Commit-ID: 5df71b396b2d1fdd9d9f5a33e2eda5dc27c5632d Gitweb: http://git.kernel.org/tip/5df71b396b2d1fdd9d9f5a33e2eda5dc27c5632d Author: Denys Vlasenko <[email protected]> AuthorDate: Fri, 10 Apr 2015 15:06:57 +0200 Committer: Ingo Molnar <[email protected]> CommitDate: Sat, 11 Apr 2015 13:08:53 +0200
perf/x86/64: Do report user_regs->cx while we are in syscall, in get_regs_user() Yes, it is true that cx contains return address. It's not clear why we trash it. Stop doing that. Signed-off-by: Denys Vlasenko <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- arch/x86/kernel/perf_regs.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/x86/kernel/perf_regs.c b/arch/x86/kernel/perf_regs.c index 7ab198a..a8d4e48 100644 --- a/arch/x86/kernel/perf_regs.c +++ b/arch/x86/kernel/perf_regs.c @@ -177,8 +177,6 @@ void perf_get_regs_user(struct perf_regs *regs_user, * than just blindly copying user_regs. */ regs_user->abi = PERF_SAMPLE_REGS_ABI_64; - /* usually contains return address (same as ->ip) */ - regs_user_copy->cx = -1; } else { /* We're probably in an interrupt or exception. */ regs_user->abi = user_64bit_mode(user_regs) ? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
