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

Pull perf fixes from Ingo Molnar:
 "Tooling fixes, plus a simple hardware-enablement patch for the Intel
  RAPL PMU (energy use measurement) on Haswell CPUs, which I hope is
  still fine at this stage"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools: Instead of redirecting flex output, use -o
  perf tools: Fix double free in perf test 21 (code-reading.c)
  perf stat: Initialize statistics correctly
  perf bench: Set more defaults in the 'numa' suite
  perf bench: Fix segfault at the end of an 'all' execution
  perf bench: Update manpage to mention numa and futex
  perf probe: Use dwarf_getcfi_elf() instead of dwarf_getcfi()
  perf probe: Fix to handle errors in line_range searching
  perf probe: Fix --line option behavior
  perf tools: Pick up libdw without explicit LIBDW_DIR
  MAINTAINERS: Change e-mail to kernel.org one
  perf callchains: Disable unwind libraries when libelf isn't found
  tools lib traceevent: Do not call warning() directly
  tools lib traceevent: Print event name when show warning if possible
  perf top: Fix documentation of invalid -s option
  perf/x86: Enable DRAM RAPL support on Intel Haswell

1 files changed, 9 insertions, 6 deletions

diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index df0238654698..562762117639 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -985,7 +985,7 @@ static int debuginfo__find_probes(struct debuginfo *dbg,
 
 #if _ELFUTILS_PREREQ(0, 142)
         /* Get the call frame information from this dwarf */
-        pf->cfi = dwarf_getcfi(dbg->dbg);
+        pf->cfi = dwarf_getcfi_elf(dwarf_getelf(dbg->dbg));
 #endif
 
         off = 0;
@@ -1441,13 +1441,15 @@ static int line_range_walk_cb(const char *fname, int lineno,
                               void *data)
 {
         struct line_finder *lf = data;
+        int err;
 
         if ((strtailcmp(fname, lf->fname) != 0) ||
             (lf->lno_s > lineno || lf->lno_e < lineno))
                 return 0;
 
-        if (line_range_add_line(fname, lineno, lf->lr) < 0)
-                return -EINVAL;
+        err = line_range_add_line(fname, lineno, lf->lr);
+        if (err < 0 && err != -EEXIST)
+                return err;
 
         return 0;
 }
@@ -1473,14 +1475,15 @@ static int find_line_range_by_line(Dwarf_Die *sp_die, struct line_finder *lf)
 
 static int line_range_inline_cb(Dwarf_Die *in_die, void *data)
 {
-        find_line_range_by_line(in_die, data);
+        int ret = find_line_range_by_line(in_die, data);
 
         /*
          * We have to check all instances of inlined function, because
          * some execution paths can be optimized out depends on the
-         * function argument of instances
+         * function argument of instances. However, if an error occurs,
+         * it should be handled by the caller.
          */
-        return 0;
+        return ret < 0 ? ret : 0;
 }
 
 /* Search function definition from function name */