LU-2396 ofd: Remove unmaintained brw_stats

[fs/lustre-release.git] / lustre / ofd / lproc_ofd.c

diff --git a/lustre/ofd/lproc_ofd.c b/lustre/ofd/lproc_ofd.c
index 272aba7..0d91844 100644 (file)
--- a/lustre/ofd/lproc_ofd.c
+++ b/lustre/ofd/lproc_ofd.c
@@ -517,153 +517,12 @@ static struct lprocfs_vars lprocfs_ofd_module_vars[] = {
        { 0 }
 };
 
-#define pct(a,b) (b ? a * 100 / b : 0)
-
-static void display_brw_stats(struct seq_file *seq, char *name, char *units,
-                             struct obd_histogram *read,
-                             struct obd_histogram *write, int log2)
-{
-       unsigned long   read_tot, write_tot, r, w, read_cum = 0, write_cum = 0;
-       int             i;
-
-       seq_printf(seq, "\n%26s read      |     write\n", " ");
-       seq_printf(seq, "%-22s %-5s %% cum %% |  %-5s %% cum %%\n",
-                  name, units, units);
-
-       read_tot = lprocfs_oh_sum(read);
-       write_tot = lprocfs_oh_sum(write);
-       for (i = 0; i < OBD_HIST_MAX; i++) {
-               r = read->oh_buckets[i];
-               w = write->oh_buckets[i];
-               read_cum += r;
-               write_cum += w;
-               if (read_cum == 0 && write_cum == 0)
-                       continue;
-
-               if (!log2)
-                       seq_printf(seq, "%u", i);
-               else if (i < 10)
-                       seq_printf(seq, "%u", 1 << i);
-               else if (i < 20)
-                       seq_printf(seq, "%uK", 1 << (i - 10));
-               else
-                       seq_printf(seq, "%uM", 1 << (i - 20));
-
-               seq_printf(seq, ":\t\t%10lu %3lu %3lu   | %4lu %3lu %3lu\n",
-                          r, pct(r, read_tot), pct(read_cum, read_tot),
-                          w, pct(w, write_tot), pct(write_cum, write_tot));
-
-               if (read_cum == read_tot && write_cum == write_tot)
-                       break;
-       }
-}
-
-static void brw_stats_show(struct seq_file *seq, struct brw_stats *brw_stats)
-{
-       struct timeval  now;
-       char            title[24];
-
-       /* this sampling races with updates */
-       cfs_gettimeofday(&now);
-       seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
-                  now.tv_sec, now.tv_usec);
-
-       display_brw_stats(seq, "pages per bulk r/w", "rpcs",
-                         &brw_stats->hist[BRW_R_PAGES],
-                         &brw_stats->hist[BRW_W_PAGES], 1);
-
-       display_brw_stats(seq, "discontiguous pages", "rpcs",
-                         &brw_stats->hist[BRW_R_DISCONT_PAGES],
-                         &brw_stats->hist[BRW_W_DISCONT_PAGES], 0);
-
-       display_brw_stats(seq, "discontiguous blocks", "rpcs",
-                         &brw_stats->hist[BRW_R_DISCONT_BLOCKS],
-                         &brw_stats->hist[BRW_W_DISCONT_BLOCKS], 0);
-
-       display_brw_stats(seq, "disk fragmented I/Os", "ios",
-                         &brw_stats->hist[BRW_R_DIO_FRAGS],
-                         &brw_stats->hist[BRW_W_DIO_FRAGS], 0);
-
-       display_brw_stats(seq, "disk I/Os in flight", "ios",
-                         &brw_stats->hist[BRW_R_RPC_HIST],
-                         &brw_stats->hist[BRW_W_RPC_HIST], 0);
-
-       sprintf(title, "I/O time (1/%ds)", CFS_HZ);
-       display_brw_stats(seq, title, "ios",
-                         &brw_stats->hist[BRW_R_IO_TIME],
-                         &brw_stats->hist[BRW_W_IO_TIME], 1);
-
-       display_brw_stats(seq, "disk I/O size", "ios",
-                         &brw_stats->hist[BRW_R_DISK_IOSIZE],
-                         &brw_stats->hist[BRW_W_DISK_IOSIZE], 1);
-}
-
-#undef pct
-
-static int ofd_brw_stats_seq_show(struct seq_file *seq, void *v)
-{
-       struct obd_device *dev = seq->private;
-       struct filter_obd *ofd = &dev->u.filter;
-
-       brw_stats_show(seq, &ofd->fo_filter_stats);
-
-       return 0;
-}
-
-static ssize_t ofd_brw_stats_seq_write(struct file *file, const char *buf,
-                                      size_t len, loff_t *off)
-{
-       struct seq_file         *seq = file->private_data;
-       struct obd_device       *dev = seq->private;
-       struct filter_obd       *ofd = &dev->u.filter;
-       int                      i;
-
-       for (i = 0; i < BRW_LAST; i++)
-               lprocfs_oh_clear(&ofd->fo_filter_stats.hist[i]);
-
-       return len;
-}
-
-LPROC_SEQ_FOPS(ofd_brw_stats);
-
-int lproc_ofd_attach_seqstat(struct obd_device *dev)
-{
-       return lprocfs_obd_seq_create(dev, "brw_stats", 0644,
-                                     &ofd_brw_stats_fops, dev);
-}
-
 void lprocfs_ofd_init_vars(struct lprocfs_static_vars *lvars)
 {
        lvars->module_vars  = lprocfs_ofd_module_vars;
        lvars->obd_vars     = lprocfs_ofd_obd_vars;
 }
 
-static int ofd_per_nid_stats_seq_show(struct seq_file *seq, void *v)
-{
-       nid_stat_t *stat = seq->private;
-
-       if (stat->nid_brw_stats)
-               brw_stats_show(seq, stat->nid_brw_stats);
-
-       return 0;
-}
-
-static ssize_t ofd_per_nid_stats_seq_write(struct file *file, const char *buf,
-                                          size_t len, loff_t *off)
-{
-       struct seq_file *seq = file->private_data;
-        nid_stat_t     *stat = seq->private;
-        int             i;
-
-       if (stat->nid_brw_stats)
-               for (i = 0; i < BRW_LAST; i++)
-                       lprocfs_oh_clear(&stat->nid_brw_stats->hist[i]);
-
-       return len;
-}
-
-LPROC_SEQ_FOPS(ofd_per_nid_stats);
-
 void ofd_stats_counter_init(struct lprocfs_stats *stats)
 {
        LASSERT(stats && stats->ls_num == LPROC_OFD_STATS_LAST);