These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / tools / perf / util / unwind-libunwind.c

diff --git a/kernel/tools/perf/util/unwind-libunwind.c b/kernel/tools/perf/util/unwind-libunwind.c
index 7b09a44..c83832b 100644 (file)
--- a/kernel/tools/perf/util/unwind-libunwind.c
+++ b/kernel/tools/perf/util/unwind-libunwind.c
@@ -269,13 +269,14 @@ static int read_unwind_spec_eh_frame(struct dso *dso, struct machine *machine,
        u64 offset = dso->data.eh_frame_hdr_offset;
 
        if (offset == 0) {
-               fd = dso__data_fd(dso, machine);
+               fd = dso__data_get_fd(dso, machine);
                if (fd < 0)
                        return -EINVAL;
 
                /* Check the .eh_frame section for unwinding info */
                offset = elf_section_offset(fd, ".eh_frame_hdr");
                dso->data.eh_frame_hdr_offset = offset;
+               dso__data_put_fd(dso);
        }
 
        if (offset)
@@ -294,13 +295,14 @@ static int read_unwind_spec_debug_frame(struct dso *dso,
        u64 ofs = dso->data.debug_frame_offset;
 
        if (ofs == 0) {
-               fd = dso__data_fd(dso, machine);
+               fd = dso__data_get_fd(dso, machine);
                if (fd < 0)
                        return -EINVAL;
 
                /* Check the .debug_frame section for unwinding info */
                ofs = elf_section_offset(fd, ".debug_frame");
                dso->data.debug_frame_offset = ofs;
+               dso__data_put_fd(dso);
        }
 
        *offset = ofs;
@@ -328,6 +330,7 @@ find_proc_info(unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
        struct map *map;
        unw_dyn_info_t di;
        u64 table_data, segbase, fde_count;
+       int ret = -EINVAL;
 
        map = find_map(ip, ui);
        if (!map || !map->dso)
@@ -346,26 +349,33 @@ find_proc_info(unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
                di.u.rti.table_data = map->start + table_data;
                di.u.rti.table_len  = fde_count * sizeof(struct table_entry)
                                      / sizeof(unw_word_t);
-               return dwarf_search_unwind_table(as, ip, &di, pi,
-                                                need_unwind_info, arg);
+               ret = dwarf_search_unwind_table(as, ip, &di, pi,
+                                               need_unwind_info, arg);
        }
 
 #ifndef NO_LIBUNWIND_DEBUG_FRAME
        /* Check the .debug_frame section for unwinding info */
-       if (!read_unwind_spec_debug_frame(map->dso, ui->machine, &segbase)) {
-               int fd = dso__data_fd(map->dso, ui->machine);
+       if (ret < 0 &&
+           !read_unwind_spec_debug_frame(map->dso, ui->machine, &segbase)) {
+               int fd = dso__data_get_fd(map->dso, ui->machine);
                int is_exec = elf_is_exec(fd, map->dso->name);
                unw_word_t base = is_exec ? 0 : map->start;
+               const char *symfile;
+
+               if (fd >= 0)
+                       dso__data_put_fd(map->dso);
+
+               symfile = map->dso->symsrc_filename ?: map->dso->name;
 
                memset(&di, 0, sizeof(di));
-               if (dwarf_find_debug_frame(0, &di, ip, base, map->dso->name,
+               if (dwarf_find_debug_frame(0, &di, ip, base, symfile,
                                           map->start, map->end))
                        return dwarf_search_unwind_table(as, ip, &di, pi,
                                                         need_unwind_info, arg);
        }
 #endif
 
-       return -EINVAL;
+       return ret;
 }
 
 static int access_fpreg(unw_addr_space_t __maybe_unused as,
@@ -456,7 +466,7 @@ static int access_mem(unw_addr_space_t __maybe_unused as,
                if (ret) {
                        pr_debug("unwind: access_mem %p not inside range"
                                 " 0x%" PRIx64 "-0x%" PRIx64 "\n",
-                                (void *) addr, start, end);
+                                (void *) (uintptr_t) addr, start, end);
                        *valp = 0;
                        return ret;
                }
@@ -466,7 +476,7 @@ static int access_mem(unw_addr_space_t __maybe_unused as,
        offset = addr - start;
        *valp  = *(unw_word_t *)&stack->data[offset];
        pr_debug("unwind: access_mem addr %p val %lx, offset %d\n",
-                (void *) addr, (unsigned long)*valp, offset);
+                (void *) (uintptr_t) addr, (unsigned long)*valp, offset);
        return 0;
 }