kernel/tools/testing/selftests/rcutorture/bin, branch linux-5.2.y

torture: Suppress false-positive CONFIG_INITRAMFS_SOURCE complaint

2019-03-26T21:42:53Z

The scripting must supply the CONFIG_INITRAMFS_SOURCE Kconfig option so that kbuild can find the desired initrd, but the configcheck.sh script gets confused by this option because it takes a string instead of the expected y/n/m. This causes checkconfig.sh to complain about CONFIG_INITRAMFS_SOURCE in the torture-test output (though not in the summary). As more people use rcutorture, the resulting confusion is an increasing concern. This commit therefore suppresses this false-positive warning by filtering CONFIG_INITRAMFS_SOURCE from within the checkconfig.sh script. Reported-by: Joel Fernandes Signed-off-by: Paul E. McKenney

tools/.../rcutorture: Convert to SPDX license identifier

2019-03-26T21:42:53Z

Replace the license boiler plate with a SPDX license identifier. While in the area, update an email address and add copyright notices. Signed-off-by: Paul E. McKenney

tools headers: Move the nolibc header from rcutorture to tools/include/nolibc/

2019-01-25T23:37:13Z

As suggested by Ingo, this header file might benefit other tools than just rcutorture. For now it's quite limited, but is easy to extend, so exposing it into tools/include/nolibc/ will make it much easier to adopt by other tools. The mkinitrd.sh script in rcutorture was updated to use this new location. Cc: Ingo Molnar Cc: Arnaldo Carvalho de Melo Cc: Paul E. McKenney Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney

rcutorture/nolibc: Add a bit of documentation to explain how to use nolibc

2019-01-25T23:37:13Z

Ingo rightfully asked for a bit more documentation in the nolibc header, so this patch adds some explanation about its purpose, how it's made, and how to use it. Cc: Ingo Molnar Cc: Paul E. McKenney Cc: Randy Dunlap Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney Reviewed-by: Joey Pabalinas Reviewed-by: Randy Dunlap

rcutorture/nolibc: Fix some poor indentation and alignment

2019-01-25T23:37:12Z

A few macros had their rightmost backslash misaligned, and the pollfd struct definition resisted the previous code reindent. Nothing else changed. Cc: Paul E. McKenney Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney Reviewed-by: Joey Pabalinas

rcutorture/nolibc: Fix the clobbered registers in the MIPS syscall definition

2019-01-25T23:37:11Z

A last-minute checkpatch cleanup caused most of list of clobbered registers to be lost in the MIPS syscall definition. Although this code is not yet used on MIPS, it is nevertheless better to fix it before it does get used. Cc: Paul E. McKenney Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney

torture: Explain and simplify odd "for" loop in mkinitrd.sh

2019-01-25T23:37:09Z

Why a Bourne-shell "for" loop? And why 192 instances of "a"? This commit adds a shell comment to present the answer to these mysteries. It also uses a series of factor-of-four Bourne-shell assignments to make it easy to see how many instances there are, replacing the earlier wall of 'a' characters. Reported-by: Josh Triplett Signed-off-by: Paul E. McKenney Reviewed-by: Josh Triplett [ paulmck: Fix wrong-variable bugs noted by Andrea Parri. ]

rcutorture: Make use of nolibc when available

2018-11-09T05:52:55Z

This reduces the size of the init executable from ~800 kB to ~800 bytes on x86_64. This is only implemented for x86_64, i386, arm and arm64. Others not tested. Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney

rcutorture: Import a copy of nolibc

2018-11-09T05:52:55Z

This is a definition of the most common syscalls needed in minimalist init executables, allowing to statically build them with no external dependencies. It is sufficient in its current form to build rcutorture's init on x86_64, i386, arm, and arm64. Others have not been ported or tested. Updates may be found here : http://git.formilux.org/?p=people/willy/nolibc.git Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney

rcutorture: Check initrd/init instead of initrd only

2018-11-09T05:52:55Z

If the build fails, we can end up with an empty initrd directory which prevents the build script from operating again. Better rely on the resulting init executable instead. Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney