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Diffstat (limited to 'block/blk-iolatency.c')
-rw-r--r--block/blk-iolatency.c38
1 files changed, 19 insertions, 19 deletions
diff --git a/block/blk-iolatency.c b/block/blk-iolatency.c
index d8b0d8bd132b..c0545f9da549 100644
--- a/block/blk-iolatency.c
+++ b/block/blk-iolatency.c
@@ -890,8 +890,7 @@ static int iolatency_print_limit(struct seq_file *sf, void *v)
return 0;
}
-static size_t iolatency_ssd_stat(struct iolatency_grp *iolat, char *buf,
- size_t size)
+static bool iolatency_ssd_stat(struct iolatency_grp *iolat, struct seq_file *s)
{
struct latency_stat stat;
int cpu;
@@ -906,39 +905,40 @@ static size_t iolatency_ssd_stat(struct iolatency_grp *iolat, char *buf,
preempt_enable();
if (iolat->rq_depth.max_depth == UINT_MAX)
- return scnprintf(buf, size, " missed=%llu total=%llu depth=max",
- (unsigned long long)stat.ps.missed,
- (unsigned long long)stat.ps.total);
- return scnprintf(buf, size, " missed=%llu total=%llu depth=%u",
- (unsigned long long)stat.ps.missed,
- (unsigned long long)stat.ps.total,
- iolat->rq_depth.max_depth);
+ seq_printf(s, " missed=%llu total=%llu depth=max",
+ (unsigned long long)stat.ps.missed,
+ (unsigned long long)stat.ps.total);
+ else
+ seq_printf(s, " missed=%llu total=%llu depth=%u",
+ (unsigned long long)stat.ps.missed,
+ (unsigned long long)stat.ps.total,
+ iolat->rq_depth.max_depth);
+ return true;
}
-static size_t iolatency_pd_stat(struct blkg_policy_data *pd, char *buf,
- size_t size)
+static bool iolatency_pd_stat(struct blkg_policy_data *pd, struct seq_file *s)
{
struct iolatency_grp *iolat = pd_to_lat(pd);
unsigned long long avg_lat;
unsigned long long cur_win;
if (!blkcg_debug_stats)
- return 0;
+ return false;
if (iolat->ssd)
- return iolatency_ssd_stat(iolat, buf, size);
+ return iolatency_ssd_stat(iolat, s);
avg_lat = div64_u64(iolat->lat_avg, NSEC_PER_USEC);
cur_win = div64_u64(iolat->cur_win_nsec, NSEC_PER_MSEC);
if (iolat->rq_depth.max_depth == UINT_MAX)
- return scnprintf(buf, size, " depth=max avg_lat=%llu win=%llu",
- avg_lat, cur_win);
-
- return scnprintf(buf, size, " depth=%u avg_lat=%llu win=%llu",
- iolat->rq_depth.max_depth, avg_lat, cur_win);
+ seq_printf(s, " depth=max avg_lat=%llu win=%llu",
+ avg_lat, cur_win);
+ else
+ seq_printf(s, " depth=%u avg_lat=%llu win=%llu",
+ iolat->rq_depth.max_depth, avg_lat, cur_win);
+ return true;
}
-
static struct blkg_policy_data *iolatency_pd_alloc(gfp_t gfp,
struct request_queue *q,
struct blkcg *blkcg)