On Donnerstag, 18. Mai 2017 11:48:20 CEST Namhyung Kim wrote:
> On Thu, May 18, 2017 at 10:37:59AM +0200, Milian Wolff wrote:
> > So far, the inlined nodes where only reversed when we built perf
> > against libbfd. If that was not available, the addr2line fallback
> > code path was missing the inline_list__reverse call.
> > 
> > Now we always add the nodes in the correct order within
> > inline_list__append. This removes the need to reverse the list
> > and also ensures that all callers construct the list in the right
> > order.
> > 
> > Cc: Arnaldo Carvalho de Melo <[email protected]>
> > Cc: David Ahern <[email protected]>
> > Cc: Namhyung Kim <[email protected]>
> > Cc: Peter Zijlstra <[email protected]>
> > Cc: Yao Jin <[email protected]>
> > Signed-off-by: Milian Wolff <[email protected]>
> > ---
> > 
> >  tools/perf/util/srcline.c | 23 ++++++++---------------
> >  1 file changed, 8 insertions(+), 15 deletions(-)
> > 
> > v2:
> > - directly create list in correct order as suggested by Namhyung
> > 
> > diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
> > index 5e376d64d59e..bbba9c69cfec 100644
> > --- a/tools/perf/util/srcline.c
> > +++ b/tools/perf/util/srcline.c
> > @@ -56,7 +56,10 @@ static int inline_list__append(char *filename, char
> > *funcname, int line_nr,> 
> >             }
> >     
> >     }
> > 
> > -   list_add_tail(&ilist->list, &node->val);
> > +   if (callchain_param.order == ORDER_CALLEE)
> > +           list_add_tail(&ilist->list, &node->val);
> > +   else
> > +           list_add(&ilist->list, &node->val);
> > 
> >     return 0;
> >  
> >  }
> > 
> > @@ -200,14 +203,6 @@ static void addr2line_cleanup(struct a2l_data *a2l)
> > 
> >  #define MAX_INLINE_NEST 1024
> > 
> > -static void inline_list__reverse(struct inline_node *node)
> > -{
> > -   struct inline_list *ilist, *n;
> > -
> > -   list_for_each_entry_safe_reverse(ilist, n, &node->val, list)
> > -           list_move_tail(&ilist->list, &node->val);
> > -}
> > -
> > 
> >  static int addr2line(const char *dso_name, u64 addr,
> >  
> >                  char **file, unsigned int *line, struct dso *dso,
> >                  bool unwind_inlines, struct inline_node *node)
> > 
> > @@ -250,11 +245,6 @@ static int addr2line(const char *dso_name, u64 addr,
> > 
> >                             ret = 1;
> >                     
> >                     }
> >             
> >             }
> > 
> > -
> > -           if ((node != NULL) &&
> > -               (callchain_param.order != ORDER_CALLEE)) {
> > -                   inline_list__reverse(node);
> > -           }
> > 
> >     }
> >     
> >     if (file) {
> > 
> > @@ -497,12 +487,15 @@ char *get_srcline(struct dso *dso, u64 addr, struct
> > symbol *sym,> 
> >  struct inline_node *dso__parse_addr_inlines(struct dso *dso, u64 addr)
> >  {
> >  
> >     const char *dso_name;
> > 
> > +   struct inline_node *node;
> > 
> >     dso_name = dso__name(dso);
> >     if (dso_name == NULL)
> >     
> >             return NULL;
> > 
> > -   return addr2inlines(dso_name, addr, dso);
> > +   node = addr2inlines(dso_name, addr, dso);
> > +
> > +   return node;
> 
> Looks like an unnecessary change.

Yes, true. Will clean up and send v3.

Cheers

-- 
Milian Wolff | [email protected] | Software Engineer
KDAB (Deutschland) GmbH&Co KG, a KDAB Group company
Tel: +49-30-521325470
KDAB - The Qt Experts

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