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perf thread: Introduce thread__find_symbol()

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Out of thread__find_addr_location(..., MAP__FUNCTION, ...), idea here is to
continue removing references to MAP__{FUNCTION,VARIABLE} ahead of
getting both types of symbols in the same rbtree, as various places do
two lookups, looking first at MAP__FUNCTION, then at MAP__VARIABLE.

So thread__find_symbol() will eventually do just that, and 'struct
symbol' will have the symbol type, for code that cares about that.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-n7528en9e08yd3flzmb26tth@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2018-04-24 11:24:49 -03:00
parent ea40b6d322
commit 4546263d72
9 changed files with 26 additions and 27 deletions
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7
tools/perf/util/machine.c
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@@ -1681,14 +1681,14 @@ static void ip__resolve_data(struct thread *thread,
memset(&al, 0, sizeof(al));
thread__find_addr_location(thread, m, MAP__VARIABLE, addr, &al);
__thread__find_symbol(thread, m, MAP__VARIABLE, addr, &al);
if (al.map == NULL) {
/*
* some shared data regions have execute bit set which puts
* their mapping in the MAP__FUNCTION type array.
* Check there as a fallback option before dropping the sample.
*/
thread__find_addr_location(thread, m, MAP__FUNCTION, addr, &al);
thread__find_symbol(thread, m, addr, &al);
}
ams->addr = addr;
@@ -1784,8 +1784,7 @@ static int add_callchain_ip(struct thread *thread,
}
return 0;
}
thread__find_addr_location(thread, *cpumode, MAP__FUNCTION,
ip, &al);
thread__find_symbol(thread, *cpumode, ip, &al);
}
if (al.sym != NULL) {