linux-kernel - [PATCH v6 1/4] perf python: Prefer python3

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Date:   Sun, 26 Jun 2022 19:57:41 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        John Garry <john.garry@...wei.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        Felix Fietkau <nbd@....name>, Qi Liu <liuqi115@...wei.com>,
        Like Xu <likexu@...cent.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org,
        Nick Forrington <nick.forrington@....com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        James Clark <james.clark@....com>,
        Andrew Kilroy <andrew.kilroy@....com>,
        "Paul A . Clarke" <pc@...ibm.com>, Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        ananth.narayan@....com, ravi.bangoria@....com,
        santosh.shukla@....com, sandipan.das@....com,
        Caleb Biggers <caleb.biggers@...el.com>,
        Perry Taylor <perry.taylor@...el.com>,
        Kshipra Bopardikar <kshipra.bopardikar@...el.com>
Cc:     Stephane Eranian <eranian@...gle.com>,
        Ian Rogers <rogers.email@...il.com>,
        Ian Rogers <irogers@...gle.com>,
        Thomas Richter <tmricht@...ux.ibm.com>
Subject: [PATCH v6 1/4] perf python: Prefer python3

From: Ian Rogers <rogers.email@...il.com>

The PYTHON_AUTO code orders the preference for the PYTHON command to
be python3, python and then python2. python3 makes a more logical
preference as python2 is no longer supported:
https://www.python.org/doc/sunset-python-2/

Reorder the priority of the PYTHON command to be python2, python and
then python3.

Reported-by: John Garry <john.garry@...wei.com>
Signed-off-by: Ian Rogers <irogers@...gle.com>
Tested-by: Zhengjun Xing <zhengjun.xing@...ux.intel.com>
Tested-by: Thomas Richter <tmricht@...ux.ibm.com>
---
 tools/perf/Makefile.config | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 73e0762092fe..16c1a87444b8 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -241,15 +241,15 @@ endif
 # Try different combinations to accommodate systems that only have
 # python[2][3]-config in weird combinations in the following order of
 # priority from lowest to highest:
-#   * python3-config
-#   * python-config
 #   * python2-config as per pep-0394.
+#   * python-config
+#   * python3-config
 #   * $(PYTHON)-config (If PYTHON is user supplied but PYTHON_CONFIG isn't)
 #
 PYTHON_AUTO := python-config
-PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))
-PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
 PYTHON_AUTO := $(if $(call get-executable,python2-config),python2-config,$(PYTHON_AUTO))
+PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
+PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))
 
 # If PYTHON is defined but PYTHON_CONFIG isn't, then take $(PYTHON)-config as if it was the user
 # supplied value for PYTHON_CONFIG. Because it's "user supplied", error out if it doesn't exist.
-- 
2.37.0.rc0.161.g10f37bed90-goog