perf top: Add --objdump option

perf: Add objdump option to 'perf top'

Like with 'perf annotate' add the --objdump option to perf top so users
can specify an alternate path to the /usr/bin/objdump binary.

Reported-by: David A. Gilbert <DavidAGilbert@uk.ibm.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: DavidAGilbert@uk.ibm.com
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Maynard Johnson <mpjohn@us.ibm.com>
Link: http://lkml.kernel.org/r/20130515055651.GA9985@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index e06c4f8..a237059 100644 (file)
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -40,6 +40,7 @@
 #include "util/xyarray.h"
 #include "util/sort.h"
 #include "util/intlist.h"
+#include "arch/common.h"
 
 #include "util/debug.h"
 
@@ -939,6 +940,12 @@ static int __cmd_top(struct perf_top *top)
        if (top->session == NULL)
                return -ENOMEM;
 
+       if (!objdump_path) {
+               ret = perf_session_env__lookup_objdump(&top->session->header.env);
+               if (ret)
+                       goto out_delete;
+       }
+
        ret = perf_top__setup_sample_type(top);
        if (ret)
                goto out_delete;
@@ -1114,6 +1121,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
                    "Interleave source code with assembly code (default)"),
        OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
                    "Display raw encoding of assembly instructions (default)"),
+       OPT_STRING(0, "objdump", &objdump_path, "path",
+                   "objdump binary to use for disassembly and annotations"),
        OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
                   "Specify disassembler style (e.g. -M intel for intel syntax)"),
        OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"),