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1/1 [
Author: Liang Li
Email: liang.li@windriver.com
Subject: perf: add SLANG_INC for slang.h
Date: Wed, 22 Aug 2012 16:04:50 +0800
CFLAGS was previously hard coded to contain "-I/usr/include/slang" to
work with hosts that have "/usr/include/slang/slang.h" as well as hosts
that have "/usr/include/slang.h". This path can cause compile warnings
like:
cc1: warning: '/usr/include/slang' doesn't exists.
or
cc1: warning: include location "/usr/include/slang" is unsafe for
cross-compilation [-Wpoison-system-directories]
Then in some cases warnings become errors if WERROR is enabled hence
build errors.
To fix this issue, we can use -idirafter to downgrade the priority of the
default hard coded path. We can also make the slang include directory
a variable, to allow the user to specify SLANG_INC and set their own
include location. And add a '=' prefix to indicate better
compatibility with sysroot/cross compile cases.
Signed-off-by: Liang Li <liang.li@windriver.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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1/1 [
Author: Bruce Ashfield
Email: bruce.ashfield@windriver.com
Subject: unionfs: restore FD_* utility defines
Date: Tue, 21 Aug 2012 22:14:49 -0400
commit 27cd8f513 [posix_types.h: Cleanup stale __NFDBITS and related definition]
removes the defintions for:
#define NFDBITS __NFDBITS
#define FD_SETSIZE __FD_SETSIZE
#define FD_SET(fd,fdsetp) __FD_SET(fd,fdsetp)
#define FD_CLR(fd,fdsetp) __FD_CLR(fd,fdsetp)
#define FD_ISSET(fd,fdsetp) __FD_ISSET(fd,fdsetp)
#define FD_ZERO(fdsetp) __FD_ZERO(fdsetp)
Which are still used by unionfs. We restore them to union.h for local use
by unionfs until full replacements are found.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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Updating the 00-README with fixes and updates from Darren Hart's
review of the initial patch.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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1/1 [
Author: Liang Li
Email: liang.li@windriver.com
Subject: unionfs: update unionfs fork to align with mainline
Date: Thu, 16 Aug 2012 21:25:01 +0800
mainline commit 0145acc [vfs: uninline full_name_hash] changes the
interface to full_name_hash, so unionfs fork must be updated.
Otherwise unionfs might have the odd behavior that newly created
directories/files in unionfs won't show up in underlying fs properly.
This also implies that 0145acc fixes the corner issue/regression that
introduced by mainline commit bfcfaa7 [vfs: use 'unsigned long'
accesses for dcache name comparison and hashing] and e419b4c [vfs:
make word-at-a-time accesses handle a non-existing page], that newly
adopted fast hash function might have hash collision issue on x86.
Signed-off-by: Liang Li <liang.li@windriver.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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Enable Single Root PCI I/O Virtualization feature.
Signed-off-by: Kishore Bodke <kishore.k.bodke@intel.com>
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Add Single Root PCI I/O Virtualization feature to meta.
Signed-off-by: Kishore Bodke <kishore.k.bodke@intel.com>
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Since this BSP now uses 3.4.x kernel, this option is obsolete
and generates a warning. The option was removed in mainline:
commit 7c5763b8453a94871d356f20df30f350f8631e8b
Author: Fabio Estevam <festevam@gmail.com>
Date: Tue Jan 24 02:11:25 2012 -0200
drivers: misc: Remove MISC_DEVICES config option
as of v3.3-rc4 and so is gone in v3.4.x codebase.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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Initial checkin for the new Crystal Forest Machine Branch.
This Machine is based on Sandybridge CPU and Cave Creek Chipset.
Signed-off-by: Kishore Bodke <kishore.k.bodke@intel.com>
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qemuppc had some old profiling options in its BSP configuration
fragments. These are better pulled from the profiling feature.
This also removes a warning when options like CONFIG_FRAME_POINTER
are dropped from the final .config (since they are not available
on the arch).
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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1/2 [
Author: Ananth N Mavinakayanahalli
Email: ananth@in.ibm.com
Subject: powerpc: Add trap_nr to thread_struct
Date: Wed, 25 Jul 2012 19:19:02 +0000
http://patchwork.ozlabs.org/patch/173338/
Add thread_struct.trap_nr and use it to store the last exception
the thread experienced. In this patch, we populate the field at
various places where we force_sig_info() to the process.
This is also used in uprobes to determine if the probed instruction
caused an exception.
Patch applies on the current master branch of Linus' tree (bdc0077af)
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
2/2 [
Author: Ananth N Mavinakayanahalli
Email: ananth@in.ibm.com
Subject: powerpc: Uprobes port to powerpc
Date: Wed, 25 Jul 2012 19:20:29 +0000
http://patchwork.ozlabs.org/patch/173343/
This is the port of uprobes to powerpc. Usage is similar to x86.
[root@xxxx ~]# ./bin/perf probe -x /lib64/libc.so.6 malloc
Added new event:
probe_libc:malloc (on 0xb4860)
You can now use it in all perf tools, such as:
perf record -e probe_libc:malloc -aR sleep 1
[root@xxxx ~]# ./bin/perf record -e probe_libc:malloc -aR sleep 20
[ perf record: Woken up 22 times to write data ]
[ perf record: Captured and wrote 5.843 MB perf.data (~255302 samples) ]
[root@xxxx ~]# ./bin/perf report --stdio
...
69.05% tar libc-2.12.so [.] malloc
28.57% rm libc-2.12.so [.] malloc
1.32% avahi-daemon libc-2.12.so [.] malloc
0.58% bash libc-2.12.so [.] malloc
0.28% sshd libc-2.12.so [.] malloc
0.08% irqbalance libc-2.12.so [.] malloc
0.05% bzip2 libc-2.12.so [.] malloc
0.04% sleep libc-2.12.so [.] malloc
0.03% multipathd libc-2.12.so [.] malloc
0.01% sendmail libc-2.12.so [.] malloc
0.01% automount libc-2.12.so [.] malloc
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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To ensure that the kernel is debugable by default, and that self tests
pass, we should enable KDB, and KDB_KEYBOARD and KGDB_LOW_LEVEL_TRAP
for x86 boards.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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1/6 [
Author: Al Viro
Email: viro@zeniv.linux.org.uk
Subject: move key_repace_session_keyring() into tracehook_notify_resume()
Date: Wed, 23 May 2012 14:44:37 -0400
commit a42c6ded827dbd396d2efde7530620be029a72d1 upstream.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[Pb: dropped changes to archs lacking TIF_NOTIFY_RESUME: microblaze,
m68k, um, xtensa, score]
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
2/6 [
Author: Oleg Nesterov
Email: oleg@redhat.com
Subject: task_work_add: generic process-context callbacks
Date: Fri, 11 May 2012 10:59:07 +1000
commit e73f8959af0439d114847eab5a8a5ce48f1217c4 upstream.
Provide a simple mechanism that allows running code in the (nonatomic)
context of the arbitrary task.
The caller does task_work_add(task, task_work) and this task executes
task_work->func() either from do_notify_resume() or from do_exit(). The
callback can rely on PF_EXITING to detect the latter case.
"struct task_work" can be embedded in another struct, still it has "void
*data" to handle the most common/simple case.
This allows us to kill the ->replacement_session_keyring hack, and
potentially this can have more users.
Performance-wise, this adds 2 "unlikely(!hlist_empty())" checks into
tracehook_notify_resume() and do_exit(). But at the same time we can
remove the "replacement_session_keyring != NULL" checks from
arch/*/signal.c and exit_creds().
Note: task_work_add/task_work_run abuses ->pi_lock. This is only because
this lock is already used by lookup_pi_state() to synchronize with
do_exit() setting PF_EXITING. Fortunately the scope of this lock in
task_work.c is really tiny, and the code is unlikely anyway.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alexander Gordeev <agordeev@redhat.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Smith <dsmith@redhat.com>
Cc: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
3/6 [
Author: Oleg Nesterov
Email: oleg@redhat.com
Subject: genirq: reimplement exit_irq_thread() hook via task_work_add()
Date: Fri, 11 May 2012 10:59:08 +1000
commit 4d1d61a6b203d957777d73fcebf19d90b038b5b2 upstream.
exit_irq_thread() and task->irq_thread are needed to handle the unexpected
(and unlikely) exit of irq-thread.
We can use task_work instead and make this all private to
kernel/irq/manage.c, cleanup plus micro-optimization.
1. rename exit_irq_thread() to irq_thread_dtor(), make it
static, and move it up before irq_thread().
2. change irq_thread() to do task_work_add(irq_thread_dtor)
at the start and task_work_cancel() before return.
tracehook_notify_resume() can never play with kthreads,
only do_exit()->exit_task_work() can call the callback
and this is what we want.
3. remove task_struct->irq_thread and the special hook
in do_exit().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alexander Gordeev <agordeev@redhat.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Smith <dsmith@redhat.com>
Cc: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
4/6 [
Author: Oleg Nesterov
Email: oleg@redhat.com
Subject: keys: change keyctl_session_to_parent() to use task_work_add()
Date: Fri, 11 May 2012 10:59:08 +1000
commit 413cd3d9abeaef590e5ce00564f7a443165db238 upstream.
Change keyctl_session_to_parent() to use task_work_add() and move
key_replace_session_keyring() logic into task_work->func().
Note that we do task_work_cancel() before task_work_add() to ensure that
only one work can be pending at any time. This is important, we must not
allow user-space to abuse the parent's ->task_works list.
The callback, replace_session_keyring(), checks PF_EXITING. I guess this
is not really needed but looks better.
As a side effect, this fixes the (unlikely) race. The callers of
key_replace_session_keyring() and keyctl_session_to_parent() lack the
necessary barriers, the parent can miss the request.
Now we can remove task_struct->replacement_session_keyring and related
code.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alexander Gordeev <agordeev@redhat.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Smith <dsmith@redhat.com>
Cc: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
5/6 [
Author: Oleg Nesterov
Email: oleg@redhat.com
Subject: keys: kill the dummy key_replace_session_keyring()
Date: Fri, 11 May 2012 10:59:09 +1000
commit dea649b8ac1861107c5d91e1a71121434fc64193 upstream.
After the previouse change key_replace_session_keyring() becomes a nop.
Remove the dummy definition in key.h and update the callers in
arch/*/kernel/signal.c.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alexander Gordeev <agordeev@redhat.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Smith <dsmith@redhat.com>
Cc: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
6/6 [
Author: Oleg Nesterov
Email: oleg@redhat.com
Subject: keys: kill task_struct->replacement_session_keyring
Date: Fri, 11 May 2012 10:59:09 +1000
commit f23ca335462e3c84f13270b9e65f83936068ec2c upstream.
Kill the no longer used task_struct->replacement_session_keyring, update
copy_creds() and exit_creds().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alexander Gordeev <agordeev@redhat.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Smith <dsmith@redhat.com>
Cc: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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1/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes, mm, x86: Add the ability to install and remove uprobes breakpoints
Date: Thu, 9 Feb 2012 14:56:42 +0530
Add uprobes support to the core kernel, with x86 support.
This commit adds the kernel facilities, the actual uprobes
user-space ABI and perf probe support comes in later commits.
General design:
Uprobes are maintained in an rb-tree indexed by inode and offset
(the offset here is from the start of the mapping). For a unique
(inode, offset) tuple, there can be at most one uprobe in the
rb-tree.
Since the (inode, offset) tuple identifies a unique uprobe, more
than one user may be interested in the same uprobe. This provides
the ability to connect multiple 'consumers' to the same uprobe.
Each consumer defines a handler and a filter (optional). The
'handler' is run every time the uprobe is hit, if it matches the
'filter' criteria.
The first consumer of a uprobe causes the breakpoint to be
inserted at the specified address and subsequent consumers are
appended to this list. On subsequent probes, the consumer gets
appended to the existing list of consumers. The breakpoint is
removed when the last consumer unregisters. For all other
unregisterations, the consumer is removed from the list of
consumers.
Given a inode, we get a list of the mms that have mapped the
inode. Do the actual registration if mm maps the page where a
probe needs to be inserted/removed.
We use a temporary list to walk through the vmas that map the
inode.
- The number of maps that map the inode, is not known before we
walk the rmap and keeps changing.
- extending vm_area_struct wasn't recommended, it's a
size-critical data structure.
- There can be more than one maps of the inode in the same mm.
We add callbacks to the mmap methods to keep an eye on text vmas
that are of interest to uprobes. When a vma of interest is mapped,
we insert the breakpoint at the right address.
Uprobe works by replacing the instruction at the address defined
by (inode, offset) with the arch specific breakpoint
instruction. We save a copy of the original instruction at the
uprobed address.
This is needed for:
a. executing the instruction out-of-line (xol).
b. instruction analysis for any subsequent fixups.
c. restoring the instruction back when the uprobe is unregistered.
We insert or delete a breakpoint instruction, and this
breakpoint instruction is assumed to be the smallest instruction
available on the platform. For fixed size instruction platforms
this is trivially true, for variable size instruction platforms
the breakpoint instruction is typically the smallest (often a
single byte).
Writing the instruction is done by COWing the page and changing
the instruction during the copy, this even though most platforms
allow atomic writes of the breakpoint instruction. This also
mirrors the behaviour of a ptrace() memory write to a PRIVATE
file map.
The core worker is derived from KSM's replace_page() logic.
In essence, similar to KSM:
a. allocate a new page and copy over contents of the page that
has the uprobed vaddr
b. modify the copy and insert the breakpoint at the required
address
c. switch the original page with the copy containing the
breakpoint
d. flush page tables.
replace_page() is being replicated here because of some minor
changes in the type of pages and also because Hugh Dickins had
plans to improve replace_page() for KSM specific work.
Instruction analysis on x86 is based on instruction decoder and
determines if an instruction can be probed and determines the
necessary fixups after singlestep. Instruction analysis is done
at probe insertion time so that we avoid having to repeat the
same analysis every time a probe is hit.
A lot of code here is due to the improvement/suggestions/inputs
from Peter Zijlstra.
Changelog:
(v10):
- Add code to clear REX.B prefix as suggested by Denys Vlasenko
and Masami Hiramatsu.
(v9):
- Use insn_offset_modrm as suggested by Masami Hiramatsu.
(v7):
Handle comments from Peter Zijlstra:
- Dont take reference to inode. (expect inode to uprobe_register to be sane).
- Use PTR_ERR to set the return value.
- No need to take reference to inode.
- use PTR_ERR to return error value.
- register and uprobe_unregister share code.
(v5):
- Modified del_consumer as per comments from Peter.
- Drop reference to inode before dropping reference to uprobe.
- Use i_size_read(inode) instead of inode->i_size.
- Ensure uprobe->consumers is NULL, before __uprobe_unregister() is called.
- Includes errno.h as recommended by Stephen Rothwell to fix a build issue
on sparc defconfig
- Remove restrictions while unregistering.
- Earlier code leaked inode references under some conditions while
registering/unregistering.
- Continue the vma-rmap walk even if the intermediate vma doesnt
meet the requirements.
- Validate the vma found by find_vma before inserting/removing the
breakpoint
- Call del_consumer under mutex_lock.
- Use hash locks.
- Handle mremap.
- Introduce find_least_offset_node() instead of close match logic in
find_uprobe
- Uprobes no more depends on MM_OWNER; No reference to task_structs
while inserting/removing a probe.
- Uses read_mapping_page instead of grab_cache_page so that the pages
have valid content.
- pass NULL to get_user_pages for the task parameter.
- call SetPageUptodate on the new page allocated in write_opcode.
- fix leaking a reference to the new page under certain conditions.
- Include Instruction Decoder if Uprobes gets defined.
- Remove const attributes for instruction prefix arrays.
- Uses mm_context to know if the application is 32 bit.
commit 2b144498350860b6ee9dc57ff27a93ad488de5dc upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Also-written-by: Jim Keniston <jkenisto@us.ibm.com>
Reviewed-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Roland McGrath <roland@hack.frob.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Anton Arapov <anton@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linux-mm <linux-mm@kvack.org>
Link: http://lkml.kernel.org/r/20120209092642.GE16600@linux.vnet.ibm.com
[ Made various small edits to the commit log ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
2/24 [
Author: Ingo Molnar
Email: mingo@elte.hu
Subject: uprobes/core: Clean up, refactor and improve the code
Date: Fri, 17 Feb 2012 09:27:41 +0100
Make the uprobes code readable to me:
- improve the Kconfig text so that a mere mortal gets some idea
what CONFIG_UPROBES=y is really about
- do trivial renames to standardize around the uprobes_*() namespace
- clean up and simplify various code flow details
- separate basic blocks of functionality
- line break artifact and white space related removal
- use standard local varible definition blocks
- use vertical spacing to make things more readable
- remove unnecessary volatile
- restructure comment blocks to make them more uniform and
more readable in general
commit 7b2d81d48a2d8e37efb6ce7b4d5ef58822b30d89 upstream
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Anton Arapov <anton@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Link: http://lkml.kernel.org/n/tip-ewbwhb8o6navvllsauu7k07p@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
3/24 [
Author: Ingo Molnar
Email: mingo@elte.hu
Subject: uprobes: Move to kernel/events/
Date: Wed, 22 Feb 2012 11:01:49 +0100
Consolidate the uprobes code under kernel/events/, where the various
core kernel event handling routines live.
commit a5f4374a9610fd7286c2164d4e680436727eff71 upstream
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Anton Arapov <anton@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Link: http://lkml.kernel.org/n/tip-biuyhhwohxgbp2vzbap5yr8o@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
4/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Make instruction tables volatile
Date: Wed, 22 Feb 2012 14:45:35 +0530
Some versions of gcc spits a warning about the asm operand for
test_bit and also causes the first long of the instruction table
to be output.
Fix is similar to 7115e3fc on arch/x86/kernel/kprobes.c
commit 04a3d984d32e47983770d314cdb4e4d8f38fccb7 upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Anton Arapov <anton@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Josh Stone <jistone@redhat.com>
Link: http://lkml.kernel.org/r/20120222091535.15880.12502.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
5/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Remove uprobe_opcode_sz
Date: Wed, 22 Feb 2012 14:45:49 +0530
uprobe_opcode_sz refers to the smallest instruction size for
that architecture. UPROBES_BKPT_INSN_SIZE refers to the size of
the breakpoint instruction for that architecture.
For now we are assuming that both uprobe_opcode_sz and
UPROBES_BKPT_INSN_SIZE are the same for all archs and hence
removing uprobe_opcode_sz in favour of UPROBES_BKPT_INSN_SIZE.
However if we have to support architectures where the smallest
instruction size is different from the size of breakpoint
instruction, we may have to re-introduce uprobe_opcode_sz.
commit 96379f60075c75b261328aa7830ef8aa158247ac upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Anton Arapov <anton@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Josh Stone <jistone@redhat.com>
Link: http://lkml.kernel.org/r/20120222091549.15880.67020.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
6/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Move insn to arch specific structure
Date: Wed, 22 Feb 2012 14:46:02 +0530
Few cleanups suggested by Ingo Molnar.
- Rename struct uprobe_arch_info to struct arch_uprobe.
- Move insn from struct uprobe to struct arch_uprobe.
- Make arch specific uprobe functions to accept struct arch_uprobe
instead of struct uprobe.
- Move struct uprobe to kernel/uprobes.c from include/linux/uprobes.h
commit 3ff54efdfaace9e9b2b7c1959a865be6b91de96c upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Anton Arapov <anton@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Josh Stone <jistone@redhat.com>
Link: http://lkml.kernel.org/r/20120222091602.15880.40249.sendpatchset@srdronam.in.ibm.com
[ Made various small improvements ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
7/24 [
Author: Ingo Molnar
Email: mingo@elte.hu
Subject: uprobes: Update copyright notices
Date: Wed, 22 Feb 2012 11:37:29 +0100
Add Peter Zijlstra's copyright to the uprobes code, whose
contributions to the uprobes code are not visible in the Git
history, because they were backmerged.
Also update existing copyright notices to the year 2012.
commit 35aa621b5ab9d08767f7bc8d209b696df281d715 upstream
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/n/tip-vjqxst502pc1efz7ah8cyht4@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
8/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Make macro names consistent
Date: Mon, 12 Mar 2012 14:55:14 +0530
Rename macros that refer to individual uprobe to start with
UPROBE_ instead of UPROBES_.
This is pure cleanup, no functional change intended.
commit 900771a483ef28915a48066d7895d8252315607a upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120312092514.5379.36595.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
9/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Make order of function parameters consistent across functions
Date: Mon, 12 Mar 2012 14:55:30 +0530
If a function takes struct uprobe or struct arch_uprobe, then it
is passed as the first parameter.
This is pure cleanup, no functional change intended.
commit e3343e6a2819ff5d0dfc4bb5c9fb7f9a4d04da73 upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120312092530.5379.18394.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
10/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Rename bkpt to swbp
Date: Mon, 12 Mar 2012 14:55:45 +0530
bkpt doesnt seem to be a correct abbrevation for breakpoint.
Choice was between bp and breakpoint. Since bp can refer to
things other than breakpoint, use swbp to refer to breakpoints.
This is pure cleanup, no functional change intended.
commit 5cb4ac3a583d4ee18c8682ab857e093c4a0d0895 upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120312092545.5379.91251.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
11/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Handle breakpoint and singlestep exceptions
Date: Tue, 13 Mar 2012 23:30:11 +0530
Uprobes uses exception notifiers to get to know if a thread hit
a breakpoint or a singlestep exception.
When a thread hits a uprobe or is singlestepping post a uprobe
hit, the uprobe exception notifier sets its TIF_UPROBE bit,
which will then be checked on its return to userspace path
(do_notify_resume() ->uprobe_notify_resume()), where the
consumers handlers are run (in task context) based on the
defined filters.
Uprobe hits are thread specific and hence we need to maintain
information about if a task hit a uprobe, what uprobe was hit,
the slot where the original instruction was copied for xol so
that it can be singlestepped with appropriate fixups.
In some cases, special care is needed for instructions that are
executed out of line (xol). These are architecture specific
artefacts, such as handling RIP relative instructions on x86_64.
Since the instruction at which the uprobe was inserted is
executed out of line, architecture specific fixups are added so
that the thread continues normal execution in the presence of a
uprobe.
Postpone the signals until we execute the probed insn.
post_xol() path does a recalc_sigpending() before return to
user-mode, this ensures the signal can't be lost.
Uprobes relies on DIE_DEBUG notification to notify if a
singlestep is complete.
Adds x86 specific uprobe exception notifiers and appropriate
hooks needed to determine a uprobe hit and subsequent post
processing.
Add requisite x86 fixups for xol for uprobes. Specific cases
needing fixups include relative jumps (x86_64), calls, etc.
Where possible, we check and skip singlestepping the
breakpointed instructions. For now we skip single byte as well
as few multibyte nop instructions. However this can be extended
to other instructions too.
Credits to Oleg Nesterov for suggestions/patches related to
signal, breakpoint, singlestep handling code.
commit 0326f5a94ddea33fa331b2519f4172f4fb387baa upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120313180011.29771.89027.sendpatchset@srdronam.in.ibm.com
[ Performed various cleanliness edits ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
12/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Allocate XOL slots for uprobes use
Date: Fri, 30 Mar 2012 23:56:31 +0530
Uprobes executes the original instruction at a probed location
out of line. For this, we allocate a page (per mm) upon the
first uprobe hit, in the process user address space, divide it
into slots that are used to store the actual instructions to be
singlestepped. These slots are known as xol (execution out of
line) slots.
Care is taken to ensure that the allocation is in an unmapped
area as close to the top of the user address space as possible,
with appropriate permission settings to keep selinux like
frameworks happy.
Upon a uprobe hit, a free slot is acquired, and is released
after the singlestep completes.
Lots of improvements courtesy suggestions/inputs from Peter and
Oleg.
[ Folded a fix for build issue on powerpc fixed and reported by
Stephen Rothwell. ]
commit d4b3b6384f98f8692ad0209891ccdbc7e78bbefe upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Anton Arapov <anton@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120330182631.10018.48175.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
13/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Optimize probe hits with the help of a counter
Date: Fri, 30 Mar 2012 23:56:46 +0530
Maintain a per-mm counter: number of uprobes that are inserted
on this process address space.
This counter can be used at probe hit time to determine if we
need a lookup in the uprobes rbtree. Everytime a probe gets
inserted successfully, the probe count is incremented and
everytime a probe gets removed, the probe count is decremented.
The new uprobe_munmap hook ensures the count is correct on a
unmap or remap of a region. We expect that once a
uprobe_munmap() is called, the vma goes away. So
uprobe_unregister() finding a probe to unregister would either
mean unmap event hasnt occurred yet or a mmap event on the same
executable file occured after a unmap event.
Additionally, uprobe_mmap hook now also gets called:
a. on every executable vma that is COWed at fork.
b. a vma of interest is newly mapped; breakpoint insertion also
happens at the required address.
On process creation, make sure the probes count in the child is
set correctly.
Special cases that are taken care include:
a. mremap
b. VM_DONTCOPY vmas on fork()
c. insertion/removal races in the parent during fork().
commit 682968e0c425c60f0dde37977e5beb2b12ddc4cc upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Anton Arapov <anton@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120330182646.10018.85805.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
14/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Make background page replacement logic account for rss_stat counters
Date: Wed, 11 Apr 2012 16:05:16 +0530
Background page replacement logic adds a new anonymous page
instead of a file backed (while inserting a breakpoint) /
anonymous page (while removing a breakpoint).
Hence the uprobes logic should take care to update the
task->ss_stat counters accordingly.
This bug became apparent courtesy of commit c3f0327f8e9d
("mm: add rss counters consistency check").
commit 7396fa818d6278694a44840f389ddc40a3269a9a upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Anton Arapov <anton@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120411103516.23245.2700.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
15/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: uprobes/core: Decrement uprobe count before the pages are unmapped
Date: Wed, 11 Apr 2012 16:05:27 +0530
Uprobes has a callback (uprobe_munmap()) in the unmap path to
maintain the uprobes count.
In the exit path this callback gets called in unlink_file_vma().
However by the time unlink_file_vma() is called, the pages would
have been unmapped (in unmap_vmas()) and the task->rss_stat counts
accounted (in zap_pte_range()).
If the exiting process has probepoints, uprobe_munmap() checks if
the breakpoint instruction was around before decrementing the probe
count.
This results in a file backed page being reread by uprobe_munmap()
and hence it does not find the breakpoint.
This patch fixes this problem by moving the callback to
unmap_single_vma(). Since unmap_single_vma() may not unmap the
complete vma, add start and end parameters to uprobe_munmap().
This bug became apparent courtesy of commit c3f0327f8e9d
("mm: add rss counters consistency check").
commit cbc91f71b51b8335f1fc7ccfca8011f31a717367 upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Anton Arapov <anton@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120411103527.23245.9835.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
16/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: tracing: Modify is_delete, is_return from int to bool
Date: Mon, 9 Apr 2012 14:41:33 +0530
is_delete and is_return can take utmost 2 values and are better
of being a boolean than a int. There are no functional changes.
commit 3a6b76661da8e92124a813b43607f5bec1a618de upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Anton Arapov <anton@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120409091133.8343.65289.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
17/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: tracing: Extract out common code for kprobes/uprobes trace events
Date: Mon, 9 Apr 2012 14:41:44 +0530
Move parts of trace_kprobe.c that can be shared with upcoming
trace_uprobe.c. Common code to kernel/trace/trace_probe.h and
kernel/trace/trace_probe.c. There are no functional changes.
commit 8ab83f56475ec9151645a888dfe1941f4a92091d upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Anton Arapov <anton@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120409091144.8343.76218.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
18/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: tracing: Provide trace events interface for uprobes
Date: Wed, 11 Apr 2012 16:00:43 +0530
Implements trace_event support for uprobes. In its current form
it can be used to put probes at a specified offset in a file and
dump the required registers when the code flow reaches the
probed address.
The following example shows how to dump the instruction pointer
and %ax a register at the probed text address. Here we are
trying to probe zfree in /bin/zsh:
# cd /sys/kernel/debug/tracing/
# cat /proc/`pgrep zsh`/maps | grep /bin/zsh | grep r-xp
00400000-0048a000 r-xp 00000000 08:03 130904 /bin/zsh
# objdump -T /bin/zsh | grep -w zfree
0000000000446420 g DF .text 0000000000000012 Base
zfree # echo 'p /bin/zsh:0x46420 %ip %ax' > uprobe_events
# cat uprobe_events
p:uprobes/p_zsh_0x46420 /bin/zsh:0x0000000000046420
# echo 1 > events/uprobes/enable
# sleep 20
# echo 0 > events/uprobes/enable
# cat trace
# tracer: nop
#
# TASK-PID CPU# TIMESTAMP FUNCTION
# | | | | |
zsh-24842 [006] 258544.995456: p_zsh_0x46420: (0x446420) arg1=446421 arg2=79
zsh-24842 [007] 258545.000270: p_zsh_0x46420: (0x446420) arg1=446421 arg2=79
zsh-24842 [002] 258545.043929: p_zsh_0x46420: (0x446420) arg1=446421 arg2=79
zsh-24842 [004] 258547.046129: p_zsh_0x46420: (0x446420) arg1=446421 arg2=79
commit f3f096cfedf8113380c56fc855275cc75cd8cf55 upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Anton Arapov <anton@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120411103043.GB29437@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
19/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: tracing: Fix kconfig warning due to a typo
Date: Tue, 8 May 2012 16:41:26 +0530
Commit f3f096cfe ("tracing: Provide trace events interface for
uprobes") throws a warning about unmet dependencies.
The exact warning message is:
warning: (UPROBE_EVENT) selects UPROBES which has unmet direct dependencies (UPROBE_EVENTS && PERF_EVENTS)
This is due to a typo in arch/Kconfig file. Fix similar typos in
the uprobetracer documentation.
Also add sample format of a uprobe event in the uprobetracer
documentation as suggested by Masami Hiramatsu.
commit ec83db0f78cd44c3b586ec1c3a348d1a8a389797 upstream
Reported-by: Stephen Boyd <sboyd@codeaurora.org>
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Anton Arapov <anton@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120508111126.21004.38285.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
20/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: perf probe: Provide perf interface for uprobes
Date: Mon, 16 Apr 2012 17:39:09 +0530
- Enhances perf to probe user space executables and libraries.
- Enhances -F/--funcs option of "perf probe" to list possible probe points in
an executable file or library.
- Documents userspace probing support in perf.
[ Probing a function in the executable using function name ]
perf probe -x /bin/zsh zfree
[ Probing a library function using function name ]
perf probe -x /lib64/libc.so.6 malloc
[ list probe-able functions in an executable ]
perf probe -F -x /bin/zsh
[ list probe-able functions in an library]
perf probe -F -x /lib/libc.so.6
commit 225466f1c2d816c33b4341008f45dfdc83a9f0cb upstream
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Anton Arapov <anton@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20120416120909.30661.99781.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
21/24 [
Author: Srikar Dronamraju
Email: srikar@linux.vnet.ibm.com
Subject: perf probe: Detect probe target when m/x options are absent
Date: Mon, 16 Apr 2012 17:39:25 +0530
Options -m and -x explicitly allow tracing of modules / user space
binaries. In absense of these options, check if the first argument can
be used as a target.
perf probe /bin/zsh zfree is equivalent to perf probe -x /bin/zsh zfree.
commit 73eff9f56e15598c8399c0b86899fd889b97f085 upstream
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Anton Arapov <anton@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20120416120925.30661.40409.sendpatchset@srdronam.in.ibm.com
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
22/24 [
Author: Ananth N Mavinakayanahalli
Email: ananth@in.ibm.com
Subject: On RISC architectures like powerpc, instructions are fixed size. Instruction analysis on such platforms is just a matter of (insn % 4). Pass the vaddr at which the uprobe is to be inserted so that arch_uprobe_analyze_insn() can flag misaligned registration requests.
Date: Wed, 13 Jun 2012 10:43:40 -0400
Changes in V2:
Pass (unsigned long)addr instead of (loff_t)vaddr to
arch_uprobe_analyze_insn(). We need the loff_t vaddr to take care of
the offset of inode:offset pair for large file sizes on 32bit.
Link: https://lkml.org/lkml/2012/6/6/139
Signed-off-by: Ananth N Mavinakaynahalli <ananth@in.ibm.com>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
23/24 [
Author: Ananth N Mavinakayanahalli
Email: ananth@in.ibm.com
Subject: This is the port of uprobes to powerpc. Usage is similar to x86.
Date: Wed, 13 Jun 2012 11:32:33 -0400
One TODO in this port compared to x86 is the uprobe abort_xol() logic.
x86 depends on the thread_struct.trap_nr (absent in powerpc) to determine
if a signal was caused when the uprobed instruction was single-stepped/
emulated, in which case, we reset the instruction pointer to the probed
address and retry the probe again.
Tested on POWER6; I don't see anything here that should stop it from
working on a ppc32; since I don't have access to a ppc32 machine, it
would be good if somoene could verify that part.
[root@xxxx ~]# ./bin/perf probe -x /lib64/libc.so.6 malloc
Added new event:
probe_libc:malloc (on 0xb4860)
You can now use it in all perf tools, such as:
perf record -e probe_libc:malloc -aR sleep 1
[root@xxxx ~]# ./bin/perf record -e probe_libc:malloc -aR sleep 20
[ perf record: Woken up 22 times to write data ]
[ perf record: Captured and wrote 5.843 MB perf.data (~255302 samples) ]
[root@xxxx ~]# ./bin/perf report --stdio
# ========
# captured on: Mon Jun 4 05:26:31 2012
# hostname : xxxx.ibm.com
# os release : 3.4.0-uprobe
# perf version : 3.4.0
# arch : ppc64
# nrcpus online : 4
# nrcpus avail : 4
# cpudesc : POWER6 (raw), altivec supported
# cpuid : 62,769
# total memory : 7310528 kB
# cmdline : /root/bin/perf record -e probe_libc:malloc -aR sleep 20
# event : name = probe_libc:malloc, type = 2, config = 0x124, config1 = 0x0, con
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
# Samples: 83K of event 'probe_libc:malloc'
# Event count (approx.): 83484
#
# Overhead Command Shared Object Symbol
# ........ ............ ............. ..........
#
69.05% tar libc-2.12.so [.] malloc
28.57% rm libc-2.12.so [.] malloc
1.32% avahi-daemon libc-2.12.so [.] malloc
0.58% bash libc-2.12.so [.] malloc
0.28% sshd libc-2.12.so [.] malloc
0.08% irqbalance libc-2.12.so [.] malloc
0.05% bzip2 libc-2.12.so [.] malloc
0.04% sleep libc-2.12.so [.] malloc
0.03% multipathd libc-2.12.so [.] malloc
0.01% sendmail libc-2.12.so [.] malloc
0.01% automount libc-2.12.so [.] malloc
V2:
a. arch_uprobe_analyze_insn() now gets unsigned long addr.
b. Verified that mtmsr[d] and rfi[d] are handled correctly by
emulate_step() (no changes to this patch).
Link: https://lkml.org/lkml/2012/6/6/181
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
24/24 [
Author: Paul Barrette
Email: paul.barrette@windriver.com
Subject: powerpc: uprobes: removed external declaration of uprobe_get_swbp_addr.
Date: Tue, 12 Jun 2012 14:24:12 -0400
uprobe_get_swbp_addr is declared as static inline in linux/uprobes.h.
Redeclaring it differently breaks compilation.
Signed-off-by: Paul Barrette <paul.barrette@windriver.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
|
|
Signed-off-by: Michel Thebeau <michel.thebeau@windriver.com>
|
|
Hash is the correct comment format.
Signed-off-by: Michel Thebeau <michel.thebeau@windriver.com>
|
|
Warnings are not clear because base.scc exists both in ktypes/base/ and
features/usb/. Rename features/usb/base.scc and features/usb/base.cfg
Signed-off-by: Michel Thebeau <michel.thebeau@windriver.com>
|
|
This has largely no effect, since the default is y, and since
it is as fundamental as CONFIG_NET, it should be in the base.
Move it there and delete any other instances of it. This will
resolve any BSP configuration audit warnings on CONFIG_BLOCK
caused by a BSP that includes scsi.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
|
|
A scan of this file reveals that it is full of UART specific
settings for various embedded platforms, and should be listed
in the hardware category. This will also stop the audit from
warning that SERIAL_CORE and SERIAL_CORE_CONSOLE are being
set by BSPs as if it were non-hardware related.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
|
|
Call out the two filesystems used by this specific BSP in
the hardware list. While filesystems aren't generally
hardware items, boards with MTD devices will need certain
specific filesystems, so there is a hardware linkage.
Regardless, the point of the audit is to inform people in
a way that lets them think about their choices. We've
done that here, and know we need these.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
|
|
This BSP patches into existence a new Kconfig file in
the drivers/net/ethernet dir, and it creates a new
Kconfig option (PACKET_MANGLE) in what would otherwise
be a non board (hardware) specific Kconfig file.
Inform the audit subsystem about both, so that it does
not create false positive warnings about either.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
|
|
This file describes a CPU variant, so it is hardware, and
since it is in the mainline kernel, it should be listed
here and not in the BSP specific dir (where BSP added
Kconfig files would be listed).
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
|
|
Unlike the previous config, this is a more minimalistic one
that sticks to just specifying hardware items.
The watchdog minifrag gets an update too, as a config option
got renamed.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
|
|
Import of the openwrt files from trunk, as of this commit:
----------
commit c1d79f64eed0a7ac36b5b9bca52275b397bec424
Author: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Mon Jul 16 16:26:51 2012 +0000
uboot-ar71xx: fix compile on recent mac os x versions
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32750 3c298f89-4303-0410-b956-a3cf2f4a3e73
----------
Due to the nature of how the openwrt source is managed, new
files are found separate from the commits which actually
make use of them, so that unused stuff could not easily
be left behind, but it is what it is.
Path to files in the repo is:
target/linux/generic/files
target/linux/ar71xx/files
Repo is: git://nbd.name/openwrt.git
The process used was creating a booting kernel based on a
v3.3 baseline and a subset of the openwrt patches (there
are over 200), with the obvious (aka "easy") cull made.
This subset was then forward ported to v3.4 -- it is by
no means the absolute minimum it could be; things like
ar93xx/95xx support could also be culled, or some of the
board specific init files, but given this board is already
EOL, I can't justify spending additional time doing that.
Some of the patches (ones with Patchworks links and SOB via
Ralf) made it upstream in v3.5-rc1, and I've added the
upstream IDs to those where appropriate. However they were
not compared one-by-one to verify what (if any) deltas were
introduced in the backport to openwrt's 3.3 kernel.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
|
|
Since this was largely a full .config file, just zero it out
before reducing it to the key needed config items, since a
diff of the two will be a meaningless spray of +- lines.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
|
|
So that we don't get audit warnings telling us that UART
related settings are non-hardware related.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
|
|
These patches were based on an earlier 2.6.x kernel version,
and Openwrt houses a newer version based on v3.3 -- so push
these off a cliff and we'll use the v3.3 ones as a basis for
creating a v3.4 based branch
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
|
|
Ensure the preempt-rt kernel has usb-mass-storage and boot-live support
in support of booting the hddimg images over USB.
Add the latencytop and profiling scc files to keep the default policy
consistent with the 'standard' kernel.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
|
|
Ensure the preempt-rt kernel has usb-mass-storage and boot-live support
in support of booting the hddimg images over USB.
Add the latencytop and profiling scc files to keep the default policy
consistent with the 'standard' kernel.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
CC: Tom Zanussi <tom.zanussi@intel.com>
|
|
Ensure the preempt-rt kernel has usb-mass-storage and boot-live support
in support of booting the hddimg images over USB.
Add the latencytop and profiling scc files to keep the default policy
consistent with the 'standard' kernel.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
CC: Tom Zanussi <tom.zanussi@intel.com>
|
|
Ensure the preempt-rt kernel has usb-mass-storage and boot-live support
in support of booting the hddimg images over USB.
Add the latencytop and profiling scc files to keep the default policy
consistent with the 'standard' kernel.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
CC: Tom Zanussi <tom.zanussi@intel.com>
|
|
Ensure the preempt-rt kernel has usb-mass-storage and boot-live support
in support of booting the hddimg images over USB.
Add the latencytop and profiling scc files to keep the default policy
consistent with the 'standard' kernel.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
CC: Tom Zanussi <tom.zanussi@intel.com>
CC: Kishore Bodke <kishore.k.bodke@intel.com>
|
|
Ensure the preempt-rt kernel has usb-mass-storage and boot-live support
in support of booting the hddimg images over USB.
Add the latencytop and profiling scc files to keep the default policy
consistent with the 'standard' kernel.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
CC: Tom Zanussi <tom.zanussi@intel.com>
CC: Kishore Bodke <kishore.k.bodke@intel.com>
|
|
Ensure the preempt-rt kernel has usb-mass-storage and boot-live support
in support of booting the hddimg images over USB.
Add the latencytop and profiling scc files to keep the default policy
consistent with the 'standard' kernel.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
|
|
From the README:
Staging directory. Features found in this directory should not
be included directly by other features, but instead should be
found, and executed once during tree construction.
The result of features found in this tree are branches that
contain staged commits for use by other features during tree
construction.
Having staged commits allows topic branches to contain isolated
work, which is merged to BSPs, thus sharing the commit IDs and
keeping the work independent.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
|
|
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
|
|
1/2 [
Author: Nitin A Kamble
Email: nitin.a.kamble@intel.com
Subject: yocto/emgd: emgd 1.14 driver
Date: Mon, 16 Jul 2012 07:14:38 -0700
The starting-point code that subsequent patches will modify. This is
a straight copy of the code in the emgd 1.14 emgd driver, specifically
IEMGD_HEAD_Linux/common/drm/emgd_drm.tgz from
LIN_IEMGD_1_14_GOLD_2443.tgz, the 'Linux Tar Ball' release downloaded
from http://edc.intel.com/Software/Downloads/EMGD/.
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
]
2/2 [
Author: Nitin A Kamble
Email: nitin.a.kamble@intel.com
Subject: emgd/pvr: get it building with v3.4 kernel
Date: Mon, 16 Jul 2012 07:14:50 -0700
Add emgd config option (DRM_EGD) and modify Makefiles for in-tree
builds.
rebased to v3.4 code
Fix build errors caused by changes to kernel interfaces introduced by
linux 3.2 such as:
error: 'THIS_MODULE' undeclared here (not in a function)
due to a missing THIS_MODULE definition which can be found in linux/export.h.
It also fixes a ream of errors like:
error: expected ')' before string constant
due to missing MODULE_PARM_DESC definition which can be found in
linux/moduleparam.h, included by linux/module.h, needed also for
MODULE_AUTHOR, etc.
variable name "pitch" from drm_framebuffer structure has changed
to "pitches" array in v3.4 kernel soruces.
avoid errors like these:
emgd_fbcon.c:128:28: error: 'struct drm_framebuffer' has no member named 'pitch'
Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
|
|
1/1 [
Author: Tom Zanussi
Email: tom.zanussi@intel.com
Subject: perf: add sgidefs.h to for mips builds
Date: Tue, 10 Jul 2012 09:37:56 -0500
Allow Python.h to find the definitions it needs on mips i.e. get rid
of the error: "_ABIN32" is not defined.
Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
|
|
1/2 [
Author: Mark Asselstine
Email: mark.asselstine@windriver.com
Subject: yaffs: change type for mode to umode_t
Date: Wed, 4 Jul 2012 16:43:32 -0400
mainline commit 4acdaf27ebe2 [switch ->create() to umode_t] changed the
type for mode to umode_t, mirror this change for yaffs.
Signed-off-by: Mark Asselstine <mark.asselstine@windriver.com>
]
2/2 [
Author: Mark Asselstine
Email: mark.asselstine@windriver.com
Subject: yaffs: add leading underscore to mtd_info function names
Date: Thu, 5 Jul 2012 13:31:08 -0400
Because of mainline commit 3c3c10bba1e4 [mtd: add leading underscore
to all mtd functions] we need to follow the lead and add some leading
underscores to resolve build errors.
Signed-off-by: Mark Asselstine <mark.asselstine@windriver.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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1/1 [
Author: Erez Zadok
Email: ezk@cs.sunysb.edu
Subject: Unionfs: use mode_t
Date: Fri, 10 Feb 2012 15:36:36 -0500
commit dba53016f577 from unionfs upstream
git://git.fsl.cs.sunysb.edu/unionfs-latest.git
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Mark Asselstine <mark.asselstine@windriver.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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1/1 [
Author: Erez Zadok
Email: ezk@cs.sunysb.edu
Subject: Unionfs: update ->show_options prototype
Date: Fri, 10 Feb 2012 15:36:44 -0500
commit a34b0868fc27524af46ec861de4d85ae07b63ccb from unionfs
upstream - git://git.fsl.cs.sunysb.edu/unionfs-latest.git
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Liang Li <liang.li@windriver.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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1/3 [
Author: Tom Zanussi
Email: tom.zanussi@intel.com
Subject: perf: use pkg-config instead of python-config
Date: Tue, 3 Jul 2012 13:07:21 -0500
Python has build flags available via pkg-config, use those at
build-time instead.
Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
]
2/3 [
Author: Tom Zanussi
Email: tom.zanussi@intel.com
Subject: perf: add 'libperl not found' warning
Date: Tue, 3 Jul 2012 13:07:22 -0500
If libperl isn't found, display a message to that effect along with
some hints on how to fix it.
Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
]
3/3 [
Author: Tom Zanussi
Email: tom.zanussi@intel.com
Subject: perf: change --root to --prefix for python install
Date: Tue, 3 Jul 2012 13:07:23 -0500
Otherwise we get the sysroot path appended to the build path, not what
we want.
Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
]
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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Add support for generic syscall entry/exit tracing.
Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
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Enable virtio-console by default when virtio is requested by a BSP.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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We've enabled (=m) INGRESS, but we should also explicitly
select ACT, since we have this in Kconfig:
config NET_SCH_INGRESS
tristate "Ingress Qdisc"
depends on NET_CLS_ACT
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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Removed in mainline commit a77aea92010acf54ad785047234418d5d68772e2
-----------
cgroup: remove the ns_cgroup
The ns_cgroup is an annoying cgroup at the namespace / cgroup frontier and
leads to some problems:
* cgroup creation is out-of-control
* cgroup name can conflict when pids are looping
* it is not possible to have a single process handling a lot of
namespaces without falling in a exponential creation time
* we may want to create a namespace without creating a cgroup
The ns_cgroup was replaced by a compatibility flag 'clone_children',
where a newly created cgroup will copy the parent cgroup values.
The userspace has to manually create a cgroup and add a task to
the 'tasks' file.
This patch removes the ns_cgroup as suggested in the following thread:
https://lists.linux-foundation.org/pipermail/containers/2009-June/018616.html
[...]
-----------
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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The mti malta board description for a little endian config can't
be found by default unless it has a matching KMACHINE, or the
KMACHINE is set in a kernel recipe. In this case, it is easier to
just add qemumipsel in the KMACHINE list, so the recipe doesn't
need to do the mapping.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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Creating the kernel support for a Cortex A9 qemu simulation.
qemu's versatile express ca9x9 machine is the base for this
BSP and has been validated with the following tune values:
require conf/machine/include/qemu.inc
require conf/machine/include/tune-cortexa9.inc
KERNEL_IMAGETYPE = "uImage"
SERIAL_CONSOLE = "115200 ttyAMA0"
qemu should be launched with the following arguments:
qemu-system-arm -M vexpress-a9 <normal options>
With 128M of memory and the console pointed at ttyAMA0,115200.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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Bruce Ashfield
Kishore Bodke
Paul Gortmaker
Michel Thebeau
Darren Hart
Nitin A Kamble
Tom Zanussi