- 04 May, 2010 3 commits
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Li Zefan authored
Make it clear that event-list is a comma separated list of events. Reported-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> LKML-Reference: <4B2F154C.2060503@cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Borislav Petkov authored
Wrap open-coded WARN_ONCE functionality into the equivalent macro. Signed-off-by: Borislav Petkov <bp@alien8.de> LKML-Reference: <20100502060354.GA5281@liondog.tnic> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Steven Rostedt authored
The ftrace.h file contains several functions as macros when the functions are disabled due to config options. This patch converts most of them to static inlines. There are two exceptions: register_ftrace_function() and unregister_ftrace_function() This is because their parameter "ops" must not be evaluated since code using the function is allowed to #ifdef out the creation of the parameter. This also fixes an error caused by recent changes: kernel/trace/trace_irqsoff.c: In function 'start_irqsoff_tracer': kernel/trace/trace_irqsoff.c:571: error: expected expression before 'do' Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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- 28 Apr, 2010 1 commit
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Steven Rostedt authored
When sleep_time is off the function profiler ignores the time that a task is scheduled out. When the task is scheduled out a timestamp is taken. When the task is scheduled back in, the timestamp is compared to the current time and the saved calltimes are adjusted accordingly. But when stopping the function profiler, the sched switch hook that does this adjustment was stopped before shutting down the tracer. This allowed some tasks to not get their timestamps set when they scheduled out. When the function profiler started again, this would skew the times of the scheduler functions. This patch moves the stopping of the sched switch to after the function profiler is stopped. It also ignores zero set calltimes, which may happen on start up. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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- 27 Apr, 2010 5 commits
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Chase Douglas authored
When combined with function graph tracing the ftrace function profiler also prints the average run time of functions. While this gives us some good information, it doesn't tell us anything about the variance of the run times of the function. This change prints out the s^2 sample standard deviation alongside the average. This change adds one entry to the profile record structure. This increases the memory footprint of the function profiler by 1/3 on a 32-bit system, and by 1/5 on a 64-bit system when function graphing is enabled, though the memory is only allocated when the profiler is turned on. During the profiling, one extra line of code adds the squared calltime to the new record entry, so this should not adversly affect performance. Note that the square of the sample standard deviation is printed because there is no sqrt implementation for unsigned long long in the kernel. Signed-off-by: Chase Douglas <chase.douglas@canonical.com> LKML-Reference: <1272304925-2436-1-git-send-email-chase.douglas@canonical.com> [ fixed comment about ns^2 -> us^2 conversion ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Chase Douglas authored
The mod command went in as commit 64e7c440 The traceon/traceoff commands went in as commit 23b4ff3aSigned-off-by: Chase Douglas <chase.douglas@canonical.com> LKML-Reference: <1272045759-32018-1-git-send-email-chase.douglas@canonical.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Steven Rostedt authored
With the addition of the "missed events" flags that is stored in the commit field of the ring buffer page, the ring_buffer_benchmark was not updated to handle this. If events are missed, then the missed events flag is set in the ring buffer page, the benchmark will count that flag as part of the size of the page and will hit the BUG() when it tries to read beyond the page. The solution is simply to have the ring buffer benchmark mask off the extra bits. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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David Miller authored
When performing a non-consuming read, a synchronize_sched() is performed once for every cpu which is actively tracing. This is very expensive, and can make it take several seconds to open up the 'trace' file with lots of cpus. Only one synchronize_sched() call is actually necessary. What is desired is for all cpus to see the disabling state change. So we transform the existing sequence: for_each_cpu() { ring_buffer_read_start(); } where each ring_buffer_start() call performs a synchronize_sched(), into the following: for_each_cpu() { ring_buffer_read_prepare(); } ring_buffer_read_prepare_sync(); for_each_cpu() { ring_buffer_read_start(); } wherein only the single ring_buffer_read_prepare_sync() call needs to do the synchronize_sched(). The first phase, via ring_buffer_read_prepare(), allocates the 'iter' memory and increments ->record_disabled. In the second phase, ring_buffer_read_prepare_sync() makes sure this ->record_disabled state is visible fully to all cpus. And in the final third phase, the ring_buffer_read_start() calls reset the 'iter' objects allocated in the first phase since we now know that none of the cpus are adding trace entries any more. This makes openning the 'trace' file nearly instantaneous on a sparc64 Niagara2 box with 128 cpus tracing. Signed-off-by: David S. Miller <davem@davemloft.net> LKML-Reference: <20100420.154711.11246950.davem@davemloft.net> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Jiri Olsa authored
Add function graph output to irqsoff tracer. The graph output is enabled by setting new 'display-graph' trace option. Signed-off-by: Jiri Olsa <jolsa@redhat.com> LKML-Reference: <1270227683-14631-4-git-send-email-jolsa@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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- 26 Apr, 2010 2 commits
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Jiri Olsa authored
Let the function graph tracer have custom flags passed to its output functions. Signed-off-by: Jiri Olsa <jolsa@redhat.com> LKML-Reference: <1270227683-14631-3-git-send-email-jolsa@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Jiri Olsa authored
Add ftrace events for graph tracer, so the graph output could be shared with other tracers. Signed-off-by: Jiri Olsa <jolsa@redhat.com> LKML-Reference: <1270227683-14631-2-git-send-email-jolsa@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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- 23 Apr, 2010 1 commit
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Ingo Molnar authored
Merge branch 'tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core
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- 21 Apr, 2010 2 commits
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Frederic Weisbecker authored
The ftrace_dump_on_oops kernel parameter, sysctl and sysrq let one dump every cpu buffers when an oops or panic happens. It's nice when you have few cpus but it may take ages if have many, plus you miss the real origin of the problem in all the cpu traces. Sometimes, all you need is to dump the cpu buffer that triggered the opps, most of the time it is our main interest. This patch modifies ftrace_dump_on_oops to handle this choice. The ftrace_dump_on_oops kernel parameter, when it comes alone, has the same behaviour than before. But ftrace_dump_on_oops=orig_cpu will only dump the buffer of the cpu that oops'ed. Similarly, sysctl kernel.ftrace_dump_on_oops=1 and echo 1 > /proc/sys/kernel/ftrace_dump_on_oops keep their previous behaviour. But setting 2 jumps into cpu origin dump mode. v2: Fix double setup v3: Fix spelling issues reported by Randy Dunlap v4: Also update __ftrace_dump in the selftests Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
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Ingo Molnar authored
Merge reason: pick up latest -rc's. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 19 Apr, 2010 24 commits
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Linus Torvalds authored
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Rik van Riel authored
The recent anon_vma fixes cause many anonymous pages to end up in the parent process anon_vma, even when the page is exclusively owned by the current process. Adding exclusively owned anonymous pages to the top anon_vma reduces rmap scanning overhead, especially in workloads with forking servers. This patch adds a parameter to __page_set_anon_rmap that can be used to indicate whether or not the added page is exclusively owned by the current process. Pages added through page_add_new_anon_rmap are exclusively owned by the current process, and can be added to the top anon_vma. Pages added through page_add_anon_rmap can be either shared or exclusively owned, so we do the conservative thing and add it to the oldest anon_vma. A next step would be to add the exclusive parameter to page_add_anon_rmap, to be used from functions where we do know for sure whether a page is exclusively owned. Signed-off-by: Rik van Riel <riel@redhat.com> Reviewed-by: Johannes Weiner <hannes@cmpxchg.org> Lightly-tested-by: Borislav Petkov <bp@alien8.de> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> [ Edited to look nicer - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6: eCryptfs: Turn lower lookup error messages into debug messages eCryptfs: Copy lower directory inode times and size on link ecryptfs: fix use with tmpfs by removing d_drop from ecryptfs_destroy_inode ecryptfs: fix error code for missing xattrs in lower fs eCryptfs: Decrypt symlink target for stat size eCryptfs: Strip metadata in xattr flag in encrypted view eCryptfs: Clear buffer before reading in metadata xattr eCryptfs: Rename ecryptfs_crypt_stat.num_header_bytes_at_front eCryptfs: Fix metadata in xattr feature regression
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Tyler Hicks authored
Vaugue warnings about ENAMETOOLONG errors when looking up an encrypted file name have caused many users to become concerned about their data. Since this is a rather harmless condition, I'm moving this warning to only be printed when the ecryptfs_verbosity module param is 1. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
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Tyler Hicks authored
The timestamps and size of a lower inode involved in a link() call was being copied to the upper parent inode. Instead, we should be copying lower parent inode's timestamps and size to the upper parent inode. I discovered this bug using the POSIX test suite at Tuxera. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
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Jeff Mahoney authored
Since tmpfs has no persistent storage, it pins all its dentries in memory so they have d_count=1 when other file systems would have d_count=0. ->lookup is only used to create new dentries. If the caller doesn't instantiate it, it's freed immediately at dput(). ->readdir reads directly from the dcache and depends on the dentries being hashed. When an ecryptfs mount is mounted, it associates the lower file and dentry with the ecryptfs files as they're accessed. When it's umounted and destroys all the in-memory ecryptfs inodes, it fput's the lower_files and d_drop's the lower_dentries. Commit 4981e081 added this and a d_delete in 2008 and several months later commit caeeeecf removed the d_delete. I believe the d_drop() needs to be removed as well. The d_drop effectively hides any file that has been accessed via ecryptfs from the underlying tmpfs since it depends on it being hashed for it to be accessible. I've removed the d_drop on my development node and see no ill effects with basic testing on both tmpfs and persistent storage. As a side effect, after ecryptfs d_drops the dentries on tmpfs, tmpfs BUGs on umount. This is due to the dentries being unhashed. tmpfs->kill_sb is kill_litter_super which calls d_genocide to drop the reference pinning the dentry. It skips unhashed and negative dentries, but shrink_dcache_for_umount_subtree doesn't. Since those dentries still have an elevated d_count, we get a BUG(). This patch removes the d_drop call and fixes both issues. This issue was reported at: https://bugzilla.novell.com/show_bug.cgi?id=567887Reported-by: Árpád Bíró <biroa@demasz.hu> Signed-off-by: Jeff Mahoney <jeffm@suse.com> Cc: Dustin Kirkland <kirkland@canonical.com> Cc: stable@kernel.org Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
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Christian Pulvermacher authored
If the lower file system driver has extended attributes disabled, ecryptfs' own access functions return -ENOSYS instead of -EOPNOTSUPP. This breaks execution of programs in the ecryptfs mount, since the kernel expects the latter error when checking for security capabilities in xattrs. Signed-off-by: Christian Pulvermacher <pulvermacher@gmx.de> Cc: stable@kernel.org Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
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Tyler Hicks authored
Create a getattr handler for eCryptfs symlinks that is capable of reading the lower target and decrypting its path. Prior to this patch, a stat's st_size field would represent the strlen of the encrypted path, while readlink() would return the strlen of the decrypted path. This could lead to confusion in some userspace applications, since the two values should be equal. https://bugs.launchpad.net/bugs/524919Reported-by: Loïc Minier <loic.minier@canonical.com> Cc: stable@kernel.org Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
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Linus Torvalds authored
Commit b91ecb00 ("gigaset: include cleanup cleanup") removed an implicit sched.h inclusion that came in via slab.h, and caused various compile problems as a result. This should fix it. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: Make RCU lockdep check the lockdep_recursion variable rcu: Update docs for rcu_access_pointer and rcu_dereference_protected rcu: Better explain the condition parameter of rcu_dereference_check() rcu: Add rcu_access_pointer and rcu_dereference_protected
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: gigaset: include cleanup cleanup packet : remove init_net restriction WAN: flush tx_queue in hdlc_ppp to prevent panic on rmmod hw_driver. ip: Fix ip_dev_loopback_xmit() net: dev_pick_tx() fix fib: suppress lockdep-RCU false positive in FIB trie. tun: orphan an skb on tx forcedeth: fix tx limit2 flag check iwlwifi: work around bogus active chains detection
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6Linus Torvalds authored
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/radeon/kms: add FireMV 2400 PCI ID. drm/radeon/kms: allow R500 regs VAP_ALT_NUM_VERTICES and VAP_INDEX_OFFSET drivers/gpu/radeon: Add MSPOS regs to safe list. drm/radeon/kms: disable the tv encoder when tv/cv is not in use drm/radeon/kms: adjust pll settings for tv drm/radeon/kms: fix tv dac conflict resolver drm/radeon/kms/evergreen: don't enable hdmi audio stuff drm/radeon/kms/atom: fix dual-link DVI on DCE3.2/4.0 drm/radeon/kms: fix rs600 tlb flush drm/radeon/kms: print GPU family and device id when loading drm/radeon/kms: fix calculation of mipmapped 3D texture sizes drm/radeon/kms: only change mode when coherent value changes. drm/radeon/kms: more atom parser fixes (v2)
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Linus Torvalds authored
* master.kernel.org:/home/rmk/linux-2.6-arm: ARM: 5974/1: arm/mach-at91 Makefile: remove two blanks. ARM: 6052/1: kdump: make kexec work in interrupt context ARM: 6051/1: VFP: preserve the HW context when calling signal handlers ARM: 6050/1: VFP: fix the SMP versions of vfp_{sync,flush}_hwstate ARM: 6007/1: fix highmem with VIPT cache and DMA ARM: 5975/1: AT91 slow-clock suspend: don't wait when turning PLLs off
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Dave Airlie authored
This is an M24/X600 chip. From RH# 581927 cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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Paul E. McKenney authored
The lockdep facility temporarily disables lockdep checking by incrementing the current->lockdep_recursion variable. Such disabling happens in NMIs and in other situations where lockdep might expect to recurse on itself. This patch therefore checks current->lockdep_recursion, disabling RCU lockdep splats when this variable is non-zero. In addition, this patch removes the "likely()", as suggested by Lai Jiangshan. Reported-by: Frederic Weisbecker <fweisbec@gmail.com> Reported-by: David Miller <davem@davemloft.net> Tested-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: laijs@cn.fujitsu.com Cc: dipankar@in.ibm.com Cc: mathieu.desnoyers@polymtl.ca Cc: josh@joshtriplett.org Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org Cc: rostedt@goodmis.org Cc: Valdis.Kletnieks@vt.edu Cc: dhowells@redhat.com Cc: eric.dumazet@gmail.com LKML-Reference: <20100415195039.GA22623@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Marek Olšák authored
[airlied: fix V_A_N_V to not be safe and fix check to make sure only r500 - bump userspace version] Signed-off-by: Marek Olšák <maraeo@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Corbin Simpson authored
Permits MSAA and D3D-style rasterization. [airlied: add rs600] Signed-off-by: Corbin Simpson <MostAwesomeDude@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored
Switching between TV and VGA caused VGA to break on some systems since the TV encoder was left enabled when VGA was used. fixes fdo bug 25520. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored
May fix fdo bug 26582. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored
On systems with the tv dac shared between DVI and TV, we can only use the dac for one of the connectors. However, when using a digital monitor on the DVI port, you can use the dac for the TV connector just fine. Check the use_digital status when resolving the conflict. Fixes fdo bug 27649, possibly others. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored
Got broken during the evergreen merge. Fixes fdo bug 27001. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Jerome Glisse authored
Typo in in flush leaded to no flush of the RS600 tlb which ultimately leaded to massive system ram corruption, with this patch everythings seems to work properly. Signed-off-by: Jerome Glisse <jglisse@redhat.com> Cc: stable <stable@kernel.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Jerome Glisse authored
This will help figuring out GPU when looking at bugs log. Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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- 18 Apr, 2010 1 commit
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Tilman Schmidt authored
Commit 5a0e3ad6 causes slab.h to be included twice in many of the Gigaset driver's source files, first via the common include file gigaset.h and then a second time directly. Drop the spares, and use the opportunity to clean up a few more similar cases. Impact: cleanup, no functional change Signed-off-by: Tilman Schmidt <tilman@imap.cc> CC: Tejun Heo <tj@kernel.org> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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- 17 Apr, 2010 1 commit
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git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intelLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: drm/i915: Ignore LVDS EDID when it is unavailabe or invalid drm/i915: Add no_lvds entry for the Clientron U800 drm/i915: Rename many remaining uses of "output" to encoder or connector. drm/i915: Rename intel_output to intel_encoder. agp/intel: intel_845_driver is an agp driver! drm/i915: introduce to_intel_bo helper drm/i915: Disable FBC on 915GM and 945GM.
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