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, 186 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-class-backlight b/Documentation/ABI/testing/sysfs-class-backlight
new file mode 100644
index 000000000..c453646b0
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-backlight
@@ -0,0 +1,186 @@
+What:		/sys/class/backlight/<backlight>/scale
+Date:		July 2019
+KernelVersion:	5.4
+Contact:	Daniel Thompson <daniel.thompson@linaro.org>
+Description:
+		Description of the scale of the brightness curve.
+
+		The human eye senses brightness approximately logarithmically,
+		hence linear changes in brightness are perceived as being
+		non-linear. To achieve a linear perception of brightness changes
+		controls like sliders need to apply a logarithmic mapping for
+		backlights with a linear brightness curve.
+
+		Possible values of the attribute are:
+
+		unknown
+		  The scale of the brightness curve is unknown.
+
+		linear
+		  The brightness changes linearly with each step. Brightness
+		  controls should apply a logarithmic mapping for a linear
+		  perception.
+
+		non-linear
+		  The brightness changes non-linearly with each step. Brightness
+		  controls should use a linear mapping for a linear perception.
+
+What:		/sys/class/backlight/<backlight>/ambient_light_level
+Date:		Apr, 2010
+KernelVersion:	v2.6.35
+Contact:	Michael Hennerich <michael.hennerich@analog.com>
+Description:
+		(RO) Get conversion value of the light sensor.
+
+		The value is automatically updated every 80 ms when the
+		light sensor is enabled.
+
+		The value range is device-driver specific:
+
+		For ADP8870:
+
+		  It returns integer between 0 (dark) and 8000 (max ambient
+		  brightness).
+
+		For ADP8860:
+
+		  It returns a 13-bits integer.
+
+What:		/sys/class/backlight/<backlight>/ambient_light_zone
+Date:		Apr, 2010
+KernelVersion:	v2.6.35
+Contact:	Michael Hennerich <michael.hennerich@analog.com>,
+		device-drivers-devel@blackfin.uclinux.org
+
+Description:
+		(RW) Read or write the specific brightness level at which the
+		backlight operates.
+
+		The value meaning is device-driver specific:
+
+		For ADP8860:
+
+		  ==	==========================
+		   0	Off: Backlight set to 0 mA
+		   1	Level 1: daylight
+		   2	Level 2: bright
+		   3	Level 3: dark
+		  ==	==========================
+
+		For ADP8870:
+
+		  ==	==========================
+		   0	Off: Backlight set to 0 mA
+		   1	Level 1: daylight
+		   2	Level 2: bright
+		   3	Level 3: office
+		   4	Level 4: indoor
+		   5	Level 5: dark
+		  ==	==========================
+
+		Writing 0 returns to normal/automatic ambient light level
+		operation.
+
+		It can be enabled by writing the value stored in
+		/sys/class/backlight/<backlight>/max_brightness to
+		/sys/class/backlight/<backlight>/brightness.
+
+What:		/sys/class/backlight/<backlight>/<ambient light zone>_max
+Date:		Sep, 2009
+KernelVersion:	v2.6.32
+Contact:	device-drivers-devel@blackfin.uclinux.org
+Description:
+		Control the maximum brightness for <ambient light zone>
+		on this <backlight>. Values are between 0 and 127. This file
+		will also show the brightness level stored for this
+		<ambient light zone>.
+
+		The <ambient light zone> is device-driver specific:
+
+		For ADP5520 and ADP5501, <ambient light zone> can be:
+
+		===========  ================================================
+		Ambient      sysfs entry
+		light zone
+		===========  ================================================
+		daylight     /sys/class/backlight/<backlight>/daylight_max
+		office       /sys/class/backlight/<backlight>/office_max
+		dark         /sys/class/backlight/<backlight>/dark_max
+		===========  ================================================
+
+		For ADP8860, <ambient light zone> can be:
+
+		===========  ================================================
+		Ambient      sysfs entry
+		light zone
+		===========  ================================================
+		l1_daylight  /sys/class/backlight/<backlight>/l1_daylight_max
+		l2_office    /sys/class/backlight/<backlight>/l2_office_max
+		l3_dark      /sys/class/backlight/<backlight>/l3_dark_max
+		===========  ================================================
+
+		For ADP8870, <ambient light zone> can be:
+
+		===========  ================================================
+		Ambient      sysfs entry
+		light zone
+		===========  ================================================
+		l1_daylight  /sys/class/backlight/<backlight>/l1_daylight_max
+		l2_bright    /sys/class/backlight/<backlight>/l2_bright_max
+		l3_office    /sys/class/backlight/<backlight>/l3_office_max
+		l4_indoor    /sys/class/backlight/<backlight>/l4_indoor_max
+		l5_dark      /sys/class/backlight/<backlight>/l5_dark_max
+		===========  ================================================
+
+		See also: /sys/class/backlight/<backlight>/ambient_light_zone.
+
+What:		/sys/class/backlight/<backlight>/<ambient light zone>_dim
+Date:		Sep, 2009
+KernelVersion:	v2.6.32
+Contact:	device-drivers-devel@blackfin.uclinux.org
+Description:
+		Control the dim brightness for <ambient light zone>
+		on this <backlight>. Values are between 0 and 127, typically
+		set to 0. Full off when the backlight is disabled.
+		This file will also show the dim brightness level stored for
+		this <ambient light zone>.
+
+		The <ambient light zone> is device-driver specific:
+
+		For ADP5520 and ADP5501, <ambient light zone> can be:
+
+		===========  ================================================
+		Ambient      sysfs entry
+		light zone
+		===========  ================================================
+		daylight     /sys/class/backlight/<backlight>/daylight_dim
+		office       /sys/class/backlight/<backlight>/office_dim
+		dark         /sys/class/backlight/<backlight>/dark_dim
+		===========  ================================================
+
+		For ADP8860, <ambient light zone> can be:
+
+		===========  ================================================
+		Ambient      sysfs entry
+		light zone
+		===========  ================================================
+		l1_daylight  /sys/class/backlight/<backlight>/l1_daylight_dim
+		l2_office    /sys/class/backlight/<backlight>/l2_office_dim
+		l3_dark      /sys/class/backlight/<backlight>/l3_dark_dim
+		===========  ================================================
+
+		For ADP8870, <ambient light zone> can be:
+
+		===========  ================================================
+		Ambient      sysfs entry
+		light zone
+		===========  ================================================
+		l1_daylight  /sys/class/backlight/<backlight>/l1_daylight_dim
+		l2_bright    /sys/class/backlight/<backlight>/l2_bright_dim
+		l3_office    /sys/class/backlight/<backlight>/l3_office_dim
+		l4_indoor    /sys/class/backlight/<backlight>/l4_indoor_dim
+		l5_dark      /sys/class/backlight/<backlight>/l5_dark_dim
+		===========  ================================================
+
+		See also: /sys/class/backlight/<backlight>/ambient_light_zone.
+