mirror_zfs/include/Makefile.am
Brian Behlendorf d04c8a563c Atomic64 compatibility for 32-bit systems without kernel support.
This patch is another step towards updating the code to handle the
32-bit kernels which I have not been regularly testing.  This changes
do not really impact the common case I'm expected which is the latest
kernel running on an x86_64 arch.

Until the linux-2.6.31 kernel the x86 arch did not have support for
64-bit atomic operations.  Additionally, the new atomic_compat.h support
for this case was wrong because it embedded a spinlock in the atomic
variable which must always and only be 64-bits total.  To handle these
32-bit issues we now simply fall back to the --enable-atomic-spinlock
implementation if the kernel does not provide the 64-bit atomic funcs.

The second issue this patch addresses is the DEBUG_KMEM assumption that
there will always be atomic64 funcs available.  On 32-bit archs this may
not be true, and actually that's just fine.  In that case the kernel will
will never be able to allocate more the 32-bits worth anyway.  So just
check if atomic64 funcs are available, if they are not it means this
is a 32-bit machine and we can safely use atomic_t's instead.
2009-12-04 15:54:12 -08:00

24 lines
827 B
Makefile

# All headers are referenced by this top level Makefile.am are
# noinst_HEADERS because they are not installed in the usual include
# location. We do not want to be using $includedir for this.
# Installation is handled by the custom install-data-local rule.
noinst_HEADERS = *.h
noinst_HEADERS += fs/*.h
noinst_HEADERS += linux/*.h
noinst_HEADERS += rpc/*.h
noinst_HEADERS += sharefs/*.h
noinst_HEADERS += sys/fm/*.h
noinst_HEADERS += sys/fs/*.h
noinst_HEADERS += sys/sysevent/*.h
noinst_HEADERS += sys/*.h
noinst_HEADERS += util/*.h
noinst_HEADERS += vm/*.h
install-data-local:
destname=spl-$(SPL_META_VERSION)/$(LINUX_VERSION); \
instdest=$(DESTDIR)/${prefix}/src/$$destname; \
instfiles=`find . -name '*.h'`; \
for instfile in $$instfiles; do \
$(INSTALL) -D $$instfile $$instdest/$$instfile; \
done