We're running out of space in the mount options word, and
EXT4_MOUNT_ABORT isn't really a mount option, but a run-time flag. So
move it to become EXT4_MF_FS_ABORTED in s_mount_flags.
Also remove bogus ext2_fs.h / ext4.h simultaneous #include protection,
which can never happen.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This field can be very helpful when a system administrator is trying
to sort through large numbers of block devices or filesystem images.
What is stored in this field can be ambiguous if multiple filesystem
namespaces are in play; what we store in practice is the mountpoint
interpreted by the process's namespace which first opens a file in the
filesystem.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
We can only fit 32 options in s_mount_opt because an unsigned long is
32-bits on a x86 machine. So use an unsigned int to save space on
64-bit platforms.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The EXT4_IOC_MOVE_EXT exchanges the blocks between orig_fd and donor_fd,
and then write the file data of orig_fd to donor_fd.
ext4_mext_move_extent() is the main fucntion of ext4 online defrag,
and this patch includes all functions related to ext4 online defrag.
Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: Takashi Sato <t-sato@yk.jp.nec.com>
Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
drivers/net/cnic.c: In function ‘init_bnx2_cnic’:
drivers/net/cnic.c:2520: error: implicit declaration of function ‘__symbol_get’
drivers/net/cnic.c:2520: warning: assignment makes pointer from integer without a cast
make[1]: *** [drivers/net/cnic.o] Error 1
make: *** [drivers/net/cnic.o] Error 2
Caused by not including linux/module.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Fix cnic build for case of CONFIG_INET=n.
Fix cnic build for case of CONFIG_IPV6=m and CONFIG_CNIC=y.
Fixes these build errors:
cnic.c:(.text+0x236a1d): undefined reference to `ip_route_output_key'
cnic.c:(.text+0x15a8e8): undefined reference to `ip6_route_output'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
The unaligned address exception handler (and others) does not scan the
fixup tables before oopsing. This is bad because it means passing a
badly aligned pointer from user space might crash the kernel.
Fix this by scanning the fixup tables in _exception(). This should
resolve the issue for unaligned addresses as well as other less common
exceptions that might be happening during a userspace access. The page
fault handler already does fixup processing.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
kmemcheck/shadow.c needs to include <linux/module.h> to prevent
the following warnings:
linux-next-20080724/arch/x86/mm/kmemcheck/shadow.c:64: warning : data definition has no type or storage class
linux-next-20080724/arch/x86/mm/kmemcheck/shadow.c:64: warning : type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL'
linux-next-20080724/arch/x86/mm/kmemcheck/shadow.c:64: warning : parameter names (without types) in function declaration
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: vegardno@ifi.uio.no
Cc: penberg@cs.helsinki.fi
Cc: akpm <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
General description: kmemcheck is a patch to the linux kernel that
detects use of uninitialized memory. It does this by trapping every
read and write to memory that was allocated dynamically (e.g. using
kmalloc()). If a memory address is read that has not previously been
written to, a message is printed to the kernel log.
Thanks to Andi Kleen for the set_memory_4k() solution.
Andrew Morton suggested documenting the shadow member of struct page.
Signed-off-by: Vegard Nossum <vegardno@ifi.uio.no>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
[export kmemcheck_mark_initialized]
[build fix for setup_max_cpus]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
[rebased for mainline inclusion]
Signed-off-by: Vegard Nossum <vegardno@ifi.uio.no>
Add the --repeat <n> feature to perf stat, which repeats a given
command up to a 100 times, collects the stats and calculates an
average and a stddev.
For example, the following oneliner 'perf stat' command runs hackbench
5 times and prints a tabulated result of all metrics, with averages
and noise levels (in percentage) printed:
aldebaran:~/linux/linux/tools/perf> ./perf stat --repeat 5 ~/hackbench 10
Time: 0.117
Time: 0.108
Time: 0.089
Time: 0.088
Time: 0.100
Performance counter stats for '/home/mingo/hackbench 10' (5 runs):
1243.989586 task-clock-msecs # 10.460 CPUs ( +- 4.720% )
47706 context-switches # 0.038 M/sec ( +- 19.706% )
387 CPU-migrations # 0.000 M/sec ( +- 3.608% )
17793 page-faults # 0.014 M/sec ( +- 0.354% )
3770941606 cycles # 3031.329 M/sec ( +- 4.621% )
1566372416 instructions # 0.415 IPC ( +- 2.703% )
16783421 cache-references # 13.492 M/sec ( +- 5.202% )
7128590 cache-misses # 5.730 M/sec ( +- 7.420% )
0.118924455 seconds time elapsed.
The goal of this feature is to allow the reliance on these accurate
statistics and to know how many times a command has to be repeated
for the noise to go down to an acceptable level.
(The -v option can be used to see a line printed out as each run progresses.)
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thanks to Sitsofe Wheeler, Randy Dunlap, and Jonathan Corbet for providing
input and feedback on this!
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
- use IPC for the instruction normalization output
- CPUs for the CPU utilization factor value.
- print out time elapsed like the other rows
- tidy up the task-clocks/cpu-clocks printout
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Most boards use 25000000 as the default HZ, so rather than add a whole
bunch more boards, make it the default for everyone. This also fixes
randconfig builds as there was no default before.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The Blackfin arch has a bunch of custom section markings for its on-chip
regions, but they aren't declared in the right header.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Looks like the mutex-dec.h header file was incorrectly copied into the
Blackfin asm path. Nothing uses it, so punt it.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This converts the irq handling in the Blackfin arch from the old irq.h /
system.h method to the new irqflags.h. A stepping stone on the way to
other tracing functionality.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Since U-Boot can support these compression types, add appropriate targets
to the Blackfin boot files.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The older smsc911x driver made platform data optional, but the newer one
always requires it, so add proper settings to the BF548-EZKIT.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The Blackfin SPI driver can be driven by an IRQ now, so declare it in
the board resources.
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Before we configure the early UART, check to make sure we are running on
the expected processor - otherwise, we cause problems by configuring pins
that don't exist (and causing an infinite loop of faults).
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
When a low priority interrupt (like ethernet) is triggered between 2 high
priority IPI messages, a deadlock in disable_irq() is hit by the second
IPI handler. This is because the second IPI message is queued within the
first IPI handler, but the handler doesn't process all messages, and new
ones are inserted rather than appended. So now we process all the pending
messages, and append new ones to the pending list.
URL: http://blackfin.uclinux.org/gf/tracker/5226
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The IRQ functions take an "unsigned long" flags variable, not any other
type, so fix the places where we use "int" or "long".
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Rather than maintain a duplicate list of valid exceptions we can take in
the kernel both in the first if() check and the switch() check, delay the
oops check to after the switch(). All valid exceptions will have returned
by this point leaving only the invalid ones.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The trap_c() code pushes the hardware trace status onto the stack, but
doesn't always restore it when returning from some trap code paths. So
unify the exit code paths to all head to the end of the function.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The KGDB code uses this when switching processors to make sure the icache
is in a valid state.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Since the compiled-for cpu revision can be significant, include it in the
cpuinfo output along side the cpu revision we're currently running on.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
We don't need to handle CPLB protection violations unless we are running
with the MPU on. Fix the entry code to call common trap_c, and remove the
code which is never run. This allows the traps test suite to run on older
boards with the MPU disabled.
URL: http://blackfin.uclinux.org/gf/tracker/5129
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Using atomic_set on an atomic64_t variable gives a compiler
warning on powerpc, and won't give the desired result at runtime.
This fixes an instance of this error in the perf_counter code.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <18995.20490.979429.244883@cargo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
It's can be very annoying to scroll down perf annotated output
until we find relevant overhead.
Using the -l option, you can now have a small summary sorted per
overhead in the beginning of the output.
Example:
./perf annotate -l -k ../../vmlinux -s __lock_acquire
Sorted summary for file ../../vmlinux
----------------------------------------------
12.04 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1653
4.61 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1740
3.77 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1775
3.56 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1653
2.93 /home/fweisbec/linux/linux-2.6-tip/arch/x86/include/asm/irqflags.h:15
2.83 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2545
2.30 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2594
2.20 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2388
2.20 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:730
2.09 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:730
2.09 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:138
1.88 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2548
1.47 /home/fweisbec/linux/linux-2.6-tip/arch/x86/include/asm/irqflags.h:15
1.36 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2594
1.36 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:730
1.26 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1654
1.26 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1653
1.15 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:2592
1.15 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1740
1.15 /home/fweisbec/linux/linux-2.6-tip/kernel/lockdep.c:1740
[...]
Only overhead over 0.5% are summarized.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1244844682-12928-2-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
When we have a colored line in perf annotate, ie a middle/high
overhead one, it's sometimes useful to get the matching line
and filename from the source file, especially this path prepares
to another subsequent one which will print a sorted summary of
midle/high overhead lines in the beginning of the output.
Filename:Lines have the same color than the concerned ip lines.
It can be slow because it relies on addr2line. We could also
use objdump with -l but that implies we would have to bufferize
objdump output and parse it to filter the relevant lines since
we want to print a sorted summary in the beginning.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1244844682-12928-1-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This patch improves ctnetlink event reliability if one broadcast
listener has set the NETLINK_BROADCAST_ERROR socket option.
The logic is the following: if an event delivery fails, we keep
the undelivered events in the missed event cache. Once the next
packet arrives, we add the new events (if any) to the missed
events in the cache and we try a new delivery, and so on. Thus,
if ctnetlink fails to deliver an event, we try to deliver them
once we see a new packet. Therefore, we may lose state
transitions but the userspace process gets in sync at some point.
At worst case, if no events were delivered to userspace, we make
sure that destroy events are successfully delivered. Basically,
if ctnetlink fails to deliver the destroy event, we remove the
conntrack entry from the hashes and we insert them in the dying
list, which contains inactive entries. Then, the conntrack timer
is added with an extra grace timeout of random32() % 15 seconds
to trigger the event again (this grace timeout is tunable via
/proc). The use of a limited random timeout value allows
distributing the "destroy" resends, thus, avoiding accumulating
lots "destroy" events at the same time. Event delivery may
re-order but we can identify them by means of the tuple plus
the conntrack ID.
The maximum number of conntrack entries (active or inactive) is
still handled by nf_conntrack_max. Thus, we may start dropping
packets at some point if we accumulate a lot of inactive conntrack
entries that did not successfully report the destroy event to
userspace.
During my stress tests consisting of setting a very small buffer
of 2048 bytes for conntrackd and the NETLINK_BROADCAST_ERROR socket
flag, and generating lots of very small connections, I noticed
very few destroy entries on the fly waiting to be resend.
A simple way to test this patch consist of creating a lot of
entries, set a very small Netlink buffer in conntrackd (+ a patch
which is not in the git tree to set the BROADCAST_ERROR flag)
and invoke `conntrack -F'.
For expectations, no changes are introduced in this patch.
Currently, event delivery is only done for new expectations (no
events from expectation expiration, removal and confirmation).
In that case, they need a per-expectation event cache to implement
the same idea that is exposed in this patch.
This patch can be useful to provide reliable flow-accouting. We
still have to add a new conntrack extension to store the creation
and destroy time.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This patch adds the hlist_nulls_add_head() function which is
based on hlist_nulls_add_head_rcu() but without the use of
rcu_assign_pointer(). It also adds hlist_nulls_del which is
exactly the same like hlist_nulls_del_rcu().
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
