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Opened on Jan 7, 2011 at 6:09:30 PM
Closed on Apr 4, 2011 at 3:48:02 PM
#1729 closed enhancement (fixed)
SMP Step #2
| Reported by: | Jennifer Averett | Owned by: | Joel Sherrill |
|---|---|---|---|
| Priority: | normal | Milestone: | 4.11 |
| Component: | score | Version: | 4.11 |
| Severity: | minor | Keywords: | |
| Cc: | ralf.corsepius@…, sebastian.huber@…, gedare@… | Blocked By: | |
| Blocking: |
Description
This patch contains the next step on the path to SMP support. It adds an allocated array of the Per_CPU structures to support multiple cpus vs a single instance of the structure which is still used if SMP support is disabled. Configuration support was added to explicitly enable or disable SMP. But SMP can only be enabled for the CPUs which will support it initially -- SPARC and i386.
Stub BSP support for SMP was added which lets us treat a single CPU system as a single core SMP from an RTEMS data structure standpoint. This lets us verify that we can allocate a array of one per CPU structures, create one IDLE task, etc.
The i386 and sparc bsps are modified to be able to run when configured as SMP using the stub BSP support.
The NEXT patch adds "real" SMP BSP support for the pc386 and LEON3 BSPs. But since there is not an SMP aware scheduler yet, it is only exercised by test programs which verify we can bring cores 2-n out of reset and initialize them. We have to have an SMP aware scheduler to have tasks scheduled on those cores.
Attachments (8)
Change History (21)
Changed on Jan 7, 2011 at 6:09:30 PM by Jennifer Averett
| Attachment: | smp-Patch.diff added |
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Changed on Jan 7, 2011 at 6:11:11 PM by Jennifer Averett
| Attachment: | smp-Patch-files.tar.bz2 added |
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The smp directories that should be added with the SMP Single Core patch.
comment:1 Changed on Jan 7, 2011 at 6:11:37 PM by Jennifer Averett
| attachments.ispatch: | 0 → 1 |
|---|---|
| attachments.mimetype: | application/octet-stream → text/plain |
comment:2 Changed on Jan 21, 2011 at 3:26:45 PM by Sebastian Huber
| Cc: | Sebastian Huber added |
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| dependson: | → 1607 |
comment:3 Changed on Jan 26, 2011 at 7:37:41 PM by Gedare Bloom
| Cc: | giddyup44@… added |
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Changed on Jan 27, 2011 at 6:27:52 PM by Jennifer Averett
| Attachment: | smp2_02.tar.bz2 added |
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Patch to add SMP single core support.
comment:4 Changed on Jan 27, 2011 at 6:27:52 PM by Jennifer Averett
| attachments.isobsolete: | 0 → 1 |
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Changed on Jan 27, 2011 at 6:30:01 PM by Jennifer Averett
| Attachment: | smp2_02.tar_v1.bz2 added |
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smp directories to add with the SMP Single Core Patch.
comment:5 Changed on Jan 27, 2011 at 6:30:01 PM by Jennifer Averett
| attachments.isobsolete: | 0 → 1 |
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Changed on Jan 27, 2011 at 6:39:17 PM by Jennifer Averett
| Attachment: | smp2_02.diff added |
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Patch to add SMP single core support.
comment:6 Changed on Jan 27, 2011 at 6:39:17 PM by Jennifer Averett
| attachments.isobsolete: | 0 → 1 |
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comment:7 Changed on Jan 27, 2011 at 6:40:42 PM by Jennifer Averett
| attachments.ispatch: | 0 → 1 |
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Changed on Feb 2, 2011 at 2:09:50 PM by Jennifer Averett
| Attachment: | smp2_03.diff added |
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Consolidated and cleaned up patch for Support SMP Single Core
comment:8 Changed on Feb 2, 2011 at 2:09:50 PM by Jennifer Averett
| attachments.isobsolete: | 0 → 1, 1 |
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Changed on Feb 11, 2011 at 7:03:33 PM by Jennifer Averett
| Attachment: | smp2_04.diff added |
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SMP Patch with suggested modifications
comment:9 Changed on Feb 11, 2011 at 7:03:33 PM by Jennifer Averett
| attachments.isobsolete: | 0 → 1 |
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comment:10 Changed on Feb 23, 2011 at 10:47:51 AM by Ralf Corsepius
| Cc: | Ralf Corsepius added |
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comment:11 Changed on Mar 9, 2011 at 5:09:24 PM by Jennifer Averett
| attachments.isobsolete: | 0 → 1 |
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comment:12 Changed on Apr 4, 2011 at 3:48:02 PM by Joel Sherrill
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
Patch committed.
comment:13 Changed on Nov 24, 2014 at 6:58:28 PM by Gedare Bloom
| Version: | HEAD → 4.11 |
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Replace Version=HEAD with Version=4.11 for the tickets with Milestone >= 4.11
Patch to add SMP single core support. This should be used in conjunction with the tar ball that has the added smp directories.