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perf cgroup: Introduce find_cgroup() method
To break down complexity in add_cgroup(). 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: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-5yqshcf5hm837n7c86u7lhjf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -90,11 +90,10 @@ static int open_cgroup(char *name)
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return fd;
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}
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static int add_cgroup(struct perf_evlist *evlist, char *str)
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static struct cgroup *evlist__find_cgroup(struct perf_evlist *evlist, char *str)
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{
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struct perf_evsel *counter;
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struct cgroup *cgrp = NULL;
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int n;
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/*
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* check if cgrp is already defined, if so we reuse it
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*/
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@ -107,6 +106,15 @@ static int add_cgroup(struct perf_evlist *evlist, char *str)
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}
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}
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return cgrp;
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}
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static int add_cgroup(struct perf_evlist *evlist, char *str)
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{
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struct perf_evsel *counter;
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struct cgroup *cgrp = evlist__find_cgroup(evlist, str);
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int n;
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if (!cgrp) {
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cgrp = zalloc(sizeof(*cgrp));
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if (!cgrp)
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