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Message-Id: <20220804221816.1802790-2-irogers@google.com>
Date:   Thu,  4 Aug 2022 15:18:00 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     John Garry <john.garry@...wei.com>, Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        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>,
        Andi Kleen <ak@...ux.intel.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        Ravi Bangoria <ravi.bangoria@....com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org
Cc:     Stephane Eranian <eranian@...gle.com>,
        Ian Rogers <irogers@...gle.com>
Subject: [PATCH v4 01/17] perf jevents: Clean up pytype warnings

Improve type hints to clean up pytype warnings.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/pmu-events/jevents.py | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
index 83e0dcbeac9a..5b72048d50da 100755
--- a/tools/perf/pmu-events/jevents.py
+++ b/tools/perf/pmu-events/jevents.py
@@ -6,8 +6,7 @@ import csv
 import json
 import os
 import sys
-from typing import Callable
-from typing import Sequence
+from typing import (Callable, Optional, Sequence)
 
 # Global command line arguments.
 _args = None
@@ -57,7 +56,7 @@ class JsonEvent:
                                        '. '), '.').replace('\n', '\\n').replace(
                                            '\"', '\\"').replace('\r', '\\r')
 
-    def convert_aggr_mode(aggr_mode: str) -> str:
+    def convert_aggr_mode(aggr_mode: str) -> Optional[str]:
       """Returns the aggr_mode_class enum value associated with the JSON string."""
       if not aggr_mode:
         return None
@@ -67,7 +66,7 @@ class JsonEvent:
       }
       return aggr_mode_to_enum[aggr_mode]
 
-    def lookup_msr(num: str) -> str:
+    def lookup_msr(num: str) -> Optional[str]:
       """Converts the msr number, or first in a list to the appropriate event field."""
       if not num:
         return None
@@ -79,7 +78,7 @@ class JsonEvent:
       }
       return msrmap[int(num.split(',', 1)[0], 0)]
 
-    def real_event(name: str, event: str) -> str:
+    def real_event(name: str, event: str) -> Optional[str]:
       """Convert well known event names to an event string otherwise use the event argument."""
       fixed = {
           'inst_retired.any': 'event=0xc0,period=2000003',
@@ -95,7 +94,7 @@ class JsonEvent:
         return fixed[name.lower()]
       return event
 
-    def unit_to_pmu(unit: str) -> str:
+    def unit_to_pmu(unit: str) -> Optional[str]:
       """Convert a JSON Unit to Linux PMU name."""
       if not unit:
         return None
@@ -154,7 +153,7 @@ class JsonEvent:
     if self.metric_expr:
       self.metric_expr = self.metric_expr.replace('\\', '\\\\')
     arch_std = jd.get('ArchStdEvent')
-    if precise and self.desc and not '(Precise Event)' in self.desc:
+    if precise and self.desc and '(Precise Event)' not in self.desc:
       extra_desc += ' (Must be precise)' if precise == '2' else (' (Precise '
                                                                  'event)')
     event = f'config={llx(configcode)}' if configcode is not None else f'event={llx(eventcode)}'
-- 
2.37.1.559.g78731f0fdb-goog

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