tools/vm/slabinfo: put options in alphabetic order

Primarily the usage message lists options in alphabetic order however
there are a bunch of the options that are not in alphabetic order.

Put options in alphabetic order.

Link: http://lkml.kernel.org/r/20190212001219.27769-3-tobin@kernel.orgSigned-off-by: Tobin C. Harding <tobin@kernel.org>
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

tools/vm/slabinfo.c

@@ -113,6 +113,7 @@ static void usage(void)
 		"slabinfo [-aADefhilnosrStTvz1LXBU] [N=K] [-dafzput] [slab-regexp]\n"
 		"-a|--aliases           Show aliases\n"
 		"-A|--activity          Most active slabs first\n"
+		"-B|--Bytes             Show size in bytes\n"
 		"-d<options>|--debug=<options> Set/Clear Debug options\n"
 		"-D|--display-active    Switch line format to activity\n"
 		"-e|--empty             Show empty slabs\n"
@@ -120,21 +121,21 @@ static void usage(void)
 		"-h|--help              Show usage information\n"
 		"-i|--inverted          Inverted list\n"
 		"-l|--slabs             Show slabs\n"
+		"-L|--Loss              Sort by loss\n"
 		"-n|--numa              Show NUMA information\n"
+		"-N|--lines=K           Show the first K slabs\n"
 		"-o|--ops		Show kmem_cache_ops\n"
-		"-s|--shrink            Shrink slabs\n"
 		"-r|--report		Detailed report on single slabs\n"
+		"-s|--shrink            Shrink slabs\n"
 		"-S|--Size              Sort by size\n"
 		"-t|--tracking          Show alloc/free information\n"
 		"-T|--Totals            Show summary information\n"
+		"-U|--Unreclaim		Show unreclaimable slabs only\n"
 		"-v|--validate          Validate slabs\n"
 		"-z|--zero              Include empty slabs\n"
 		"-1|--1ref              Single reference\n"
-		"-N|--lines=K           Show the first K slabs\n"
-		"-L|--Loss              Sort by loss\n"
 		"-X|--Xtotals           Show extended summary information\n"
-		"-B|--Bytes             Show size in bytes\n"
-		"-U|--Unreclaim		Show unreclaimable slabs only\n"
+
 		"\nValid debug options (FZPUT may be combined)\n"
 		"a / A          Switch on all debug options (=FZUP)\n"
 		"-              Switch off all debug options\n"