On 3/14/2018 10:36 AM, Arnd Bergmann wrote:
The Tile architecture port was added by Chris Metcalf in 2010, and
maintained until early 2018 when he orphaned it due to his departure
from Mellanox, and nobody else stepped up to maintain it. The product
line is still around in the form of the
come.
Chris Metcalf (1):
arch/tile: mark as orphaned
MAINTAINERS | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
On 12/4/2017 3:25 PM, Stephen Rothwell wrote:
Hi Chris,
Given commit
8ee5ad1d4c0b ("arch/tile: mark as orphaned")
in Linus' tree, should I remove the tile tree from linux-next?
Yes, that would make sense. Good catch!
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
Metcalf
Signed-off-by: Chris Metcalf
---
This is my last week at Mellanox, and in the absence of customer
engagements, it doesn't seem to make sense to transition the tile
architecture maintainer role over to some other Mellanox employee.
It would be great if someone in the community were interest
On 11/7/2017 12:10 PM, Christopher Lameter wrote:
On Mon, 6 Nov 2017, Chris Metcalf wrote:
On 11/6/2017 10:38 AM, Christopher Lameter wrote:
What about that d*mn 1 Hz clock?
It's still there, so this code still requires some further work before
it can actually get a process into long
s and help make the last week of -rc8
pass more quickly by digging into this patch series! :-)
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
On 11/3/2017 1:32 PM, Mark Rutland wrote:
Hi Chris,
On Fri, Nov 03, 2017 at 01:04:48PM -0400, Chris Metcalf wrote:
In do_notify_resume(), call task_isolation_start() for
TIF_TASK_ISOLATION tasks. Add _TIF_TASK_ISOLATION to _TIF_WORK_MASK,
and define a local NOTIFY_RESUME_LOOP_FLAGS to check
rrupts, as explained by: commit 8fff52fd5093
("clockevents: Introduce CLOCK_EVT_STATE_ONESHOT_STOPPED state").
Signed-off-by: Chris Metcalf
---
arch/tile/kernel/time.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/tile/kernel/time.c b/arch/tile/kernel/time.c
index 6643ff
On 11/3/2017 1:18 PM, Mark Rutland wrote:
Hi Chris,
On Fri, Nov 03, 2017 at 01:04:51PM -0400, Chris Metcalf wrote:
diff --git a/drivers/clocksource/arm_arch_timer.c
b/drivers/clocksource/arm_arch_timer.c
index fd4b7f684bd0..61ea7f907c56 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b
Linus,
Please pull the following two commits for 4.14 from:
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile.git master
These are both one-line bug fixes.
Chris Metcalf (1):
arch/tile: Implement ->set_state_oneshot_stopped()
Luc Van Oostenryck (1):
tile: p
On 11/3/2017 1:23 PM, Russell King - ARM Linux wrote:
On Fri, Nov 03, 2017 at 01:04:49PM -0400, Chris Metcalf wrote:
From: Francis Giraldeau
This patch is a port of the task isolation functionality to the arm 32-bit
architecture. The task isolation needs an additional thread flag that
r, so that
for example smp_send_reschedule() is a single generic function that
just calls arch_smp_send_reschedule(), allowing generic code to be
called every time smp_send_reschedule() is invoked. But for now,
we just update either callers or callees as makes most sense.
Signed-off-by: Chr
Giraldeau
Signed-off-by: Chris Metcalf [with modifications]
---
arch/arm/Kconfig | 1 +
arch/arm/include/asm/thread_info.h | 10 +++---
arch/arm/kernel/entry-common.S | 12
arch/arm/kernel/ptrace.c | 10 ++
arch/arm/kernel/signal.c
We instrument the smp_send_reschedule() routine so that it checks for
isolated tasks and generates a suitable warning if needed.
Finally, report on page faults in task-isolation processes in
do_page_faults().
Signed-off-by: Chris Metcalf
---
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/
, namely non-signalling page faults
and non-signalling MPX fixups.
Signed-off-by: Chris Metcalf
---
arch/x86/Kconfig | 1 +
arch/x86/entry/common.c| 14 ++
arch/x86/include/asm/apic.h| 3 +++
arch/x86/include/asm/thread_info.h | 8 +---
arch
This API checks to see if the scheduler tick can be stopped,
and if so, stops it and returns 0; otherwise it returns an error.
This is intended for use with task isolation, where we will want to
be able to stop the tick synchronously when returning to userspace.
Signed-off-by: Chris Metcalf
reschedule IPI to
be sent to the remote core so it can be sure to generate a
signal to notify the process.
Separate patches that follow provide these changes for x86, tile,
arm, and arm64.
Signed-off-by: Chris Metcalf
---
Documentation/admin-guide/kernel-parameters.txt | 6 +
include/linux/i
This reverts commit f11cc0760b8397e0d230122606421b6a96e9f869.
We do need this function for try_get_task_struct_on_cpu().
Signed-off-by: Chris Metcalf
---
include/linux/sched/task.h | 2 ++
kernel/exit.c | 13 +
2 files changed, 15 insertions(+)
diff --git a/include
interval will properly re-enable it.
This fix avoids a small performance hiccup for regular applications,
but for TASK_ISOLATION code, it fixes a potentially serious
kernel timer interruption to the time-sensitive application.
Signed-off-by: Chris Metcalf
Acked-by: Daniel Lezcano
---
arch/tile/kernel
This code tests various aspects of task_isolation.
Signed-off-by: Chris Metcalf
---
tools/testing/selftests/Makefile | 1 +
tools/testing/selftests/task_isolation/Makefile| 6 +
tools/testing/selftests/task_isolation/config | 1 +
tools/testing/selftests
y not generate signals to the application.
Signed-off-by: Chris Metcalf
---
arch/tile/Kconfig | 1 +
arch/tile/include/asm/thread_info.h | 2 ++
arch/tile/kernel/hardwall.c | 2 ++
arch/tile/kernel/irq.c | 3 +++
arch/tile/kernel/messaging.c| 4
;
it uses try_get_task_struct() to increment the ref count on the
returned task_struct so that the caller can examine it even if
the actual remote task has already exited by that point.
Signed-off-by: Chris Metcalf
---
include/linux/sched/task.h | 1 +
kernel/sched/core.c| 11
This function checks to see if a vmstat worker is not running,
and the vmstat diffs don't require an update. The function is
called from the task-isolation code to see if we need to
actually do some work to quiet vmstat.
Acked-by: Christoph Lameter
Signed-off-by: Chris Metcalf
---
in
guarantees that the vmstat worker
will not run on the core on return from the function. Add a
quiet_vmstat_sync() function with that semantic.
Signed-off-by: Chris Metcalf
---
include/linux/vmstat.h | 2 ++
mm/vmstat.c| 9 +
2 files changed, 11 insertions(+)
diff --git a/inc
ll there, so this code still requires some further work before
it can actually get a process into long-term task isolation (without
the obvious one-line kernel hack). Frederic suggested a while ago
forcing updates on cpustats was required as the last gating factor; do
we think that is still true? C
in no
matter what, to allow ensuring kernel isolation when you absolutely
require it.)
The current task isolation tree is in the "dataplane" branch at
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile.git
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
, but the use case above is what the driver
primarily supports.
It is structured as a simple sysfs driver that is loaded based on
an ACPI table entry, and allows reading/writing text strings to
various /sys/bus/platform/drivers/mlx-bootctl/* files.
Signed-off-by: Chris Metcalf
---
Ingo, since there
):
tile: defconfig: Cleanup from old Kconfig options
arch/tile/configs/tilegx_defconfig | 1 -
arch/tile/configs/tilepro_defconfig | 2 --
arch/tile/kernel/setup.c| 2 +-
3 files changed, 1 insertion(+), 4 deletions(-)
--
Chris Metcalf, Mellanox Technologies
http
me to work
on it. I really would like to get out a new spin. Fingers crossed.
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
On 8/11/2017 2:36 AM, Mike Galbraith wrote:
On Thu, 2017-08-10 at 09:57 -0400, Chris Metcalf wrote:
On 8/10/2017 8:54 AM, Frederic Weisbecker wrote:
But perhaps I should add a new NO_HZ_FULL_BUT_HOUSEKEEPING option.
Otherwise we'll change the meaning of NO_HZ_FULL_ALL way too much, t
ing NOHZ_FULL on the core...
or maybe it's just implied by TASK_ISOLATION. I've done a bad job of finding
time
to work on that since last year's Plumbers, but September looks good :)
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
ff-by: Dou Liyang
Cc: Chris Metcalf
---
arch/tile/include/asm/topology.h | 6 --
1 file changed, 6 deletions(-)
Acked-by: Chris Metcalf
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
n into the tile tree.
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
tick
offloading (remove residual 1Hz) and all unbound kthreads.
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
nohz/0hz
HEAD: 68e3af1de5db228bf6c2a5e721bce59a02cfc4e1
For the series:
Reviewed-by: Chris Metcalf
I spotted a few typos that you should grep for and fi
nts of
ulog targets");
Signed-off-by: Krzysztof Kozlowski
---
arch/tile/configs/tilegx_defconfig | 1 -
arch/tile/configs/tilepro_defconfig | 2 --
2 files changed, 3 deletions(-)
Thanks! Taken into the tile tree.
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
ASAN, but I haven't looked deeply at the
tradeoffs here.
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
Linus,
Please pull the following changes for 4.13 from:
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile.git
master
This adds support for an to help with removing __need_xxx
#defines from glibc, and removes some dead code in arch/tile/mm/init.c.
Chris Metcalf (1
any of the other SC atomic
primitives and therefore seem to rely on their spinlock implementation
being SC (I did not fully validate all that).
Therefore, the normal atomic_set() is SC and can be used at
atomic_set_release().
Acked-by: Chris Metcalf [for tile]
--
Chris Metcalf, Mellan
e the
tilegx/tilepro issues were sorted out -- as someone noted, you need
to have the kernel headers available to build glibc. However, if
there are any outstanding tile issues, please feel free to loop me in!
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
ause nobody has
noticed that __add_pages has a different signature since 2009.
Cc: Chris Metcalf
Signed-off-by: Michal Hocko
---
arch/tile/mm/init.c | 30 --
1 file changed, 30 deletions(-)
Thanks - taken into the tile tree.
--
Chris Metcalf, Mellanox Te
As part of some work in glibc to move away from the "__need" prefix,
this commit breaks away the definitions of __int_reg_t, __uint_reg_t,
__INT_REG_BITS, and __INT_REG_FMT to a separate
"microheader". It is then included from to preserve
the semantics of the previous header.
For now, we contin
laby
Acked-by: Chris Metcalf [for tile]
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
for man-pages, describing the new prctl calls, is
missing.
Thanks, I appreciate the feedback. I'll fold this into the next spin of the
series!
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
/parport/jobs/194717687
arch/tile/include/asm/div64.h | 1 +
1 file changed, 1 insertion(+)
Acked-by: Chris Metcalf
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
/kernel/ptrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
On 12/20/2016 4:27 AM, Paolo Bonzini wrote:
On 16/12/2016 22:00, Chris Metcalf wrote:
Sorry, I think I wasn't clear. Normally when you are running task
isolated and you enter the kernel, you will get a fatal signal. The
exception is if you call prctl itself (or exit), the kernel tolerat
Sorry for the slow response - I have been busy with some other things.
On 12/6/2016 4:43 PM, yunhong jiang wrote:
On Fri, 2 Dec 2016 13:58:08 -0500
Chris Metcalf wrote:
On 12/1/2016 5:28 PM, yunhong jiang wrote:
a) If the task isolation need prctl to mark itself as isolated,
possibly the
Linus,
Please pull the following changes for 4.10 from:
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile.git master
Another grab-bag of miscellaneous changes.
Chris Metcalf (2):
tile: remove #pragma unroll from finv_buffer_remote()
tile: use __ro_after_init
, gcc-5.4, gcc-6.2: bad
I also found 4.4 was good on tilegx at recognizing the 32x32, and bad on
the later versions I tested; I don't recall which specific later versions I
tried, though.
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
ux/math64.h| 26 ++
4 files changed, 42 insertions(+), 9 deletions(-)
Untested, but I looked at it closely, and it seems like a decent idea.
Acked-by: Chris Metcalf [for tile]
Of course if this is pushed up, it will then probably be too tempting for me not
to
urn off the task isolation before yield the CPU and the restart the
task isolation after the new packet, right?
Yes, exactly.
I am not likely to pursue KVM myself, at least until the basic patch series
has been accepted upstream.
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
Commit-ID: ec4101e8903e318b9fd4e3bbf72b1eaba53c64e1
Gitweb: http://git.kernel.org/tip/ec4101e8903e318b9fd4e3bbf72b1eaba53c64e1
Author: Chris Metcalf
AuthorDate: Mon, 28 Nov 2016 14:35:20 -0800
Committer: Thomas Gleixner
CommitDate: Tue, 29 Nov 2016 18:02:58 +0100
timekeeping
Linus,
Please pull the following change for 4.9-rc7 from:
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile.git stable
This fixes a bug that causes reboots after 208 days of uptime :-)
Chris Metcalf (1):
tile: avoid using clocksource_cyc2ns with absolute cycle count
On 11/21/2016 3:54 AM, Ingo Molnar wrote:
* John Stultz wrote:
From: Chris Metcalf
The "cycles" argument should not be an absolute clocksource cycle
value, as the implementation's arithmetic will overflow relatively
easily with wide (64 bit) clocksource counters.
For p
On 11/18/2016 5:34 AM, Peter Zijlstra wrote:
On Thu, Nov 17, 2016 at 03:00:14PM -0500, Chris Metcalf wrote:
On 11/17/2016 4:53 AM, Peter Zijlstra wrote:
On Wed, Nov 16, 2016 at 03:16:59PM -0500, Chris Metcalf wrote:
PeterZ (cc'ed) then improved it to use __int128 math via
mul_u64_u3
On 11/17/2016 4:53 AM, Peter Zijlstra wrote:
On Wed, Nov 16, 2016 at 03:16:59PM -0500, Chris Metcalf wrote:
PeterZ (cc'ed) then improved it to use __int128 math via
mul_u64_u32_shr(), but that doesn't help tile; we only do one multiply
instead of two, but the multiply is handled by
On 11/16/2016 2:59 PM, John Stultz wrote:
On Wed, Nov 16, 2016 at 11:35 AM, Chris Metcalf wrote:
For large values of "mult" and long uptimes, the intermediate
result of "cycles * mult" can overflow 64 bits. For example,
the tile platform calls clocksource_cyc2ns with a 1.
On 11/16/2016 2:45 PM, John Stultz wrote:
On Wed, Nov 16, 2016 at 11:30 AM, Chris Metcalf wrote:
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 08398182f56e..529884b8 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -171,6 +171,10
way by changing the type of "nsec" to unsigned
and adding a comment explaining why.
Signed-off-by: Chris Metcalf
---
v2: just use "u64 nsec" to fix the signed shift problem
kernel/time/timekeeping.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a
On 11/16/2016 1:04 PM, John Stultz wrote:
On Wed, Nov 16, 2016 at 8:57 AM, Chris Metcalf wrote:
include/linux/clocksource.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 08398182f56e..b2a022acf232 100644
On 11/16/2016 3:00 PM, John Stultz wrote:
On Wed, Nov 16, 2016 at 11:56 AM, Chris Metcalf wrote:
On 11/16/2016 2:45 PM, John Stultz wrote:
On Wed, Nov 16, 2016 at 11:30 AM, Chris Metcalf
wrote:
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 08398182f56e
() is intended to be used for relative
cycle counts, not absolute cycle counts, performance is more
importance than accepting a wider range of cycle values.
So, just use mult_frac() directly in tile's sched_clock().
Signed-off-by: Chris Metcalf
---
Blackfin should make a similar change in th
same as the fix for arch/x86 __cycles_2_ns()
in commit 4cecf6d401a0 ("sched, x86: Avoid unnecessary overflow in
sched_clock"), using the new mult_frac() helper.
In addition to tile, arm/plat-omap and blackfin also use this helper
function, so will presumably hit similar issues.
Signed
Linus,
Please pull the following change for 4.9-rc6 from:
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile.git stable
This just fixes an incompatibility with tile __ro_after_init.
Chris Metcalf (1):
tile: handle __ro_after_init like parisc does
arch/tile/include/asm
. __read_mostly.
Signed-off-by: Chris Metcalf
---
arch/tile/include/asm/cache.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/tile/include/asm/cache.h b/arch/tile/include/asm/cache.h
index 6160761d5f61..4810e48dbbbf 100644
--- a/arch/tile/include/asm/cache.h
+++ b/arch/tile/include/asm
This bugfix was originally made in commit 35a4933a8959 ("time:
Avoid signed overflow in timekeeping_get_ns()"). When the code was
refactored in commit 6bd58f09e1d8 ("time: Add cycles to nanoseconds
translation") the signed overflow fix was lost. Re-introduce it.
Signed-o
The code was already configured that way, but the Kconfig
file didn't support requesting it.
A buglet caused a null pointer deref when unloading the
module, but this commit also corrects that issue.
Signed-off-by: Chris Metcalf
---
This is in response to Paul's patch (see the i
This is the minimal change to handle RO_AFTER_INIT_DATA.
The tile architecture already marks RO_DATA as read-only in
the kernel, so grouping RO_AFTER_INIT_DATA with RO_DATA, as is
done by default, means the kernel faults in init when it tries
to write to RO_AFTER_INIT_DATA. For now, just move it p
fix this for tile and
arm64 in my patch series; Thomas volunteered to look at adding
equivalent support for x86.
Many thanks to all those who participated in the discussion.
Frederic, we wished you had been there!
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
tile" here is particularly
confusing, since there are no architectures except tile that use the
__SYSCALL_COMPAT functionality in the current tree.
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
actual implementation definition, like "have their top 32 bits
zeroed".
+AARCH64/ILP32 provides next types turned to 64-bit (comparing to AARCH32):
What does "turned" mean here? And I "next types" isn't standard English; you
want
to say something like &quo
On 9/27/2016 10:35 AM, Frederic Weisbecker wrote:
On 8/16/2016 5:19 PM, Chris Metcalf wrote:
Here is a respin of the task-isolation patch set.
Again, I have been getting email asking me when and where this patch
will be upstreamed so folks can start using it. I had been thinking
the obvious
On 8/30/2016 2:43 PM, Andy Lutomirski wrote:
On Aug 30, 2016 10:02 AM, "Chris Metcalf" wrote:
We really want to run task isolation last, so we can guarantee that
all the isolation prerequisites are met (dynticks stopped, per-cpu lru
cache empty, etc). But achieving that state c
dable at least) with any further changes.
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
On 9/16/2016 3:11 AM, Marcin Nowakowski wrote:
Add missing arch code - arch_trace_is_compat_syscall and
arch_syscall_addr
Signed-off-by: Marcin Nowakowski
Cc:Cc: Steven Rostedt
Cc: Ingo Molnar
Cc: Chris Metcalf
---
arch/tile/include/asm/ftrace.h | 10 ++
arch/tile/kernel/Makefile
x27;t really need to compile
these files.
Cc: Chris Metcalf
Signed-off-by: Paul Gortmaker
---
[see:https://lkml.org/lkml/2016/7/24/224 for additional context if needed]
arch/tile/kernel/unaligned.c | 2 +-
arch/tile/mm/extable.c | 2 +-
arch/tile/mm/fault.c | 2 +-
3 files c
uration
and boot argument details.
I can work on that and also write some doc (Documentation/task-isolation.txt ?).
Sure, documentation is always welcome!
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
On 9/12/2016 1:41 PM, Andy Lutomirski wrote:
On Sep 9, 2016 1:40 PM, "Chris Metcalf" wrote:
On 9/2/2016 1:28 PM, Andy Lutomirski wrote:
On Sep 2, 2016 7:04 AM, "Chris Metcalf" wrote:
On 8/30/2016 3:50 PM, Andy Lutomirski wrote:
On Tue, Aug 30, 2016 at 12:37 PM, Chris Me
On 9/7/2016 5:11 PM, Francis Giraldeau wrote:
On 2016-08-29 12:27 PM, Chris Metcalf wrote:
On 8/16/2016 5:19 PM, Chris Metcalf wrote:
Here is a respin of the task-isolation patch set.
No concerns have been raised yet with the v15 version of the patch series
in the two weeks since I posted it
On 9/3/2016 11:31 AM, Frederic Weisbecker wrote:
On Tue, Aug 30, 2016 at 02:17:27PM -0400, Chris Metcalf wrote:
On 8/30/2016 1:36 PM, Chris Metcalf wrote:
See the other thread with Peter Z for the longer discussion of this.
At this point I'm leaning towards replacing the set_tsk_need_re
On 9/2/2016 1:28 PM, Andy Lutomirski wrote:
On Sep 2, 2016 7:04 AM, "Chris Metcalf" wrote:
On 8/30/2016 3:50 PM, Andy Lutomirski wrote:
On Tue, Aug 30, 2016 at 12:37 PM, Chris Metcalf wrote:
On 8/30/2016 2:43 PM, Andy Lutomirski wrote:
What if we did it the other way around: se
On 9/8/2016 7:21 AM, Nicolai Stange wrote:
Chris Metcalf writes:
On 08/22/2016 07:33 PM, Nicolai Stange wrote:
With the yet to come introduction of NTP correction awareness to the
clockevent core, drivers should report their valid ranges in units of
cycles to the latter.
Currently, the
n any case, so the extra
optimization here was mostly just for it's own sake.
Signed-off-by: Chris Metcalf
---
arch/tile/lib/cacheflush.c | 8 +---
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/arch/tile/lib/cacheflush.c b/arch/tile/lib/cacheflush.c
index 9c0ec22009a
e.
Initialize ->min_delta_ticks and ->max_delta_ticks with these values.
Signed-off-by: Nicolai Stange
---
arch/tile/kernel/time.c | 2 ++
1 file changed, 2 insertions(+)
Thanks. Taken into the tile tree.
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
+--
1 file changed, 5 insertions(+), 6 deletions(-)
Thanks! Taken into the tile tree.
--
Chris Metcalf, Mellanox Technologies
http://www.mellanox.com
On 8/30/2016 3:50 PM, Andy Lutomirski wrote:
On Tue, Aug 30, 2016 at 12:37 PM, Chris Metcalf wrote:
On 8/30/2016 2:43 PM, Andy Lutomirski wrote:
What if we did it the other way around: set a percpu flag saying
"going quiescent; disallow new deferred work", then finish all
existin
On 9/1/2016 6:06 AM, Peter Zijlstra wrote:
On Tue, Aug 30, 2016 at 11:32:16AM -0400, Chris Metcalf wrote:
On 8/30/2016 3:58 AM, Peter Zijlstra wrote:
What !? I really don't get this, what are you waiting for? Why is
rescheduling making things better.
We need to wait for the last dynti
On 8/30/2016 1:10 PM, Frederic Weisbecker wrote:
On Tue, Aug 30, 2016 at 11:41:36AM -0400, Chris Metcalf wrote:
On 8/29/2016 8:55 PM, Frederic Weisbecker wrote:
On Mon, Aug 15, 2016 at 10:59:55AM -0400, Chris Metcalf wrote:
On 8/11/2016 2:50 PM, Christoph Lameter wrote:
On Thu, 11 Aug 2016
On 8/30/2016 2:43 PM, Andy Lutomirski wrote:
On Aug 30, 2016 10:02 AM, "Chris Metcalf" wrote:
On 8/30/2016 12:30 PM, Andy Lutomirski wrote:
On Tue, Aug 30, 2016 at 8:32 AM, Chris Metcalf wrote:
The basic idea is just that we don't want to be at risk from the
dyntick
On 8/30/2016 1:36 PM, Chris Metcalf wrote:
See the other thread with Peter Z for the longer discussion of this.
At this point I'm leaning towards replacing the set_tsk_need_resched() with
set_current_state(TASK_INTERRUPTIBLE);
schedule();
__set_current_state(TASK_RUNNING
On 8/30/2016 12:30 PM, Andy Lutomirski wrote:
On Tue, Aug 30, 2016 at 8:32 AM, Chris Metcalf wrote:
On 8/30/2016 3:58 AM, Peter Zijlstra wrote:
On Mon, Aug 29, 2016 at 12:40:32PM -0400, Chris Metcalf wrote:
On 8/29/2016 12:33 PM, Peter Zijlstra wrote:
On Tue, Aug 16, 2016 at 05:19:27PM
On 8/29/2016 8:55 PM, Frederic Weisbecker wrote:
On Mon, Aug 15, 2016 at 10:59:55AM -0400, Chris Metcalf wrote:
On 8/11/2016 2:50 PM, Christoph Lameter wrote:
On Thu, 11 Aug 2016, Frederic Weisbecker wrote:
Do we need to quiesce vmstat everytime before entering userspace?
I thought that
On 8/30/2016 3:58 AM, Peter Zijlstra wrote:
On Mon, Aug 29, 2016 at 12:40:32PM -0400, Chris Metcalf wrote:
On 8/29/2016 12:33 PM, Peter Zijlstra wrote:
On Tue, Aug 16, 2016 at 05:19:27PM -0400, Chris Metcalf wrote:
+ /*
+* Request rescheduling unless we are in full dynticks mode
On 8/16/2016 5:19 PM, Chris Metcalf wrote:
Here is a respin of the task-isolation patch set.
Again, I have been getting email asking me when and where this patch
will be upstreamed so folks can start using it. I had been thinking
the obvious path was via Frederic Weisbecker to Ingo as a NOHZ
On 8/29/2016 12:48 PM, Peter Zijlstra wrote:
On Mon, Aug 29, 2016 at 12:40:32PM -0400, Chris Metcalf wrote:
On 8/29/2016 12:33 PM, Peter Zijlstra wrote:
On Tue, Aug 16, 2016 at 05:19:27PM -0400, Chris Metcalf wrote:
+ /*
+* Request rescheduling unless we are in full dynticks
On 8/29/2016 12:33 PM, Peter Zijlstra wrote:
On Tue, Aug 16, 2016 at 05:19:27PM -0400, Chris Metcalf wrote:
+ /*
+* Request rescheduling unless we are in full dynticks mode.
+* We would eventually get pre-empted without this, and if
+* there's another task wa
On 8/18/2016 11:42 AM, Colin King wrote:
From: Colin Ian King
trivial fix to spelling mistake in pr_warn message
Signed-off-by: Colin Ian King
---
arch/tile/kernel/pci_gx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Thanks; taken into the tile tree!
--
Chris Metcalf, Mellanox
racing API (sparc64 and mips) are converted
to use the cpumask approach rather than the all/allbutself approach.
The mips code ignored the "include_self" boolean but with this change
it will now also dump a local backtrace if requested.
Signed-off-by: Chris Metcalf
Reviewed-by: Aaron Tomli
register state will be missing,
but that state is likely not particularly helpful in any case.
Or, if we think it is helpful, we should be capturing and emitting
the current register state in all cases when regs == NULL is passed
to nmi_cpu_backtrace().
Signed-off-by: Chris Metcalf
Acked-by
backtrace if the old one was still in progress.
Signed-off-by: Chris Metcalf
---
arch/tile/include/asm/irq.h | 5 ++--
arch/tile/kernel/pmc.c | 3 --
arch/tile/kernel/process.c | 73 +++--
arch/tile/kernel/traps.c| 9 --
4 files changed, 27
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