linux-kernel - [PATCH] perf: makefile: add .DELETE_ON

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Date:   Sun, 18 Dec 2022 06:51:51 +0800
From:   Changbin Du <changbin.du@...il.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Changbin Du <changbin.du@...il.com>,
        Andrii Nakryiko <andrii.nakryiko@...il.com>
Subject: [PATCH] perf: makefile: add .DELETE_ON_ERROR special target

As kbuild, this adds .DELETE_ON_ERROR special target to clean up
partially updated files on error. A known issue is the empty vmlinux.h
generted by bpftool if it failed to dump btf info.

Signed-off-by: Changbin Du <changbin.du@...il.com>
Cc: Andrii Nakryiko <andrii.nakryiko@...il.com>
---
 tools/perf/Makefile.perf | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 9b7886ce0674..13e7d26e77f0 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -1151,3 +1151,6 @@ FORCE:
 .PHONY: archheaders
 
 endif # force_fixdep
+
+# Delete partially updated (corrupted) files on error
+.DELETE_ON_ERROR:
-- 
2.37.2