Commit 1802656e authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring: add GCOV_PROFILE_URING Kconfig option 



If GCOV is enabled and this option is set, it enables code coverage
profiling of the io_uring subsystem. Only use this for test purposes,
as it will impact the runtime performance.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent ae98dbf4

init/Kconfig

+13 −0
Original line number Diff line number Diff line
@@ -1687,6 +1687,19 @@ config IO_URING 
	  applications to submit and complete IO through submission and

	  completion rings that are shared between the kernel and application.



config GCOV_PROFILE_URING

	bool "Enable GCOV profiling on the io_uring subsystem"

	depends on GCOV_KERNEL

	help

	  Enable GCOV profiling on the io_uring subsystem, to facilitate

	  code coverage testing.



	  If unsure, say N.



	  Note that this will have a negative impact on the performance of

	  the io_uring subsystem, hence this should only be enabled for

	  specific test purposes.



config ADVISE_SYSCALLS

	bool "Enable madvise/fadvise syscalls" if EXPERT

	default y

io_uring/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -2,6 +2,10 @@ 
#

# Makefile for io_uring



ifdef CONFIG_GCOV_PROFILE_URING

GCOV_PROFILE := y

endif



obj-$(CONFIG_IO_URING)		+= io_uring.o opdef.o kbuf.o rsrc.o notif.o \

					tctx.o filetable.o rw.o net.o poll.o \

					eventfd.o uring_cmd.o openclose.o \