diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2016-01-09 11:16:29 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-01-12 16:42:08 +0100 |
| commit | 34b7b0f95d41d2351a080e774d71085171db90e6 (patch) | |
| tree | 065cfa3b53e86cd17ba2b4b13fc0179e58bd9fe4 /tools/perf | |
| parent | perf ui/tui: Print helpline message as is (diff) | |
| download | linux-34b7b0f95d41d2351a080e774d71085171db90e6.tar.xz linux-34b7b0f95d41d2351a080e774d71085171db90e6.zip | |
perf tools: Fallback to srcdir/Documentation/tips.txt
Some people don't install perf, but just use compiled version in the
source. Fallback to lookup the source directory for those poor guys. :)
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1452334589-8782-4-git-send-email-namhyung@kernel.org
[ Make perf_tip() return NULL for ENOENT, making the fallback to really take place ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-report.c | 10 | ||||
| -rw-r--r-- | tools/perf/util/util.c | 11 |
2 files changed, 15 insertions, 6 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index d5a42ee12529..2bf537f190a0 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -28,6 +28,7 @@ #include "util/tool.h" #include <subcmd/parse-options.h> +#include <subcmd/exec-cmd.h> #include "util/parse-events.h" #include "util/thread.h" @@ -433,7 +434,14 @@ static int report__browse_hists(struct report *rep) int ret; struct perf_session *session = rep->session; struct perf_evlist *evlist = session->evlist; - const char *help = perf_tip(TIPDIR); + const char *help = perf_tip(system_path(TIPDIR)); + + if (help == NULL) { + /* fallback for people who don't install perf ;-) */ + help = perf_tip(DOCDIR); + if (help == NULL) + help = "Cannot load tips.txt file, please install perf!"; + } switch (use_browser) { case 1: diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 88b8f8d21f58..ead9509835d2 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -17,7 +17,6 @@ #include <unistd.h> #include "callchain.h" #include "strlist.h" -#include <subcmd/exec-cmd.h> struct callchain_param callchain_param = { .mode = CHAIN_GRAPH_ABS, @@ -672,14 +671,16 @@ const char *perf_tip(const char *dirpath) struct str_node *node; char *tip = NULL; struct strlist_config conf = { - .dirname = system_path(dirpath) , + .dirname = dirpath, + .file_only = true, }; tips = strlist__new("tips.txt", &conf); - if (tips == NULL || strlist__nr_entries(tips) == 1) { - tip = (char *)"Cannot find tips.txt file"; + if (tips == NULL) + return errno == ENOENT ? NULL : "Tip: get more memory! ;-p"; + + if (strlist__nr_entries(tips) == 0) goto out; - } node = strlist__entry(tips, random() % strlist__nr_entries(tips)); if (asprintf(&tip, "Tip: %s", node->s) < 0) |