Commit Graph

91 Commits

Author SHA1 Message Date
David Woodhouse
0107b3cf32 Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-06-18 08:36:46 +01:00
Ingo Molnar
caf2857ac6 [PATCH] timer exit cleanup
Do all timer zapping in exit_itimers.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-17 10:03:50 -07:00
Jan Kara
6df3cecbb9 [PATCH] cond_resched_lock() fix
On one path, cond_resched_lock() fails to return true if it dropped the lock.
We think this might be causing the crashes in JBD's log_do_checkpoint().

Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-13 20:58:58 -07:00
David Woodhouse
1c3f45ab2f Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-06-02 16:39:11 +01:00
Roman Zippel
ae92ef8a44 [PATCH] flush icache in correct context
flush_icache_range() is used in two different situation - in binfmt_elf.c &
co for user space mappings and module.c for kernel modules.  On m68k
flush_icache_range() doesn't know which data to flush, as it has separate
address spaces and the pointer argument can be valid in either address
space.

First I considered splitting flush_icache_range(), but this patch is
simpler.  Setting the correct context gives flush_icache_range() enough
information to flush the correct data.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-31 14:54:18 -07:00
John Hawkes
b60c1f6ffd [PATCH] drop note_interrupt() for per-CPU for proper scaling
The "unhandled interrupts" catcher, note_interrupt(), increments a global
desc->irq_count and grossly damages scaling of very large systems, e.g.,
>192p ia64 Altix, because of this highly contented cacheline, especially
for timer interrupts.  384p is severely crippled, and 512p is unuseable.

All calls to note_interrupt() can be disabled by booting with "noirqdebug",
but this disables the useful interrupt checking for all interrupts.

I propose eliminating note_interrupt() for all per-CPU interrupts.  This
was the behavior of linux-2.6.10 and earlier, but in 2.6.11 a code
restructuring added a call to note_interrupt() for per-CPU interrupts.
Besides, note_interrupt() is a bit racy for concurrent CPU calls anyway, as
the desc->irq_count++ increment isn't atomic (which, if done, would make
scaling even worse).

Signed-off-by: John Hawkes <hawkes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28 11:14:00 -07:00
Paul Jackson
2efe86b809 [PATCH] cpuset exit NULL dereference fix
There is a race in the kernel cpuset code, between the code
to handle notify_on_release, and the code to remove a cpuset.
The notify_on_release code can end up trying to access a
cpuset that has been removed.  In the most common case, this
causes a NULL pointer dereference from the routine cpuset_path.
However all manner of bad things are possible, in theory at least.

The existing code decrements the cpuset use count, and if the
count goes to zero, processes the notify_on_release request,
if appropriate.  However, once the count goes to zero, unless we
are holding the global cpuset_sem semaphore, there is nothing to
stop another task from immediately removing the cpuset entirely,
and recycling its memory.

The obvious fix would be to always hold the cpuset_sem
semaphore while decrementing the use count and dealing with
notify_on_release.  However we don't want to force a global
semaphore into the mainline task exit path, as that might create
a scaling problem.

The actual fix is almost as easy - since this is only an issue
for cpusets using notify_on_release, which the top level big
cpusets don't normally need to use, only take the cpuset_sem
for cpusets using notify_on_release.

This code has been run for hours without a hiccup, while running
a cpuset create/destroy stress test that could crash the existing
kernel in seconds.  This patch applies to the current -linus
git kernel.

Signed-off-by: Paul Jackson <pj@sgi.com>
Acked-by: Simon Derr <simon.derr@bull.net>
Acked-by: Dinakar Guniguntala <dino@in.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-27 08:07:26 -07:00
David Woodhouse
8f37d47c9b AUDIT: Record working directory when syscall arguments are pathnames
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-27 12:17:28 +01:00
David Woodhouse
7551ced334 AUDIT: Defer freeing aux items until audit_free_context()
While they were all just simple blobs it made sense to just free them
as we walked through and logged them. Now that there are pointers to
other objects which need refcounting, we might as well revert to
_only_ logging them in audit_log_exit(), and put the code to free them
properly in only one place -- in audit_free_aux().

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
----------------------------------------------------------
2005-05-26 12:04:57 +01:00
Kirill Korotaev
c33880aadd [PATCH] sigkill priority fix
If SIGKILL does not have priority, we cannot instantly kill task before it
makes some unexpected job.  It can be critical, but we were unable to
reproduce this easily until Heiko Carstens <Heiko.Carstens@de.ibm.com>
reported this problem on LKML.

Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-Off-By: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-24 20:08:13 -07:00
David Woodhouse
99e45eeac8 AUDIT: Escape comm when logging task info
It comes from the user; it needs to be escaped.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-23 21:57:41 +01:00
David Woodhouse
bccf6ae083 AUDIT: Unify auid reporting, put arch before syscall number
These changes make processing of audit logs easier. Based on a patch
from Steve Grubb <sgrubb@redhat.com>

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-23 21:35:28 +01:00
David Woodhouse
bfb4496e72 AUDIT: Assign serial number to non-syscall messages
Move audit_serial() into audit.c and use it to generate serial numbers 
on messages even when there is no audit context from syscall auditing.  
This allows us to disambiguate audit records when more than one is 
generated in the same millisecond.

Based on a patch by Steve Grubb after he observed the problem.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-21 21:08:09 +01:00
Samuel Thibault
10f02d1c59 [PATCH] spin_unlock_bh() and preempt_check_resched()
In _spin_unlock_bh(lock):
	do { \
		_raw_spin_unlock(lock); \
		preempt_enable(); \
		local_bh_enable(); \
		__release(lock); \
	} while (0)

there is no reason for using preempt_enable() instead of a simple
preempt_enable_no_resched()

Since we know bottom halves are disabled, preempt_schedule() will always
return at once (preempt_count!=0), and hence preempt_check_resched() is
useless here...

This fixes it by using "preempt_enable_no_resched()" instead of the
"preempt_enable()", and thus avoids the useless preempt_check_resched()
just before re-enabling bottom halves.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-21 10:46:48 -07:00
Steve Grubb
326e9c8ba6 AUDIT: Fix inconsistent use of loginuid vs. auid, signed vs. unsigned
The attached patch changes all occurrences of loginuid to auid. It also 
changes everything to %u that is an unsigned type.

Signed-off-by: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-21 00:22:31 +01:00
Steve Grubb
05474106a4 AUDIT: Fix AVC_USER message passing.
The original AVC_USER message wasn't consolidated with the new range of
user messages. The attached patch fixes the kernel so the old messages 
work again.

Signed-off-by: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-21 00:18:37 +01:00
Stephen Smalley
011161051b AUDIT: Avoid sleeping function in SElinux AVC audit.
This patch changes the SELinux AVC to defer logging of paths to the audit
framework upon syscall exit, by saving a reference to the (dentry,vfsmount)
pair in an auxiliary audit item on the current audit context for processing
by audit_log_exit.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-21 00:15:52 +01:00
Paul Jackson
b39c4fab25 [PATCH] cpusets+hotplug+preepmt broken
This patch removes the entwining of cpusets and hotplug code in the "No
more Mr.  Nice Guy" case of sched.c move_task_off_dead_cpu().

Since the hotplug code is holding a spinlock at this point, we cannot take
the cpuset semaphore, cpuset_sem, as would seem to be required either to
update the tasks cpuset, or to scan up the nested cpuset chain, looking for
the nearest cpuset ancestor that still has some CPUs that are online.  So
we just punt and blast the tasks cpus_allowed with all bits allowed.

This reverts these lines of code to what they were before the cpuset patch.
 And it updates the cpuset Doc file, to match.

The one known alternative to this that seems to work came from Dinakar
Guniguntala, and required the hotplug code to take the cpuset_sem semaphore
much earlier in its processing.  So far as we know, the increased locking
entanglement between cpusets and hot plug of this alternative approach is
not worth doing in this case.

Signed-off-by: Paul Jackson <pj@sgi.com>
Acked-by: Nathan Lynch <ntl@pobox.com>
Acked-by: Dinakar Guniguntala <dino@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:19 -07:00
David Woodhouse
fb19b4c6aa AUDIT: Honour audit_backlog_limit again.
The limit on the number of outstanding audit messages was inadvertently
removed with the switch to queuing skbs directly for sending by a kernel
thread. Put it back again.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-19 14:55:56 +01:00
David Woodhouse
7063e6c717 Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-05-19 11:54:00 +01:00
David Woodhouse
7ca0026495 AUDIT: Quis Custodiet Ipsos Custodes?
Nobody does. Really, it gets very silly if auditd is recording its
own actions.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-19 11:23:13 +01:00
David Woodhouse
b7d1125817 AUDIT: Send netlink messages from a separate kernel thread
netlink_unicast() will attempt to reallocate and will free messages if
the socket's rcvbuf limit is reached unless we give it an infinite 
timeout. So do that, from a kernel thread which is dedicated to spewing
stuff up the netlink socket.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-19 10:56:58 +01:00
Steve Grubb
168b717395 AUDIT: Clean up logging of untrusted strings
* If vsnprintf returns -1, it will mess up the sk buffer space accounting. 
This is fixed by not calling skb_put with bogus len values.

* audit_log_hex was a loop that called audit_log_vformat with %02X for each 
character. This is very inefficient since conversion from unsigned character 
to Ascii representation is essentially masking, shifting, and byte lookups. 
Also, the length of the converted string is well known - it's twice the 
original. Fixed by rewriting the function.

* audit_log_untrustedstring had no comments. This makes it hard for 
someone to understand what the string format will be.

* audit_log_d_path was never fixed to use untrustedstring. This could mess
up user space parsers. This was fixed to make a temp buffer, call d_path, 
and log temp buffer using untrustedstring. 

From: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-19 10:24:22 +01:00
David Woodhouse
209aba0324 AUDIT: Treat all user messages identically.
It's silly to have to add explicit entries for new userspace messages
as we invent them. Just treat all messages in the user range the same.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-18 10:21:07 +01:00
David Brownell
82428b62aa [PATCH] Driver Core: pm diagnostics update, check for errors
This patch includes various tweaks in the messaging that appears during
system pm state transitions:

  * Warn about certain illegal calls in the device tree, like resuming
    child before parent or suspending parent before child.  This could
    happen easily enough through sysfs, or in some cases when drivers
    use device_pm_set_parent().

  * Be more consistent about dev_dbg() tracing ... do it for resume() and
    shutdown() too, and never if the driver doesn't have that method.

  * Say which type of system sleep state is being entered.

Except for the warnings, these only affect debug messaging.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-17 14:54:54 -07:00
William Lee Irwin III
dfaa9c94b1 [PATCH] profile.c: `schedule' parsing fix
profile=schedule parsing is not quite what it should be.  First, str[7] is
'e', not ',', but then even if it did fall through, prof_on =
SCHED_PROFILING would be clobbered inside if (get_option(...)) So a small
amount of rearrangement is done in this patch to correct it.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:21 -07:00
Matt Mackall
3c0547ba8b [PATCH] add_preferred_console() build fix
Move add_preferred_console out of CONFIG_PRINTK so serial console does the
right thing.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:19 -07:00
Zhang, Yanmin
4f167fb491 [PATCH] spurious interrupt fix
On my IA64 machine, after kernel 2.6.12-rc3 boots, an edge-triggered
interrupt (IRQ 46) keeps triggered over and over again.  There is no IRQ 46
interrupt action handler.  It has lots of impact on performance.

Kernel 2.6.10 and its prior versions have no the problem.  Basically,
kernel 2.6.10 will mask the spurious edge interrupt if the interrupt is
triggered for the second time and its status includes
IRQ_DISABLE|IRQ_PENDING.

Originally, IA64 kernel has its own specific _irq_desc definitions in file
arch/ia64/kernel/irq.c.  The definition initiates _irq_desc[irq].status to
IRQ_DISABLE.  Since kernel 2.6.11, it was moved to architecture independent
codes, i.e.  kernel/irq/handle.c, but kernel/irq/handle.c initiates
_irq_desc[irq].status to 0 instead of IRQ_DISABLE.

Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:18 -07:00
David Woodhouse
3ec3b2fba5 AUDIT: Capture sys_socketcall arguments and sockaddrs
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-17 12:08:48 +01:00
David Woodhouse
5e014b10ef AUDIT: fix max_t thinko.
Der... if you use max_t it helps if you give it a type. 

Note to self: Always just apply the tested patches, don't try to port 
them by hand. You're not clever enough.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-13 18:50:33 +01:00
Steve Grubb
23f32d18aa AUDIT: Fix some spelling errors
I'm going through the kernel code and have a patch that corrects 
several spelling errors in comments.

From: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-13 18:35:15 +01:00
Steve Grubb
c04049939f AUDIT: Add message types to audit records
This patch adds more messages types to the audit subsystem so that audit 
analysis is quicker, intuitive, and more useful.

Signed-off-by: Steve Grubb <sgrubb@redhat.com>
---
I forgot one type in the big patch. I need to add one for user space 
originating SE Linux avc messages. This is used by dbus and nscd.

-Steve
---
Updated to 2.6.12-rc4-mm1.
-dwmw2

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-13 18:17:42 +01:00
David Woodhouse
9ea74f0655 AUDIT: Round up audit skb expansion to AUDIT_BUFSIZ.
Otherwise, we will be repeatedly reallocating, even if we're only
adding a few bytes at a time. Pointed out by Steve Grubb.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-13 16:35:19 +01:00
Chris Wright
c1b773d87e Add audit_log_type
Add audit_log_type to allow callers to specify type and pid when logging.
Convert audit_log to wrapper around audit_log_type.  Could have
converted all audit_log callers directly, but common case is default
of type AUDIT_KERNEL and pid 0.  Update audit_log_start to take type
and pid values when creating a new audit_buffer.  Move sequences that
did audit_log_start, audit_log_format, audit_set_type, audit_log_end,
to simply call audit_log_type directly.  This obsoletes audit_set_type
and audit_set_pid, so remove them.

Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-11 10:55:10 +01:00
Chris Wright
197c69c6af Move ifdef CONFIG_AUDITSYSCALL to header
Remove code conditionally dependent on CONFIG_AUDITSYSCALL from audit.c.
Move these dependencies to audit.h with the rest.

Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-11 10:54:05 +01:00
Chris Wright
804a6a49d8 Audit requires CONFIG_NET
Audit now actually requires netlink.  So make it depend on CONFIG_NET, 
and remove the inline dependencies on CONFIG_NET.

Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-11 10:52:45 +01:00
Chris Wright
5a241d7703 AUDIT: Properly account for alignment difference in nlmsg_len.
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-11 10:43:07 +01:00
David Woodhouse
eecb0a7338 AUDIT: Fix abuse of va_args.
We're not allowed to use args twice; we need to use va_copy.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-10 18:58:51 +01:00
David Woodhouse
e3b926b4c1 AUDIT: pass size argument to audit_expand().
Let audit_expand() know how much it's expected to grow the buffer, in 
the case that we have that information to hand.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-10 18:56:08 +01:00
Steve Grubb
8c5aa40c94 AUDIT: Fix reported length of audit messages.
We were setting nlmsg_len to skb->len, but we should be subtracting
the size of the header.

From: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-10 18:53:07 +01:00
David Woodhouse
4332bdd332 AUDIT: Honour gfp_mask in audit_buffer_alloc()
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-06 15:59:57 +01:00
Chris Wright
5ac52f33b6 AUDIT: buffer audit msgs directly to skb
Drop the use of a tmp buffer in the audit_buffer, and just buffer
directly to the skb.  All header data that was temporarily stored in
the audit_buffer can now be stored directly in the netlink header in
the skb.  Resize skb as needed.  This eliminates the extra copy (and
the audit_log_move function which was responsible for copying).

Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-06 15:54:53 +01:00
Chris Wright
8fc6115c2a AUDIT: expand audit tmp buffer as needed
Introduce audit_expand and make the audit_buffer use a dynamic buffer
which can be resized.  When audit buffer is moved to skb it will not
be fragmented across skb's, so we can eliminate the sklist in the
audit_buffer.  During audit_log_move, we simply copy the full buffer
into a single skb, and then audit_log_drain sends it on.

Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-06 15:54:17 +01:00
Chris Wright
16e1904e69 AUDIT: Add helper functions to allocate and free audit_buffers.
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-06 15:53:34 +01:00
Steve Grubb
c2f0c7c356 The attached patch addresses the problem with getting the audit daemon
shutdown credential information. It creates a new message type 
AUDIT_TERM_INFO, which is used by the audit daemon to query who issued the 
shutdown. 

It requires the placement of a hook function that gathers the information. The 
hook is after the DAC & MAC checks and before the function returns. Racing 
threads could overwrite the uid & pid - but they would have to be root and 
have policy that allows signalling the audit daemon. That should be a 
manageable risk.

The userspace component will be released later in audit 0.7.2. When it 
receives the TERM signal, it queries the kernel for shutdown information. 
When it receives it, it writes the message and exits. The message looks 
like this:

type=DAEMON msg=auditd(1114551182.000) auditd normal halt, sending pid=2650 
uid=525, auditd pid=1685

Signed-off-by: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-06 12:38:39 +01:00
Domen Puncer
ebe8b54134 [PATCH] correctly name the Shell sort
As per http://www.nist.gov/dads/HTML/shellsort.html, this should be
referred to as a Shell sort.  Shell-Metzner is a misnomer.

Signed-off-by: Daniel Dickman <didickman@yahoo.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:50 -07:00
Paulo Marques
b7e4e85337 [PATCH] setitimer timer expires too early
It seems that the code responsible for this is in kernel/itimer.c:126:

	p->signal->real_timer.expires = jiffies + interval;
	add_timer(&p->signal->real_timer);

If you request an interval of, lets say 900 usecs, the interval given by
timeval_to_jiffies will be 1.

If you request this when we are half-way between two timer ticks, the
interval will only give 400 usecs.

If we want to guarantee that we never ever give intervals less than
requested, the simple solution would be to change that to:

	p->signal->real_timer.expires = jiffies + interval + 1;

This however will produce pathological cases, like having a idle system
being requested 1 ms timeouts will give systematically 2 ms timeouts,
whereas currently it simply gives a few usecs less than 1 ms.

The complex (and more computationally expensive) solution would be to
check the gettimeofday time, and compute the correct number of jiffies.
This way, if we request a 300 usecs timer 200 usecs inside the timer
tick, we can wait just one tick, but not if we are 800 usecs inside the
tick. This would also mean that we would have to lock preemption during
these computations to avoid races, etc.

I've searched the archives but couldn't find this particular issue being
discussed before.

Attached is a patch to do the simple solution, in case anybody thinks
that it should be used.

Signed-Off-By: Paulo Marques <pmarques@grupopie.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:41 -07:00
Ananth N Mavinakayanahalli
64f562c6df [PATCH] kprobes: Allow multiple kprobes at the same address
Allow registration of multiple kprobes at an address in an architecture
agnostic way.  Corresponding handlers will be invoked in a sequence.  But,
a kprobe and a jprobe can't (yet) co-exist at the same address.

Signed-off-by: Ananth N Mavinakayanahalli <amavin@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:39 -07:00
Prasanna S Panchamukhi
04dea5f932 [PATCH] Kprobes: Oops! in unregister_kprobe()
kernel oops!  when unregister_kprobe() is called on a non-registered
kprobe.  This patch fixes the above problem by checking if the probe exists
before unregistering.

Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:39 -07:00
Anton Blanchard
7d12e522ba [PATCH] ppc64: remove hidden -fno-omit-frame-pointer for schedule.c
While looking at code generated by gcc4.0 I noticed some functions still
had frame pointers, even after we stopped ppc64 from defining
CONFIG_FRAME_POINTER.  It turns out kernel/Makefile hardwires
-fno-omit-frame-pointer on when compiling schedule.c.

Create CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER and define it on architectures
that dont require frame pointers in sched.c code.

(akpm: blame me for the name)

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-05 16:36:32 -07:00