Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/bench/Build b/tools/perf/bench/Build
index eafce1a..e4e321b 100644
--- a/tools/perf/bench/Build
+++ b/tools/perf/bench/Build
@@ -7,6 +7,9 @@
 perf-y += futex-requeue.o
 perf-y += futex-lock-pi.o
 
+perf-y += epoll-wait.o
+perf-y += epoll-ctl.o
+
 perf-$(CONFIG_X86_64) += mem-memcpy-x86-64-lib.o
 perf-$(CONFIG_X86_64) += mem-memcpy-x86-64-asm.o
 perf-$(CONFIG_X86_64) += mem-memset-x86-64-asm.o