Commits
David S. Miller committed 0f0a691f1ef
sparc64: Remvoe set_fs() from perf_callchain_user().
Ever since commit 88b0193d9418 ("perf/callchain: Force USER_DS when
invoking perf_callchain_user()") the caller does this for us.
Signed-off-by: David S. Miller <davem@davemloft.net>