#include <linux/string.h>
#include <linux/types.h>
#include <linux/sched/clock.h>
-#include <linux/mean_and_variance.h>
#include "eytzinger.h"
+#include "mean_and_variance.h"
#include "util.h"
static const char si_units[] = "?kMGTPEZY";
console_unlock();
}
-int bch2_save_backtrace(bch_stacktrace *stack, struct task_struct *task)
+int bch2_save_backtrace(bch_stacktrace *stack, struct task_struct *task, unsigned skipnr)
{
#ifdef CONFIG_STACKTRACE
unsigned nr_entries = 0;
return -1;
do {
- nr_entries = stack_trace_save_tsk(task, stack->data, stack->size, 0);
+ nr_entries = stack_trace_save_tsk(task, stack->data, stack->size, skipnr + 1);
} while (nr_entries == stack->size &&
!(ret = darray_make_room(stack, stack->size * 2)));
void bch2_prt_backtrace(struct printbuf *out, bch_stacktrace *stack)
{
- unsigned long *i;
-
darray_for_each(*stack, i) {
prt_printf(out, "[<0>] %pB", (void *) *i);
prt_newline(out);
}
}
-int bch2_prt_task_backtrace(struct printbuf *out, struct task_struct *task)
+int bch2_prt_task_backtrace(struct printbuf *out, struct task_struct *task, unsigned skipnr)
{
bch_stacktrace stack = { 0 };
- int ret = bch2_save_backtrace(&stack, task);
+ int ret = bch2_save_backtrace(&stack, task, skipnr + 1);
bch2_prt_backtrace(out, &stack);
darray_exit(&stack);
return ret;
}
+#ifndef __KERNEL__
+#include <time.h>
+void bch2_prt_datetime(struct printbuf *out, time64_t sec)
+{
+ time_t t = sec;
+ char buf[64];
+ ctime_r(&t, buf);
+ strim(buf);
+ prt_str(out, buf);
+}
+#else
+void bch2_prt_datetime(struct printbuf *out, time64_t sec)
+{
+ char buf[64];
+ snprintf(buf, sizeof(buf), "%ptT", &sec);
+ prt_u64(out, sec);
+}
+#endif
+
+static const struct time_unit {
+ const char *name;
+ u64 nsecs;
+} time_units[] = {
+ { "ns", 1 },
+ { "us", NSEC_PER_USEC },
+ { "ms", NSEC_PER_MSEC },
+ { "s", NSEC_PER_SEC },
+ { "m", (u64) NSEC_PER_SEC * 60},
+ { "h", (u64) NSEC_PER_SEC * 3600},
+ { "eon", U64_MAX },
+};
+
+static const struct time_unit *pick_time_units(u64 ns)
+{
+ const struct time_unit *u;
+
+ for (u = time_units;
+ u + 1 < time_units + ARRAY_SIZE(time_units) &&
+ ns >= u[1].nsecs << 1;
+ u++)
+ ;
+
+ return u;
+}
+
+void bch2_pr_time_units(struct printbuf *out, u64 ns)
+{
+ const struct time_unit *u = pick_time_units(ns);
+
+ prt_printf(out, "%llu %s", div_u64(ns, u->nsecs), u->name);
+}
+
/* time stats: */
#ifndef CONFIG_BCACHEFS_NO_LATENCY_ACCT
mean_and_variance_weighted_update(&stats->duration_stats_weighted, duration);
stats->max_duration = max(stats->max_duration, duration);
stats->min_duration = min(stats->min_duration, duration);
+ stats->total_duration += duration;
bch2_quantiles_update(&stats->quantiles, duration);
}
}
}
+static void __bch2_time_stats_clear_buffer(struct bch2_time_stats *stats,
+ struct bch2_time_stat_buffer *b)
+{
+ for (struct bch2_time_stat_buffer_entry *i = b->entries;
+ i < b->entries + ARRAY_SIZE(b->entries);
+ i++)
+ bch2_time_stats_update_one(stats, i->start, i->end);
+ b->nr = 0;
+}
+
static noinline void bch2_time_stats_clear_buffer(struct bch2_time_stats *stats,
struct bch2_time_stat_buffer *b)
{
- struct bch2_time_stat_buffer_entry *i;
unsigned long flags;
spin_lock_irqsave(&stats->lock, flags);
- for (i = b->entries;
- i < b->entries + ARRAY_SIZE(b->entries);
- i++)
- bch2_time_stats_update_one(stats, i->start, i->end);
+ __bch2_time_stats_clear_buffer(stats, b);
spin_unlock_irqrestore(&stats->lock, flags);
-
- b->nr = 0;
}
void __bch2_time_stats_update(struct bch2_time_stats *stats, u64 start, u64 end)
{
unsigned long flags;
- WARN_RATELIMIT(!stats->min_duration || !stats->min_freq,
- "time_stats: min_duration = %llu, min_freq = %llu",
- stats->min_duration, stats->min_freq);
+ WARN_ONCE(!stats->duration_stats_weighted.weight ||
+ !stats->freq_stats_weighted.weight,
+ "uninitialized time_stats");
if (!stats->buffer) {
spin_lock_irqsave(&stats->lock, flags);
preempt_enable();
}
}
-#endif
-
-static const struct time_unit {
- const char *name;
- u64 nsecs;
-} time_units[] = {
- { "ns", 1 },
- { "us", NSEC_PER_USEC },
- { "ms", NSEC_PER_MSEC },
- { "s", NSEC_PER_SEC },
- { "m", (u64) NSEC_PER_SEC * 60},
- { "h", (u64) NSEC_PER_SEC * 3600},
- { "eon", U64_MAX },
-};
-
-static const struct time_unit *pick_time_units(u64 ns)
-{
- const struct time_unit *u;
-
- for (u = time_units;
- u + 1 < time_units + ARRAY_SIZE(time_units) &&
- ns >= u[1].nsecs << 1;
- u++)
- ;
-
- return u;
-}
-
-void bch2_pr_time_units(struct printbuf *out, u64 ns)
-{
- const struct time_unit *u = pick_time_units(ns);
-
- prt_printf(out, "%llu %s", div_u64(ns, u->nsecs), u->name);
-}
static void bch2_pr_time_units_aligned(struct printbuf *out, u64 ns)
{
prt_printf(out, "%s", u->name);
}
-#define TABSTOP_SIZE 12
-
static inline void pr_name_and_units(struct printbuf *out, const char *name, u64 ns)
{
prt_str(out, name);
prt_newline(out);
}
+#define TABSTOP_SIZE 12
+
void bch2_time_stats_to_text(struct printbuf *out, struct bch2_time_stats *stats)
{
const struct time_unit *u;
s64 f_mean = 0, d_mean = 0;
u64 q, last_q = 0, f_stddev = 0, d_stddev = 0;
int i;
+
+ if (stats->buffer) {
+ int cpu;
+
+ spin_lock_irq(&stats->lock);
+ for_each_possible_cpu(cpu)
+ __bch2_time_stats_clear_buffer(stats, per_cpu_ptr(stats->buffer, cpu));
+ spin_unlock_irq(&stats->lock);
+ }
+
/*
* avoid divide by zero
*/
pr_name_and_units(out, "min:", stats->min_duration);
pr_name_and_units(out, "max:", stats->max_duration);
+ pr_name_and_units(out, "total:", stats->total_duration);
prt_printf(out, "mean:");
prt_tab(out);
last_q = q;
}
}
+#else
+void bch2_time_stats_to_text(struct printbuf *out, struct bch2_time_stats *stats) {}
+#endif
void bch2_time_stats_exit(struct bch2_time_stats *stats)
{
return ret;
}
+
+void bch2_darray_str_exit(darray_str *d)
+{
+ darray_for_each(*d, i)
+ kfree(*i);
+ darray_exit(d);
+}
+
+int bch2_split_devs(const char *_dev_name, darray_str *ret)
+{
+ darray_init(ret);
+
+ char *dev_name = kstrdup(_dev_name, GFP_KERNEL), *s = dev_name;
+ if (!dev_name)
+ return -ENOMEM;
+
+ while ((s = strsep(&dev_name, ":"))) {
+ char *p = kstrdup(s, GFP_KERNEL);
+ if (!p)
+ goto err;
+
+ if (darray_push(ret, p)) {
+ kfree(p);
+ goto err;
+ }
+ }
+
+ kfree(dev_name);
+ return 0;
+err:
+ bch2_darray_str_exit(ret);
+ kfree(dev_name);
+ return -ENOMEM;
+}
projects / bcachefs-tools-debian / blobdiff