perf kwork: Fix memory management of kwork_work

This commit addresses several memory management issues in builtin-kwork.c:

1. Implements a global cleanup function perf_kwork__exit to free all
   kwork_work and kwork_atom_page objects at the end of the command.

2. Ensures all 'name' fields in struct kwork_work are malloc-ed (or NULL)
   and properly freed by using strdup and zfree.

3. Fixes memory leaks in top_merge_tasks where kwork_work objects were
   dropped without being freed.

4. Adds robustness with NULL checks for name fields.

5. Fixes workqueue_work_init to correctly resolve and strdup kernel
   function names, preventing bad-free errors.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

0 files changed, 0 insertions, 0 deletions