Dear RT Folks, I'm please to announce the 3.0.9-rt26 stable release. You can get this release via the git tree at: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git Head SHA1: 54b64aeec82d0079a8a469f4dca8fc5f8b5b8e1b Or to build 3.0.9-rt26 directly, the following patches should be applied: http://www.kernel.org/pub/linux/kernel/v3.0/linux-3.0.tar.xz http://www.kernel.org/pub/linux/kernel/v3.0/patch-3.0.9.xz http://www.kernel.org/pub/linux/kernel/projects/rt/3.0/patch-3.0.9-rt26.patch.xz You can also build from 3.0.9-rt25 by applying the incremental patch: http://www.kernel.org/pub/linux/kernel/projects/rt/3.0/incr/patch-3.0.9-rt25-rt26.patch.xz The broken out patches are available at: http://www.kernel.org/pub/linux/kernel/projects/rt/3.0/patches-3.0.9-rt26.tar.xz Enjoy, -- Steve Changes from 3.0.9-rt25: --- John Kacur (2): softirq: Export in_serving_softirq() rcu: Fix macro substitution for synchronize_rcu_bh() on RT Peter Zijlstra (1): x86: crypto: Reduce preempt disabled regions Steven Rostedt (2): tracing: Show padding as unsigned short Linux 3.0.9-rt26 Thomas Gleixner (1): dm: Make rt aware ---- arch/x86/crypto/aesni-intel_glue.c | 24 +++++++++++++----------- drivers/md/dm.c | 4 ++-- include/linux/rcutree.h | 2 +- kernel/softirq.c | 1 + kernel/trace/trace_events.c | 2 +- localversion-rt | 2 +- 6 files changed, 19 insertions(+), 16 deletions(-) --------------------------- diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c index feee8ff..81ec77c 100644 --- a/arch/x86/crypto/aesni-intel_glue.c +++ b/arch/x86/crypto/aesni-intel_glue.c @@ -288,14 +288,14 @@ static int ecb_encrypt(struct blkcipher_desc *desc, err = blkcipher_walk_virt(desc, &walk); desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; - kernel_fpu_begin(); while ((nbytes = walk.nbytes)) { + kernel_fpu_begin(); aesni_ecb_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, - nbytes & AES_BLOCK_MASK); + nbytes & AES_BLOCK_MASK); + kernel_fpu_end(); nbytes &= AES_BLOCK_SIZE - 1; err = blkcipher_walk_done(desc, &walk, nbytes); } - kernel_fpu_end(); return err; } @@ -312,14 +312,14 @@ static int ecb_decrypt(struct blkcipher_desc *desc, err = blkcipher_walk_virt(desc, &walk); desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; - kernel_fpu_begin(); while ((nbytes = walk.nbytes)) { + kernel_fpu_begin(); aesni_ecb_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, nbytes & AES_BLOCK_MASK); + kernel_fpu_end(); nbytes &= AES_BLOCK_SIZE - 1; err = blkcipher_walk_done(desc, &walk, nbytes); } - kernel_fpu_end(); return err; } @@ -358,14 +358,14 @@ static int cbc_encrypt(struct blkcipher_desc *desc, err = blkcipher_walk_virt(desc, &walk); desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; - kernel_fpu_begin(); while ((nbytes = walk.nbytes)) { + kernel_fpu_begin(); aesni_cbc_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, nbytes & AES_BLOCK_MASK, walk.iv); + kernel_fpu_end(); nbytes &= AES_BLOCK_SIZE - 1; err = blkcipher_walk_done(desc, &walk, nbytes); } - kernel_fpu_end(); return err; } @@ -382,14 +382,14 @@ static int cbc_decrypt(struct blkcipher_desc *desc, err = blkcipher_walk_virt(desc, &walk); desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; - kernel_fpu_begin(); while ((nbytes = walk.nbytes)) { + kernel_fpu_begin(); aesni_cbc_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, nbytes & AES_BLOCK_MASK, walk.iv); + kernel_fpu_end(); nbytes &= AES_BLOCK_SIZE - 1; err = blkcipher_walk_done(desc, &walk, nbytes); } - kernel_fpu_end(); return err; } @@ -444,18 +444,20 @@ static int ctr_crypt(struct blkcipher_desc *desc, err = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE); desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; - kernel_fpu_begin(); while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) { + kernel_fpu_begin(); aesni_ctr_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, nbytes & AES_BLOCK_MASK, walk.iv); + kernel_fpu_end(); nbytes &= AES_BLOCK_SIZE - 1; err = blkcipher_walk_done(desc, &walk, nbytes); } if (walk.nbytes) { + kernel_fpu_begin(); ctr_crypt_final(ctx, &walk); + kernel_fpu_end(); err = blkcipher_walk_done(desc, &walk, 0); } - kernel_fpu_end(); return err; } diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 41abc6d..67207d6 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1644,14 +1644,14 @@ static void dm_request_fn(struct request_queue *q) if (map_request(ti, clone, md)) goto requeued; - BUG_ON(!irqs_disabled()); + BUG_ON_NONRT(!irqs_disabled()); spin_lock(q->queue_lock); } goto out; requeued: - BUG_ON(!irqs_disabled()); + BUG_ON_NONRT(!irqs_disabled()); spin_lock(q->queue_lock); delay_and_out: diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h index 7a25aea..3bf47dc 100644 --- a/include/linux/rcutree.h +++ b/include/linux/rcutree.h @@ -60,7 +60,7 @@ static inline void exit_rcu(void) #ifndef CONFIG_PREEMPT_RT_FULL extern void synchronize_rcu_bh(void); #else -# define synchronize_rcu_bh() synchronize_rcu() +# define synchronize_rcu_bh synchronize_rcu #endif extern void synchronize_sched_expedited(void); extern void synchronize_rcu_expedited(void); diff --git a/kernel/softirq.c b/kernel/softirq.c index e8756aa..026a283 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -447,6 +447,7 @@ int in_serving_softirq(void) preempt_enable(); return res; } +EXPORT_SYMBOL(in_serving_softirq); /* * Called with bh and local interrupts disabled. For full RT cpu must diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 37d3ffb..c71844c 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -117,7 +117,7 @@ static int trace_define_common_fields(void) __common_field(unsigned char, preempt_count); __common_field(int, pid); __common_field(unsigned short, migrate_disable); - __common_field(int, padding); + __common_field(unsigned short, padding); return ret; } diff --git a/localversion-rt b/localversion-rt index c5b71f9..2e9afd4 100644 --- a/localversion-rt +++ b/localversion-rt @@ -1 +1 @@ --rt25 +-rt26
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