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perf namespaces: Add 'in_pidns' to nsinfo struct

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Provides an accurate mean to determine if the owner thread is in a
different PID namespace.

Signed-off-by: Yonatan Goldschmidt <yonatan.goldschmidt@granulate.io>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20201105015418.1725218-1-yonatan.goldschmidt@granulate.io
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Yonatan Goldschmidt
2020-11-05 03:54:18 +02:00
committed by Arnaldo Carvalho de Melo
parent 473f742e18
commit 2b51c71be5
2 changed files with 10 additions and 2 deletions
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tools/perf/util/namespaces.h
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@@ -33,6 +33,7 @@ struct nsinfo {
pid_t tgid;
pid_t nstgid;
bool need_setns;
bool in_pidns;
char *mntns_path;
refcount_t refcnt;
};