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>

1 files changed, 0 insertions, 5 deletions

diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 67b3e6b3ce5d..47c871394ccb 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -1849,16 +1849,12 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs
 {
         u64 saved_fault_address = current_thread_info()->fault_address;
         u8 saved_fault_code = get_thread_fault_code();
-        mm_segment_t old_fs;
 
         perf_callchain_store(entry, regs->tpc);
 
         if (!current->mm)
                 return;
 
-        old_fs = get_fs();
-        set_fs(USER_DS);
-
         flushw_user();
 
         pagefault_disable();
@@ -1870,7 +1866,6 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs
 
         pagefault_enable();
 
-        set_fs(old_fs);
         set_thread_fault_code(saved_fault_code);
         current_thread_info()->fault_address = saved_fault_address;
 }