litmus-rt.git, branch 2012.3 The LITMUS^RT kernel. Protect SCHED_LITMUS tasks from reschedules triggered by SCHED_FIFO enqueues. 2012-12-21T12:37:14+00:00 Jonathan Herman hermanjl@cs.unc.edu 2012-12-01T19:44:37+00:00 c158b5fbe42dacd34393082b6b8f9f6573ab8c5c (BB: edited to include <litmus/litmus.h> to resolve compile error.) 
(BB: edited to include <litmus/litmus.h> to resolve compile error.)
Config: PREEMPT_STATE_TRACE depends on DEBUG_KERNEL. 2012-12-11T16:39:04+00:00 Christopher Kenna cjk@cs.unc.edu 2012-12-11T16:39:04+00:00 31477ed8ca65bb0a3ed3de4cb6df841e6a785471 This patch makes CONFIG_PREEMPT_STATE_TRACE depend on CONFIG_DEBUG_KERNEL. Prior to this patch, selecting PREEMPT_STATE_TRACE resulted in linker errors (see below), because sched_state_name is not built unless DEBUG_KERNEL is selected. kernel/built-in.o: In function `schedule': (.sched.text+0x3d2): undefined reference to `sched_state_name' 
This patch makes CONFIG_PREEMPT_STATE_TRACE depend on
CONFIG_DEBUG_KERNEL. Prior to this patch, selecting PREEMPT_STATE_TRACE
resulted in linker errors (see below), because sched_state_name is not
built unless DEBUG_KERNEL is selected.

kernel/built-in.o: In function `schedule':
(.sched.text+0x3d2): undefined reference to `sched_state_name'
Send reboot notifications to Litmus 2012-12-07T19:39:40+00:00 Glenn Elliott gelliott@cs.unc.edu 2012-12-07T19:31:07+00:00 e5e0247f927753dc0f22c84773aa48a0beb0d8f9 This patch causes reboot notifications to be send to Litmus. With this patch, Litmus attempts to switch back to the Linux-plugin before the reboot proceeds. Any failures to switch back are reported via printk() (the reboot is not halted). 
This patch causes reboot notifications to be send
to Litmus.  With this patch, Litmus attempts to
switch back to the Linux-plugin before the reboot
proceeds.  Any failures to switch back are reported
via printk() (the reboot is not halted).
litmus: get rid of unused RT_F_EXIT_SEM flag 2012-11-27T18:50:17+00:00 Manohar Vanga mvanga@mpi-sws.org 2012-10-03T23:06:01+00:00 63537c738e7eb0ad6bc064b5e47c88092897c1cb This patch removes the RT_F_EXIT_SEM flag. All code paths depending on it being true are assumed to be unreachable and removed. The 'flags' field in struct rt_params is left as-is for use by specific schedulers. For example, sched_pfair defines a custom flag RT_F_REQUEUE within the 'flags' field. Signed-off-by: Manohar Vanga <mvanga@mpi-sws.org> 
This patch removes the RT_F_EXIT_SEM flag. All code paths
depending on it being true are assumed to be unreachable
and removed.

The 'flags' field in struct rt_params is left as-is for
use by specific schedulers. For example, sched_pfair
defines a custom flag RT_F_REQUEUE within the 'flags'
field.

Signed-off-by: Manohar Vanga <mvanga@mpi-sws.org>
litmus: use is_present() instead of using rt_param->present 2012-11-27T18:50:17+00:00 Manohar Vanga mvanga@mpi-sws.org 2012-10-03T22:35:53+00:00 e2c4a5f574548f7b2b1d55adab3b02fb2d068ea3 Signed-off-by: Manohar Vanga <mvanga@mpi-sws.org> 
Signed-off-by: Manohar Vanga <mvanga@mpi-sws.org>
litmus: get rid of RT_F_SLEEP and RT_F_RUNNING 2012-11-27T18:50:17+00:00 Manohar Vanga mvanga@mpi-sws.org 2012-10-03T22:30:51+00:00 b7012aa7edba4b88906fc39b9005ff4dae69be59 This patch removes the flags RT_F_SLEEP and RT_F_RUNNING as their name is misleading. This patch replaces them with a 'completed' field in struct rt_param. Signed-off-by: Manohar Vanga <mvanga@mpi-sws.org> 
This patch removes the flags RT_F_SLEEP and RT_F_RUNNING
as their name is misleading. This patch replaces them with
a 'completed' field in struct rt_param.

Signed-off-by: Manohar Vanga <mvanga@mpi-sws.org>
litmus: fix warning about unused label in sched_pfp.c 2012-11-27T18:50:16+00:00 Manohar Vanga mvanga@mpi-sws.org 2012-10-03T20:21:05+00:00 e99428ce6786f76b64cfea5da814a7a5cd939de3 This patch fixes a warning about an unused label in sched_pfp.c when CONFIG_LITMUS_LOCKING is not set. Signed-off-by: Manohar Vanga <mvanga@mpi-sws.org> 
This patch fixes a warning about an unused label in sched_pfp.c
when CONFIG_LITMUS_LOCKING is not set.

Signed-off-by: Manohar Vanga <mvanga@mpi-sws.org>
litmus: fix compiler warning in sched_plugin.h 2012-11-27T18:50:16+00:00 Manohar Vanga mvanga@mpi-sws.org 2012-10-03T20:17:51+00:00 635073dd057be83073a36cf0287a08a716d37784 This patch fixes the compiler warning about struct litmus_locking being defined in the parameter list when CONFIG_LITMUS_LOCKING is not set. Signed-off-by: Manohar Vanga <mvanga@mpi-sws.org> 
This patch fixes the compiler warning about struct litmus_locking
being defined in the parameter list when CONFIG_LITMUS_LOCKING is
not set.

Signed-off-by: Manohar Vanga <mvanga@mpi-sws.org>
P-FP: be less permissive about non-running tasks in queue 2012-10-18T20:14:10+00:00 Bjoern Brandenburg bbb@mpi-sws.org 2012-09-10T08:23:15+00:00 f0785d83a7ecdbe7f634fca6e1fd01beb9383e40 No suspended task should ever be queued in this plugin. 
No suspended task should ever be queued in this plugin.
P-FP: be paranoid in the preemption case 2012-10-18T20:14:10+00:00 Bjoern Brandenburg bbb@mpi-sws.org 2012-09-06T12:40:15+00:00 9e6b747ce5c8ae700441d42d84c723832d91ecf8 Crash and burn if an expected preemption didn't happen. This is useful to flag any bugs in the queue management code... 
Crash and burn if an expected preemption didn't happen. This is useful
to flag any bugs in the queue management code...