Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (61 commits)
  tracing: Add __used annotation to event variable
  perf, trace: Fix !x86 build bug
  perf report: Support multiple events on the TUI
  perf annotate: Fix up usage of the build id cache
  x86/mmiotrace: Remove redundant instruction prefix checks
  perf annotate: Add TUI interface
  perf tui: Remove annotate from popup menu after failure
  perf report: Don't start the TUI if -D is used
  perf: Fix getline undeclared
  perf: Optimize perf_tp_event_match()
  perf: Remove more code from the fastpath
  perf: Optimize the !vmalloc backed buffer
  perf: Optimize perf_output_copy()
  perf: Fix wakeup storm for RO mmap()s
  perf-record: Share per-cpu buffers
  perf-record: Remove -M
  perf: Ensure that IOC_OUTPUT isn't used to create multi-writer buffers
  perf, trace: Optimize tracepoints by using per-tracepoint-per-cpu hlist to track events
  perf, trace: Optimize tracepoints by removing IRQ-disable from perf/tracepoint interaction
  perf tui: Allow disabling the TUI on a per command basis in ~/.perfconfig
  ...

1 files changed, 23 insertions, 10 deletions

diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 562b1443e785..d964cb199c67 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -668,6 +668,7 @@ static int convert_probe_point(Dwarf_Die *sp_die, struct probe_finder *pf)
         ret = dwarf_getlocation_addr(&fb_attr, pf->addr, &pf->fb_ops, &nops, 1);
         if (ret <= 0 || nops == 0) {
                 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) {
                 Dwarf_Frame *frame;
@@ -677,6 +678,7 @@ static int convert_probe_point(Dwarf_Die *sp_die, struct probe_finder *pf)
                                    (uintmax_t)pf->addr);
                         return -ENOENT;
                 }
+#endif
         }
 
         /* Find each argument */
@@ -741,32 +743,36 @@ static int find_lazy_match_lines(struct list_head *head,
                                  const char *fname, const char *pat)
 {
         char *fbuf, *p1, *p2;
-        int fd, ret, line, nlines = 0;
+        int fd, line, nlines = -1;
         struct stat st;
 
         fd = open(fname, O_RDONLY);
         if (fd < 0) {
                 pr_warning("Failed to open %s: %s\n", fname, strerror(-fd));
-                return fd;
+                return -errno;
         }
 
-        ret = fstat(fd, &st);
-        if (ret < 0) {
+        if (fstat(fd, &st) < 0) {
                 pr_warning("Failed to get the size of %s: %s\n",
                            fname, strerror(errno));
-                return ret;
+                nlines = -errno;
+                goto out_close;
         }
-        fbuf = xmalloc(st.st_size + 2);
-        ret = read(fd, fbuf, st.st_size);
-        if (ret < 0) {
+
+        nlines = -ENOMEM;
+        fbuf = malloc(st.st_size + 2);
+        if (fbuf == NULL)
+                goto out_close;
+        if (read(fd, fbuf, st.st_size) < 0) {
                 pr_warning("Failed to read %s: %s\n", fname, strerror(errno));
-                return ret;
+                nlines = -errno;
+                goto out_free_fbuf;
         }
-        close(fd);
         fbuf[st.st_size] = '\n';        /* Dummy line */
         fbuf[st.st_size + 1] = '\0';
         p1 = fbuf;
         line = 1;
+        nlines = 0;
         while ((p2 = strchr(p1, '\n')) != NULL) {
                 *p2 = '\0';
                 if (strlazymatch(p1, pat)) {
@@ -776,7 +782,10 @@ static int find_lazy_match_lines(struct list_head *head,
                 line++;
                 p1 = p2 + 1;
         }
+out_free_fbuf:
         free(fbuf);
+out_close:
+        close(fd);
         return nlines;
 }
 
@@ -953,11 +962,15 @@ int find_kprobe_trace_events(int fd, struct perf_probe_event *pev,
         if (!dbg) {
                 pr_warning("No dwarf info found in the vmlinux - "
                         "please rebuild with CONFIG_DEBUG_INFO=y.\n");
+                free(pf.tevs);
+                *tevs = NULL;
                 return -EBADF;
         }
 
+#if _ELFUTILS_PREREQ(0, 142)
         /* Get the call frame information from this dwarf */
         pf.cfi = dwarf_getcfi(dbg);
+#endif
 
         off = 0;
         line_list__init(&pf.lcache);