On Tue, Oct 15, 2019 at 11:14:01AM +0200, Jiri Olsa wrote: > On Tue, Oct 15, 2019 at 10:53:57AM +0800, Jin Yao wrote: > > There are some deprecated events listed by perf list. But we can't remove > > them from perf list with ease because some old scripts may use them. > > > > Deprecated events are old names of renamed events. When an event gets > > renamed the old name is kept around for some time and marked with > > Deprecated. The newer Intel event lists in the tree already have these > > headers. > > > > So we need to keep them in the event list, but provide a new option to > > show them. The new option is "--deprecated". > > > > With this patch, the deprecated events are hidden by default but they can > > be displayed when option "--deprecated" is enabled. > > not sure it's wise to hide them, because people will not read man page > to find --deprecated option, they will rather complain right away ;-)
perf list will have the same event with a different name. If someone is using perf list presumably they don't know the event name, and look at the description, and the description is still there, just with a new name. Old scripts of course still work because -e looks up deprecated events too. -Andi
