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| author |  Arnaldo Carvalho de Melo <acme@redhat.com>
| 2023-04-17 18:28:01 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com>
| 2023-04-17 18:47:55 -0300 |
| commit | 7031edac9dbc0f880c9fbaa40ca08b5de34239c6 (patch) | |
| tree | 41c376c2a746d69ac2fa143d35bc95c3163ef8e2 /tools/perf/util/dso.c | |
| parent | perf cpumap: Add reference count checking (diff) | |
| download | linux-7031edac9dbc0f880c9fbaa40ca08b5de34239c6.tar.gz linux-7031edac9dbc0f880c9fbaa40ca08b5de34239c6.tar.bz2 linux-7031edac9dbc0f880c9fbaa40ca08b5de34239c6.zip | |
perf dso: Add dso__filename_with_chroot() to reduce number of accesses to dso->nsinfo members
We'll need to reference count dso->nsinfo, so reduce the number of
direct accesses by having a shorter form of obtaining a filename with
a chroot (namespace one).
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Link: https://lore.kernel.org/lkml/ZD26ZlqSbgSyH5lX@kernel.org
[ Used nsinfo__pid(dso->nsinfo), as it was already present ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/dso.c')
| -rw-r--r-- | tools/perf/util/dso.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index e36b418df2c6..a86614599269 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -491,6 +491,11 @@ static int do_open(char *name) return -1; } +char *dso__filename_with_chroot(const struct dso *dso, const char *filename) +{ + return filename_with_chroot(nsinfo__pid(dso->nsinfo), filename); +} + static int __open_dso(struct dso *dso, struct machine *machine) { int fd = -EINVAL; @@ -515,7 +520,7 @@ static int __open_dso(struct dso *dso, struct machine *machine) if (errno != ENOENT || dso->nsinfo == NULL) goto out; - new_name = filename_with_chroot(dso->nsinfo->pid, name); + new_name = dso__filename_with_chroot(dso, name); if (!new_name) goto out; |