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| author |   David S. Miller <davem@davemloft.net> | 2018-10-29 22:17:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-29 22:17:12 -0700 |
| commit | 0f0a691f1ef9af0f8943f601b325a219d1ba8184 (patch) | |
| tree | 8db638a361be1b64255cf2b7fc7ced47e52683a6 /arch/sparc | |
| parent | Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc (diff) | |
| download | linux-dev-0f0a691f1ef9af0f8943f601b325a219d1ba8184.tar.xz linux-dev-0f0a691f1ef9af0f8943f601b325a219d1ba8184.zip | |
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>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/kernel/perf_event.c | 5 |
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; } |