From: Arnaldo Carvalho de Melo <a...@redhat.com>

In the TUI the 's' hotkey can be used to switch to another perf.data
file in the current directory, but that got broken in Fixes:
b01141f4f59c ("perf annotate: Initialize the priv are in symbol__new()"),
that would show this once another file was chosen:

    ┌─Fatal Error─────────────────────────────────────┐
    │Annotation needs to be init before symbol__init()│
    │                                                 │
    │                                                 │
    │Press any key...                                 │
    └─────────────────────────────────────────────────┘

Fix it by just silently bailing out if symbol__annotation_init() was already
called, just like is done with symbol__init(), i.e. they are done just once at
session start, not when switching to a new perf.data file.

Cc: Adrian Hunter <adrian.hun...@intel.com>
Cc: Andi Kleen <a...@linux.intel.com>
Cc: David Ahern <dsah...@gmail.com>
Cc: Jin Yao <yao....@linux.intel.com>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Martin Liška <mli...@suse.cz>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Ravi Bangoria <ravi.bango...@linux.vnet.ibm.com>
Cc: Thomas Richter <tmri...@linux.vnet.ibm.com>
Cc: Wang Nan <wangn...@huawei.com>
Fixes: b01141f4f59c ("perf annotate: Initialize the priv are in symbol__new()")
Link: https://lkml.kernel.org/n/tip-ogppdtpzfax7y1h6gjdv5...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
 tools/perf/util/symbol.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 62b2dd2253eb..1466814ebada 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -2091,16 +2091,14 @@ static bool symbol__read_kptr_restrict(void)
 
 int symbol__annotation_init(void)
 {
+       if (symbol_conf.init_annotation)
+               return 0;
+
        if (symbol_conf.initialized) {
                pr_err("Annotation needs to be init before symbol__init()\n");
                return -1;
        }
 
-       if (symbol_conf.init_annotation) {
-               pr_warning("Annotation being initialized multiple times\n");
-               return 0;
-       }
-
        symbol_conf.priv_size += sizeof(struct annotation);
        symbol_conf.init_annotation = true;
        return 0;
-- 
2.14.3

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