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authorAndré Fabian Silva Delgado <emulatorman@lavabit.com>2012-10-22 23:13:39 -0200
committerAndré Fabian Silva Delgado <emulatorman@lavabit.com>2012-10-22 23:13:39 -0200
commit151c8e229d123f90425aae449e9ebc64e1844410 (patch)
tree5c6bfb3455b0bbffe06ae6ad789ec7a90548993e /libre/linux-libre
parent83a14844ae5b2b650b15453d8e9441a352e1a3a8 (diff)
linux-libre-3.6.3-1: updating version, adding module initialisation patches and readding memgroups
Diffstat (limited to 'libre/linux-libre')
-rwxr-xr-xlibre/linux-libre/PKGBUILD17
-rwxr-xr-xlibre/linux-libre/config.i6867
-rwxr-xr-xlibre/linux-libre/config.x86_647
-rwxr-xr-xlibre/linux-libre/linux-libre.install2
-rw-r--r--libre/linux-libre/module-init-wait-3.6.patch77
-rw-r--r--libre/linux-libre/module-symbol-waiting-3.6.patch66
6 files changed, 167 insertions, 9 deletions
diff --git a/libre/linux-libre/PKGBUILD b/libre/linux-libre/PKGBUILD
index a0f8777e6..a35f7226b 100755
--- a/libre/linux-libre/PKGBUILD
+++ b/libre/linux-libre/PKGBUILD
@@ -10,10 +10,10 @@
pkgbase=linux-libre # Build stock -LIBRE kernel
#pkgbase=linux-libre-custom # Build kernel with a different name
_basekernel=3.6
-_sublevel=2
+_sublevel=3
pkgver=${_basekernel}.${_sublevel}
pkgrel=1
-_lxopkgver=${_basekernel}.1 # nearly always the same as pkgver
+_lxopkgver=${_basekernel}.2 # nearly always the same as pkgver
arch=('i686' 'x86_64' 'mips64el')
url="http://linux-libre.fsfla.org/"
license=('GPL2')
@@ -29,9 +29,11 @@ source=("http://linux-libre.fsfla.org/pub/linux-libre/releases/${_basekernel}-gn
'Kbuild.platforms'
'boot-logo.patch'
'change-default-console-loglevel.patch'
+ 'module-symbol-waiting-3.6.patch'
+ 'module-init-wait-3.6.patch'
"http://www.linux-libre.fsfla.org/pub/linux-libre/lemote/gnewsense/pool/debuginfo/linux-patches-${_lxopkgver}-gnu_0loongsonlibre_mipsel.tar.bz2")
md5sums=('a2312edd0265b5b07bd4b50afae2b380'
- '1014a197e2bea449600d7b2cca415eec'
+ '844bd14e9f58225274e096c31bbb8a8f'
'600af9b069c8a1c18dd5ef1f25bf7080'
'c18004748092bf4ee57ade7e25fdef22'
'e49ac236dfeef709f91a3d993ea7b62c'
@@ -39,7 +41,9 @@ md5sums=('a2312edd0265b5b07bd4b50afae2b380'
'8267264d9a8966e57fdacd1fa1fc65c4'
'04b21c79df0a952c22d681dd4f4562df'
'9d3c56a4b999c8bfbd4018089a62f662'
- '1690532ad271b11a87e8824f7da65101')
+ '670931649c60fcb3ef2e0119ed532bd4'
+ '8a71abc4224f575008f974a099b5cf6f'
+ '34508a324c3704662e9fc115d07735a3')
if [ "$CARCH" != "mips64el" ]; then
# Don't use the Loongson-specific patches on non-mips64el arches.
unset source[${#source[@]}-1]
@@ -64,6 +68,11 @@ build() {
# (relevant patch sent upstream: https://lkml.org/lkml/2011/7/26/227)
patch -Np1 -i "${srcdir}/change-default-console-loglevel.patch"
+ # fix module initialisation
+ # https://bugs.archlinux.org/task/32122
+ patch -Np1 -i "${srcdir}/module-symbol-waiting-3.6.patch"
+ patch -Np1 -i "${srcdir}/module-init-wait-3.6.patch"
+
if [ "$CARCH" == "mips64el" ]; then
sed -i "s|^EXTRAVERSION.*|EXTRAVERSION =-libre|" Makefile
sed -r "s|^( SUBLEVEL = ).*|\1$_sublevel|" \
diff --git a/libre/linux-libre/config.i686 b/libre/linux-libre/config.i686
index e553c3d44..6533b0402 100755
--- a/libre/linux-libre/config.i686
+++ b/libre/linux-libre/config.i686
@@ -1,6 +1,6 @@
#
# Automatically generated file; DO NOT EDIT.
-# Linux/i386 3.6.0 Kernel Configuration
+# Linux/i386 3.6.3 Kernel Configuration
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
@@ -134,7 +134,10 @@ CONFIG_CPUSETS=y
CONFIG_PROC_PID_CPUSET=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_RESOURCE_COUNTERS=y
-# CONFIG_MEMCG is not set
+CONFIG_MEMCG=y
+CONFIG_MEMCG_SWAP=y
+# CONFIG_MEMCG_SWAP_ENABLED is not set
+CONFIG_MEMCG_KMEM=y
# CONFIG_CGROUP_HUGETLB is not set
# CONFIG_CGROUP_PERF is not set
CONFIG_CGROUP_SCHED=y
diff --git a/libre/linux-libre/config.x86_64 b/libre/linux-libre/config.x86_64
index 479c39929..fbc1c7588 100755
--- a/libre/linux-libre/config.x86_64
+++ b/libre/linux-libre/config.x86_64
@@ -1,6 +1,6 @@
#
# Automatically generated file; DO NOT EDIT.
-# Linux/x86_64 3.6.0 Kernel Configuration
+# Linux/x86_64 3.6.3 Kernel Configuration
#
CONFIG_64BIT=y
# CONFIG_X86_32 is not set
@@ -136,7 +136,10 @@ CONFIG_CPUSETS=y
CONFIG_PROC_PID_CPUSET=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_RESOURCE_COUNTERS=y
-# CONFIG_MEMCG is not set
+CONFIG_MEMCG=y
+CONFIG_MEMCG_SWAP=y
+# CONFIG_MEMCG_SWAP_ENABLED is not set
+CONFIG_MEMCG_KMEM=y
# CONFIG_CGROUP_HUGETLB is not set
# CONFIG_CGROUP_PERF is not set
CONFIG_CGROUP_SCHED=y
diff --git a/libre/linux-libre/linux-libre.install b/libre/linux-libre/linux-libre.install
index e5af2a1bd..e327cd7ea 100755
--- a/libre/linux-libre/linux-libre.install
+++ b/libre/linux-libre/linux-libre.install
@@ -2,7 +2,7 @@
# arg 2: the old package version
KERNEL_NAME=
-KERNEL_VERSION=3.6.2-1-LIBRE
+KERNEL_VERSION=3.6.3-1-LIBRE
# set a sane PATH to ensure that critical utils like depmod will be found
export PATH='/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'
diff --git a/libre/linux-libre/module-init-wait-3.6.patch b/libre/linux-libre/module-init-wait-3.6.patch
new file mode 100644
index 000000000..1bcfd2491
--- /dev/null
+++ b/libre/linux-libre/module-init-wait-3.6.patch
@@ -0,0 +1,77 @@
+From: Rusty Russell <rusty@rustcorp.com.au>
+Date: Fri, 28 Sep 2012 05:01:03 +0000 (+0930)
+Subject: module: wait when loading a module which is currently initializing.
+X-Git-Tag: v3.7-rc1~2^2~32
+X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=9bb9c3be568346538
+
+module: wait when loading a module which is currently initializing.
+
+The original module-init-tools module loader used a fnctl lock on the
+.ko file to avoid attempts to simultaneously load a module.
+Unfortunately, you can't get an exclusive fcntl lock on a read-only
+fd, making this not work for read-only mounted filesystems.
+module-init-tools has a hacky sleep-and-loop for this now.
+
+It's not that hard to wait in the kernel, and only return -EEXIST once
+the first module has finished loading (or continue loading the module
+if the first one failed to initialize for some reason). It's also
+consistent with what we do for dependent modules which are still loading.
+
+Suggested-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
+Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
+---
+
+diff --git a/kernel/module.c b/kernel/module.c
+index 63cf6e7..74bc195 100644
+--- a/kernel/module.c
++++ b/kernel/module.c
+@@ -2845,6 +2845,20 @@ static int post_relocation(struct module *mod, const struct load_info *info)
+ return module_finalize(info->hdr, info->sechdrs, mod);
+ }
+
++/* Is this module of this name done loading? No locks held. */
++static bool finished_loading(const char *name)
++{
++ struct module *mod;
++ bool ret;
++
++ mutex_lock(&module_mutex);
++ mod = find_module(name);
++ ret = !mod || mod->state != MODULE_STATE_COMING;
++ mutex_unlock(&module_mutex);
++
++ return ret;
++}
++
+ /* Allocate and load the module: note that size of section 0 is always
+ zero, and we rely on this for optional sections. */
+ static struct module *load_module(void __user *umod,
+@@ -2852,7 +2866,7 @@ static struct module *load_module(void __user *umod,
+ const char __user *uargs)
+ {
+ struct load_info info = { NULL, };
+- struct module *mod;
++ struct module *mod, *old;
+ long err;
+
+ pr_debug("load_module: umod=%p, len=%lu, uargs=%p\n",
+@@ -2918,8 +2932,18 @@ static struct module *load_module(void __user *umod,
+ * function to insert in a way safe to concurrent readers.
+ * The mutex protects against concurrent writers.
+ */
++again:
+ mutex_lock(&module_mutex);
+- if (find_module(mod->name)) {
++ if ((old = find_module(mod->name)) != NULL) {
++ if (old->state == MODULE_STATE_COMING) {
++ /* Wait in case it fails to load. */
++ mutex_unlock(&module_mutex);
++ err = wait_event_interruptible(module_wq,
++ finished_loading(mod->name));
++ if (err)
++ goto free_arch_cleanup;
++ goto again;
++ }
+ err = -EEXIST;
+ goto unlock;
+ }
diff --git a/libre/linux-libre/module-symbol-waiting-3.6.patch b/libre/linux-libre/module-symbol-waiting-3.6.patch
new file mode 100644
index 000000000..b87a38ff5
--- /dev/null
+++ b/libre/linux-libre/module-symbol-waiting-3.6.patch
@@ -0,0 +1,66 @@
+From: Rusty Russell <rusty@rustcorp.com.au>
+Date: Fri, 28 Sep 2012 05:01:03 +0000 (+0930)
+Subject: module: fix symbol waiting when module fails before init
+X-Git-Tag: v3.7-rc1~2^2~33
+X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=6f13909f4fe9652f1
+
+module: fix symbol waiting when module fails before init
+
+We use resolve_symbol_wait(), which blocks if the module containing
+the symbol is still loading. However:
+
+1) The module_wq we use is only woken after calling the modules' init
+ function, but there are other failure paths after the module is
+ placed in the linked list where we need to do the same thing.
+
+2) wake_up() only wakes one waiter, and our waitqueue is shared by all
+ modules, so we need to wake them all.
+
+3) wake_up_all() doesn't imply a memory barrier: I feel happier calling
+ it after we've grabbed and dropped the module_mutex, not just after
+ the state assignment.
+
+Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
+---
+
+diff --git a/kernel/module.c b/kernel/module.c
+index 7f2ee45f..63cf6e7 100644
+--- a/kernel/module.c
++++ b/kernel/module.c
+@@ -2959,7 +2959,7 @@ static struct module *load_module(void __user *umod,
+ /* Unlink carefully: kallsyms could be walking list. */
+ list_del_rcu(&mod->list);
+ module_bug_cleanup(mod);
+-
++ wake_up_all(&module_wq);
+ ddebug:
+ dynamic_debug_remove(info.debug);
+ unlock:
+@@ -3034,7 +3034,7 @@ SYSCALL_DEFINE3(init_module, void __user *, umod,
+ blocking_notifier_call_chain(&module_notify_list,
+ MODULE_STATE_GOING, mod);
+ free_module(mod);
+- wake_up(&module_wq);
++ wake_up_all(&module_wq);
+ return ret;
+ }
+ if (ret > 0) {
+@@ -3046,9 +3046,8 @@ SYSCALL_DEFINE3(init_module, void __user *, umod,
+ dump_stack();
+ }
+
+- /* Now it's a first class citizen! Wake up anyone waiting for it. */
++ /* Now it's a first class citizen! */
+ mod->state = MODULE_STATE_LIVE;
+- wake_up(&module_wq);
+ blocking_notifier_call_chain(&module_notify_list,
+ MODULE_STATE_LIVE, mod);
+
+@@ -3071,6 +3070,7 @@ SYSCALL_DEFINE3(init_module, void __user *, umod,
+ mod->init_ro_size = 0;
+ mod->init_text_size = 0;
+ mutex_unlock(&module_mutex);
++ wake_up_all(&module_wq);
+
+ return 0;
+ }