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, 10 insertions, 0 deletions

diff --git a/tools/perf/Documentation/android.txt b/tools/perf/Documentation/android.txt
new file mode 100644
index 000000000..3f3cc7ac3
--- /dev/null
+++ b/tools/perf/Documentation/android.txt
@@ -0,0 +1,10 @@
+How to compile perf for Android
+===============================
+
+There are two ways to build perf and run it on Android:
+
+- Method 1: Build perf with static linking. See Build.txt, section
+  "4) Cross compilation" for how to build a static perf binary.
+
+- Method 2: Download the Android NDK and use the bundled Clang to
+  build perf. See Build.txt, section "5) Build with clang" for details.