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Embed PLPA (Portable Linux Processor Affinity) in order to support

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conflicting affinity API of different Linux kernel versions.
This commit is contained in:
Hisham Muhammad 2008-03-05 09:46:47 +00:00
parent 5ed2b85c84
commit 4df76d127b
20 changed files with 2897 additions and 3 deletions
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5
Makefile.am
View File

@ -1,4 +1,6 @@
SUBDIRS = plpa-1.1
bin_PROGRAMS = htop
dist_man_MANS = htop.1
EXTRA_DIST = $(dist_man_MANS) htop.desktop htop.png scripts/MakeHeader.py \
@ -8,7 +10,7 @@ applications_DATA = htop.desktop
pixmapdir = $(datadir)/pixmaps
pixmap_DATA = htop.png
AM_CFLAGS = -pedantic -Wall -std=c99
htop_CFLAGS = -pedantic -Wall -std=c99
AM_CPPFLAGS = -DSYSCONFDIR=\"$(sysconfdir)\"
myhtopsources = AvailableMetersPanel.c CategoriesPanel.c CheckItem.c \
@ -32,6 +34,7 @@ SUFFIXES = .h
BUILT_SOURCES = $(myhtopheaders)
htop_SOURCES = $(myhtopheaders) $(myhtopsources) config.h debug.h
htop_LDADD = $(top_builddir)/plpa-1.1/src/libplpa_included.la
profile:
$(MAKE) all CFLAGS="-pg -O2"

6
Process.c
View File

@ -27,6 +27,8 @@ in the source distribution for its full text.
#include <pwd.h>
#include <sched.h>
#include <plpa.h>
// This works only with glibc 2.1+. On earlier versions
// the behavior is similar to have a hardcoded page size.
#ifndef PAGE_SIZE
@ -198,12 +200,12 @@ bool Process_setPriority(Process* this, int priority) {
unsigned long Process_getAffinity(Process* this) {
unsigned long mask = 0;
sched_getaffinity(this->pid, sizeof(unsigned long), (cpu_set_t*) &mask);
plpa_sched_getaffinity(this->pid, sizeof(unsigned long), (plpa_cpu_set_t*) &mask);
return mask;
}
bool Process_setAffinity(Process* this, unsigned long mask) {
return (sched_setaffinity(this->pid, sizeof(unsigned long), (cpu_set_t*) &mask) == 0);
return (plpa_sched_setaffinity(this->pid, sizeof(unsigned long), (plpa_cpu_set_t*) &mask) == 0);
}
void Process_sendSignal(Process* this, int signal) {

2
Process.h
View File

@ -30,6 +30,8 @@ in the source distribution for its full text.
#include <pwd.h>
#include <sched.h>
#include <plpa.h>
// This works only with glibc 2.1+. On earlier versions
// the behavior is similar to have a hardcoded page size.
#ifndef PAGE_SIZE

13
configure.ac
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@ -9,6 +9,11 @@ AC_CONFIG_HEADER([config.h])
# Checks for programs.
AC_PROG_CC
AM_PROG_CC_C_O
AM_DISABLE_SHARED
AM_ENABLE_STATIC
AC_PROG_LIBTOOL
# Checks for libraries.
AC_CHECK_LIB([ncurses], [refresh], [], [missing_libraries="$missing_libraries libncurses"])
@ -43,11 +48,13 @@ AC_TYPE_SIGNAL
AC_FUNC_STAT
AC_CHECK_FUNCS([memmove strncasecmp strstr strdup])
save_cflags="${CFLAGS}"
CFLAGS="${CFLAGS} -std=c99"
AC_MSG_CHECKING([whether gcc -std=c99 option works])
AC_TRY_COMPILE(AC_INCLUDES_DEFAULT, [char *a; a = strdup("foo"); int i = 0; i++; // C99],
AC_MSG_RESULT([yes]),
AC_MSG_ERROR([htop is written in C99. A newer version of gcc is required.]))
CFLAGS="$save_cflags"
PROCDIR=/proc
AC_ARG_WITH(proc, [ --with-proc=DIR Location of a Linux-compatible proc filesystem (default=/proc).],
@ -66,5 +73,11 @@ fi
AC_CHECK_FILE($PROCDIR/stat,,AC_MSG_ERROR(Cannot find /proc/stat. Make sure you have a Linux-compatible /proc filesystem mounted. See the file README for help.))
AC_CHECK_FILE($PROCDIR/meminfo,,AC_MSG_ERROR(Cannot find /proc/meminfo. Make sure you have a Linux-compatible /proc filesystem mounted. See the file README for help.))
PLPA_INCLUDED(plpa-1.1)
PLPA_INIT(plpa_happy=yes, plpa_happy=no)
if test "x$plpa_happy" = xno; then
AC_MSG_ERROR([Failed to initialize PLPA.])
fi
AC_CONFIG_FILES([Makefile])
AC_OUTPUT

13
plpa-1.1/AUTHORS Normal file
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@ -0,0 +1,13 @@
PLPA Authors
============
The IDs in parenthesis are those used in Subversion commit notices.
Current Authors
---------------
Indiana University:
- Jeff Squyres (jsquyres)
Lawrence Berkeley National Lab:
- Paul Hargrove (phargrov)

57
plpa-1.1/LICENSE Normal file
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@ -0,0 +1,57 @@
Copyright (c) 2004-2006 The Trustees of Indiana University and Indiana
University Research and Technology
Corporation. All rights reserved.
Copyright (c) 2004-2005 The Regents of the University of California.
All rights reserved.
Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
Portions copyright:
Copyright (c) 2004-2005 The University of Tennessee and The University
of Tennessee Research Foundation. All rights
reserved.
Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
University of Stuttgart. All rights reserved.
Copyright (c) 2006, 2007 Advanced Micro Devices, Inc.
All rights reserved.
$COPYRIGHT$
Additional copyrights may follow
$HEADER$
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer listed
in this license in the documentation and/or other materials
provided with the distribution.
- Neither the name of the copyright holders nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
The copyright holders provide no reassurances that the source code
provided does not infringe any patent, copyright, or any other
intellectual property rights of third parties. The copyright holders
disclaim any liability to any recipient for claims brought against
recipient by any third party for infringement of that parties
intellectual property rights.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

17
plpa-1.1/Makefile.am Normal file
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@ -0,0 +1,17 @@
#
# Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
# University Research and Technology
# Corporation. All rights reserved.
# Copyright (c) 2004-2005 The Regents of the University of California.
# All rights reserved.
# Copyright (c) 2008 Cisco Systems, Inc. All rights reserved.
# $COPYRIGHT$
#
# Additional copyrights may follow
#
# $HEADER$
#
SUBDIRS = src
DIST_SUBDIRS = $(SUBDIRS)
EXTRA_DIST = README VERSION LICENSE AUTHORS plpa.m4

499
plpa-1.1/Makefile.in Normal file
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@ -0,0 +1,499 @@
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install-info-am install-man install-pdf install-pdf-am \
install-ps install-ps-am install-strip installcheck \
installcheck-am installdirs installdirs-am maintainer-clean \
maintainer-clean-generic mostlyclean mostlyclean-generic \
mostlyclean-libtool pdf pdf-am ps ps-am tags tags-recursive \
uninstall uninstall-am
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

29
plpa-1.1/README Normal file
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This is a stripped-down version of the PLPA 1.1 package, adapted to
be embedded in the htop code base. For the full PLPA package, go to
http://www.open-mpi.org/projects/plpa/. Copyright notice for PLPA
follows below.
-- Hisham Muhammad, htop author. March 2008.
===========================================================================
This is the Portable Linux Processor Affinity (PLPA) package
(pronounced "pli-pa"). It is intended for developers who wish to use
Linux processor affinity via the sched_setaffinity() and
sched_getaffinity() library calls, but don't want to wade through the
morass of 3 different APIs that have been offered through the life of
these calls in various Linux distributions and glibc versions.
Copyright (c) 2004-2006 The Trustees of Indiana University and Indiana
University Research and Technology
Corporation. All rights reserved.
Copyright (c) 2004-2005 The Regents of the University of California.
All rights reserved.
Copyright (c) 2006-2008 Cisco Systems, Inc. All rights reserved.
$COPYRIGHT$
See LICENSE file for a rollup of all copyright notices.
$HEADER$
===========================================================================

36
plpa-1.1/VERSION Normal file
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# This is the VERSION file for PLPA, describing the precise version of
# PLPA in this distribution. The various components of the version
# number below are combined to form a single version number string.
# major, minor, and release are generally combined in the form
# <major>.<minor>.<release>. If release is zero, then it is omitted.
major=1
minor=1
release=0
# greek is used for alpha or beta release tags. If it is non-empty,
# it will be appended to the version number. It does not have to be
# numeric. Common examples include a1 (alpha release 1), b1 (beta
# release 1), sc2005 (Super Computing 2005 release). The only
# requirement is that it must be entirely printable ASCII characters
# and have no white space.
greek=
# If want_svn=1, then the SVN r number will be included in the overall
# PLPA version number in some form.
want_svn=0
# If svn_r=-1, then the SVN r numbere will be obtained dynamically at
# run time, either 1) via the "svnversion" command (if this is a
# Subversion checkout) in the form "r<svn_r>", or b) with the date (if
# this is not a Subversion checkout, and the svnversion command cannot
# be used) in the form of "svn<date>". Alternatively, if svn_r is not
# -1, the value of svn_r will be directly appended to the version
# string. This happens during "make dist", for example: if the
# distribution tarball is being made from an SVN checkout, the value
# of svn_r in this file is replaced with the output of "svnversion".
svn_r=r147:149

267
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# -*- shell-script -*-
#
# Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
# University Research and Technology
# Corporation. All rights reserved.
# Copyright (c) 2004-2005 The Regents of the University of California.
# All rights reserved.
# Copyright (c) 2006-2008 Cisco Systems, Inc. All rights reserved.
# $COPYRIGHT$
#
# Additional copyrights may follow
#
# $HEADER$
#
# Main PLPA m4 macro, to be invoked by the user
#
# Expects two paramters:
# 1. What to do upon success
# 2. What to do upon failure
#
AC_DEFUN([PLPA_INIT],[
AC_REQUIRE([_PLPA_INTERNAL_SETUP])
AC_REQUIRE([AC_PROG_CC])
# Check for syscall()
AC_CHECK_FUNC([syscall], [happy=1], [happy=0])
# Look for syscall.h
if test "$happy" = 1; then
AC_CHECK_HEADER([sys/syscall.h], [happy=1], [happy=0])
fi
# Look for unistd.h
if test "$happy" = 1; then
AC_CHECK_HEADER([unistd.h], [happy=1], [happy=0])
fi
# Check for __NR_sched_setaffinity
if test "$happy" = 1; then
AC_MSG_CHECKING([for __NR_sched_setaffinity])
if test "$plpa_emulate" = "yes"; then
AC_MSG_RESULT([emulated])
AC_DEFINE([__NR_sched_setaffinity], [0], [Emulated value])
else
AC_TRY_COMPILE([#include <syscall.h>
#include <unistd.h>], [#ifndef __NR_sched_setaffinity
#error __NR_sched_setaffinity_not found!
#endif
int i = 1;],
[AC_MSG_RESULT([yes])
happy=1],
[AC_MSG_RESULT([no])
happy=0])
fi
fi
# Check for __NR_sched_getaffinity (probably overkill, but what
# the heck?)
if test "$happy" = 1; then
AC_MSG_CHECKING([for __NR_sched_getaffinity])
if test "$plpa_emulate" = "yes"; then
AC_MSG_RESULT([emulated])
AC_DEFINE([__NR_sched_getaffinity], [0], [Emulated value])
else
AC_TRY_COMPILE([#include <syscall.h>
#include <unistd.h>], [#ifndef __NR_sched_getaffinity
#error __NR_sched_getaffinity_not found!
#endif
int i = 1;],
[AC_MSG_RESULT([yes])
happy=1],
[AC_MSG_RESULT([no])
happy=0])
fi
fi
# If all was good, do the real init
AS_IF([test "$happy" = "1"],
[_PLPA_INIT($1, $2)],
[$2])
PLPA_DO_AM_CONDITIONALS
AC_CONFIG_FILES(
plpa_config_prefix[/Makefile]
plpa_config_prefix[/src/Makefile]
)
# Cleanup
unset happy
])dnl
#-----------------------------------------------------------------------
# Build PLPA as a standalone package
AC_DEFUN([PLPA_STANDALONE],[
m4_define([plpa_config_prefix],[.])
AC_REQUIRE([_PLPA_INTERNAL_SETUP])
plpa_mode=standalone
])dnl
#-----------------------------------------------------------------------
# Build PLPA as an included package
AC_DEFUN([PLPA_INCLUDED],[
m4_define([plpa_config_prefix],[$1])
AC_REQUIRE([_PLPA_INTERNAL_SETUP])
plpa_mode=included
PLPA_DISABLE_EXECUTABLES
])dnl
#-----------------------------------------------------------------------
dnl JMS: No fortran bindings yet
dnl # Set whether the fortran bindings will be built or not
dnl AC_DEFUN([PLPA_FORTRAN],[
dnl AC_REQUIRE([_PLPA_INTERNAL_SETUP])
dnl
dnl # Need [] around entire following line to escape m4 properly
dnl [plpa_tmp=`echo $1 | tr '[:upper:]' '[:lower:]'`]
dnl if test "$1" = "0" -o "$1" = "n"; then
dnl plpa_fortran=no
dnl elif test "$1" = "1" -o "$1" = "y"; then
dnl plpa_fortran=yes
dnl else
dnl AC_MSG_WARN([Did not understand PLPA_FORTRAN argument ($1) -- ignored])
dnl fi
dnl ])dnl
#-----------------------------------------------------------------------
# Disable building the executables
AC_DEFUN([PLPA_DISABLE_EXECUTABLES],[
AC_REQUIRE([_PLPA_INTERNAL_SETUP])
plpa_executables=no
])dnl
#-----------------------------------------------------------------------
# Specify the symbol prefix
AC_DEFUN([PLPA_SET_SYMBOL_PREFIX],[
AC_REQUIRE([_PLPA_INTERNAL_SETUP])
plpa_symbol_prefix_value=$1
])dnl
#-----------------------------------------------------------------------
# Internals
AC_DEFUN([_PLPA_INTERNAL_SETUP],[
AC_ARG_ENABLE([emulate],
AC_HELP_STRING([--enable-emulate],
[Emulate __NR_sched_setaffinity and __NR_sched_getaffinity, to allow building on non-Linux systems (for testing)]))
if test "$enable_emulate" = "yes"; then
plpa_emulate=yes
else
plpa_emulate=no
fi
# Included mode, or standalone?
AC_ARG_ENABLE([included-mode],
AC_HELP_STRING([--enable-included-mode],
[Using --enable-included-mode puts the PLPA into "included" mode. The default is --disable-included-mode, meaning that the PLPA is in "standalone" mode.]))
if test "$enable_included_mode" = "yes"; then
plpa_mode=included
else
plpa_mode=standalone
fi
dnl JMS: No fortran bindings yet
dnl # Fortran bindings, or no?
dnl AC_ARG_ENABLE([fortran],
dnl AC_HELP_STRING([--disable-fortran],
dnl [Using --disable-fortran disables building the Fortran PLPA API bindings]))
dnl if test "$enable_fortran" = "yes" -o "$enable_fortran" = ""; then
dnl plpa_fortran=yes
dnl else
dnl plpa_fortran=no
dnl fi
# Build and install the executables or no?
AC_ARG_ENABLE([executables],
AC_HELP_STRING([--disable-executables],
[Using --disable-executables disables building and installing the PLPA executables]))
if test "$enable_executables" = "yes" -o "$enable_executables" = ""; then
plpa_executables=yes
else
plpa_executables=no
fi
# Change the symbol prefix?
AC_ARG_WITH([plpa-symbol-prefix],
AC_HELP_STRING([--with-plpa-symbol-prefix=STRING],
[STRING can be any valid C symbol name. It will be prefixed to all public PLPA symbols. Default: "plpa_"]))
if test "$with_plpa_symbol_prefix" = ""; then
plpa_symbol_prefix_value=plpa_
else
plpa_symbol_prefix_value=$with_plpa_symbol_prefix
fi
])dnl
#-----------------------------------------------------------------------
# Internals for PLPA_INIT
AC_DEFUN([_PLPA_INIT],[
AC_REQUIRE([_PLPA_INTERNAL_SETUP])
# Are we building as standalone or included?
AC_MSG_CHECKING([for PLPA building mode])
AC_MSG_RESULT([$plpa_mode])
# We need to set a path for header, etc files depending on whether
# we're standalone or included. this is taken care of by PLPA_INCLUDED.
AC_MSG_CHECKING([for PLPA config prefix])
AC_MSG_RESULT(plpa_config_prefix)
# Note that plpa_config.h *MUST* be listed first so that it
# becomes the "main" config header file. Any AM_CONFIG_HEADERs
# after that (plpa.h) will only have selective #defines replaced,
# not the entire file.
AM_CONFIG_HEADER(plpa_config_prefix[/src/plpa_config.h])
AM_CONFIG_HEADER(plpa_config_prefix[/src/plpa.h])
# What prefix are we using?
AC_MSG_CHECKING([for PLPA symbol prefix])
AC_DEFINE_UNQUOTED(PLPA_SYM_PREFIX, [$plpa_symbol_prefix_value],
[The PLPA symbol prefix])
# Ensure to [] escape the whole next line so that we can get the
# proper tr tokens
[plpa_symbol_prefix_value_caps="`echo $plpa_symbol_prefix_value | tr '[:lower:]' '[:upper:]'`"]
AC_DEFINE_UNQUOTED(PLPA_SYM_PREFIX_CAPS, [$plpa_symbol_prefix_value_caps],
[The PLPA symbol prefix in all caps])
AC_MSG_RESULT([$plpa_symbol_prefix_value])
dnl JMS: No fortran bindings yet
dnl # Check for fortran
dnl AC_MSG_CHECKING([whether to build PLPA Fortran API])
dnl AC_MSG_RESULT([$plpa_fortran])
# Check whether to build the exectuables or not
AC_MSG_CHECKING([whether to build PLPA executables])
AC_MSG_RESULT([$plpa_executables])
# If we're building executables, we need some things for plpa-taskset
if test "$plpa_executables" = "yes"; then
AC_C_INLINE
fi
# Success
$1
])dnl
#-----------------------------------------------------------------------
# This must be a standalone routine so that it can be called both by
# PLPA_INIT and an external caller (if PLPA_INIT is not invoked).
AC_DEFUN([PLPA_DO_AM_CONDITIONALS],[
if test "$plpa_did_am_conditionals" != "yes"; then
AM_CONDITIONAL([PLPA_BUILD_STANDALONE], [test "$plpa_mode" = "standalone"])
dnl JMS: No fortran bindings yet
dnl AM_CONDITIONAL(PLPA_BUILD_FORTRAN, [test "$plpa_fortran" = "yes"])
AM_CONDITIONAL(PLPA_BUILD_EXECUTABLES, [test "$plpa_executables" = "yes"])
fi
plpa_did_am_conditionals=yes
])dnl

49
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#
# Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
# University Research and Technology
# Corporation. All rights reserved.
# Copyright (c) 2004-2005 The University of Tennessee and The University
# of Tennessee Research Foundation. All rights
# reserved.
# Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
# University of Stuttgart. All rights reserved.
# Copyright (c) 2004-2005 The Regents of the University of California.
# All rights reserved.
# Copyright (c) 2006-2007 Cisco Systems, Inc. All rights reserved.
# $COPYRIGHT$
#
# Additional copyrights may follow
#
# $HEADER$
#
# Defaults
lib_LTLIBRARIES =
noinst_LTLIBRARIES =
nodist_include_HEADERS =
nodist_noinst_HEADERS =
# Note that this file is generated by configure, so we don't want to
# ship it in the tarball. Hence the "nodist_" prefixes to the HEADERS
# macros, below.
public_headers = plpa.h
# See which mode we're building in
if PLPA_BUILD_STANDALONE
lib_LTLIBRARIES += libplpa.la
nodist_include_HEADERS += $(public_headers)
else
noinst_LTLIBRARIES += libplpa_included.la
nodist_noinst_HEADERS += $(public_headers)
endif
# The sources
plpa_sources = \
plpa_internal.h \
plpa_api_probe.c \
plpa_dispatch.c \
plpa_runtime.c \
plpa_map.c
libplpa_la_SOURCES = $(plpa_sources)
libplpa_included_la_SOURCES = $(plpa_sources)

579
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# Makefile.in generated by automake 1.10 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
#
# Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
# University Research and Technology
# Corporation. All rights reserved.
# Copyright (c) 2004-2005 The University of Tennessee and The University
# of Tennessee Research Foundation. All rights
# reserved.
# Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
# University of Stuttgart. All rights reserved.
# Copyright (c) 2004-2005 The Regents of the University of California.
# All rights reserved.
# Copyright (c) 2006-2007 Cisco Systems, Inc. All rights reserved.
# $COPYRIGHT$
#
# Additional copyrights may follow
#
# $HEADER$
#
VPATH = @srcdir@
pkgdatadir = $(datadir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
install_sh_DATA = $(install_sh) -c -m 644
install_sh_PROGRAM = $(install_sh) -c
install_sh_SCRIPT = $(install_sh) -c
INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
build_triplet = @build@
host_triplet = @host@
# See which mode we're building in
@PLPA_BUILD_STANDALONE_TRUE@am__append_1 = libplpa.la
@PLPA_BUILD_STANDALONE_TRUE@am__append_2 = $(public_headers)
@PLPA_BUILD_STANDALONE_FALSE@am__append_3 = libplpa_included.la
@PLPA_BUILD_STANDALONE_FALSE@am__append_4 = $(public_headers)
subdir = plpa-1.1/src
DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in \
$(srcdir)/plpa.h.in $(srcdir)/plpa_config.h.in
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/acinclude.m4 \
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am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
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mkinstalldirs = $(install_sh) -d
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CONFIG_CLEAN_FILES =
am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
am__vpath_adj = case $$p in \
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libplpa_la_LIBADD =
am__objects_1 = plpa_api_probe.lo plpa_dispatch.lo plpa_runtime.lo \
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am_libplpa_la_OBJECTS = $(am__objects_1)
libplpa_la_OBJECTS = $(am_libplpa_la_OBJECTS)
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libplpa_included_la_LIBADD =
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am__depfiles_maybe = depfiles
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$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
CCLD = $(CC)
LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
$(LDFLAGS) -o $@
SOURCES = $(libplpa_la_SOURCES) $(libplpa_included_la_SOURCES)
DIST_SOURCES = $(libplpa_la_SOURCES) $(libplpa_included_la_SOURCES)
nodist_includeHEADERS_INSTALL = $(INSTALL_HEADER)
HEADERS = $(nodist_include_HEADERS) $(nodist_noinst_HEADERS)
ETAGS = etags
CTAGS = ctags
DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
ACLOCAL = @ACLOCAL@
AMTAR = @AMTAR@
AR = @AR@
AUTOCONF = @AUTOCONF@
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CC = @CC@
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CFLAGS = @CFLAGS@
CPP = @CPP@
CPPFLAGS = @CPPFLAGS@
CXX = @CXX@
CXXCPP = @CXXCPP@
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CXXFLAGS = @CXXFLAGS@
CYGPATH_W = @CYGPATH_W@
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DEPDIR = @DEPDIR@
ECHO = @ECHO@
ECHO_C = @ECHO_C@
ECHO_N = @ECHO_N@
ECHO_T = @ECHO_T@
EGREP = @EGREP@
EXEEXT = @EXEEXT@
F77 = @F77@
FFLAGS = @FFLAGS@
GREP = @GREP@
INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
LDFLAGS = @LDFLAGS@
LIBOBJS = @LIBOBJS@
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LIBTOOL = @LIBTOOL@
LN_S = @LN_S@
LTLIBOBJS = @LTLIBOBJS@
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MKDIR_P = @MKDIR_P@
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PACKAGE = @PACKAGE@
PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
PACKAGE_NAME = @PACKAGE_NAME@
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SET_MAKE = @SET_MAKE@
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STRIP = @STRIP@
VERSION = @VERSION@
abs_builddir = @abs_builddir@
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abs_top_srcdir = @abs_top_srcdir@
ac_ct_CC = @ac_ct_CC@
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ac_ct_F77 = @ac_ct_F77@
am__include = @am__include@
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builddir = @builddir@
datadir = @datadir@
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docdir = @docdir@
dvidir = @dvidir@
exec_prefix = @exec_prefix@
host = @host@
host_alias = @host_alias@
host_cpu = @host_cpu@
host_os = @host_os@
host_vendor = @host_vendor@
htmldir = @htmldir@
includedir = @includedir@
infodir = @infodir@
install_sh = @install_sh@
libdir = @libdir@
libexecdir = @libexecdir@
localedir = @localedir@
localstatedir = @localstatedir@
mandir = @mandir@
mkdir_p = @mkdir_p@
oldincludedir = @oldincludedir@
pdfdir = @pdfdir@
prefix = @prefix@
program_transform_name = @program_transform_name@
psdir = @psdir@
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srcdir = @srcdir@
sysconfdir = @sysconfdir@
target_alias = @target_alias@
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# Defaults
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noinst_LTLIBRARIES = $(am__append_3)
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# Note that this file is generated by configure, so we don't want to
# ship it in the tarball. Hence the "nodist_" prefixes to the HEADERS
# macros, below.
public_headers = plpa.h
# The sources
plpa_sources = \
plpa_internal.h \
plpa_api_probe.c \
plpa_dispatch.c \
plpa_runtime.c \
plpa_map.c
libplpa_la_SOURCES = $(plpa_sources)
libplpa_included_la_SOURCES = $(plpa_sources)
all: plpa_config.h plpa.h
$(MAKE) $(AM_MAKEFLAGS) all-am
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plpa-1.1/src/plpa.h.in Normal file
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/* -*- c -*-
*
* Copyright (c) 2004-2005 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006-2008 Cisco, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/*
* Some notes about the declarations and definitions in this file:
*
* This file is a mix of internal and public declarations.
* Applications are warned against using the internal types; they are
* subject to change with no warning.
*
* The PLPA_NAME() and PLPA_NAME_CAPS() macros are used for prefixing
* the PLPA type names, enum names, and symbol names when embedding
* PLPA. When not embedding, the default prefix is "plpa_" (or
* "PLPA_" when using PLPA_NAME_CAPS()). Hence, if you see a
* declaration like this:
*
* int PLPA_NAME(foo)(void);
*
* It's a function named plpa_foo() that returns an int and takes no
* arguments when building PLPA as a standalone library. It's a
* function with a different prefix than "plpa_" when the
* --enable-included-mode and --with-plpa-symbol-prefix options are
* supplied to PLPA's configure script.
*/
#ifndef PLPA_H
#define PLPA_H
/* Absolutely must not include <sched.h> here or it will generate
conflicts. */
/* For memset() */
#include <string.h>
/* For pid_t and size_t */
#include <sys/types.h>
/***************************************************************************
* Internal types
***************************************************************************/
/* If we're building PLPA itself, <plpa_config.h> will have already
been included. But <plpa_config.h> is a private header file; it is
not installed into $includedir. Hence, applications including
<plpa.h> will not have included <plpa_config.h> (this is by
design). So include just enough information here to allow us to
continue. */
#ifndef PLPA_CONFIG_H
/* The PLPA symbol prefix */
#define PLPA_SYM_PREFIX plpa_
/* The PLPA symbol prefix in all caps */
#define PLPA_SYM_PREFIX_CAPS PLPA_
#endif
/* Preprocessors are fun -- the double inderection is unfortunately
necessary. */
#define PLPA_MUNGE_NAME(a, b) PLPA_MUNGE_NAME2(a, b)
#define PLPA_MUNGE_NAME2(a, b) a ## b
#define PLPA_NAME(name) PLPA_MUNGE_NAME(PLPA_SYM_PREFIX, name)
#define PLPA_NAME_CAPS(name) PLPA_MUNGE_NAME(PLPA_SYM_PREFIX_CAPS, name)
/***************************************************************************
* Public type
***************************************************************************/
/* Values that can be returned from plpa_api_probe() */
typedef enum {
/* Sentinel value */
PLPA_NAME_CAPS(PROBE_UNSET),
/* sched_setaffinity syscall available */
PLPA_NAME_CAPS(PROBE_OK),
/* syscall unavailable/unimplemented */
PLPA_NAME_CAPS(PROBE_NOT_SUPPORTED),
/* we experienced some strange failure that the user should report */
PLPA_NAME_CAPS(PROBE_UNKNOWN)
} PLPA_NAME(api_type_t);
/***************************************************************************
* Internal types
***************************************************************************/
/* Internal PLPA bitmask type. This type should not be used by
external applications! */
typedef unsigned long int PLPA_NAME(bitmask_t);
#define PLPA_BITMASK_T_NUM_BITS (sizeof(PLPA_NAME(bitmask_t)) * 8)
#define PLPA_BITMASK_CPU_MAX 1024
#define PLPA_BITMASK_NUM_ELEMENTS (PLPA_BITMASK_CPU_MAX / PLPA_BITMASK_T_NUM_BITS)
/***************************************************************************
* Public type
***************************************************************************/
/* Public type for the PLPA cpu set. */
typedef struct { PLPA_NAME(bitmask_t) bitmask[PLPA_BITMASK_NUM_ELEMENTS]; } PLPA_NAME(cpu_set_t);
/***************************************************************************
* Internal macros
***************************************************************************/
/* Internal macro for identifying the byte in a bitmask array. This
macro should not be used by external applications! */
#define PLPA_CPU_BYTE(num) ((num) / PLPA_BITMASK_T_NUM_BITS)
/* Internal macro for identifying the bit in a bitmask array. This
macro should not be used by external applications! */
#define PLPA_CPU_BIT(num) ((num) % PLPA_BITMASK_T_NUM_BITS)
/***************************************************************************
* Public macros
***************************************************************************/
/* Public macro to zero out a PLPA cpu set (analogous to the FD_ZERO()
macro; see select(2)). */
#define PLPA_CPU_ZERO(cpuset) \
memset((cpuset), 0, sizeof(PLPA_NAME(cpu_set_t)))
/* Public macro to set a bit in a PLPA cpu set (analogous to the
FD_SET() macro; see select(2)). */
#define PLPA_CPU_SET(num, cpuset) \
(cpuset)->bitmask[PLPA_CPU_BYTE(num)] |= ((PLPA_NAME(bitmask_t))1 << PLPA_CPU_BIT(num))
/* Public macro to clear a bit in a PLPA cpu set (analogous to the
FD_CLR() macro; see select(2)). */
#define PLPA_CPU_CLR(num, cpuset) \
(cpuset)->bitmask[PLPA_CPU_BYTE(num)] &= ~((PLPA_NAME(bitmask_t))1 << PLPA_CPU_BIT(num))
/* Public macro to test if a bit is set in a PLPA cpu set (analogous
to the FD_ISSET() macro; see select(2)). */
#define PLPA_CPU_ISSET(num, cpuset) \
(0 != (((cpuset)->bitmask[PLPA_CPU_BYTE(num)]) & ((PLPA_NAME(bitmask_t))1 << PLPA_CPU_BIT(num))))
/***************************************************************************
* Public functions
***************************************************************************/
/* Setup PLPA internals. This function is optional; it will be
automatically invoked by all the other API functions if you do not
invoke it explicitly. Returns 0 upon success. */
int PLPA_NAME(init)(void);
/* Check what API is on this machine. If api_type returns
PLPA_PROBE_OK, then PLPA can function properly on this machine.
Returns 0 upon success. */
int PLPA_NAME(api_probe)(PLPA_NAME(api_type_t) *api_type);
/* Set processor affinity. Use the PLPA_CPU_* macros to set the
cpuset value. The same rules and restrictions about pid apply as
they do for the sched_setaffinity(2) system call. Returns 0 upon
success. */
int PLPA_NAME(sched_setaffinity)(pid_t pid, size_t cpusetsize,
const PLPA_NAME(cpu_set_t) *cpuset);
/* Get processor affinity. Use the PLPA_CPU_* macros to analyze the
returned value of cpuset. The same rules and restrictions about
pid apply as they do for the sched_getaffinity(2) system call.
Returns 0 upon success. */
int PLPA_NAME(sched_getaffinity)(pid_t pid, size_t cpusetsize,
PLPA_NAME(cpu_set_t) *cpuset);
/* Return whether topology information is available (i.e.,
plpa_map_to_*, plpa_max_*). The topology functions will be
available if supported == 1 and the function returns 0. */
int PLPA_NAME(have_topology_information)(int *supported);
/* Map (socket,core) tuple to virtual processor ID. processor_id is
then suitable for use with the PLPA_CPU_* macros, probably leading
to a call to plpa_sched_setaffinity(). Returns 0 upon success. */
int PLPA_NAME(map_to_processor_id)(int socket, int core, int *processor_id);
/* Map processor_id to (socket,core) tuple. The processor_id input is
usually obtained from the return from the plpa_sched_getaffinity()
call, using PLPA_CPU_ISSET to find individual bits in the map that
were set/unset. plpa_map_to_socket_core() can map the bit indexes
to a socket/core tuple. Returns 0 upon success. */
int PLPA_NAME(map_to_socket_core)(int processor_id, int *socket, int *core);
/* Return the max processor ID. Returns both the number of processors
(cores) in a system and the maximum Linux virtual processor ID
(because it may be higher than the number of processors if there
are "holes" in the available Linux virtual processor IDs). Returns
0 upon success. */
int PLPA_NAME(get_processor_info)(int *num_processors, int *max_processor_id);
/* Returns both the number of sockets in the system and the maximum
socket ID number (in case there are "holes" in the list of available
socket IDs). Returns 0 upon sucess. */
int PLPA_NAME(get_socket_info)(int *num_sockets, int *max_socket_id);
/* Return both the number of cores and the max code ID for a given
socket (in case there are "holes" in the list of available core
IDs). Returns 0 upon success. */
int PLPA_NAME(get_core_info)(int socket, int *num_cores, int *max_core_id);
/* Shut down PLPA. This function releases resources used by the PLPA.
It should be the last PLPA function invoked, or can be used to
forcibly cause PLPA to dump its topology cache and re-analyze the
underlying system the next time another PLPA function is called.
Specifically: it is safe to call plpa_init() (or any other PLPA
function) again after plpa_finalized(). Returns 0 upon success. */
int PLPA_NAME(finalize)(void);
#endif /* PLPA_H */

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/* -*- c -*-
*
* Copyright (c) 2004-2005 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2007-2008 Cisco, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "plpa_config.h"
#include "plpa.h"
#include "plpa_internal.h"
#include <errno.h>
#include <sys/syscall.h>
#include <unistd.h>
/* Cache, just to make things a little more efficient */
static PLPA_NAME(api_type_t) cache = PLPA_NAME_CAPS(PROBE_UNSET);
/* The len value we find - not in public header, but used by the lib */
size_t PLPA_NAME(len) = 0;
int PLPA_NAME(api_probe_init)(void)
{
PLPA_NAME(cpu_set_t) mask;
int rc;
size_t len;
for (len = sizeof(mask); len != 0; len >>= 1) {
rc = syscall(__NR_sched_getaffinity, 0, len, &mask);
if (rc >= 0) {
/* OK, kernel is happy with a get(). Validate w/ a set(). */
/* Note that kernel may have told us the "proper" size */
size_t tmp = (0 != rc) ? ((size_t) rc) : len;
/* Pass mask=NULL, expect errno==EFAULT if tmp was OK
as a length */
rc = syscall(__NR_sched_setaffinity, 0, tmp, NULL);
if ((rc < 0) && (errno == EFAULT)) {
cache = PLPA_NAME_CAPS(PROBE_OK);
PLPA_NAME(len) = tmp;
rc = 0;
break;
}
}
if (errno == ENOSYS) {
break; /* No point in looping */
}
}
if (rc >= 0) {
/* OK */
} else if (errno == ENOSYS) {
/* Kernel returns ENOSYS because there is no support for
processor affinity */
cache = PLPA_NAME_CAPS(PROBE_NOT_SUPPORTED);
} else {
/* Unknown! */
cache = PLPA_NAME_CAPS(PROBE_UNKNOWN);
}
return 0;
}
int PLPA_NAME(api_probe)(PLPA_NAME(api_type_t) *api_type)
{
int ret;
/* Check to see that we're initialized */
if (!PLPA_NAME(initialized)) {
if (0 != (ret = PLPA_NAME(init)())) {
return ret;
}
}
/* Check for bozo arguments */
if (NULL == api_type) {
return EINVAL;
}
/* All done */
*api_type = cache;
return 0;
}

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/* ./src/libplpa/plpa_config.h.in. Generated from configure.ac by autoheader. */
/* -*- c -*-
*
* Copyright (c) 2004-2005 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006-2008 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef PLPA_CONFIG_H
#define PLPA_CONFIG_H
/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#undef LT_OBJDIR
/* Define to 1 if your C compiler doesn't accept -c and -o together. */
#undef NO_MINUS_C_MINUS_O
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* Whether we're in debugging mode or not */
#undef PLPA_DEBUG
/* Major version of PLPA */
#undef PLPA_MAJOR_VERSION
/* Minor version of PLPA */
#undef PLPA_MINOR_VERSION
/* Release version of PLPA */
#undef PLPA_RELEASE_VERSION
/* The PLPA symbol prefix */
#undef PLPA_SYM_PREFIX
/* The PLPA symbol prefix in all caps */
#undef PLPA_SYM_PREFIX_CAPS
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Define to 1 if `lex' declares `yytext' as a `char *' by default, not a
`char[]'. */
#undef YYTEXT_POINTER
/* Emulated value */
#undef __NR_sched_getaffinity
/* Emulated value */
#undef __NR_sched_setaffinity
/* Define to `__inline__' or `__inline' if that's what the C compiler
calls it, or to nothing if 'inline' is not supported under any name. */
#ifndef __cplusplus
#undef inline
#endif
#endif /* PLPA_CONFIG_H */

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/* -*- c -*-
*
* Copyright (c) 2004-2006 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2007-2008 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "plpa_config.h"
#include "plpa.h"
#include "plpa_internal.h"
#include <errno.h>
#include <sys/syscall.h>
#include <unistd.h>
/**
* Call the kernel's setaffinity, massaging the user's input
* parameters as necessary
*/
int PLPA_NAME(sched_setaffinity)(pid_t pid, size_t cpusetsize,
const PLPA_NAME(cpu_set_t) *cpuset)
{
int ret;
size_t i;
PLPA_NAME(cpu_set_t) tmp;
PLPA_NAME(api_type_t) api;
/* Check to see that we're initialized */
if (!PLPA_NAME(initialized)) {
if (0 != (ret = PLPA_NAME(init)())) {
return ret;
}
}
/* Check for bozo arguments */
if (NULL == cpuset) {
return EINVAL;
}
/* Probe the API type */
if (0 != (ret = PLPA_NAME(api_probe)(&api))) {
return ret;
}
switch (api) {
case PLPA_NAME_CAPS(PROBE_OK):
/* This shouldn't happen, but check anyway */
if (cpusetsize > sizeof(*cpuset)) {
return EINVAL;
}
/* If the user-supplied bitmask is smaller than what the
kernel wants, zero out a temporary buffer of the size that
the kernel wants and copy the user-supplied bitmask to the
lower part of the temporary buffer. This could be done
more efficiently, but we're looking for clarity/simplicity
of code here -- this is not intended to be
performance-critical. */
if (cpusetsize < PLPA_NAME(len)) {
memset(&tmp, 0, sizeof(tmp));
for (i = 0; i < cpusetsize * 8; ++i) {
if (PLPA_CPU_ISSET(i, cpuset)) {
PLPA_CPU_SET(i, &tmp);
}
}
}
/* If the user-supplied bitmask is larger than what the kernel
will accept, scan it and see if there are any set bits in
the part larger than what the kernel will accept. If so,
return EINVAL. Otherwise, copy the part that the kernel
will accept into a temporary and use that. Again,
efficinency is not the issue of this code -- clarity is. */
else if (cpusetsize > PLPA_NAME(len)) {
for (i = PLPA_NAME(len) * 8; i < cpusetsize * 8; ++i) {
if (PLPA_CPU_ISSET(i, cpuset)) {
return EINVAL;
}
}
/* No upper-level bits are set, so now copy over the bits
that the kernel will look at */
memset(&tmp, 0, sizeof(tmp));
for (i = 0; i < PLPA_NAME(len) * 8; ++i) {
if (PLPA_CPU_ISSET(i, cpuset)) {
PLPA_CPU_SET(i, &tmp);
}
}
}
/* Otherwise, the user supplied a buffer that is exactly the
right size. Just for clarity of code, copy the user's
buffer into the temporary and use that. */
else {
memcpy(&tmp, cpuset, cpusetsize);
}
/* Now do the syscall */
ret = syscall(__NR_sched_setaffinity, pid, PLPA_NAME(len), &tmp);
/* Return 0 upon success. According to
http://www.open-mpi.org/community/lists/plpa-users/2006/02/0016.php,
all the kernel implementations return >= 0 upon success. */
if (ret >= 0) {
return 0;
} else {
return ret;
}
break;
case PLPA_NAME_CAPS(PROBE_NOT_SUPPORTED):
/* Process affinity not supported here */
return ENOSYS;
break;
default:
/* Something went wrong */
/* JMS: would be good to have something other than EINVAL here
-- suggestions? */
return EINVAL;
break;
}
}
/**
* Call the kernel's getaffinity, massaging the user's input
* parameters as necessary
*/
int PLPA_NAME(sched_getaffinity)(pid_t pid, size_t cpusetsize,
PLPA_NAME(cpu_set_t) *cpuset)
{
int ret;
PLPA_NAME(api_type_t) api;
/* Check to see that we're initialized */
if (!PLPA_NAME(initialized)) {
if (0 != (ret = PLPA_NAME(init)())) {
return ret;
}
}
/* Check for bozo arguments */
if (NULL == cpuset) {
return EINVAL;
}
/* Probe the API type */
if (0 != (ret = PLPA_NAME(api_probe)(&api))) {
return ret;
}
switch (api) {
case PLPA_NAME_CAPS(PROBE_OK):
/* This shouldn't happen, but check anyway */
if (PLPA_NAME(len) > sizeof(*cpuset)) {
return EINVAL;
}
/* If the user supplied a buffer that is too small, then don't
even bother */
if (cpusetsize < PLPA_NAME(len)) {
return EINVAL;
}
/* Now we know that the user's buffer is >= the size required
by the kernel. If it's >, then zero it out so that the
bits at the top are cleared (since they won't be set by the
kernel) */
if (cpusetsize > PLPA_NAME(len)) {
memset(cpuset, 0, cpusetsize);
}
/* Now do the syscall */
ret = syscall(__NR_sched_getaffinity, pid, PLPA_NAME(len), cpuset);
/* Return 0 upon success. According to
http://www.open-mpi.org/community/lists/plpa-users/2006/02/0016.php,
all the kernel implementations return >= 0 upon success. */
if (ret >= 0) {
return 0;
} else {
return ret;
}
break;
case PLPA_NAME_CAPS(PROBE_NOT_SUPPORTED):
/* Process affinity not supported here */
return ENOSYS;
break;
default:
/* Something went wrong */
return EINVAL;
break;
}
}

36
plpa-1.1/src/plpa_internal.h Normal file
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/* -*- c -*-
*
* Copyright (c) 2004-2005 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef PLPA_INTERNAL_H
#define PLPA_INTERNAL_H
#include <plpa.h>
/* Have we initialized yet? */
extern int PLPA_NAME(initialized);
/* Cached size of the affinity buffers that the kernel expects */
extern size_t PLPA_NAME(len);
/* Setup topology information */
int PLPA_NAME(map_init)(void);
/* Setup API type */
int PLPA_NAME(api_probe_init)(void);
/* Free all mapping memory */
void PLPA_NAME(map_finalize)(void);
#endif /* PLPA_INTERNAL_H */

602
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/*
* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
*
* Portions of this file originally contributed by Advanced Micro
* Devices, Inc. See notice below.
*/
/* ============================================================
License Agreement
Copyright (c) 2006, 2007 Advanced Micro Devices, Inc.
All rights reserved.
Redistribution and use in any form of this material and any product
thereof including software in source or binary forms, along with any
related documentation, with or without modification ("this material"),
is permitted provided that the following conditions are met:
+ Redistributions of source code of any software must retain the above
copyright notice and all terms of this license as part of the code.
+ Redistributions in binary form of any software must reproduce the
above copyright notice and all terms of this license in any related
documentation and/or other materials.
+ Neither the names nor trademarks of Advanced Micro Devices, Inc. or
any copyright holders or contributors may be used to endorse or
promote products derived from this material without specific prior
written permission.
+ Notice about U.S. Government restricted rights: This material is
provided with "RESTRICTED RIGHTS." Use, duplication or disclosure by
the U.S. Government is subject to the full extent of restrictions set
forth in FAR52.227 and DFARS252.227 et seq., or any successor or
applicable regulations. Use of this material by the U.S. Government
constitutes acknowledgment of the proprietary rights of Advanced Micro
Devices, Inc.
and any copyright holders and contributors.
+ In no event shall anyone redistributing or accessing or using this
material commence or participate in any arbitration or legal action
relating to this material against Advanced Micro Devices, Inc. or any
copyright holders or contributors. The foregoing shall survive any
expiration or termination of this license or any agreement or access
or use related to this material.
+ ANY BREACH OF ANY TERM OF THIS LICENSE SHALL RESULT IN THE IMMEDIATE
REVOCATION OF ALL RIGHTS TO REDISTRIBUTE, ACCESS OR USE THIS MATERIAL.
THIS MATERIAL IS PROVIDED BY ADVANCED MICRO DEVICES, INC. AND ANY
COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" IN ITS CURRENT CONDITION
AND WITHOUT ANY REPRESENTATIONS, GUARANTEE, OR WARRANTY OF ANY KIND OR
IN ANY WAY RELATED TO SUPPORT, INDEMNITY, ERROR FREE OR UNINTERRUPTED
OPERATION, OR THAT IT IS FREE FROM DEFECTS OR VIRUSES. ALL
OBLIGATIONS ARE HEREBY DISCLAIMED - WHETHER EXPRESS, IMPLIED, OR
STATUTORY - INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY,
COMPLETENESS, OPERABILITY, QUALITY OF SERVICE, OR NON-INFRINGEMENT. IN
NO EVENT SHALL ADVANCED MICRO DEVICES, INC. OR ANY COPYRIGHT HOLDERS
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, PUNITIVE, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
USE, REVENUE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED OR BASED ON ANY THEORY OF LIABILITY ARISING IN ANY WAY RELATED
TO THIS MATERIAL, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
THE ENTIRE AND AGGREGATE LIABILITY OF ADVANCED MICRO DEVICES, INC. AND
ANY COPYRIGHT HOLDERS AND CONTRIBUTORS SHALL NOT EXCEED TEN DOLLARS
(US $10.00). ANYONE REDISTRIBUTING OR ACCESSING OR USING THIS MATERIAL
ACCEPTS THIS ALLOCATION OF RISK AND AGREES TO RELEASE ADVANCED MICRO
DEVICES, INC. AND ANY COPYRIGHT HOLDERS AND CONTRIBUTORS FROM ANY AND
ALL LIABILITIES, OBLIGATIONS, CLAIMS, OR DEMANDS IN EXCESS OF TEN
DOLLARS (US $10.00). THE FOREGOING ARE ESSENTIAL TERMS OF THIS LICENSE
AND, IF ANY OF THESE TERMS ARE CONSTRUED AS UNENFORCEABLE, FAIL IN
ESSENTIAL PURPOSE, OR BECOME VOID OR DETRIMENTAL TO ADVANCED MICRO
DEVICES, INC. OR ANY COPYRIGHT HOLDERS OR CONTRIBUTORS FOR ANY REASON,
THEN ALL RIGHTS TO REDISTRIBUTE, ACCESS OR USE THIS MATERIAL SHALL
TERMINATE IMMEDIATELY. MOREOVER, THE FOREGOING SHALL SURVIVE ANY
EXPIRATION OR TERMINATION OF THIS LICENSE OR ANY AGREEMENT OR ACCESS
OR USE RELATED TO THIS MATERIAL.
NOTICE IS HEREBY PROVIDED, AND BY REDISTRIBUTING OR ACCESSING OR USING
THIS MATERIAL SUCH NOTICE IS ACKNOWLEDGED, THAT THIS MATERIAL MAY BE
SUBJECT TO RESTRICTIONS UNDER THE LAWS AND REGULATIONS OF THE UNITED
STATES OR OTHER COUNTRIES, WHICH INCLUDE BUT ARE NOT LIMITED TO, U.S.
EXPORT CONTROL LAWS SUCH AS THE EXPORT ADMINISTRATION REGULATIONS AND
NATIONAL SECURITY CONTROLS AS DEFINED THEREUNDER, AS WELL AS STATE
DEPARTMENT CONTROLS UNDER THE U.S. MUNITIONS LIST. THIS MATERIAL MAY
NOT BE USED, RELEASED, TRANSFERRED, IMPORTED, EXPORTED AND/OR RE-
EXPORTED IN ANY MANNER PROHIBITED UNDER ANY APPLICABLE LAWS, INCLUDING
U.S. EXPORT CONTROL LAWS REGARDING SPECIFICALLY DESIGNATED PERSONS,
COUNTRIES AND NATIONALS OF COUNTRIES SUBJECT TO NATIONAL SECURITY
CONTROLS.
MOREOVER,
THE FOREGOING SHALL SURVIVE ANY EXPIRATION OR TERMINATION OF ANY
LICENSE OR AGREEMENT OR ACCESS OR USE RELATED TO THIS MATERIAL.
This license forms the entire agreement regarding the subject matter
hereof and supersedes all proposals and prior discussions and writings
between the parties with respect thereto. This license does not affect
any ownership, rights, title, or interest in, or relating to, this
material. No terms of this license can be modified or waived, and no
breach of this license can be excused, unless done so in a writing
signed by all affected parties. Each term of this license is
separately enforceable. If any term of this license is determined to
be or becomes unenforceable or illegal, such term shall be reformed to
the minimum extent necessary in order for this license to remain in
effect in accordance with its terms as modified by such reformation.
This license shall be governed by and construed in accordance with the
laws of the State of Texas without regard to rules on conflicts of law
of any state or jurisdiction or the United Nations Convention on the
International Sale of Goods. All disputes arising out of this license
shall be subject to the jurisdiction of the federal and state courts
in Austin, Texas, and all defenses are hereby waived concerning
personal jurisdiction and venue of these courts.
============================================================ */
#include "plpa_config.h"
#include "plpa.h"
#include "plpa_internal.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <limits.h>
#include <errno.h>
#include <stdlib.h>
typedef struct tuple_t_ {
int processor_id, socket, core;
} tuple_t;
static int supported = 0;
static int num_processors = -1;
static int max_processor_num = -1;
static int num_sockets = -1;
static int max_socket_id = -1;
static int *max_core_id = NULL;
static int *num_cores = NULL;
static int max_core_id_overall = -1;
static tuple_t *map_processor_id_to_tuple = NULL;
static tuple_t ***map_tuple_to_processor_id = NULL;
static void clear_cache(void)
{
if (NULL != max_core_id) {
free(max_core_id);
max_core_id = NULL;
}
if (NULL != num_cores) {
free(num_cores);
num_cores = NULL;
}
if (NULL != map_processor_id_to_tuple) {
free(map_processor_id_to_tuple);
map_processor_id_to_tuple = NULL;
}
if (NULL != map_tuple_to_processor_id) {
if (NULL != map_tuple_to_processor_id[0]) {
free(map_tuple_to_processor_id[0]);
map_tuple_to_processor_id = NULL;
}
free(map_tuple_to_processor_id);
map_tuple_to_processor_id = NULL;
}
num_processors = max_processor_num = -1;
num_sockets = max_socket_id = -1;
max_core_id_overall = -1;
}
static void load_cache(const char *sysfs_mount)
{
int i, j, k, invalid_entry, fd;
char path[PATH_MAX], buf[8];
PLPA_NAME(cpu_set_t) *cores_on_sockets;
int found;
/* Check for the parent directory */
sprintf(path, "%s/devices/system/cpu", sysfs_mount);
if (access(path, R_OK|X_OK)) {
return;
}
/* Go through and find the max processor ID */
for (num_processors = max_processor_num = i = 0;
i < PLPA_BITMASK_CPU_MAX; ++i) {
sprintf(path, "%s/devices/system/cpu/cpu%d", sysfs_mount, i);
if (0 != access(path, (R_OK | X_OK))) {
max_processor_num = i - 1;
break;
}
++num_processors;
}
/* If we found no processors, then we have no topology info */
if (0 == num_processors) {
clear_cache();
return;
}
/* Malloc space for the first map (processor ID -> tuple).
Include enough space for one invalid entry. */
map_processor_id_to_tuple = malloc(sizeof(tuple_t) *
(max_processor_num + 2));
if (NULL == map_processor_id_to_tuple) {
return;
}
for (i = 0; i <= max_processor_num; ++i) {
map_processor_id_to_tuple[i].processor_id = i;
map_processor_id_to_tuple[i].socket = -1;
map_processor_id_to_tuple[i].core = -1;
}
/* Set the invalid entry */
invalid_entry = i;
map_processor_id_to_tuple[invalid_entry].processor_id = -1;
map_processor_id_to_tuple[invalid_entry].socket = -1;
map_processor_id_to_tuple[invalid_entry].core = -1;
/* Build a cached map of (socket,core) tuples */
for (found = 0, i = 0; i <= max_processor_num; ++i) {
sprintf(path, "%s/devices/system/cpu/cpu%d/topology/core_id",
sysfs_mount, i);
fd = open(path, O_RDONLY);
if ( fd < 0 ) {
continue;
}
if ( read(fd, buf, 7) <= 0 ) {
continue;
}
sscanf(buf, "%d", &(map_processor_id_to_tuple[i].core));
close(fd);
sprintf(path,
"%s/devices/system/cpu/cpu%d/topology/physical_package_id",
sysfs_mount, i);
fd = open(path, O_RDONLY);
if ( fd < 0 ) {
continue;
}
if ( read(fd, buf, 7) <= 0 ) {
continue;
}
sscanf(buf, "%d", &(map_processor_id_to_tuple[i].socket));
close(fd);
found = 1;
/* Keep a running tab on the max socket number */
if (map_processor_id_to_tuple[i].socket > max_socket_id) {
max_socket_id = map_processor_id_to_tuple[i].socket;
}
}
/* Now that we know the max number of sockets, allocate some
arrays */
max_core_id = malloc(sizeof(int) * (max_socket_id + 1));
if (NULL == max_core_id) {
clear_cache();
return;
}
num_cores = malloc(sizeof(int) * (max_socket_id + 1));
if (NULL == num_cores) {
clear_cache();
return;
}
for (i = 0; i <= max_socket_id; ++i) {
num_cores[i] = -1;
max_core_id[i] = -1;
}
/* Find the max core number on each socket */
for (i = 0; i <= max_processor_num; ++i) {
if (map_processor_id_to_tuple[i].core >
max_core_id[map_processor_id_to_tuple[i].socket]) {
max_core_id[map_processor_id_to_tuple[i].socket] =
map_processor_id_to_tuple[i].core;
}
if (max_core_id[map_processor_id_to_tuple[i].socket] >
max_core_id_overall) {
max_core_id_overall =
max_core_id[map_processor_id_to_tuple[i].socket];
}
}
/* If we didn't find any core_id/physical_package_id's, then we
don't have the topology info */
if (!found) {
clear_cache();
return;
}
/* Go through and count the number of unique sockets found. It
may not be the same as max_socket_id because there may be
"holes" -- e.g., sockets 0 and 3 are used, but sockets 1 and 2
are empty. */
for (j = i = 0; i <= max_socket_id; ++i) {
if (max_core_id[i] >= 0) {
++j;
}
}
if (j > 0) {
num_sockets = j;
}
/* Count how many cores are available on each socket. This may
not be the same as max_core_id[socket_num] if there are
"holes". I don't know if holes can happen (i.e., if specific
cores can be taken offline), but what the heck... */
cores_on_sockets = malloc(sizeof(PLPA_NAME(cpu_set_t)) *
(max_socket_id + 1));
if (NULL == cores_on_sockets) {
clear_cache();
return;
}
for (i = 0; i <= max_socket_id; ++i) {
PLPA_CPU_ZERO(&(cores_on_sockets[i]));
}
for (i = 0; i <= max_processor_num; ++i) {
if (map_processor_id_to_tuple[i].socket >= 0) {
PLPA_CPU_SET(map_processor_id_to_tuple[i].core,
&(cores_on_sockets[map_processor_id_to_tuple[i].socket]));
}
}
for (i = 0; i <= max_socket_id; ++i) {
int count = 0;
for (j = 0; j < PLPA_BITMASK_CPU_MAX; ++j) {
if (PLPA_CPU_ISSET(j, &(cores_on_sockets[i]))) {
++count;
}
}
if (count > 0) {
num_cores[i] = count;
}
}
/* Now go through and build the map in the other direction:
(socket,core) => processor_id. This map simply points to
entries in the other map (i.e., it's by reference instead of by
value). */
map_tuple_to_processor_id = malloc(sizeof(tuple_t **) *
(max_socket_id + 1));
if (NULL == map_tuple_to_processor_id) {
clear_cache();
return;
}
map_tuple_to_processor_id[0] = malloc(sizeof(tuple_t *) *
((max_socket_id + 1) *
(max_core_id_overall + 1)));
if (NULL == map_tuple_to_processor_id[0]) {
clear_cache();
return;
}
/* Set pointers for 2nd dimension */
for (i = 1; i <= max_socket_id; ++i) {
map_tuple_to_processor_id[i] =
map_tuple_to_processor_id[i - 1] + max_core_id_overall + 1;
}
/* Compute map */
for (i = 0; i <= max_socket_id; ++i) {
for (j = 0; j <= max_core_id_overall; ++j) {
/* Default to the invalid entry in the other map, meaning
that this (socket,core) combination doesn't exist
(e.g., the core number does not exist in this socket,
although it does exist in other sockets). */
map_tuple_to_processor_id[i][j] =
&map_processor_id_to_tuple[invalid_entry];
/* See if this (socket,core) tuple exists in the other
map. If so, set this entry to point to it (overriding
the invalid entry default). */
for (k = 0; k <= max_processor_num; ++k) {
if (map_processor_id_to_tuple[k].socket == i &&
map_processor_id_to_tuple[k].core == j) {
map_tuple_to_processor_id[i][j] =
&map_processor_id_to_tuple[k];
#if defined(PLPA_DEBUG) && PLPA_DEBUG
printf("Creating map: (socket %d, core %d) -> ID %d\n",
i, j, k);
#endif
break;
}
}
}
}
supported = 1;
}
/* Internal function to setup the mapping data. Guaranteed to be
calling during PLPA_NAME(init), so we don't have to worry about
thread safety here. */
int PLPA_NAME(map_init)(void)
{
const char *sysfs_mount = "/sys";
char *temp;
temp = getenv("PLPA_SYSFS_MOUNT");
if (temp) {
sysfs_mount = temp;
}
load_cache(sysfs_mount);
return 0;
}
/* Internal function to cleanup allocated memory. Only called by one
thread (during PLPA_NAME(finalize), so don't need to worry about
thread safety here. */
void PLPA_NAME(map_finalize)(void)
{
clear_cache();
}
/* Return whether this kernel supports topology information or not */
int PLPA_NAME(have_topology_information)(int *supported_arg)
{
int ret;
/* Initialize if not already done so */
if (!PLPA_NAME(initialized)) {
if (0 != (ret = PLPA_NAME(init)())) {
return ret;
}
}
/* Check for bozo arguments */
if (NULL == supported_arg) {
return EINVAL;
}
*supported_arg = supported;
return 0;
}
int PLPA_NAME(map_to_processor_id)(int socket, int core, int *processor_id)
{
int ret;
/* Initialize if not already done so */
if (!PLPA_NAME(initialized)) {
if (0 != (ret = PLPA_NAME(init)())) {
return ret;
}
}
/* Check for bozo arguments */
if (NULL == processor_id) {
return EINVAL;
}
/* If this system doesn't support mapping, sorry Charlie */
if (!supported) {
return ENOSYS;
}
/* Check for some invalid entries */
if (socket < 0 || socket > max_socket_id ||
core < 0 || core > max_core_id_overall) {
return ENOENT;
}
/* If the mapping returns -1, then this is a non-existent
socket/core combo (even though they fall within the max socket
/ max core overall values) */
ret = map_tuple_to_processor_id[socket][core]->processor_id;
if (-1 == ret) {
return ENOENT;
}
/* Ok, all should be good -- return the mapping */
*processor_id = ret;
return 0;
}
int PLPA_NAME(map_to_socket_core)(int processor_id, int *socket, int *core)
{
int ret;
/* Initialize if not already done so */
if (!PLPA_NAME(initialized)) {
if (0 != (ret = PLPA_NAME(init)())) {
return ret;
}
}
/* Check for bozo arguments */
if (NULL == socket || NULL == core) {
return EINVAL;
}
/* If this system doesn't support mapping, sorry Charlie */
if (!supported) {
return ENOSYS;
}
/* Check for some invalid entries */
if (processor_id < 0 || processor_id > max_processor_num) {
return ENOENT;
}
ret = map_processor_id_to_tuple[processor_id].socket;
if (-1 == ret) {
return ENOENT;
}
/* Ok, all should be good -- return the mapping */
*socket = ret;
*core = map_processor_id_to_tuple[processor_id].core;
return 0;
}
int PLPA_NAME(get_processor_info)(int *num_processors_arg,
int *max_processor_num_arg)
{
int ret;
/* Initialize if not already done so */
if (!PLPA_NAME(initialized)) {
if (0 != (ret = PLPA_NAME(init)())) {
return ret;
}
}
/* Check for bozo arguments */
if (NULL == max_processor_num_arg || NULL == num_processors_arg) {
return EINVAL;
}
/* If this system doesn't support mapping, sorry Charlie */
if (!supported) {
return ENOSYS;
}
/* All done */
*num_processors_arg = num_processors;
*max_processor_num_arg = max_processor_num;
return 0;
}
/* Return the max socket number */
int PLPA_NAME(get_socket_info)(int *num_sockets_arg, int *max_socket_id_arg)
{
int ret;
/* Initialize if not already done so */
if (!PLPA_NAME(initialized)) {
if (0 != (ret = PLPA_NAME(init)())) {
return ret;
}
}
/* Check for bozo arguments */
if (NULL == max_socket_id_arg || NULL == num_sockets_arg) {
return EINVAL;
}
/* If this system doesn't support mapping, sorry Charlie */
if (!supported) {
return ENOSYS;
}
/* All done */
*num_sockets_arg = num_sockets;
*max_socket_id_arg = max_socket_id;
return 0;
}
/* Return the number of cores in a socket and the max core ID number */
int PLPA_NAME(get_core_info)(int socket, int *num_cores_arg,
int *max_core_id_arg)
{
int ret;
/* Initialize if not already done so */
if (!PLPA_NAME(initialized)) {
if (0 != (ret = PLPA_NAME(init)())) {
return ret;
}
}
/* Check for bozo arguments */
if (NULL == max_core_id_arg || NULL == num_cores_arg) {
return EINVAL;
}
/* If this system doesn't support mapping, sorry Charlie */
if (!supported) {
return ENOSYS;
}
/* Check for some invalid entries */
if (socket < 0 || socket > max_socket_id || -1 == max_core_id[socket]) {
return ENOENT;
}
ret = num_cores[socket];
if (-1 == ret) {
return ENOENT;
}
/* All done */
*num_cores_arg = ret;
*max_core_id_arg = max_core_id[socket];
return 0;
}

73
plpa-1.1/src/plpa_runtime.c Normal file
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@ -0,0 +1,73 @@
/*
* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
*/
#include "plpa_config.h"
#include "plpa.h"
#include "plpa_internal.h"
#include <errno.h>
#include <pthread.h>
/* Global variables */
int PLPA_NAME(initialized) = 0;
/* Local variables */
static int refcount = 0;
static pthread_mutex_t mutex;
/* Central clearing point for all parts of PLPA that need to be
initialized. It is erroneous to call this function by more than
one thread simultaneously. */
int PLPA_NAME(init)(void)
{
int ret;
/* If we're already initialized, simply increase the refcount */
if (PLPA_NAME(initialized)) {
pthread_mutex_lock(&mutex);
++refcount;
pthread_mutex_unlock(&mutex);
return 0;
}
/* Otherwise, initialize all the sybsystems */
if (0 != (ret = pthread_mutex_init(&mutex, NULL)) ||
0 != (ret = PLPA_NAME(api_probe_init)()) ||
0 != (ret = PLPA_NAME(map_init)())) {
return ret;
}
PLPA_NAME(initialized) = 1;
refcount = 1;
return 0;
}
/* Central clearing point for all parts of PLPA that need to be
shutdown. */
int PLPA_NAME(finalize)(void)
{
int val;
/* If we're not initialized, return an error */
if (!PLPA_NAME(initialized)) {
return ENOENT;
}
/* Decrement and check the refcount. If it's nonzero, then simply
return success. */
pthread_mutex_lock(&mutex);
val = --refcount;
pthread_mutex_unlock(&mutex);
if (0 != val) {
return 0;
}
/* Ok, we're the last one. Cleanup. */
PLPA_NAME(map_finalize)();
pthread_mutex_destroy(&mutex);
PLPA_NAME(initialized) = 0;
return 0;
}