Revert 146792 - Lock-free GamepadSeqLock (try 2)

tools/valgrind/tsan/ignores.txt

 # This file lists the functions, object files and source files
 # which should be ignored (i.e. not instrumented) by ThreadSanitizer.
 # See http://code.google.com/p/data-race-test/wiki/ThreadSanitizerIgnores.
 
 # ignore these libraries
 obj:*/libfreetype*
 obj:*/libdbus*
 
 # we ignore the whole NSS library for now since
 # its instrumentation is very slow.
@@ skipping 42 matching lines @@
 ##################################################################
 # Don't instrument synchronization code
 src:*base/threading/thread_local_storage*
 src:*base/stats_counters*
 src:*base/synchronization/condition_variable*
 src:*base/synchronization/lock*
 src:*base/synchronization/waitable_event*
 
 # Don't instrument code dealing with atomics (base::subtle)
 fun:*base*subtle*Release_Store*
-fun:*base*subtle*NoBarrier_Store*
-fun:*base*subtle*Acquire_Load*
 fun:*base*subtle*NoBarrier_CompareAndSwap*
 fun:*base*subtle*NoBarrier_Load*
 # Keep some mangling so we don't match NoBarrier_AtomicIncrement
 fun:*base*subtle23Barrier_AtomicIncrement*
 
 # Don't instrument tcmalloc
 src:*/tcmalloc/*
 
 # This function is heavy in net_unittests
 fun_r:*disk_cache*BackendImpl*CheckAllEntries*
@@ skipping 80 matching lines @@
 fun:__gen_tempname
 
 # The sqlite cache is racing against a few different stacktraces,
 # so let's ignore it recursively. See http://crbug.com/84094
 fun_r:pcache1Fetch
 
 # "Suppress" a data race in TraceLog::GetCategory which has
 # fun:MessageLoop::RunTask at the top of the "current" stack which we don't want
 # to suppress. See http://crbug.com/98926
 fun:*base*debug*TraceLog*GetCategoryInternal*