Merge tag 'drm/tegra/for-4.6-rc1' of http://anongit.freedesktop.org/git/tegra/linux...

[cascardo/linux.git] / tools / perf / util / probe-finder.c

diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 2be10fb..4ce5c5e 100644 (file)
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -686,8 +686,9 @@ static int call_probe_finder(Dwarf_Die *sc_die, struct probe_finder *pf)
                pf->fb_ops = NULL;
 #if _ELFUTILS_PREREQ(0, 142)
        } else if (nops == 1 && pf->fb_ops[0].atom == DW_OP_call_frame_cfa &&
-                  pf->cfi != NULL) {
-               if (dwarf_cfi_addrframe(pf->cfi, pf->addr, &frame) != 0 ||
+                  (pf->cfi_eh != NULL || pf->cfi_dbg != NULL)) {
+               if ((dwarf_cfi_addrframe(pf->cfi_eh, pf->addr, &frame) != 0 &&
+                    (dwarf_cfi_addrframe(pf->cfi_dbg, pf->addr, &frame) != 0)) ||
                    dwarf_frame_cfa(frame, &pf->fb_ops, &nops) != 0) {
                        pr_warning("Failed to get call frame on 0x%jx\n",
                                   (uintmax_t)pf->addr);
@@ -1015,8 +1016,7 @@ static int pubname_search_cb(Dwarf *dbg, Dwarf_Global *gl, void *data)
        return DWARF_CB_OK;
 }
 
-/* Find probe points from debuginfo */
-static int debuginfo__find_probes(struct debuginfo *dbg,
+static int debuginfo__find_probe_location(struct debuginfo *dbg,
                                  struct probe_finder *pf)
 {
        struct perf_probe_point *pp = &pf->pev->point;
@@ -1025,27 +1025,6 @@ static int debuginfo__find_probes(struct debuginfo *dbg,
        Dwarf_Die *diep;
        int ret = 0;
 
-#if _ELFUTILS_PREREQ(0, 142)
-       Elf *elf;
-       GElf_Ehdr ehdr;
-       GElf_Shdr shdr;
-
-       /* Get the call frame information from this dwarf */
-       elf = dwarf_getelf(dbg->dbg);
-       if (elf == NULL)
-               return -EINVAL;
-
-       if (gelf_getehdr(elf, &ehdr) == NULL)
-               return -EINVAL;
-
-       if (elf_section_by_name(elf, &ehdr, &shdr, ".eh_frame", NULL) &&
-           shdr.sh_type == SHT_PROGBITS) {
-               pf->cfi = dwarf_getcfi_elf(elf);
-       } else {
-               pf->cfi = dwarf_getcfi(dbg->dbg);
-       }
-#endif
-
        off = 0;
        pf->lcache = intlist__new(NULL);
        if (!pf->lcache)
@@ -1108,6 +1087,39 @@ found:
        return ret;
 }
 
+/* Find probe points from debuginfo */
+static int debuginfo__find_probes(struct debuginfo *dbg,
+                                 struct probe_finder *pf)
+{
+       int ret = 0;
+
+#if _ELFUTILS_PREREQ(0, 142)
+       Elf *elf;
+       GElf_Ehdr ehdr;
+       GElf_Shdr shdr;
+
+       if (pf->cfi_eh || pf->cfi_dbg)
+               return debuginfo__find_probe_location(dbg, pf);
+
+       /* Get the call frame information from this dwarf */
+       elf = dwarf_getelf(dbg->dbg);
+       if (elf == NULL)
+               return -EINVAL;
+
+       if (gelf_getehdr(elf, &ehdr) == NULL)
+               return -EINVAL;
+
+       if (elf_section_by_name(elf, &ehdr, &shdr, ".eh_frame", NULL) &&
+           shdr.sh_type == SHT_PROGBITS)
+               pf->cfi_eh = dwarf_getcfi_elf(elf);
+
+       pf->cfi_dbg = dwarf_getcfi(dbg->dbg);
+#endif
+
+       ret = debuginfo__find_probe_location(dbg, pf);
+       return ret;
+}
+
 struct local_vars_finder {
        struct probe_finder *pf;
        struct perf_probe_arg *args;