From: "Tobin C. Harding" <tobin@xxxxxxxxxx> Subject: tools/vm/slabinfo: add sorting info to help menu Passing more than one sorting option has undefined behaviour. Add an explicit statement as such to the help menu, this also has the advantage of highlighting all the sorting options. Link: http://lkml.kernel.org/r/20190426022622.4089-5-tobin@xxxxxxxxxx Signed-off-by: Tobin C. Harding <tobin@xxxxxxxxxx> Cc: Alexander Duyck <alexander.duyck@xxxxxxxxx> Cc: Brendan Gregg <brendan.d.gregg@xxxxxxxxx>, Cc: Christoph Lameter <cl@xxxxxxxxx> Cc: David Rientjes <rientjes@xxxxxxxxxx> Cc: Jesper Dangaard Brouer <brouer@xxxxxxxxxx> Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxxxxx> Cc: Pekka Enberg <penberg@xxxxxx> Cc: Qian Cai <cai@xxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: Vlastimil Babka <vbabka@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- tools/vm/slabinfo.c | 2 ++ 1 file changed, 2 insertions(+) --- a/tools/vm/slabinfo.c~tools-vm-slabinfo-add-sorting-info-to-help-menu +++ a/tools/vm/slabinfo.c @@ -148,6 +148,8 @@ static void usage(void) " p | P Poisoning\n" " u | U Tracking\n" " t | T Tracing\n" + + "\nSorting options (--Loss, --Size, --Partial) are mutually exclusive\n" ); } _
