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perf map: Move comparision of map's dso_id to a separate function
We'll use it when doing DSO lookups using dso_ids. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-u2nr1oq03o0i29w2ay9jx03s@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -2,6 +2,7 @@
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#include "debug.h"
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#include "dsos.h"
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#include "dso.h"
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#include "map.h"
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#include "vdso.h"
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#include "namespaces.h"
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#include <libgen.h>
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@ -9,6 +10,30 @@
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#include <string.h>
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#include <symbol.h> // filename__read_build_id
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int dso_id__cmp(struct dso_id *a, struct dso_id *b)
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{
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/*
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* The second is always dso->id, so zeroes if not set, assume passing
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* NULL for a means a zeroed id
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*/
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if (a == NULL)
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return 0;
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if (a->maj > b->maj) return -1;
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if (a->maj < b->maj) return 1;
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if (a->min > b->min) return -1;
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if (a->min < b->min) return 1;
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if (a->ino > b->ino) return -1;
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if (a->ino < b->ino) return 1;
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if (a->ino_generation > b->ino_generation) return -1;
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if (a->ino_generation < b->ino_generation) return 1;
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return 0;
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}
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bool __dsos__read_build_ids(struct list_head *head, bool with_hits)
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{
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bool have_build_id = false;
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@ -28,6 +28,8 @@ struct dso_id {
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u64 ino_generation;
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};
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int dso_id__cmp(struct dso_id *a, struct dso_id *b);
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struct map {
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union {
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struct rb_node rb_node;
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@ -1194,6 +1194,7 @@ sort__dcacheline_cmp(struct hist_entry *left, struct hist_entry *right)
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{
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u64 l, r;
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struct map *l_map, *r_map;
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int rc;
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if (!left->mem_info) return -1;
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if (!right->mem_info) return 1;
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@ -1212,18 +1213,9 @@ sort__dcacheline_cmp(struct hist_entry *left, struct hist_entry *right)
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if (!l_map) return -1;
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if (!r_map) return 1;
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if (l_map->dso_id.maj > r_map->dso_id.maj) return -1;
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if (l_map->dso_id.maj < r_map->dso_id.maj) return 1;
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if (l_map->dso_id.min > r_map->dso_id.min) return -1;
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if (l_map->dso_id.min < r_map->dso_id.min) return 1;
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if (l_map->dso_id.ino > r_map->dso_id.ino) return -1;
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if (l_map->dso_id.ino < r_map->dso_id.ino) return 1;
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if (l_map->dso_id.ino_generation > r_map->dso_id.ino_generation) return -1;
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if (l_map->dso_id.ino_generation < r_map->dso_id.ino_generation) return 1;
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rc = dso_id__cmp(&l_map->dso_id, &r_map->dso_id);
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if (rc)
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return rc;
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/*
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* Addresses with no major/minor numbers are assumed to be
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* anonymous in userspace. Sort those on pid then address.
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