xfs_db: support computing btheight for all cursor types

Add the special magic btree type value 'all' to the btheight command so
that we can display information about all known btree types at once.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/db/btheight.c b/db/btheight.c
index 8aa17c895bb7b4acb775b0cbb95e0ce817cd66f9..e4cd4edabe8d9d676d039d57dfa4baeb7ef1ed61 100644 (file)
--- a/db/btheight.c
+++ b/db/btheight.c
@@ -57,7 +57,7 @@ btheight_help(void)
 "   -w min -- Show only the worst case scenario.\n"
 "\n"
 " Supported btree types:\n"
-"   "
+"   all "
 ));
        for (i = 0, m = maps; i < ARRAY_SIZE(maps); i++, m++)
                printf("%s ", m->tag);
@@ -107,7 +107,7 @@ calc_height(
 
 static int
 construct_records_per_block(
-       char            *tag,
+       const char      *tag,
        int             blocksize,
        unsigned int    *records_per_block)
 {
@@ -235,7 +235,7 @@ out:
 
 static void
 report(
-       char                    *tag,
+       const char              *tag,
        unsigned int            report_what,
        unsigned long long      nr_records,
        unsigned int            blocksize)
@@ -297,6 +297,19 @@ _("%s: worst case per %u-byte block: %u records (leaf) / %u keyptrs (node)\n"),
        }
 }
 
+static void
+report_all(
+       unsigned int            report_what,
+       unsigned long long      nr_records,
+       unsigned int            blocksize)
+{
+       struct btmap            *m;
+       int                     i;
+
+       for (i = 0, m = maps; i < ARRAY_SIZE(maps); i++, m++)
+               report(m->tag, report_what, nr_records, blocksize);
+}
+
 static int
 btheight_f(
        int             argc,
@@ -366,6 +379,13 @@ _("The smallest block size this command will consider is 128 bytes.\n"));
                return 0;
        }
 
+       for (i = optind; i < argc; i++) {
+               if (!strcmp(argv[i], "all")) {
+                       report_all(report_what, nr_records, blocksize);
+                       return 0;
+               }
+       }
+
        for (i = optind; i < argc; i++)
                report(argv[i], report_what, nr_records, blocksize);
 

diff --git a/man/man8/xfs_db.8 b/man/man8/xfs_db.8
index 587274957de39ee974eac69668b3afa0489cf32f..55ac3487fca62aa41beacb51d39680eb31db973e 100644 (file)
--- a/man/man8/xfs_db.8
+++ b/man/man8/xfs_db.8
@@ -420,6 +420,9 @@ The supported btree types are:
 .IR refcountbt ,
 and
 .IR rmapbt .
+The magic value
+.I all
+can be used to walk through all btree types.
 
 Options are as follows:
 .RS 1.0i