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The stack has been created for storing func and dso from the callchain. The sample has been added to a specific thread. It first checks if the thread exists in the Thread class. Then it call _add_sample function which is responsible for appending a new entry to the samples list. Also callchain parsing and storing part is implemented. Moreover removed the comment from thread. Signed-off-by: Anup Sharma <anupnewsmail@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/5a112be85ccdcdcd611e343f6a7a7482d01f6299.1689961706.git.anupnewsmail@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>