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2.6.27+ portability changes

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- Added SPL_AC_3ARGS_ON_EACH_CPU configure check to determine
  if the older 4 argument version of on_each_cpu() should be
  used or the new 3 argument version.  The retry argument was
  dropped in the new API which was never used anyway.
- Updated work queue compatibility wrappers.  The old way this
  worked was to pass a data point when initialized the workqueue.
  The new API assumed the work item is embedding in a structure
  and we us container_of() to find that data pointer.
- Updated skc->skc_flags to be an unsigned long which is now
  type checked in the bit operations.  This silences the warnings.
- Updated autogen products and splat tests accordingly
This commit is contained in:
Brian Behlendorf 2009-02-02 15:12:30 -08:00
parent f220894e1f
commit 31a033ecd4
11 changed files with 139 additions and 75 deletions
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19
config/spl-build.m4
View File

@ -686,3 +686,22 @@ AC_DEFUN([SPL_AC_DIV64_64], [
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 2.6.27 API change,
dnl # on_each_cpu() uses 3 args, no 'retry' argument
dnl #
AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [
AC_MSG_CHECKING([whether on_each_cpu() wants 3 args])
SPL_LINUX_TRY_COMPILE([
#include <linux/smp.h>
],[
on_each_cpu(NULL, NULL, 0);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1,
[on_each_cpu wants 3 args])
],[
AC_MSG_RESULT(no)
])
])

61
configure vendored
View File

@ -20407,6 +20407,67 @@ cat >>confdefs.h <<\_ACEOF
_ACEOF
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
echo "$as_me:$LINENO: result: no" >&5
echo "${ECHO_T}no" >&6
fi
rm -f build/conftest.o build/conftest.mod.c build/conftest.mod.o build/conftest.ko build/conftest.c conftest.c
echo "$as_me:$LINENO: checking whether on_each_cpu() wants 3 args" >&5
echo $ECHO_N "checking whether on_each_cpu() wants 3 args... $ECHO_C" >&6
cat >conftest.c <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <linux/smp.h>
int
main (void)
{
on_each_cpu(NULL, NULL, 0);
;
return 0;
}
_ACEOF
rm -f build/conftest.o build/conftest.mod.c build/conftest.ko build/Makefile
echo "obj-m := conftest.o" >build/Makefile
if { ac_try='cp conftest.c build && make modules CC="$CC" LINUXINCLUDE="-Iinclude -include include/linux/autoconf.h" -o tmp_include_depends -o scripts -o include/config/MARKER -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
echo "$as_me:$LINENO: result: yes" >&5
echo "${ECHO_T}yes" >&6
cat >>confdefs.h <<\_ACEOF
#define HAVE_3ARGS_ON_EACH_CPU 1
_ACEOF
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

1
configure.ac
View File

@ -68,6 +68,7 @@ SPL_AC_KMALLOC_NODE
SPL_AC_MONOTONIC_CLOCK
SPL_AC_INODE_I_MUTEX
SPL_AC_DIV64_64
SPL_AC_3ARGS_ON_EACH_CPU
TOPDIR=`/bin/pwd`

16
include/linux/smp_compat.h Normal file
View File

@ -0,0 +1,16 @@
#ifndef _SPL_SMP_COMPAT_H
#define _SPL_SMP_COMPAT_H
#include <linux/smp.h>
#ifdef HAVE_3ARGS_ON_EACH_CPU
#define spl_on_each_cpu(func,info,wait) on_each_cpu(func,info,wait)
#else
#define spl_on_each_cpu(func,info,wait) on_each_cpu(func,info,0,wait)
#endif /* HAVE_3ARGS_ON_EACH_CPU */
#endif /* _SPL_SMP_COMPAT_H */

25
include/linux/workqueue_compat.h Normal file
View File

@ -0,0 +1,25 @@
#ifndef _SPL_WORKQUEUE_COMPAT_H
#define _SPL_WORKQUEUE_COMPAT_H
#include <linux/workqueue.h>
#include <sys/types.h>
#ifdef HAVE_3ARGS_INIT_WORK
#define delayed_work work_struct
#define spl_init_work(wq, cb, d) INIT_WORK((wq), (void *)(cb), \
(void *)(d))
#define spl_init_delayed_work(wq,cb,d) INIT_WORK((wq), (void *)(cb), \
(void *)(d))
#define spl_get_work_data(d, t, f) (t *)(d)
#else
#define spl_init_work(wq, cb, d) INIT_WORK((wq), (void *)(cb));
#define spl_init_delayed_work(wq,cb,d) INIT_DELAYED_WORK((wq), (void *)(cb));
#define spl_get_work_data(d, t, f) (t *)container_of(d, t, f)
#endif /* HAVE_3ARGS_INIT_WORK */
#endif /* _SPL_WORKQUEUE_COMPAT_H */

3
include/sys/kmem.h
View File

@ -45,7 +45,6 @@ extern "C" {
#include <asm/atomic_compat.h>
#include <sys/types.h>
#include <sys/debug.h>
#include <sys/workqueue.h>
/*
* Memory allocation interfaces
@ -286,7 +285,7 @@ typedef struct spl_kmem_cache {
spl_kmem_reclaim_t skc_reclaim; /* Reclaimator */
void *skc_private; /* Private data */
void *skc_vmp; /* Unused */
uint32_t skc_flags; /* Flags */
unsigned long skc_flags; /* Flags */
uint32_t skc_obj_size; /* Object size */
uint32_t skc_obj_align; /* Object alignment */
uint32_t skc_slab_objs; /* Objects per slab */

2
include/sys/types.h
View File

@ -14,6 +14,8 @@ extern "C" {
#include <linux/list_compat.h>
#include <linux/time_compat.h>
#include <linux/bitops_compat.h>
#include <linux/smp_compat.h>
#include <linux/workqueue_compat.h>
#ifndef HAVE_UINTPTR_T
typedef unsigned long uintptr_t;

55
include/sys/workqueue.h
View File

@ -1,55 +0,0 @@
/*
* This file is part of the SPL: Solaris Porting Layer.
*
* Copyright (c) 2008 Lawrence Livermore National Security, LLC.
* Produced at Lawrence Livermore National Laboratory
* Written by:
* Brian Behlendorf <behlendorf1@llnl.gov>,
* Herb Wartens <wartens2@llnl.gov>,
* Jim Garlick <garlick@llnl.gov>
* UCRL-CODE-235197
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _SPL_WORKQUEUE_H
#define _SPL_WORKQUEUE_H
#ifdef __cplusplus
extern "C" {
#endif
#include <linux/workqueue.h>
#include <sys/types.h>
#ifdef HAVE_3ARGS_INIT_WORK
#define delayed_work work_struct
#define spl_init_work(wq, cb, d) INIT_WORK((wq), (void *)(cb), \
(void *)(d))
#define spl_init_delayed_work(wq,cb,d) INIT_WORK((wq), (void *)(cb), \
(void *)(d))
#define spl_get_work_data(d, t, f) (t *)(d)
#else
#define spl_init_work(wq, cb, d) INIT_WORK((wq), (void *)(cb));
#define spl_init_delayed_work(wq,cb,d) INIT_DELAYED_WORK((wq), (void *)(cb));
#define spl_get_work_data(d, t, f) (t *)container_of(d, t, f)
#endif /* HAVE_3ARGS_INIT_WORK */
#endif /* _SPL_WORKQUEUE_H */

6
module/spl/spl-kmem.c
View File

@ -783,7 +783,7 @@ spl_cache_age(void *data)
spl_get_work_data(data, spl_kmem_cache_t, skc_work.work);
ASSERT(skc->skc_magic == SKC_MAGIC);
on_each_cpu(spl_magazine_age, skc, 0, 1);
spl_on_each_cpu(spl_magazine_age, skc, 1);
spl_slab_reclaim(skc, 0);
if (!test_bit(KMC_BIT_DESTROY, &skc->skc_flags))
@ -923,7 +923,7 @@ spl_magazine_create(spl_kmem_cache_t *skc)
skc->skc_mag_size = spl_magazine_size(skc);
skc->skc_mag_refill = (skc->skc_mag_size + 1) / 2;
on_each_cpu(__spl_magazine_create, skc, 0, 1);
spl_on_each_cpu(__spl_magazine_create, skc, 1);
RETURN(0);
}
@ -945,7 +945,7 @@ static void
spl_magazine_destroy(spl_kmem_cache_t *skc)
{
ENTRY;
on_each_cpu(__spl_magazine_destroy, skc, 0, 1);
spl_on_each_cpu(__spl_magazine_destroy, skc, 1);
EXIT;
}

23
module/splat/splat-mutex.c
View File

@ -59,28 +59,26 @@ typedef struct mutex_priv {
int mp_rc;
} mutex_priv_t;
#ifdef HAVE_3ARGS_INIT_WORK
static void
splat_mutex_test1_work(void *priv)
{
mutex_priv_t *mp = (mutex_priv_t *)priv;
mutex_priv_t *mp;
mp = spl_get_work_data(priv, mutex_priv_t, mp_work.work);
ASSERT(mp->mp_magic == SPLAT_MUTEX_TEST_MAGIC);
mp->mp_rc = 0;
if (!mutex_tryenter(&mp->mp_mtx))
mp->mp_rc = -EBUSY;
}
#endif
static int
splat_mutex_test1(struct file *file, void *arg)
{
int rc = 0;
#ifdef HAVE_3ARGS_INIT_WORK
struct workqueue_struct *wq;
struct work_struct work;
mutex_priv_t *mp;
int rc = 0;
mp = (mutex_priv_t *)kmalloc(sizeof(*mp), GFP_KERNEL);
if (mp == NULL)
@ -97,7 +95,7 @@ splat_mutex_test1(struct file *file, void *arg)
mp->mp_magic = SPLAT_MUTEX_TEST_MAGIC;
mp->mp_file = file;
INIT_WORK(&work, splat_mutex_test1_work, mp);
spl_init_work(&work, splat_mutex_test1_work, mp);
/* Schedule a work item which will try and aquire the mutex via
* mutex_tryenter() while its held. This should fail and the work
@ -143,17 +141,16 @@ out:
destroy_workqueue(wq);
out2:
kfree(mp);
#endif
return rc;
}
#ifdef HAVE_3ARGS_INIT_WORK
static void
splat_mutex_test2_work(void *priv)
{
mutex_priv_t *mp = (mutex_priv_t *)priv;
mutex_priv_t *mp;
int rc;
mp = spl_get_work_data(priv, mutex_priv_t, mp_work.work);
ASSERT(mp->mp_magic == SPLAT_MUTEX_TEST_MAGIC);
/* Read the value before sleeping and write it after we wake up to
@ -165,16 +162,13 @@ splat_mutex_test2_work(void *priv)
mp->mp_rc = rc + 1;
mutex_exit(&mp->mp_mtx);
}
#endif
static int
splat_mutex_test2(struct file *file, void *arg)
{
int rc = 0;
#ifdef HAVE_3ARGS_INIT_WORK
struct workqueue_struct *wq;
mutex_priv_t *mp;
int i;
int i, rc = 0;
mp = (mutex_priv_t *)kmalloc(sizeof(*mp), GFP_KERNEL);
if (mp == NULL)
@ -200,7 +194,7 @@ splat_mutex_test2(struct file *file, void *arg)
* critical region at the same time the system will panic. If the
* mutex is implemented right this will never happy, that's a pass. */
for (i = 0; i < SPLAT_MUTEX_TEST_COUNT; i++) {
INIT_WORK(&(mp->mp_work[i]), splat_mutex_test2_work, mp);
spl_init_work(&(mp->mp_work[i]), splat_mutex_test2_work, mp);
if (!queue_work(wq, &(mp->mp_work[i]))) {
splat_vprint(file, SPLAT_MUTEX_TEST2_NAME,
@ -226,7 +220,6 @@ splat_mutex_test2(struct file *file, void *arg)
destroy_workqueue(wq);
out:
kfree(mp);
#endif
return rc;
}

3
spl_config.h.in
View File

@ -18,6 +18,9 @@
/* INIT_WORK wants 3 args */
#undef HAVE_3ARGS_INIT_WORK
/* on_each_cpu wants 3 args */
#undef HAVE_3ARGS_ON_EACH_CPU
/* kernel defines atomic64_t */
#undef HAVE_ATOMIC64_T