From a5969cabbb4660eab42b6ef0412cbbd1200cf14d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 12 Oct 2024 07:10:09 +0000
Subject: [PATCH] 修改led为gpio
---
kernel/fs/proc/stat.c | 112 ++++++++++++++++++++++++++++++++++++-------------------
1 files changed, 73 insertions(+), 39 deletions(-)
diff --git a/kernel/fs/proc/stat.c b/kernel/fs/proc/stat.c
index 535eda7..3bed48d 100644
--- a/kernel/fs/proc/stat.c
+++ b/kernel/fs/proc/stat.c
@@ -23,21 +23,21 @@
#ifdef arch_idle_time
-static u64 get_idle_time(int cpu)
+u64 get_idle_time(struct kernel_cpustat *kcs, int cpu)
{
u64 idle;
- idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE];
+ idle = kcs->cpustat[CPUTIME_IDLE];
if (cpu_online(cpu) && !nr_iowait_cpu(cpu))
idle += arch_idle_time(cpu);
return idle;
}
-static u64 get_iowait_time(int cpu)
+static u64 get_iowait_time(struct kernel_cpustat *kcs, int cpu)
{
u64 iowait;
- iowait = kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT];
+ iowait = kcs->cpustat[CPUTIME_IOWAIT];
if (cpu_online(cpu) && nr_iowait_cpu(cpu))
iowait += arch_idle_time(cpu);
return iowait;
@@ -45,7 +45,7 @@
#else
-static u64 get_idle_time(int cpu)
+u64 get_idle_time(struct kernel_cpustat *kcs, int cpu)
{
u64 idle, idle_usecs = -1ULL;
@@ -54,14 +54,14 @@
if (idle_usecs == -1ULL)
/* !NO_HZ or cpu offline so we can rely on cpustat.idle */
- idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE];
+ idle = kcs->cpustat[CPUTIME_IDLE];
else
idle = idle_usecs * NSEC_PER_USEC;
return idle;
}
-static u64 get_iowait_time(int cpu)
+static u64 get_iowait_time(struct kernel_cpustat *kcs, int cpu)
{
u64 iowait, iowait_usecs = -1ULL;
@@ -70,7 +70,7 @@
if (iowait_usecs == -1ULL)
/* !NO_HZ or cpu offline so we can rely on cpustat.iowait */
- iowait = kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT];
+ iowait = kcs->cpustat[CPUTIME_IOWAIT];
else
iowait = iowait_usecs * NSEC_PER_USEC;
@@ -78,6 +78,31 @@
}
#endif
+
+static void show_irq_gap(struct seq_file *p, unsigned int gap)
+{
+ static const char zeros[] = " 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0";
+
+ while (gap > 0) {
+ unsigned int inc;
+
+ inc = min_t(unsigned int, gap, ARRAY_SIZE(zeros) / 2);
+ seq_write(p, zeros, 2 * inc);
+ gap -= inc;
+ }
+}
+
+static void show_all_irqs(struct seq_file *p)
+{
+ unsigned int i, next = 0;
+
+ for_each_active_irq(i) {
+ show_irq_gap(p, i - next);
+ seq_put_decimal_ull(p, " ", kstat_irqs_usr(i));
+ next = i + 1;
+ }
+ show_irq_gap(p, nr_irqs - next);
+}
static int show_stat(struct seq_file *p, void *v)
{
@@ -95,18 +120,23 @@
getboottime64(&boottime);
for_each_possible_cpu(i) {
- user += kcpustat_cpu(i).cpustat[CPUTIME_USER];
- nice += kcpustat_cpu(i).cpustat[CPUTIME_NICE];
- system += kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM];
- idle += get_idle_time(i);
- iowait += get_iowait_time(i);
- irq += kcpustat_cpu(i).cpustat[CPUTIME_IRQ];
- softirq += kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ];
- steal += kcpustat_cpu(i).cpustat[CPUTIME_STEAL];
- guest += kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
- guest_nice += kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
- sum += kstat_cpu_irqs_sum(i);
- sum += arch_irq_stat_cpu(i);
+ struct kernel_cpustat kcpustat;
+ u64 *cpustat = kcpustat.cpustat;
+
+ kcpustat_cpu_fetch(&kcpustat, i);
+
+ user += cpustat[CPUTIME_USER];
+ nice += cpustat[CPUTIME_NICE];
+ system += cpustat[CPUTIME_SYSTEM];
+ idle += get_idle_time(&kcpustat, i);
+ iowait += get_iowait_time(&kcpustat, i);
+ irq += cpustat[CPUTIME_IRQ];
+ softirq += cpustat[CPUTIME_SOFTIRQ];
+ steal += cpustat[CPUTIME_STEAL];
+ guest += cpustat[CPUTIME_GUEST];
+ guest_nice += cpustat[CPUTIME_GUEST_NICE];
+ sum += kstat_cpu_irqs_sum(i);
+ sum += arch_irq_stat_cpu(i);
for (j = 0; j < NR_SOFTIRQS; j++) {
unsigned int softirq_stat = kstat_softirqs_cpu(j, i);
@@ -130,17 +160,22 @@
seq_putc(p, '\n');
for_each_online_cpu(i) {
+ struct kernel_cpustat kcpustat;
+ u64 *cpustat = kcpustat.cpustat;
+
+ kcpustat_cpu_fetch(&kcpustat, i);
+
/* Copy values here to work around gcc-2.95.3, gcc-2.96 */
- user = kcpustat_cpu(i).cpustat[CPUTIME_USER];
- nice = kcpustat_cpu(i).cpustat[CPUTIME_NICE];
- system = kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM];
- idle = get_idle_time(i);
- iowait = get_iowait_time(i);
- irq = kcpustat_cpu(i).cpustat[CPUTIME_IRQ];
- softirq = kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ];
- steal = kcpustat_cpu(i).cpustat[CPUTIME_STEAL];
- guest = kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
- guest_nice = kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
+ user = cpustat[CPUTIME_USER];
+ nice = cpustat[CPUTIME_NICE];
+ system = cpustat[CPUTIME_SYSTEM];
+ idle = get_idle_time(&kcpustat, i);
+ iowait = get_iowait_time(&kcpustat, i);
+ irq = cpustat[CPUTIME_IRQ];
+ softirq = cpustat[CPUTIME_SOFTIRQ];
+ steal = cpustat[CPUTIME_STEAL];
+ guest = cpustat[CPUTIME_GUEST];
+ guest_nice = cpustat[CPUTIME_GUEST_NICE];
seq_printf(p, "cpu%d", i);
seq_put_decimal_ull(p, " ", nsec_to_clock_t(user));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(nice));
@@ -156,9 +191,7 @@
}
seq_put_decimal_ull(p, "intr ", (unsigned long long)sum);
- /* sum again ? it could be updated? */
- for_each_irq_nr(j)
- seq_put_decimal_ull(p, " ", kstat_irqs_usr(j));
+ show_all_irqs(p);
seq_printf(p,
"\nctxt %llu\n"
@@ -190,16 +223,17 @@
return single_open_size(file, show_stat, NULL, size);
}
-static const struct file_operations proc_stat_operations = {
- .open = stat_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
+static const struct proc_ops stat_proc_ops = {
+ .proc_flags = PROC_ENTRY_PERMANENT,
+ .proc_open = stat_open,
+ .proc_read_iter = seq_read_iter,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
};
static int __init proc_stat_init(void)
{
- proc_create("stat", 0, NULL, &proc_stat_operations);
+ proc_create("stat", 0, NULL, &stat_proc_ops);
return 0;
}
fs_initcall(proc_stat_init);
--
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