perf script: Add missing separator for "-F ip,brstack" (and brstackoff)

commit e9516c0813aeb89ebd19ec0ed39fbfcd78b6ef3a upstream.

Prior to commit 55b9b50811ca ("perf script: Support -F brstack,dso and
brstacksym,dso"), we were printing a space before the brstack data. It
seems that this space was important.  Without it, parsing is difficult.

Very sorry for the mistake.

Notice here how the "ip" and "brstack" run together:

$ perf script -F ip,brstack | head -n 1
          22e18c40x22e19e2/0x22e190b/P/-/-/0 0x22e19a1/0x22e19d0/P/-/-/0 0x22e195d/0x22e1990/P/-/-/0 0x22e18e9/0x22e1943/P/-/-/0 0x22e1a69/0x22e18c0/P/-/-/0 0x22e19f7/0x22e1a20/P/-/-/0 0x22e1910/0x22e19ee/P/-/-/0 0x22e19e2/0x22e190b/P/-/-/0 0x22e19a1/0x22e19d0/P/-/-/0 0x22e195d/0x22e1990/P/-/-/0 0x22e18e9/0x22e1943/P/-/-/0 0x22e1a69/0x22e18c0/P/-/-/0 0x22e19f7/0x22e1a20/P/-/-/0 0x22e1910/0x22e19ee/P/-/-/0 0x22e19e2/0x22e190b/P/-/-/0 0x22e19a1/0x22e19d0/P/-/-/0

After this diff, sanity is restored:

$ perf script -F ip,brstack | head -n 1
          22e18c4 0x22e19e2/0x22e190b/P/-/-/0  0x22e19a1/0x22e19d0/P/-/-/0  0x22e195d/0x22e1990/P/-/-/0  0x22e18e9/0x22e1943/P/-/-/0  0x22e1a69/0x22e18c0/P/-/-/0  0x22e19f7/0x22e1a20/P/-/-/0  0x22e1910/0x22e19ee/P/-/-/0  0x22e19e2/0x22e190b/P/-/-/0  0x22e19a1/0x22e19d0/P/-/-/0  0x22e195d/0x22e1990/P/-/-/0  0x22e18e9/0x22e1943/P/-/-/0  0x22e1a69/0x22e18c0/P/-/-/0  0x22e19f7/0x22e1a20/P/-/-/0  0x22e1910/0x22e19ee/P/-/-/0  0x22e19e2/0x22e190b/P/-/-/0  0x22e19a1/0x22e19d0/P/-/-/0

Signed-off-by: Mark Santaniello <marksan@fb.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: 55b9b50811ca ("perf script: Support -F brstack,dso and brstacksym,dso")
Link: http://lkml.kernel.org/r/20171006080722.3442046-1-marksan@fb.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 83cdc0a61fd6fc38813d8bac07894a4190655438..88a484c273e8cc7b88c37cd9c7397583e2c60ef1 100644 (file)
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -578,7 +578,7 @@ static void print_sample_brstack(struct perf_sample *sample,
                        thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt);
                }
 
-               printf("0x%"PRIx64, from);
+               printf(" 0x%"PRIx64, from);
                if (PRINT_FIELD(DSO)) {
                        printf("(");
                        map__fprintf_dsoname(alf.map, stdout);
@@ -673,7 +673,7 @@ static void print_sample_brstackoff(struct perf_sample *sample,
                if (alt.map && !alt.map->dso->adjust_symbols)
                        to = map__map_ip(alt.map, to);
 
-               printf("0x%"PRIx64, from);
+               printf(" 0x%"PRIx64, from);
                if (PRINT_FIELD(DSO)) {
                        printf("(");
                        map__fprintf_dsoname(alf.map, stdout);