linux-toradex.git/arch/s390/kernel/vdso32/Makefile, branch v4.10

s390: enable UBSAN

2016-09-20T12:26:23+00:00

This enables UBSAN for s390. We have to disable the null sanitizer
as s390 code does access memory via a null pointer (the prefix page).

Signed-off-by: Christian Borntraeger 
Acked-by: Andrey Ryabinin 
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390: enable kcov support

2016-06-28T07:32:39+00:00

Now that hopefully all inline assemblies have been converted to single
basic blocks we can enable kcov on s390.

Note that this patch does not disable as many files on s390 like the
x86 variant does. Right now I didn't see a reason to do that, however
additional files or directories can be excluded at any time.

The runtime overhead seems to be quite high.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/vdso: optimize getcpu system call

2016-01-11T12:01:24+00:00

Add the CPU number to the per-cpu vdso data page and add the
__kernel_getcpu function to the vdso object to retrieve the
CPU number in user space.

Suggested-by: Heiko Carstens 
Reviewed-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/vdso: emit a GNU hash

2015-08-07T07:57:39+00:00

As proposed by Andy Lutomirski create the SysV and the GNU hash
for the vdso objects. This may make some dynamic loaders a bit
faster.

Signed-off-by: Martin Schwidefsky

[S390] vdso: disable gcov profiling

2011-05-23T08:24:29+00:00

The concepts of VDSO and gcov-based profiling don't mix: the former
includes kernel-provided code running in userspace, the latter adds
instructions that modify counters in kernel data segments. On s390
this has not been a problem so far due to VDSO code being written in
all-assembler which is exempt from gcov-based profiling. This could
change in the future, so disable profiling excplicitly for VDSO code.

Signed-off-by: Peter Oberparleiter 
Signed-off-by: Martin Schwidefsky

kbuild: rename ld-option to cc-ldoption

2009-09-20T10:27:42+00:00

ld-option is misnamed as it test options to gcc, not to ld.
Renamed it to reflect this.

Cc: Andi Kleen 
Cc: Roland McGrath 
Signed-off-by: Sam Ravnborg

[S390] introduce vdso on s390

2008-12-25T12:38:55+00:00

Add a vdso to speed up gettimeofday and clock_getres/clock_gettime for
CLOCK_REALTIME/CLOCK_MONOTONIC.

Signed-off-by: Martin Schwidefsky