perf time-utils: Add support for multiple explicit time intervals

Currently only a single explicit time range is accepted. Add support for
multiple ranges separated by spaces, which requires the string to be
quoted. Update the time utils test accordingly.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190604130017.31207-20-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

3 files changed, 9 insertions, 5 deletions

diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt
index 5732f69580ab..facd91e4e945 100644
--- a/tools/perf/Documentation/perf-diff.txt
+++ b/tools/perf/Documentation/perf-diff.txt
@@ -145,9 +145,11 @@ OPTIONS
         <start>,<stop>. Times have the format seconds.nanoseconds. If 'start'
         is not given (i.e. time string is ',x.y') then analysis starts at
         the beginning of the file. If stop time is not given (i.e. time
-        string is 'x.y,') then analysis goes to the end of the file. Time string is
-        'a1.b1,c1.d1:a2.b2,c2.d2'. Use ':' to separate timestamps for different
-        perf.data files.
+        string is 'x.y,') then analysis goes to the end of the file.
+        Multiple ranges can be separated by spaces, which requires the argument
+        to be quoted e.g. --time "1234.567,1234.789 1235,"
+        Time string is'a1.b1,c1.d1:a2.b2,c2.d2'. Use ':' to separate timestamps
+        for different perf.data files.
 
         For example, we get the timestamp information from 'perf script'.
 
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 3de029f6881d..8c4372819e11 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -415,7 +415,8 @@ OPTIONS
         have the format seconds.nanoseconds. If start is not given (i.e. time
         string is ',x.y') then analysis starts at the beginning of the file. If
         stop time is not given (i.e. time string is 'x.y,') then analysis goes
-        to end of file.
+        to end of file. Multiple ranges can be separated by spaces, which
+        requires the argument to be quoted e.g. --time "1234.567,1234.789 1235,"
 
         Also support time percent with multiple time ranges. Time string is
         'a%/n,b%/m,...' or 'a%-b%,c%-%d,...'.
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 878349cce968..d4e2e18a5881 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -364,7 +364,8 @@ include::itrace.txt[]
         have the format seconds.nanoseconds. If start is not given (i.e. time
         string is ',x.y') then analysis starts at the beginning of the file. If
         stop time is not given (i.e. time string is 'x.y,') then analysis goes
-        to end of file.
+        to end of file. Multiple ranges can be separated by spaces, which
+        requires the argument to be quoted e.g. --time "1234.567,1234.789 1235,"
 
         Also support time percent with multiple time ranges. Time string is
         'a%/n,b%/m,...' or 'a%-b%,c%-%d,...'.