perf tools: Introduce trim function

To be used in cases for both sides trim.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andreas Hollmann <hollmann@in.tum.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1460013073-18444-1-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 2a83414..e70df2e 100644 (file)
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1607,9 +1607,8 @@ static int hists_browser__scnprintf_hierarchy_headers(struct hist_browser *brows
 
                        ret = fmt->header(fmt, &dummy_hpp, hists_to_evsel(hists));
                        dummy_hpp.buf[ret] = '\0';
-                       rtrim(dummy_hpp.buf);
 
-                       start = ltrim(dummy_hpp.buf);
+                       start = trim(dummy_hpp.buf);
                        ret = strlen(start);
 
                        if (start != dummy_hpp.buf)

diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 7aff5ac..560eb47 100644 (file)
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -569,9 +569,8 @@ static int print_hierarchy_header(struct hists *hists, struct perf_hpp *hpp,
                        first_col = false;
 
                        fmt->header(fmt, hpp, hists_to_evsel(hists));
-                       rtrim(hpp->buf);
 
-                       header_width += fprintf(fp, "%s", ltrim(hpp->buf));
+                       header_width += fprintf(fp, "%s", trim(hpp->buf));
                }
        }
 

diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 8298d60..3bf3de8 100644 (file)
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -254,6 +254,11 @@ int hex2u64(const char *ptr, u64 *val);
 char *ltrim(char *s);
 char *rtrim(char *s);
 
+static inline char *trim(char *s)
+{
+       return ltrim(rtrim(s));
+}
+
 void dump_stack(void);
 void sighandler_dump_stack(int sig);