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Subject[PATCH 03/23] perf symbols: Convert symbol__is_idle() to use strlist
Date
From: Kim Phillips <kim.phillips@amd.com>

Use the more optimized strlist implementation to do the idle function
lookup.

Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Acked-by: Song Liu <songliubraving@fb.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200210163147.25358-1-kim.phillips@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/symbol.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index f3120c4f47ad..1077013d8ce2 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -654,13 +654,17 @@ static bool symbol__is_idle(const char *name)
NULL
};
int i;
+ static struct strlist *idle_symbols_list;

- for (i = 0; idle_symbols[i]; i++) {
- if (!strcmp(idle_symbols[i], name))
- return true;
- }
+ if (idle_symbols_list)
+ return strlist__has_entry(idle_symbols_list, name);

- return false;
+ idle_symbols_list = strlist__new(NULL, NULL);
+
+ for (i = 0; idle_symbols[i]; i++)
+ strlist__add(idle_symbols_list, idle_symbols[i]);
+
+ return strlist__has_entry(idle_symbols_list, name);
}

static int map__process_kallsym_symbol(void *arg, const char *name,
--
2.21.1
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