[tip:perf/urgent] perf data: Document missing --force option

Commit-ID: ba7e851642f48002def3450b279598c187721fd0 Gitweb: https://git.kernel.org/tip/ba7e851642f48002def3450b279598c187721fd0 Author: Sangwon Hong AuthorDate: Mon, 5 Feb 2018 20:48:35 +0900 Committer: Arnaldo Carvalho de Melo CommitDate: Thu, 15 Feb 2018 09:57:33 -0300 perf data: Doc

[tip:perf/urgent] perf data: Document missing --force option

Commit-ID: a3a4bcaeba5cc981783529db0b8609c03c2db38f Gitweb: https://git.kernel.org/tip/a3a4bcaeba5cc981783529db0b8609c03c2db38f Author: Sangwon Hong AuthorDate: Mon, 5 Feb 2018 20:48:35 +0900 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 6 Feb 2018 10:11:52 -0300 perf data: Docu