Linus, please pull from the for-linus branch at git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6.git for-linus to receive the following IEEE 1394/ FireWire subsystem updates. Once again it is almost all about bug fixes. Most notable are David Moore's fixes for isochronous reception which greatly enhance the new firewire stack's usability in the IIDC domain (uncompressed video from industrial cameras and webcams). The storage driver firewire-sbp2 received some attention ...

Hi, Recently I've been observing problems with unmounting the /home fs on reboot and/or shutdown on two test boxes. After some more investigation I've found that this is due to some KDE processes stuck in D states after their owner has logged out. This happens 100% of the time if there's a suspend/resume cycle before the user logs out (ie. the user logs into KDE, works for some time, suspends the box to RAM and resmes one or more times and then logs out). Still, I also observe the symptoms on...

This isn't the final update I promised, most of this is fixing bugs in the previous update which became more evident with wider testing (a nasty set of cases where we have &cmnd->sense_buffer instead of &cmnd->sense_buffer[0] which cause problems now that sense_buffer is a pointer instead and a bug in the setup of immediate request sense commands that lead to some USB devices becoming unusable). However, the two feature updates it has are to convert SCSI to allow it to use bidirectiona...

Add preempt off timings. A lot of kernel core code is taken from the RT patch latency trace that was written by Ingo Molnar. This adds "preemptoff" and "preemptirqsoff" to /debugfs/tracing/available_tracers Now instead of just tracing irqs off, preemption off can be selected to be recorded. When this is selected, it shares the same files as irqs off timings. One can either trace preemption off, irqs off, or one or the other off. By echoing "preemptoff" into /debugfs/tracing/current_tracer, re...

This is a simple trace that uses the mcount infrastructure. It is designed to be fast and small, and easy to use. It is useful to record things that happen over a very short period of time, and not to analyze the system in general. An interface is added to the debugfs /debugfs/tracing/ This patch adds the following files: available_tracers list of available tracers. Currently only "function" is available. current_tracer The trace that is currently active. Empty on s...

From: John Stultz <johnstul@us.ibm.com> Handle accurate time even if there's a long delay between accumulated clock cycles. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> --- arch/powerpc/kernel/time.c | 3 +- arch/x86/kernel/vsyscall_64.c | 5 ++- include/asm-x86/vgtod.h | 2 - include/linux/clocksource.h | 58 ++++++++++++++++++++++++++++++++++++++++-- kernel/time/timekeeping.c | 36 +++++++++...

This patch adds hooks to trace the wake up latency of the highest priority waking task. "wakeup" is added to /debugfs/tracing/available_tracers Also added to /debugfs/tracing tracing_max_latency holds the current max latency for the wakeup wakeup_thresh if set to other than zero, a log will be recorded for every wakeup that takes longer than the number entered in here (usecs for all counters) (deletes previous trace) Examples: (with mcount_enabled = 0...

If CONFIG_MCOUNT is selected and /proc/sys/kernel/mcount_enabled is set to a non-zero value the mcount routine will be called everytime we enter a kernel function that is not marked with the "notrace" attribute. The mcount routine will then call a registered function if a function happens to be registered. [This code has been highly hacked by Steven Rostedt, so don't blame Arnaldo for all of this ;-) ] Update: It is now possible to register more than one mcount function. If only one mcou...

From: John Stultz <johnstul@us.ibm.com> The latency tracer needs a way to get an accurate time without grabbing any locks. Locks themselves might call the latency tracer and cause at best a slow down. This patch adds get_monotonic_cycles that returns cycles from a reliable clock source in a monotonic fashion. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> --- include/linux/clocksource.h | 54 +++++++++++++++++++++++++++...

This patch adds hooks into the schedule switch tracing to allow other latency traces to hook into the schedule switches. Signed-off-by: Steven Rostedt <srostedt@redhat.com> --- lib/tracing/trace_sched_switch.c | 135 +++++++++++++++++++++++++++++++++------ lib/tracing/tracer.h | 14 ++++ 2 files changed, 131 insertions(+), 18 deletions(-) Index: linux-mcount.git/lib/tracing/tracer.h =================================================================== --- linux-mcount.git.or...

Add the notrace annotations to some of the vsyscall functions. Signed-off-by: Steven Rostedt <srostedt@redhat.com> --- arch/x86/kernel/vsyscall_64.c | 3 ++- arch/x86/vdso/vclock_gettime.c | 15 ++++++++------- arch/x86/vdso/vgetcpu.c | 3 ++- include/asm-x86/vsyscall.h | 3 ++- 4 files changed, 14 insertions(+), 10 deletions(-) Index: linux-mcount.git/arch/x86/kernel/vsyscall_64.c =================================================================== --- linux-mcoun...

[ version 8 of mcount / trace patches: changes include: Added read_barrier_depends to mcount and sched function loops incase anyone is crazy enough to port this to alpha. (Suggested by Peter Ziljstra) Added smp_rmb for the wakeup_sched_switch to match the smp_wmb in the wakeup_reset. (Pointed out by Peter Ziljstra) Replaced all the atomic_inc/atomic_read with atomic_inc_returned. (Suggested by Frank Ch. Eigler) Found that the tracer ctrl variable wasn't fu...

The latency tracer can call clocksource_read very early in bootup and before the clock source variable has been initialized. This results in a crash at boot up (even before earlyprintk is initialized). Since the clock->read variable points to NULL. This patch simply initializes the clock to use clocksource_jiffies, so that any early user of clocksource_read will not crash. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: John Stultz <johnstul@us.ibm.com> --- include...

[ This patch is added to the series since the wakeup timings trace may lockup without it. ] I thought that one could place a printk anywhere without worrying. But it seems that it is not wise to place a printk where the runqueue lock is held. I just spent two hours debugging why some of my code was locking up, to find that the lockup was caused by some debugging printk's that I had in the scheduler. The printk's were only in rare paths so they shouldn't be too much of a problem, but after I h...

Add marker into context_switch to record the prev and next tasks. Signed-off-by: Steven Rostedt <srostedt@redhat.com> --- kernel/sched.c | 2 ++ 1 file changed, 2 insertions(+) Index: linux-mcount.git/kernel/sched.c =================================================================== --- linux-mcount.git.orig/kernel/sched.c 2008-01-30 14:36:00.000000000 -0500 +++ linux-mcount.git/kernel/sched.c 2008-01-30 15:25:31.000000000 -0500 @@ -2198,6 +2198,8 @@ context_switch(struct rq *rq, stru...

Saving the comm of tasks for each trace is very expensive. This patch includes in the context switch hook, a way to store the last 100 command lines of tasks. This table is examined when a trace is to be printed. Note: The comm may be destroyed if other traces are performed. Later (TBD) patches may simply store this information in the trace itself. Signed-off-by: Steven Rostedt <srostedt@redhat.com> --- lib/tracing/Kconfig | 1 lib/tracing/trace_function.c | 2 ...

udf_bitmap_lookup never changes, so constify it Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Jan Kara <jack@suse.cz> --- fs/udf/super.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/udf/super.c b/fs/udf/super.c index 3afe764..6bb2a5b 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -1969,7 +1969,7 @@ static int udf_statfs(struct dentry *dentry, struct kstatfs *buf) return 0; } -static unsigned char udf_bitmap_lookup[16] = {...

- move all brelse(ibh) after main if, because it's called on every path except one where ibh is null - move variables to the most inner blocks Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Jan Kara <jack@suse.cz> --- fs/udf/inode.c | 52 +++++++++++++++++++++++----------------------------- 1 files changed, 23 insertions(+), 29 deletions(-) diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 68db2ea..c2d0477 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -1...

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Jan Kara <jack@suse.cz> --- fs/udf/truncate.c | 56 +++++++++++++++++++++------------------------------- 1 files changed, 23 insertions(+), 33 deletions(-) diff --git a/fs/udf/truncate.c b/fs/udf/truncate.c index f64f827..eb98616 100644 --- a/fs/udf/truncate.c +++ b/fs/udf/truncate.c @@ -180,6 +180,24 @@ void udf_discard_prealloc(struct inode *inode) brelse(epos.bh); } +static void udf_update_alloc_ext_desc(struc...

- constify internal crc table - mark udf_crc "in" parameter as const Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Jan Kara <jack@suse.cz> --- fs/udf/crc.c | 4 ++-- fs/udf/udfdecl.h | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/udf/crc.c b/fs/udf/crc.c index b166129..f178c63 100644 --- a/fs/udf/crc.c +++ b/fs/udf/crc.c @@ -23,7 +23,7 @@ #include "udfdecl.h" -static uint16_t crc_table[256] = { +static const uint16_t c...

udf_build_ustr was completely broken when size >= UDF_NAME_LEN - 1 or size < 2 nobody noticed because all callers set size to acceptable values (constants) Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Jan Kara <jack@suse.cz> --- fs/udf/unicode.c | 12 ++++++------ 1 files changed, 6 insertions(+), 6 deletions(-) diff --git a/fs/udf/unicode.c b/fs/udf/unicode.c index f969617..f4e54e5 100644 --- a/fs/udf/unicode.c +++ b/fs/udf/unicode.c @@ -47,16 +47,16 ...

From: Arjan van de Ven <arjan@linux.intel.com> Subject: [PATCH] x86: introduce /dev/mem restrictions with a config option This patch introduces a restriction on /dev/mem: Only non-memory can be read or written unless the newly introduced config option is set. The X server needs access to /dev/mem for the PCI space, but it doesn't need access to memory; both the file permissions and SELinux permissions of /dev/mem just make X effectively super-super powerful. With the exception of the BIOS a...

This patch makes the needlessly global init_tti() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> --- 1e8c2b07be955b181814e4c24366517a66557908 diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c index 5fab7d7..bc94e84 100644 --- a/drivers/net/s2io.c +++ b/drivers/net/s2io.c @@ -1088,7 +1088,7 @@ static int s2io_print_pci_mode(struct s2io_nic *nic) * '-1' on failure */ -int init_tti(struct s2io_nic *nic, int link) +static int init_tti(struct s2io_nic *nic, int link) { ...

This patch fixes the following section mismatches: <-- snip --> ... WARNING: drivers/scsi/qlogicpti.o(.devexit.text+0x8): Section mismatch in reference from the function qpti_sbus_remove() to the function .init.text:qpti_chain_del() WARNING: drivers/scsi/qlogicpti.o(.devinit.text+0x56c): Section mismatch in reference from the function qpti_sbus_probe() to the function .init.text:qpti_map_regs() WARNING: drivers/scsi/qlogicpti.o(.devinit.text+0x580): Section mismatch in reference from the fu...

When you are on x86 what you see as "Freeing unused kernel memory: " cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed --