| From | Josh Poimboeuf <> | Subject | [PATCH v2 16/44] oprofile/x86: add regs->ip to oprofile trace | Date | Thu, 4 Aug 2016 17:22:12 -0500 |
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dump_trace() doesn't add the interrupted instruction's address to the trace, so add it manually.
Cc: Robert Richter <rric@kernel.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> --- arch/x86/oprofile/backtrace.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c index c594768..d950f9e 100644 --- a/arch/x86/oprofile/backtrace.c +++ b/arch/x86/oprofile/backtrace.c @@ -113,8 +113,14 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth) struct stack_frame *head = (struct stack_frame *)frame_pointer(regs); if (!user_mode(regs)) { - if (depth) - dump_trace(NULL, regs, NULL, 0, &backtrace_ops, &depth); + if (!depth) + return; + + oprofile_add_trace(regs->ip); + if (!--depth) + return; + + dump_trace(NULL, regs, NULL, 0, &backtrace_ops, &depth); return; } -- 2.7.4
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