From: Paul E. McKenney <paulmck@kernel.org>
Date: Fri, 4 Sep 2020 18:54:52 +0000 (-0700)
Subject: Merge branch 'csd.2020.09.04a' into HEAD
X-Git-Tag: v5.15~2632^2^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6fe208f63a79f4f726f3be2b78ea3dd40487b657;p=platform%2Fkernel%2Flinux-starfive.git

Merge branch 'csd.2020.09.04a' into HEAD

csd.2020.09.04a: CPU smp_call_function() torture tests.
---

6fe208f63a79f4f726f3be2b78ea3dd40487b657
diff --cc lib/Kconfig.debug
index 0c3a6c752ede,86a35fdfe021..4ac6f61b9475
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@@ -1367,16 -1367,17 +1367,27 @@@ config WW_MUTEX_SELFTES
  	  Say M if you want these self tests to build as a module.
  	  Say N if you are unsure.
  
 +config SCF_TORTURE_TEST
 +	tristate "torture tests for smp_call_function*()"
 +	depends on DEBUG_KERNEL
 +	select TORTURE_TEST
 +	help
 +	  This option provides a kernel module that runs torture tests
 +	  on the smp_call_function() family of primitives.  The kernel
 +	  module may be built after the fact on the running kernel to
 +	  be tested, if desired.
 +
+ config CSD_LOCK_WAIT_DEBUG
+ 	bool "Debugging for csd_lock_wait(), called from smp_call_function*()"
+ 	depends on DEBUG_KERNEL
+ 	depends on 64BIT
+ 	default n
+ 	help
+ 	  This option enables debug prints when CPUs are slow to respond
+ 	  to the smp_call_function*() IPI wrappers.  These debug prints
+ 	  include the IPI handler function currently executing (if any)
+ 	  and relevant stack traces.
+ 
  endmenu # lock debugging
  
  config TRACE_IRQFLAGS