The branch stable/13 has been updated by zec:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=602f81ea50d5456389fef22d4eb48192ac4e3050

commit 602f81ea50d5456389fef22d4eb48192ac4e3050
Author:     Marko Zec <z...@freebsd.org>
AuthorDate: 2021-10-09 11:47:10 +0000
Commit:     Marko Zec <z...@freebsd.org>
CommitDate: 2021-10-13 20:06:49 +0000

    [fib_algo][dxr] Retire counters which are no longer used
    
    The number of chunks can still be tracked via vmstat -z|fgrep dxr.
    
    MFC after:      3 days
---
 sys/netinet/in_fib_dxr.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/sys/netinet/in_fib_dxr.c b/sys/netinet/in_fib_dxr.c
index d832a66ee2cc..f23db925444f 100644
--- a/sys/netinet/in_fib_dxr.c
+++ b/sys/netinet/in_fib_dxr.c
@@ -194,8 +194,6 @@ struct dxr_aux {
        uint32_t                prefixes;
        uint32_t                updates_low;
        uint32_t                updates_high;
-       uint32_t                all_chunks_cnt;
-       uint32_t                unused_chunks_cnt;
        uint32_t                unused_chunks_size;
        uint32_t                xtbl_size;
        uint32_t                all_trie_cnt;
@@ -452,7 +450,6 @@ chunk_ref(struct dxr_aux *da, uint32_t chunk)
                    size * sizeof(struct range_entry_long));
                fdesc->base = cdp->cd_base;
                da->rtbl_top -= size;
-               da->unused_chunks_cnt--;
                da->unused_chunks_size -= cdp->cd_max_size;
                if (cdp->cd_max_size > size) {
                        /* Split the range in two, need a new descriptor */
@@ -470,8 +467,6 @@ chunk_ref(struct dxr_aux *da, uint32_t chunk)
                        LIST_INSERT_HEAD(&da->unused_chunks[i], empty_cdp,
                            cd_hash_le);
 
-                       da->all_chunks_cnt++;
-                       da->unused_chunks_cnt++;
                        da->unused_chunks_size += empty_cdp->cd_max_size;
                        cdp->cd_max_size = size;
                }
@@ -484,7 +479,6 @@ chunk_ref(struct dxr_aux *da, uint32_t chunk)
                cdp->cd_max_size = size;
                cdp->cd_base = fdesc->base;
                LIST_INSERT_HEAD(&da->all_chunks, cdp, cd_all_le);
-               da->all_chunks_cnt++;
                KASSERT(cdp->cd_base + cdp->cd_max_size == da->rtbl_top,
                    ("dxr: %s %d", __FUNCTION__, __LINE__));
        }
@@ -538,7 +532,6 @@ chunk_unref(struct dxr_aux *da, uint32_t chunk)
                return;
 
        LIST_REMOVE(cdp, cd_hash_le);
-       da->unused_chunks_cnt++;
        da->unused_chunks_size += cdp->cd_max_size;
        cdp->cd_cur_size = 0;
 
@@ -548,9 +541,7 @@ chunk_unref(struct dxr_aux *da, uint32_t chunk)
                KASSERT(cdp2->cd_base + cdp2->cd_max_size == cdp->cd_base,
                    ("dxr: %s %d", __FUNCTION__, __LINE__));
                LIST_REMOVE(cdp, cd_all_le);
-               da->all_chunks_cnt--;
                LIST_REMOVE(cdp2, cd_hash_le);
-               da->unused_chunks_cnt--;
                cdp2->cd_max_size += cdp->cd_max_size;
                uma_zfree(chunk_zone, cdp);
                cdp = cdp2;
@@ -562,9 +553,7 @@ chunk_unref(struct dxr_aux *da, uint32_t chunk)
                KASSERT(cdp->cd_base + cdp->cd_max_size == cdp2->cd_base,
                    ("dxr: %s %d", __FUNCTION__, __LINE__));
                LIST_REMOVE(cdp, cd_all_le);
-               da->all_chunks_cnt--;
                LIST_REMOVE(cdp2, cd_hash_le);
-               da->unused_chunks_cnt--;
                cdp2->cd_max_size += cdp->cd_max_size;
                cdp2->cd_base = cdp->cd_base;
                uma_zfree(chunk_zone, cdp);
@@ -575,8 +564,6 @@ chunk_unref(struct dxr_aux *da, uint32_t chunk)
                /* Free the chunk on the top of the range heap, trim the heap */
                KASSERT(cdp == LIST_FIRST(&da->all_chunks),
                    ("dxr: %s %d", __FUNCTION__, __LINE__));
-               da->all_chunks_cnt--;
-               da->unused_chunks_cnt--;
                da->rtbl_top -= cdp->cd_max_size;
                da->unused_chunks_size -= cdp->cd_max_size;
                LIST_REMOVE(cdp, cd_all_le);
@@ -945,7 +932,6 @@ range_build:
                }
                for (i = 0; i < UNUSED_BUCKETS; i++)
                        LIST_INIT(&da->unused_chunks[i]);
-               da->all_chunks_cnt = da->unused_chunks_cnt = 0;
                da->unused_chunks_size = 0;
                da->rtbl_top = 0;
                da->updates_low = 0;

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