#define parse_or_ret(cp, _f) \
do { \
- int ret = _f; \
- if (ret < 0) \
- return ret; \
- cp += ret; \
+ int _ret = _f; \
+ if (_ret < 0) \
+ return _ret; \
+ cp += _ret; \
} while (0)
static int __bch2_strtou64_h(const char *cp, u64 *res)
while ((p = strsep(&s, ","))) {
int flag = match_string(list, -1, p);
+
if (flag < 0) {
ret = -1;
break;
return true;
}
-static void bch2_quantiles_update(struct bch2_quantiles *q, u64 v)
-{
- unsigned i = 0;
-
- while (i < ARRAY_SIZE(q->entries)) {
- struct bch2_quantile_entry *e = q->entries + i;
-
- if (unlikely(!e->step)) {
- e->m = v;
- e->step = max_t(unsigned, v / 2, 1024);
- } else if (e->m > v) {
- e->m = e->m >= e->step
- ? e->m - e->step
- : 0;
- } else if (e->m < v) {
- e->m = e->m + e->step > e->m
- ? e->m + e->step
- : U32_MAX;
- }
-
- if ((e->m > v ? e->m - v : v - e->m) < e->step)
- e->step = max_t(unsigned, e->step / 2, 1);
-
- if (v >= e->m)
- break;
-
- i = eytzinger0_child(i, v > e->m);
- }
-}
-
void bch2_prt_u64_binary(struct printbuf *out, u64 v, unsigned nr_bits)
{
while (nr_bits)
console_unlock();
}
-int bch2_prt_backtrace(struct printbuf *out, struct task_struct *task)
+int bch2_save_backtrace(bch_stacktrace *stack, struct task_struct *task)
{
- unsigned long entries[32];
- unsigned i, nr_entries;
+#ifdef CONFIG_STACKTRACE
+ unsigned nr_entries = 0;
+ int ret = 0;
+
+ stack->nr = 0;
+ ret = darray_make_room(stack, 32);
+ if (ret)
+ return ret;
if (!down_read_trylock(&task->signal->exec_update_lock))
- return 0;
+ return -1;
- nr_entries = stack_trace_save_tsk(task, entries, ARRAY_SIZE(entries), 0);
- for (i = 0; i < nr_entries; i++) {
- prt_printf(out, "[<0>] %pB", (void *)entries[i]);
- prt_newline(out);
- }
+ do {
+ nr_entries = stack_trace_save_tsk(task, stack->data, stack->size, 0);
+ } while (nr_entries == stack->size &&
+ !(ret = darray_make_room(stack, stack->size * 2)));
+ stack->nr = nr_entries;
up_read(&task->signal->exec_update_lock);
+
+ return ret;
+#else
return 0;
+#endif
+}
+
+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)
+{
+ bch_stacktrace stack = { 0 };
+ int ret = bch2_save_backtrace(&stack, task);
+
+ bch2_prt_backtrace(out, &stack);
+ darray_exit(&stack);
+ return ret;
}
/* time stats: */
#ifndef CONFIG_BCACHEFS_NO_LATENCY_ACCT
+static void bch2_quantiles_update(struct bch2_quantiles *q, u64 v)
+{
+ unsigned i = 0;
+
+ while (i < ARRAY_SIZE(q->entries)) {
+ struct bch2_quantile_entry *e = q->entries + i;
+
+ if (unlikely(!e->step)) {
+ e->m = v;
+ e->step = max_t(unsigned, v / 2, 1024);
+ } else if (e->m > v) {
+ e->m = e->m >= e->step
+ ? e->m - e->step
+ : 0;
+ } else if (e->m < v) {
+ e->m = e->m + e->step > e->m
+ ? e->m + e->step
+ : U32_MAX;
+ }
+
+ if ((e->m > v ? e->m - v : v - e->m) < e->step)
+ e->step = max_t(unsigned, e->step / 2, 1);
+
+ if (v >= e->m)
+ break;
+
+ i = eytzinger0_child(i, v > e->m);
+ }
+}
+
static inline void bch2_time_stats_update_one(struct bch2_time_stats *stats,
u64 start, u64 end)
{
if (time_after64(end, start)) {
duration = end - start;
- stats->duration_stats = mean_and_variance_update_inlined(stats->duration_stats,
- duration);
- stats->duration_stats_weighted = mean_and_variance_weighted_update(
- stats->duration_stats_weighted,
- duration);
+ mean_and_variance_update(&stats->duration_stats, duration);
+ 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);
bch2_quantiles_update(&stats->quantiles, duration);
if (time_after64(end, stats->last_event)) {
freq = end - stats->last_event;
- stats->freq_stats = mean_and_variance_update_inlined(stats->freq_stats, freq);
- stats->freq_stats_weighted = mean_and_variance_weighted_update(
- stats->freq_stats_weighted,
- freq);
+ mean_and_variance_update(&stats->freq_stats, freq);
+ mean_and_variance_weighted_update(&stats->freq_stats_weighted, freq);
stats->max_freq = max(stats->max_freq, freq);
stats->min_freq = min(stats->min_freq, freq);
stats->last_event = end;
{ "us", NSEC_PER_USEC },
{ "ms", NSEC_PER_MSEC },
{ "s", NSEC_PER_SEC },
- { "m", NSEC_PER_SEC * 60},
- { "h", NSEC_PER_SEC * 3600},
+ { "m", (u64) NSEC_PER_SEC * 60},
+ { "h", (u64) NSEC_PER_SEC * 3600},
{ "eon", U64_MAX },
};
void bch2_time_stats_init(struct bch2_time_stats *stats)
{
memset(stats, 0, sizeof(*stats));
- stats->duration_stats_weighted.w = 8;
- stats->freq_stats_weighted.w = 8;
+ stats->duration_stats_weighted.weight = 8;
+ stats->freq_stats_weighted.weight = 8;
stats->min_duration = U64_MAX;
stats->min_freq = U64_MAX;
spin_lock_init(&stats->lock);
/**
* bch2_ratelimit_delay() - return how long to delay until the next time to do
- * some work
- *
- * @d - the struct bch_ratelimit to update
- *
- * Returns the amount of time to delay by, in jiffies
+ * some work
+ * @d: the struct bch_ratelimit to update
+ * Returns: the amount of time to delay by, in jiffies
*/
u64 bch2_ratelimit_delay(struct bch_ratelimit *d)
{
/**
* bch2_ratelimit_increment() - increment @d by the amount of work done
- *
- * @d - the struct bch_ratelimit to update
- * @done - the amount of work done, in arbitrary units
+ * @d: the struct bch_ratelimit to update
+ * @done: the amount of work done, in arbitrary units
*/
void bch2_ratelimit_increment(struct bch_ratelimit *d, u64 done)
{
int bch2_bio_alloc_pages(struct bio *bio, size_t size, gfp_t gfp_mask)
{
while (size) {
- struct page *page = alloc_page(gfp_mask);
+ struct page *page = alloc_pages(gfp_mask, 0);
unsigned len = min_t(size_t, PAGE_SIZE, size);
if (!page)
struct bvec_iter iter;
__bio_for_each_segment(bv, dst, iter, dst_iter) {
- void *dstp = kmap_atomic(bv.bv_page);
+ void *dstp = kmap_local_page(bv.bv_page);
+
memcpy(dstp + bv.bv_offset, src, bv.bv_len);
- kunmap_atomic(dstp);
+ kunmap_local(dstp);
src += bv.bv_len;
}
struct bvec_iter iter;
__bio_for_each_segment(bv, src, iter, src_iter) {
- void *srcp = kmap_atomic(bv.bv_page);
+ void *srcp = kmap_local_page(bv.bv_page);
+
memcpy(dst, srcp + bv.bv_offset, bv.bv_len);
- kunmap_atomic(srcp);
+ kunmap_local(srcp);
dst += bv.bv_len;
}
projects / bcachefs-tools-debian / blobdiff