ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/kernel/time/timer_list.c b/marvell/linux/kernel/time/timer_list.c
new file mode 100644
index 0000000..6ae10e5
--- /dev/null
+++ b/marvell/linux/kernel/time/timer_list.c
@@ -0,0 +1,382 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * List pending timers
+ *
+ * Copyright(C) 2006, Red Hat, Inc., Ingo Molnar
+ */
+
+#include <linux/proc_fs.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/seq_file.h>
+#include <linux/kallsyms.h>
+#include <linux/nmi.h>
+
+#include <linux/uaccess.h>
+
+#include "tick-internal.h"
+
+struct timer_list_iter {
+ int cpu;
+ bool second_pass;
+ u64 now;
+};
+
+/*
+ * This allows printing both to /proc/timer_list and
+ * to the console (on SysRq-Q):
+ */
+__printf(2, 3)
+static void SEQ_printf(struct seq_file *m, const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+
+ if (m)
+ seq_vprintf(m, fmt, args);
+ else
+ vprintk(fmt, args);
+
+ va_end(args);
+}
+
+static void print_name_offset(struct seq_file *m, void *sym)
+{
+ char symname[KSYM_NAME_LEN];
+
+ if (lookup_symbol_name((unsigned long)sym, symname) < 0)
+ SEQ_printf(m, "<%pK>", sym);
+ else
+ SEQ_printf(m, "%s", symname);
+}
+
+static void
+print_timer(struct seq_file *m, struct hrtimer *taddr, struct hrtimer *timer,
+ int idx, u64 now)
+{
+ SEQ_printf(m, " #%d: ", idx);
+ print_name_offset(m, taddr);
+ SEQ_printf(m, ", ");
+ print_name_offset(m, timer->function);
+ SEQ_printf(m, ", S:%02x", timer->state);
+ SEQ_printf(m, "\n");
+ SEQ_printf(m, " # expires at %Lu-%Lu nsecs [in %Ld to %Ld nsecs]\n",
+ (unsigned long long)ktime_to_ns(hrtimer_get_softexpires(timer)),
+ (unsigned long long)ktime_to_ns(hrtimer_get_expires(timer)),
+ (long long)(ktime_to_ns(hrtimer_get_softexpires(timer)) - now),
+ (long long)(ktime_to_ns(hrtimer_get_expires(timer)) - now));
+}
+
+static void
+print_active_timers(struct seq_file *m, struct hrtimer_clock_base *base,
+ u64 now)
+{
+ struct hrtimer *timer, tmp;
+ unsigned long next = 0, i;
+ struct timerqueue_node *curr;
+ unsigned long flags;
+
+next_one:
+ i = 0;
+
+ touch_nmi_watchdog();
+
+ raw_spin_lock_irqsave(&base->cpu_base->lock, flags);
+
+ curr = timerqueue_getnext(&base->active);
+ /*
+ * Crude but we have to do this O(N*N) thing, because
+ * we have to unlock the base when printing:
+ */
+ while (curr && i < next) {
+ curr = timerqueue_iterate_next(curr);
+ i++;
+ }
+
+ if (curr) {
+
+ timer = container_of(curr, struct hrtimer, node);
+ tmp = *timer;
+ raw_spin_unlock_irqrestore(&base->cpu_base->lock, flags);
+
+ print_timer(m, timer, &tmp, i, now);
+ next++;
+ goto next_one;
+ }
+ raw_spin_unlock_irqrestore(&base->cpu_base->lock, flags);
+}
+
+static void
+print_base(struct seq_file *m, struct hrtimer_clock_base *base, u64 now)
+{
+ SEQ_printf(m, " .base: %pK\n", base);
+ SEQ_printf(m, " .index: %d\n", base->index);
+
+ SEQ_printf(m, " .resolution: %u nsecs\n", hrtimer_resolution);
+
+ SEQ_printf(m, " .get_time: ");
+ print_name_offset(m, base->get_time);
+ SEQ_printf(m, "\n");
+#ifdef CONFIG_HIGH_RES_TIMERS
+ SEQ_printf(m, " .offset: %Lu nsecs\n",
+ (unsigned long long) ktime_to_ns(base->offset));
+#endif
+ SEQ_printf(m, "active timers:\n");
+ print_active_timers(m, base, now + ktime_to_ns(base->offset));
+}
+
+static void print_cpu(struct seq_file *m, int cpu, u64 now)
+{
+ struct hrtimer_cpu_base *cpu_base = &per_cpu(hrtimer_bases, cpu);
+ int i;
+
+ SEQ_printf(m, "cpu: %d\n", cpu);
+ for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
+ SEQ_printf(m, " clock %d:\n", i);
+ print_base(m, cpu_base->clock_base + i, now);
+ }
+#define P(x) \
+ SEQ_printf(m, " .%-15s: %Lu\n", #x, \
+ (unsigned long long)(cpu_base->x))
+#define P_ns(x) \
+ SEQ_printf(m, " .%-15s: %Lu nsecs\n", #x, \
+ (unsigned long long)(ktime_to_ns(cpu_base->x)))
+
+#ifdef CONFIG_HIGH_RES_TIMERS
+ P_ns(expires_next);
+ P(hres_active);
+ P(nr_events);
+ P(nr_retries);
+ P(nr_hangs);
+ P(max_hang_time);
+#endif
+#undef P
+#undef P_ns
+
+#ifdef CONFIG_TICK_ONESHOT
+# define P(x) \
+ SEQ_printf(m, " .%-15s: %Lu\n", #x, \
+ (unsigned long long)(ts->x))
+# define P_ns(x) \
+ SEQ_printf(m, " .%-15s: %Lu nsecs\n", #x, \
+ (unsigned long long)(ktime_to_ns(ts->x)))
+ {
+ struct tick_sched *ts = tick_get_tick_sched(cpu);
+ P(nohz_mode);
+ P_ns(last_tick);
+ P(tick_stopped);
+ P(idle_jiffies);
+ P(idle_calls);
+ P(idle_sleeps);
+ P_ns(idle_entrytime);
+ P_ns(idle_waketime);
+ P_ns(idle_exittime);
+ P_ns(idle_sleeptime);
+ P_ns(iowait_sleeptime);
+ P(last_jiffies);
+ P(next_timer);
+ P_ns(idle_expires);
+ SEQ_printf(m, "jiffies: %Lu\n",
+ (unsigned long long)jiffies);
+ }
+#endif
+
+#undef P
+#undef P_ns
+ SEQ_printf(m, "\n");
+}
+
+#ifdef CONFIG_GENERIC_CLOCKEVENTS
+static void
+print_tickdevice(struct seq_file *m, struct tick_device *td, int cpu)
+{
+ struct clock_event_device *dev = td->evtdev;
+
+ touch_nmi_watchdog();
+
+ SEQ_printf(m, "Tick Device: mode: %d\n", td->mode);
+ if (cpu < 0)
+ SEQ_printf(m, "Broadcast device\n");
+ else
+ SEQ_printf(m, "Per CPU device: %d\n", cpu);
+
+ SEQ_printf(m, "Clock Event Device: ");
+ if (!dev) {
+ SEQ_printf(m, "<NULL>\n");
+ return;
+ }
+ SEQ_printf(m, "%s\n", dev->name);
+ SEQ_printf(m, " max_delta_ns: %llu\n",
+ (unsigned long long) dev->max_delta_ns);
+ SEQ_printf(m, " min_delta_ns: %llu\n",
+ (unsigned long long) dev->min_delta_ns);
+ SEQ_printf(m, " mult: %u\n", dev->mult);
+ SEQ_printf(m, " shift: %u\n", dev->shift);
+ SEQ_printf(m, " mode: %d\n", clockevent_get_state(dev));
+ SEQ_printf(m, " next_event: %Ld nsecs\n",
+ (unsigned long long) ktime_to_ns(dev->next_event));
+
+ SEQ_printf(m, " set_next_event: ");
+ print_name_offset(m, dev->set_next_event);
+ SEQ_printf(m, "\n");
+
+ if (dev->set_state_shutdown) {
+ SEQ_printf(m, " shutdown: ");
+ print_name_offset(m, dev->set_state_shutdown);
+ SEQ_printf(m, "\n");
+ }
+
+ if (dev->set_state_periodic) {
+ SEQ_printf(m, " periodic: ");
+ print_name_offset(m, dev->set_state_periodic);
+ SEQ_printf(m, "\n");
+ }
+
+ if (dev->set_state_oneshot) {
+ SEQ_printf(m, " oneshot: ");
+ print_name_offset(m, dev->set_state_oneshot);
+ SEQ_printf(m, "\n");
+ }
+
+ if (dev->set_state_oneshot_stopped) {
+ SEQ_printf(m, " oneshot stopped: ");
+ print_name_offset(m, dev->set_state_oneshot_stopped);
+ SEQ_printf(m, "\n");
+ }
+
+ if (dev->tick_resume) {
+ SEQ_printf(m, " resume: ");
+ print_name_offset(m, dev->tick_resume);
+ SEQ_printf(m, "\n");
+ }
+
+ SEQ_printf(m, " event_handler: ");
+ print_name_offset(m, dev->event_handler);
+ SEQ_printf(m, "\n");
+ SEQ_printf(m, " retries: %lu\n", dev->retries);
+ SEQ_printf(m, "\n");
+}
+
+static void timer_list_show_tickdevices_header(struct seq_file *m)
+{
+#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
+ print_tickdevice(m, tick_get_broadcast_device(), -1);
+ SEQ_printf(m, "tick_broadcast_mask: %*pb\n",
+ cpumask_pr_args(tick_get_broadcast_mask()));
+#ifdef CONFIG_TICK_ONESHOT
+ SEQ_printf(m, "tick_broadcast_oneshot_mask: %*pb\n",
+ cpumask_pr_args(tick_get_broadcast_oneshot_mask()));
+#endif
+ SEQ_printf(m, "\n");
+#endif
+}
+#endif
+
+static inline void timer_list_header(struct seq_file *m, u64 now)
+{
+ SEQ_printf(m, "Timer List Version: v0.8\n");
+ SEQ_printf(m, "HRTIMER_MAX_CLOCK_BASES: %d\n", HRTIMER_MAX_CLOCK_BASES);
+ SEQ_printf(m, "now at %Ld nsecs\n", (unsigned long long)now);
+ SEQ_printf(m, "\n");
+}
+
+void sysrq_timer_list_show(void)
+{
+ u64 now = ktime_to_ns(ktime_get());
+ int cpu;
+
+ timer_list_header(NULL, now);
+
+ for_each_online_cpu(cpu)
+ print_cpu(NULL, cpu, now);
+
+#ifdef CONFIG_GENERIC_CLOCKEVENTS
+ timer_list_show_tickdevices_header(NULL);
+ for_each_online_cpu(cpu)
+ print_tickdevice(NULL, tick_get_device(cpu), cpu);
+#endif
+ return;
+}
+
+#ifdef CONFIG_PROC_FS
+static int timer_list_show(struct seq_file *m, void *v)
+{
+ struct timer_list_iter *iter = v;
+
+ if (iter->cpu == -1 && !iter->second_pass)
+ timer_list_header(m, iter->now);
+ else if (!iter->second_pass)
+ print_cpu(m, iter->cpu, iter->now);
+#ifdef CONFIG_GENERIC_CLOCKEVENTS
+ else if (iter->cpu == -1 && iter->second_pass)
+ timer_list_show_tickdevices_header(m);
+ else
+ print_tickdevice(m, tick_get_device(iter->cpu), iter->cpu);
+#endif
+ return 0;
+}
+
+static void *move_iter(struct timer_list_iter *iter, loff_t offset)
+{
+ for (; offset; offset--) {
+ iter->cpu = cpumask_next(iter->cpu, cpu_online_mask);
+ if (iter->cpu >= nr_cpu_ids) {
+#ifdef CONFIG_GENERIC_CLOCKEVENTS
+ if (!iter->second_pass) {
+ iter->cpu = -1;
+ iter->second_pass = true;
+ } else
+ return NULL;
+#else
+ return NULL;
+#endif
+ }
+ }
+ return iter;
+}
+
+static void *timer_list_start(struct seq_file *file, loff_t *offset)
+{
+ struct timer_list_iter *iter = file->private;
+
+ if (!*offset)
+ iter->now = ktime_to_ns(ktime_get());
+ iter->cpu = -1;
+ iter->second_pass = false;
+ return move_iter(iter, *offset);
+}
+
+static void *timer_list_next(struct seq_file *file, void *v, loff_t *offset)
+{
+ struct timer_list_iter *iter = file->private;
+ ++*offset;
+ return move_iter(iter, 1);
+}
+
+static void timer_list_stop(struct seq_file *seq, void *v)
+{
+}
+
+static const struct seq_operations timer_list_sops = {
+ .start = timer_list_start,
+ .next = timer_list_next,
+ .stop = timer_list_stop,
+ .show = timer_list_show,
+};
+
+static int __init init_timer_list_procfs(void)
+{
+ struct proc_dir_entry *pe;
+
+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
+ return 0;
+ pe = proc_create_seq_private("timer_list", 0400, NULL, &timer_list_sops,
+ sizeof(struct timer_list_iter), NULL);
+ if (!pe)
+ return -ENOMEM;
+ return 0;
+}
+__initcall(init_timer_list_procfs);
+#endif