On Sun, Dec 25, 2011 at 08:33:20PM +0100, Juergen Beisert wrote:
> >From its README:
> This data synchronization library provides read-side access which scales
> linearly with the number of cores. It does so by allowing multiples copies
> of a given data structure to live at the same time, and by monitoring the data
> structure accesses to detect grace periods after which memory reclamation is
> possible.
>
> Supported architectures are: x86, PPC and ARM.
>
> Signed-off-by: Juergen Beisert <[email protected]>
>
> diff --git a/rules/userspace-rcu.in b/rules/userspace-rcu.in
> new file mode 100644
> index 0000000..26bcdba
> --- /dev/null
> +++ b/rules/userspace-rcu.in
> @@ -0,0 +1,25 @@
> +## SECTION=system_libraries
> +
> +menuconfig USERSPACE_RCU
> + tristate
> + prompt "libuserspace-rcu "
> + select GLIBC_PTHREAD
> + help
> + liburcu is a LGPLv2.1 userspace RCU (read-copy-update) library. This
> + data synchronization library provides read-side access which scales
> + linearly with the number of cores. It does so by allowing multiples
> + copies of a given data structure to live at the same time, and by
> + monitoring the data structure accesses to detect grace periods after
> + which memory reclamation is possible.
> +
> +if USERSPACE_RCU
> +
> +config USERSPACE_RCU_SMP
> + bool
> + prompt "SMP support"
> + default y
> + help
> + Provide SMP support. Warning: Disable this only on real uniprocessor
> + systems.
> +
> +endif
> diff --git a/rules/userspace-rcu.make b/rules/userspace-rcu.make
> new file mode 100644
> index 0000000..d896aa6
> --- /dev/null
> +++ b/rules/userspace-rcu.make
> @@ -0,0 +1,73 @@
> +# -*-makefile-*-
> +#
> +# Copyright (C) 2011 by Juergen Beisert <[email protected]>
> +#
> +# See CREDITS for details about who has contributed to this project.
> +#
> +# For further information about the PTXdist project and license conditions
> +# see the README file.
> +#
> +
> +#
> +# We provide this package
> +#
> +PACKAGES-$(PTXCONF_USERSPACE_RCU) += userspace-rcu
> +
> +#
> +# Paths and names
> +#
> +USERSPACE_RCU_VERSION := 0.6.7
> +USERSPACE_RCU_MD5 := 2705dadd65beda8e8960472c082e44b3
> +USERSPACE_RCU := userspace-rcu-$(USERSPACE_RCU_VERSION)
> +USERSPACE_RCU_SUFFIX := tar.bz2
> +USERSPACE_RCU_URL :=
> http://lttng.org/files/urcu/$(USERSPACE_RCU).$(USERSPACE_RCU_SUFFIX)
> +USERSPACE_RCU_SOURCE := $(SRCDIR)/$(USERSPACE_RCU).$(USERSPACE_RCU_SUFFIX)
> +USERSPACE_RCU_DIR := $(BUILDDIR)/$(USERSPACE_RCU)
> +USERSPACE_RCU_LICENSE := LGPLv2.1
> +
> +#
> ----------------------------------------------------------------------------
> +# Prepare
> +#
> ----------------------------------------------------------------------------
> +
> +#
> +# autoconf
> +#
> +USERSPACE_RCU_CONF_TOOL := autoconf
> +USERSPACE_RCU_CONF_OPT :=
break
$(CROSS_AUTOCONF_USR) \
> + --enable-silent-rules \
> + --disable-dependency-tracking \
remove
> + --enable-shared \
> + --disable-static
> +
> +ifdef PTXCONF_USERSPACE_RCU_SMP
> +USERSPACE_RCU_CONF_OPT += --enable-smp-support
> +else
> +USERSPACE_RCU_CONF_OPT += --disable-smp-support
> +endif
ptx/endis
> +
> +#
> ----------------------------------------------------------------------------
> +# Target-Install
> +#
> ----------------------------------------------------------------------------
> +
> +$(STATEDIR)/userspace-rcu.targetinstall:
> + @$(call targetinfo)
> +
> + @$(call install_init, userspace-rcu)
> + @$(call install_fixup, userspace-rcu,PRIORITY,optional)
> + @$(call install_fixup, userspace-rcu,SECTION,base)
> + @$(call install_fixup, userspace-rcu,AUTHOR,"Juergen Beisert
> <[email protected]>")
> + @$(call install_fixup, userspace-rcu,DESCRIPTION,"Userspace RCU")
> +
> + @$(call install_lib, userspace-rcu, 0, 0, 0644, liburcu)
> + @$(call install_lib, userspace-rcu, 0, 0, 0644, liburcu-bp)
> + @$(call install_lib, userspace-rcu, 0, 0, 0644, liburcu-cds)
> + @$(call install_lib, userspace-rcu, 0, 0, 0644, liburcu-common)
> + @$(call install_lib, userspace-rcu, 0, 0, 0644, liburcu-mb)
> + @$(call install_lib, userspace-rcu, 0, 0, 0644, liburcu-qsbr)
> + @$(call install_lib, userspace-rcu, 0, 0, 0644, liburcu-signal)
> +
> + @$(call install_finish, userspace-rcu)
> +
> + @$(call touch)
> +
> +# vim: syntax=make
>
> --
> Pengutronix e.K. | Juergen Beisert |
> Linux Solutions for Science and Industry | http://www.pengutronix.de/ |
>
> --
> ptxdist mailing list
> [email protected]
>
--
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