On Tue, 26 Dec 2017 17:57:32 -0800
Alexei Starovoitov wrote:
> On Tue, Dec 26, 2017 at 04:46:59PM +0900, Masami Hiramatsu wrote:
> > Check whether error injectable event is on function entry or not.
> > Currently it checks the event is ftrace-based kprobes or not,
> > but that is wrong. It should
On Tue, Dec 26, 2017 at 07:43:40PM -0800, Matthew Wilcox wrote:
> Also add the xa_lock() and xa_unlock() family of wrappers to make it
> easier to use the lock. If we could rely on -fplan9-extensions in
> the compiler, we could avoid all of this syntactic sugar, but that
> wasn't a
On Tue, Dec 26, 2017 at 07:54:40PM +0300, Kirill A. Shutemov wrote:
> On Fri, Dec 15, 2017 at 02:03:35PM -0800, Matthew Wilcox wrote:
> > From: Matthew Wilcox
> >
> > This results in no change in structure size on 64-bit x86 as it fits in
> > the padding between the gfp_t and the void *.
>
> The
On Tue, Dec 26, 2017 at 08:21:53PM +0300, Kirill A. Shutemov wrote:
> > +/**
> > + * xa_is_internal() - Is the entry an internal entry?
> > + * @entry: Entry retrieved from the XArray
> > + *
> > + * Return: %true if the entry is an internal entry.
> > + */
>
> What does it mean "internal entry"?
On Tue, Dec 26, 2017 at 08:15:42PM +0300, Kirill A. Shutemov wrote:
> > 28 files changed, 249 insertions(+), 240 deletions(-)
>
> Everything looks fine to me after quick scan, but hat's a lot of changes for
> one patch...
Yeah. It's pretty mechanical though.
> > - if (radix_t
On Tue, Dec 26, 2017 at 04:48:25PM +0900, Masami Hiramatsu wrote:
> Support in-kernel fault-injection framework via debugfs.
> This allows you to inject a conditional error to specified
> function using debugfs interfaces.
>
> Signed-off-by: Masami Hiramatsu
> ---
> Documentation/fault-injection
On Tue, Dec 26, 2017 at 04:47:55PM +0900, Masami Hiramatsu wrote:
> Since error-injection framework is not limited to be used
> by kprobes, nor bpf. Other kernel subsystems can use it
> freely for checking safeness of error-injection, e.g.
> livepatch, ftrace etc.
> So this separate error-injection
On Tue, Dec 26, 2017 at 04:47:26PM +0900, Masami Hiramatsu wrote:
> Compare instruction pointer with original one on the
> stack instead using per-cpu bpf_kprobe_override flag.
>
> This patch also consolidates reset_current_kprobe() and
> preempt_enable_no_resched() blocks. Those can be done
> in
On Tue, Dec 26, 2017 at 04:46:59PM +0900, Masami Hiramatsu wrote:
> Check whether error injectable event is on function entry or not.
> Currently it checks the event is ftrace-based kprobes or not,
> but that is wrong. It should check if the event is on the entry
> of target function. Since error i
On 12/26/2017 06:28 PM, Qu Wenruo wrote:
On 2017年12月26日 16:17, Su Yue wrote:
On 12/21/2017 03:12 PM, Qu Wenruo wrote:
On 2017年12月21日 15:09, Su Yue wrote:
On 12/21/2017 02:51 PM, Qu Wenruo wrote:
On 2017年12月20日 16:37, Qu Wenruo wrote:
On 2017年12月20日 16:21, Su Yue wrote:
On 12
On Fri, Dec 15, 2017 at 02:03:38PM -0800, Matthew Wilcox wrote:
> From: Matthew Wilcox
>
> Instead of storing a pointer to the slot containing the canonical entry,
> store the offset of the slot. Produces slightly more efficient code
> (~300 bytes) and simplifies the implementation.
>
> Signed-
On Fri, Dec 15, 2017 at 02:03:37PM -0800, Matthew Wilcox wrote:
> From: Matthew Wilcox
>
> Introduce xarray value entries to replace the radix tree exceptional
> entry code. This is a slight change in encoding to allow the use of an
> extra bit (we can now store BITS_PER_LONG - 1 bits in a value
On Fri, Dec 15, 2017 at 02:03:36PM -0800, Matthew Wilcox wrote:
> From: Matthew Wilcox
>
> Remove the address_space ->tree_lock and use the xa_lock newly added to
> the radix_tree_root. Rename the address_space ->page_tree to ->pages,
> since we don't really care that it's a tree. Take the oppo
On Fri, Dec 15, 2017 at 02:03:35PM -0800, Matthew Wilcox wrote:
> From: Matthew Wilcox
>
> This results in no change in structure size on 64-bit x86 as it fits in
> the padding between the gfp_t and the void *.
The patch does more than described in the subject and commit message. At first
I was
On 2017年12月26日 16:17, Su Yue wrote:
>
>
> On 12/21/2017 03:12 PM, Qu Wenruo wrote:
>>
>>
>> On 2017年12月21日 15:09, Su Yue wrote:
>>>
>>>
>>> On 12/21/2017 02:51 PM, Qu Wenruo wrote:
On 2017年12月20日 16:37, Qu Wenruo wrote:
>
>
> On 2017年12月20日 16:21, Su Yue wrote:
>>
On 12/21/2017 03:12 PM, Qu Wenruo wrote:
On 2017年12月21日 15:09, Su Yue wrote:
On 12/21/2017 02:51 PM, Qu Wenruo wrote:
On 2017年12月20日 16:37, Qu Wenruo wrote:
On 2017年12月20日 16:21, Su Yue wrote:
On 12/20/2017 01:41 PM, Qu Wenruo wrote:
On 2017年12月20日 12:57, Su Yue wrote:
Introdu
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