perf tools: Fix accidentally preprocessed snprintf callback

struct sort_entry has a callback named snprintf that turns an
entry into a string result.
But there are glibc versions that implement snprintf through a
macro. The following expression is then going to get the snprintf
call preprocessed:

        ent->snprintf(...)

to finally end up in a build error:

        util/hist.c: Dans la fonction «hist_entry__snprintf» :
        util/hist.c:539: erreur: «struct sort_entry» has no member named «__builtin___snprintf_chk»

To fix this, prepend struct sort_entry callbacks with an "se_"
prefix.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 18cf8b3..9c2b874 100644 (file)
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -68,7 +68,7 @@ hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
        int64_t cmp = 0;
 
        list_for_each_entry(se, &hist_entry__sort_list, list) {
-               cmp = se->cmp(left, right);
+               cmp = se->se_cmp(left, right);
                if (cmp)
                        break;
        }
@@ -85,7 +85,7 @@ hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
        list_for_each_entry(se, &hist_entry__sort_list, list) {
                int64_t (*f)(struct hist_entry *, struct hist_entry *);
 
-               f = se->collapse ?: se->cmp;
+               f = se->se_collapse ?: se->se_cmp;
 
                cmp = f(left, right);
                if (cmp)
@@ -536,8 +536,8 @@ int hist_entry__snprintf(struct hist_entry *self,
                        continue;
 
                ret += snprintf(s + ret, size - ret, "%s", sep ?: "  ");
-               ret += se->snprintf(self, s + ret, size - ret,
-                                   se->width ? *se->width : 0);
+               ret += se->se_snprintf(self, s + ret, size - ret,
+                                      se->se_width ? *se->se_width : 0);
        }
 
        return ret;
@@ -564,7 +564,7 @@ static size_t hist_entry__fprintf_callchain(struct hist_entry *self, FILE *fp,
        if (sort__first_dimension == SORT_COMM) {
                struct sort_entry *se = list_first_entry(&hist_entry__sort_list,
                                                         typeof(*se), list);
-               left_margin = se->width ? *se->width : 0;
+               left_margin = se->se_width ? *se->se_width : 0;
                left_margin -= thread__comm_len(self->thread);
        }
 
@@ -615,22 +615,22 @@ size_t perf_session__fprintf_hists(struct rb_root *hists,
                if (se->elide)
                        continue;
                if (sep) {
-                       fprintf(fp, "%c%s", *sep, se->header);
+                       fprintf(fp, "%c%s", *sep, se->se_header);
                        continue;
                }
-               width = strlen(se->header);
-               if (se->width) {
+               width = strlen(se->se_header);
+               if (se->se_width) {
                        if (symbol_conf.col_width_list_str) {
                                if (col_width) {
-                                       *se->width = atoi(col_width);
+                                       *se->se_width = atoi(col_width);
                                        col_width = strchr(col_width, ',');
                                        if (col_width)
                                                ++col_width;
                                }
                        }
-                       width = *se->width = max(*se->width, width);
+                       width = *se->se_width = max(*se->se_width, width);
                }
-               fprintf(fp, "  %*s", width, se->header);
+               fprintf(fp, "  %*s", width, se->se_header);
        }
        fprintf(fp, "\n");
 
@@ -652,10 +652,10 @@ size_t perf_session__fprintf_hists(struct rb_root *hists,
                        continue;
 
                fprintf(fp, "  ");
-               if (se->width)
-                       width = *se->width;
+               if (se->se_width)
+                       width = *se->se_width;
                else
-                       width = strlen(se->header);
+                       width = strlen(se->se_header);
                for (i = 0; i < width; i++)
                        fprintf(fp, ".");
        }

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 9d24d4b..da30b30 100644 (file)
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -30,38 +30,38 @@ static int hist_entry__parent_snprintf(struct hist_entry *self, char *bf,
                                       size_t size, unsigned int width);
 
 struct sort_entry sort_thread = {
-       .header = "Command:  Pid",
-       .cmp    = sort__thread_cmp,
-       .snprintf = hist_entry__thread_snprintf,
-       .width  = &threads__col_width,
+       .se_header      = "Command:  Pid",
+       .se_cmp         = sort__thread_cmp,
+       .se_snprintf    = hist_entry__thread_snprintf,
+       .se_width       = &threads__col_width,
 };
 
 struct sort_entry sort_comm = {
-       .header         = "Command",
-       .cmp            = sort__comm_cmp,
-       .collapse       = sort__comm_collapse,
-       .snprintf       = hist_entry__comm_snprintf,
-       .width          = &comms__col_width,
+       .se_header      = "Command",
+       .se_cmp         = sort__comm_cmp,
+       .se_collapse    = sort__comm_collapse,
+       .se_snprintf    = hist_entry__comm_snprintf,
+       .se_width       = &comms__col_width,
 };
 
 struct sort_entry sort_dso = {
-       .header = "Shared Object",
-       .cmp    = sort__dso_cmp,
-       .snprintf = hist_entry__dso_snprintf,
-       .width  = &dsos__col_width,
+       .se_header      = "Shared Object",
+       .se_cmp         = sort__dso_cmp,
+       .se_snprintf    = hist_entry__dso_snprintf,
+       .se_width       = &dsos__col_width,
 };
 
 struct sort_entry sort_sym = {
-       .header = "Symbol",
-       .cmp    = sort__sym_cmp,
-       .snprintf = hist_entry__sym_snprintf,
+       .se_header      = "Symbol",
+       .se_cmp         = sort__sym_cmp,
+       .se_snprintf    = hist_entry__sym_snprintf,
 };
 
 struct sort_entry sort_parent = {
-       .header = "Parent symbol",
-       .cmp    = sort__parent_cmp,
-       .snprintf = hist_entry__parent_snprintf,
-       .width  = &parent_symbol__col_width,
+       .se_header      = "Parent symbol",
+       .se_cmp         = sort__parent_cmp,
+       .se_snprintf    = hist_entry__parent_snprintf,
+       .se_width       = &parent_symbol__col_width,
 };
 
 struct sort_dimension {
@@ -255,7 +255,7 @@ int sort_dimension__add(const char *tok)
                if (strncasecmp(tok, sd->name, strlen(tok)))
                        continue;
 
-               if (sd->entry->collapse)
+               if (sd->entry->se_collapse)
                        sort__need_collapse = 1;
 
                if (sd->entry == &sort_parent) {

diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 6d7b4be..1d857aa 100644 (file)
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -78,13 +78,13 @@ enum sort_type {
 struct sort_entry {
        struct list_head list;
 
-       const char *header;
+       const char *se_header;
 
-       int64_t (*cmp)(struct hist_entry *, struct hist_entry *);
-       int64_t (*collapse)(struct hist_entry *, struct hist_entry *);
-       int     (*snprintf)(struct hist_entry *self, char *bf, size_t size,
-                           unsigned int width);
-       unsigned int *width;
+       int64_t (*se_cmp)(struct hist_entry *, struct hist_entry *);
+       int64_t (*se_collapse)(struct hist_entry *, struct hist_entry *);
+       int     (*se_snprintf)(struct hist_entry *self, char *bf, size_t size,
+                              unsigned int width);
+       unsigned int *se_width;
        bool    elide;
 };