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arch

perf/x86/64: Do not guess user_regs->cs, ss, sp in get_regs_user()

Denys Vlasenko authored Apr 10, 2015 and Ingo Molnar committed Apr 11, 2015

After recent changes to syscall entry points,
user_regs->{cs,ss,sp} are always correct. (They used to be
undefined while in syscalls).

We can report them reliably, without guessing.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1428671219-29341-1-git-send-email-dvlasenk@redhat.com

Signed-off-by: Ingo Molnar <mingo@kernel.org>

aa21df04

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aa21df04 Apr 10, 2015

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