scftorture: Count single_rpc offline failures in statistics outputgrafted

scf_torture_stats_print() aggregates each invoker thread's counters
into a local scf_statistics structure before printing, but the
n_single_rpc_ofl field is missing from the aggregation loop.  As a
result, the "single_rpc_ofl" value printed in the statistics line is
always zero, even when smp_call_function_single() invocations for the
RPC test have failed due to offline CPUs and been counted by the
invoker threads.

Add the missing accumulation so that the printed value reflects the
actual counts.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/tools/perf/Documentation/perf-data.txt b/tools/perf/Documentation/perf-data.txt
new file mode 100644
index 000000000..20f178d61
--- /dev/null
+++ b/tools/perf/Documentation/perf-data.txt
@@ -0,0 +1,82 @@
+perf-data(1)
+============
+
+NAME
+----
+perf-data - Data file related processing
+
+SYNOPSIS
+--------
+[verse]
+'perf data' [<common options>] <command> [<options>]",
+
+DESCRIPTION
+-----------
+Data file related processing.
+
+COMMANDS
+--------
+convert::
+	Converts perf data file into another format.
+	It's possible to set data-convert debug variable to get debug messages from conversion,
+	like:
+	  perf --debug data-convert data convert ...
+
+OPTIONS for 'convert'
+---------------------
+--to-ctf::
+	Triggers the CTF conversion, specify the path of CTF data directory.
+
+--to-json::
+	Triggers JSON conversion. Specify the JSON filename to output.
+
+--tod::
+	Convert time to wall clock time.
+
+-i::
+	Specify input perf data file path.
+
+-f::
+--force::
+	Don't complain, do it.
+
+--time::
+	Only convert samples within given time window: <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 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,...'.
+
+	For example:
+	Select the second 10% time slice:
+
+	  perf data convert --to-json out.json --time 10%/2
+
+	Select from 0% to 10% time slice:
+
+	  perf data convert --to-json out.json --time 0%-10%
+
+	Select the first and second 10% time slices:
+
+	  perf data convert --to-json out.json --time 10%/1,10%/2
+
+	Select from 0% to 10% and 30% to 40% slices:
+
+	  perf data convert --to-json out.json --time 0%-10%,30%-40%
+
+-v::
+--verbose::
+        Be more verbose (show counter open errors, etc).
+
+--all::
+	Convert all events, including non-sample events (comm, fork, ...), to output.
+	Default is off, only convert samples.
+
+SEE ALSO
+--------
+linkperf:perf[1]
+[1] Common Trace Format - http://www.efficios.com/ctf