unused].number = irq;
+
+ return count;
+}
+
+/*
+ * Read /proc/interrupts, save IRQ counts and IRQ description.
+ */
+static void do_proc_irq(void)
+{
+ FILE *fp;
+ char buf[128];
+
+ /* Reset values */
+ G.interrupt_0 = 0;
+ G.total_interrupt = 0;
+
+ fp = xfopen_for_read("/proc/interrupts");
+ while (fgets(buf, sizeof(buf), fp)) {
+ char irq_desc[sizeof(" <kernel IPI> : ") + sizeof(buf)];
+ char *p;
+ const char *name;
+ int nr = -1;
+ ullong count;
+ ullong delta;
+ int special;
+
+ /* Skip header */
+ p = strchr(buf, ':');
+ if (!p)
+ continue;
+ /* 0: 143646045 153901007 IO-APIC-edge timer
+ * ^
+ */
+ /* Deal with non-maskable interrupts -- make up fake numbers */
+ special = 0;
+ if (buf[0] != ' ' && !isdigit(buf[0])) {
+ 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;
+ special = 1;
+ } else {
+ /* bb_strtou don't eat leading spaces, using strtoul */
+ nr = strtoul(buf, NULL, 10); /* xato*() wouldn't work */
+ }
+ if (nr == -1)
+ continue;
+
+ p++;
+ /* 0: 143646045 153901007 IO-APIC-edge timer
+ * ^
+ */
+ /* Count sum of the IRQs */
+ count = 0;
+ while (1) {
+ char *tmp;
+ p = skip_whitespace(p);
+ if (!isdigit(*p))
+ break;
+ count += bb_strtoull(p, &tmp, 10);
+ p = tmp;
+ }
+ /* 0: 143646045 153901007 IO-APIC-edge timer
+ * NMI: 1 2 Non-maskable interrupts
+ * ^
+ */
+ if (!special) {
+ /* Skip to the interrupt name, e.g. 'timer' */
+ p = strchr(p, ' ');
+ if (!p)
+ continue;
+ p = skip_whitespace(p);
+ }
+
+ name = p;
+ strchrnul(name, '\n')[0] = '\0';
+ /* Save description of the interrupt */
+ if (special)
+ sprintf(irq_desc, " <kernel IPI> : %s", name);
+ else
+ sprintf(irq_desc, " <interrupt> : %s", name);
+
+ delta = update_irq(nr, count);
+
+ /* Skip per CPU timer interrupts */
+ if (percpu_hpet_timer(name))
+ delta = 0;
+ if (nr > 0 && delta > 0)
+ push_line(irq_desc, delta);
+ if (!nr)
+ G.interrupt_0 = delta;
+ else
+ G.total_interrupt += delta;
+ }
+
+ fclose(fp);
+}
+#endif /* ENABLE_FEATURE_POWERTOP_PROCIRQ */
+
+#ifdef __i386__
+/*
+ * Get information about CPU using CPUID opcode.
+ */
+static void cpuid(unsigned int *eax, unsigned int *ebx, unsigned int *ecx,
+ unsigned int *edx)
+{
+ /* EAX value specifies what information to return */
+ __asm__(
+ " pushl %%ebx\n" /* Save EBX */
+ " cpuid\n"
+ " movl %%ebx, %1\n" /* Save content of EBX */
+ " popl %%ebx\n" /* Restore EBX */
+ : "=a"(*eax), /* Output */
+ "=r"(*ebx),
+ "=c"(*ecx),
+ "=d"(*edx)
+ : "0"(*eax), /* Input */
+ "1"(*ebx),
+ "2"(*ecx),
+ "3"(*edx)
+ /* No clobbered registers */
+ );
+}
+#endif
+
+static void NOINLINE print_intel_cstates(void)
+{
+#ifdef __i386__
+ int bios_table[8] = { 0 };
+ int nbios = 0;
+ DIR *cpudir;
+ struct dirent *d;
+ int i;
+ unsigned eax, ebx, ecx, edx;
+
+ cpudir = opendir("/sys/devices/system/cpu");
+ if (!cpudir)
+ return;
+
+ /* Loop over cpuN entries */
+ while ((d = readdir(cpudir)) != NULL) {
+ DIR *dir;
+ int len;
+ char fname[sizeof("/sys/devices/system/cpu//cpuidle//desc") + 2*BIG_SYSNAME_LEN];
+
+ len = strlen(d->d_name);
+ if (len < 3 || len > BIG_SYSNAME_LEN)
+ continue;
+
+ if (!isdigit(d->d_name[3]))
+ continue;
+
+ len = sprintf(fname, "/sys/devices/system/cpu/%s/cpuidle", d->d_name);
+ dir = opendir(fname);
+ if (!dir)
+ continue;
+
+ /*
+ * 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);
+ 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;
+ p += sizeof("MWAIT ") - 1;
+ pos = (bb_strtoull(p, NULL, 16) >> 4) + 1;
+ if (pos >= ARRAY_SIZE(bios_table))
+ continue;
+ bios_table[pos]++;
+ nbios++;
+ }
+ }
+ }
+ 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;
+}
diff --git a/util-linux/Config.src b/util-linux/Config.src
index 19b309e57..c71b4de38 100644
--- a/util-linux/Config.src
+++ b/util-linux/Config.src
@@ -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
--
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