Revision tags: v5.15.41, v5.15.40, v5.15.39, v5.15.38, v5.15.37, v5.15.36, v5.15.35, v5.15.34, v5.15.33, v5.15.32, v5.15.31, v5.15.30, v5.15.29, v5.15.28, v5.15.27, v5.15.26, v5.15.25, v5.15.24, v5.15.23, v5.15.22, v5.15.21, v5.15.20, v5.15.19, v5.15.18, v5.15.17, v5.4.173, v5.15.16, v5.15.15, v5.15.10, v5.15.9, v5.15.8, v5.15.7, v5.15.6, v5.15.5, v5.15.4, v5.15.3, v5.15.2, v5.15.1, v5.15, v5.14.14, v5.14.13, v5.14.12, v5.14.11, v5.14.10, v5.14.9, v5.14.8, v5.14.7, v5.14.6, v5.10.67, v5.10.66, v5.14.5, v5.14.4, v5.10.65, v5.14.3, v5.10.64, v5.14.2, v5.10.63, v5.14.1, v5.10.62, v5.14, v5.10.61, v5.10.60, v5.10.53, v5.10.52, v5.10.51, v5.10.50, v5.10.49, v5.13, v5.10.46, v5.10.43, v5.10.42, v5.10.41, v5.10.40, v5.10.39, v5.4.119, v5.10.36, v5.10.35, v5.10.34, v5.4.116, v5.10.33, v5.12, v5.10.32, v5.10.31, v5.10.30, v5.10.27, v5.10.26, v5.10.25, v5.10.24, v5.10.23, v5.10.22, v5.10.21, v5.10.20, v5.10.19, v5.4.101, v5.10.18, v5.10.17, v5.11, v5.10.16, v5.10.15, v5.10.14 |
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7a3c90df |
| 14-Jan-2021 |
Viresh Kumar <viresh.kumar@linaro.org> |
arch: powerpc: Stop building and using oprofile
The "oprofile" user-space tools don't use the kernel OPROFILE support any more, and haven't in a long time. User-space has been converted to the perf
arch: powerpc: Stop building and using oprofile
The "oprofile" user-space tools don't use the kernel OPROFILE support any more, and haven't in a long time. User-space has been converted to the perf interfaces.
This commits stops building oprofile for powerpc and removes any reference to it from directories in arch/powerpc/ apart from arch/powerpc/oprofile, which will be removed in the next commit (this is broken into two commits as the size of the commit became very big, ~5k lines).
Note that the member "oprofile_cpu_type" in "struct cpu_spec" isn't removed as it was also used by other parts of the code.
Suggested-by: Christoph Hellwig <hch@infradead.org> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Robert Richter <rric@kernel.org> Acked-by: William Cohen <wcohen@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Thomas Gleixner <tglx@linutronix.de>
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Revision tags: v5.10, v5.8.17, v5.8.16, v5.8.15, v5.9, v5.8.14, v5.8.13, v5.8.12, v5.8.11, v5.8.10, v5.8.9, v5.8.8, v5.8.7, v5.8.6, v5.4.62, v5.8.5, v5.8.4, v5.4.61, v5.8.3, v5.4.60, v5.8.2, v5.4.59, v5.8.1, v5.4.58, v5.4.57, v5.4.56, v5.8, v5.7.12, v5.4.55, v5.7.11, v5.4.54, v5.7.10, v5.4.53, v5.4.52, v5.7.9, v5.7.8, v5.4.51, v5.4.50, v5.7.7, v5.4.49, v5.7.6, v5.7.5, v5.4.48, v5.7.4, v5.7.3, v5.4.47, v5.4.46, v5.7.2, v5.4.45, v5.7.1, v5.4.44, v5.7, v5.4.43, v5.4.42, v5.4.41, v5.4.40, v5.4.39, v5.4.38, v5.4.37, v5.4.36, v5.4.35, v5.4.34, v5.4.33, v5.4.32, v5.4.31, v5.4.30, v5.4.29, v5.6, v5.4.28, v5.4.27, v5.4.26, v5.4.25, v5.4.24, v5.4.23, v5.4.22, v5.4.21, v5.4.20, v5.4.19, v5.4.18, v5.4.17, v5.4.16, v5.5, v5.4.15, v5.4.14, v5.4.13, v5.4.12, v5.4.11, v5.4.10, v5.4.9, v5.4.8, v5.4.7, v5.4.6, v5.4.5, v5.4.4, v5.4.3, v5.3.15, v5.4.2, v5.4.1, v5.3.14, v5.4, v5.3.13, v5.3.12, v5.3.11, v5.3.10, v5.3.9, v5.3.8, v5.3.7, v5.3.6, v5.3.5, v5.3.4, v5.3.3, v5.3.2, v5.3.1, v5.3, v5.2.14, v5.3-rc8, v5.2.13, v5.2.12, v5.2.11, v5.2.10, v5.2.9, v5.2.8, v5.2.7, v5.2.6, v5.2.5, v5.2.4, v5.2.3, v5.2.2, v5.2.1, v5.2, v5.1.16, v5.1.15, v5.1.14, v5.1.13, v5.1.12, v5.1.11, v5.1.10, v5.1.9, v5.1.8, v5.1.7, v5.1.6, v5.1.5 |
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3cf5d076 |
| 23-May-2019 |
Eric W. Biederman <ebiederm@xmission.com> |
signal: Remove task parameter from force_sig
All of the remaining callers pass current into force_sig so remove the task parameter to make this obvious and to make misuse more difficult in the futur
signal: Remove task parameter from force_sig
All of the remaining callers pass current into force_sig so remove the task parameter to make this obvious and to make misuse more difficult in the future.
This also makes it clear force_sig passes current into force_sig_info.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Revision tags: v5.1.4, v5.1.3, v5.1.2, v5.1.1, v5.0.14, v5.1, v5.0.13, v5.0.12, v5.0.11, v5.0.10, v5.0.9, v5.0.8, v5.0.7, v5.0.6, v5.0.5, v5.0.4, v5.0.3, v4.19.29, v5.0.2, v4.19.28, v5.0.1, v4.19.27, v5.0, v4.19.26, v4.19.25, v4.19.24, v4.19.23, v4.19.22, v4.19.21, v4.19.20, v4.19.19, v4.19.18, v4.19.17, v4.19.16, v4.19.15, v4.19.14, v4.19.13, v4.19.12, v4.19.11, v4.19.10, v4.19.9, v4.19.8, v4.19.7, v4.19.6, v4.19.5, v4.19.4, v4.18.20, v4.19.3, v4.18.19, v4.19.2, v4.18.18, v4.18.17, v4.19.1, v4.19, v4.18.16, v4.18.15, v4.18.14, v4.18.13, v4.18.12, v4.18.11, v4.18.10, v4.18.9, v4.18.7, v4.18.6, v4.18.5, v4.17.18, v4.18.4, v4.18.3, v4.17.17, v4.18.2, v4.17.16, v4.17.15, v4.18.1, v4.18, v4.17.14, v4.17.13, v4.17.12, v4.17.11, v4.17.10, v4.17.9, v4.17.8, v4.17.7, v4.17.6, v4.17.5, v4.17.4, v4.17.3, v4.17.2, v4.17.1, v4.17, v4.16, v4.15, v4.13.16, v4.14 |
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b2441318 |
| 01-Nov-2017 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license identifiers to apply.
- when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary:
SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became the concluded license(s).
- when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time.
In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related.
Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Revision tags: v4.13.5, v4.13, v4.12, v4.10.17, v4.10.16, v4.10.15, v4.10.14, v4.10.13, v4.10.12, v4.10.11, v4.10.10, v4.10.9, v4.10.8, v4.10.7, v4.10.6, v4.10.5, v4.10.4, v4.10.3, v4.10.2, v4.10.1, v4.10, v4.9, openbmc-4.4-20161121-1, v4.4.33, v4.4.32, v4.4.31, v4.4.30, v4.4.29, v4.4.28, v4.4.27, v4.7.10, openbmc-4.4-20161021-1, v4.7.9, v4.4.26, v4.7.8, v4.4.25, v4.4.24, v4.7.7, v4.8, v4.4.23, v4.7.6, v4.7.5, v4.4.22, v4.4.21, v4.7.4, v4.7.3, v4.4.20, v4.7.2, v4.4.19, openbmc-4.4-20160819-1, v4.7.1, v4.4.18, v4.4.17, openbmc-4.4-20160804-1, v4.4.16, v4.7, openbmc-4.4-20160722-1, openbmc-20160722-1, openbmc-20160713-1, v4.4.15, v4.6.4, v4.6.3, v4.4.14, v4.6.2, v4.4.13, openbmc-20160606-1, v4.6.1, v4.4.12 |
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027dfac6 |
| 01-Jun-2016 |
Michael Ellerman <mpe@ellerman.id.au> |
powerpc: Various typo fixes
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Revision tags: openbmc-20160521-1, v4.4.11, openbmc-20160518-1, v4.6, v4.4.10, openbmc-20160511-1, openbmc-20160505-1, v4.4.9, v4.4.8, v4.4.7, openbmc-20160329-2, openbmc-20160329-1, openbmc-20160321-1, v4.4.6, v4.5, v4.4.5, v4.4.4, v4.4.3, openbmc-20160222-1, v4.4.2, openbmc-20160212-1, openbmc-20160210-1, openbmc-20160202-2, openbmc-20160202-1, v4.4.1, openbmc-20160127-1, openbmc-20160120-1, v4.4, openbmc-20151217-1, openbmc-20151210-1, openbmc-20151202-1, openbmc-20151123-1 |
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f43194e4 |
| 19-Nov-2015 |
Rashmica Gupta <rashmicy@gmail.com> |
powerpc: Standardise on NR_syscalls rather than __NR_syscalls.
Most architectures use NR_syscalls as the #define for the number of syscalls.
We use __NR_syscalls, and then define NR_syscalls as __N
powerpc: Standardise on NR_syscalls rather than __NR_syscalls.
Most architectures use NR_syscalls as the #define for the number of syscalls.
We use __NR_syscalls, and then define NR_syscalls as __NR_syscalls.
__NR_syscalls is not used outside arch code, whereas NR_syscalls is. So as NR_syscalls must be defined and __NR_syscalls does not, replace __NR_syscalls with NR_syscalls.
Signed-off-by: Rashmica Gupta <rashmicy@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Revision tags: openbmc-20151118-1, openbmc-20151104-1, v4.3, openbmc-20151102-1, openbmc-20151028-1, v4.3-rc1, v4.2, v4.2-rc8, v4.2-rc7, v4.2-rc6, v4.2-rc5, v4.2-rc4, v4.2-rc3, v4.2-rc2, v4.2-rc1, v4.1, v4.1-rc8, v4.1-rc7, v4.1-rc6, v4.1-rc5, v4.1-rc4, v4.1-rc3, v4.1-rc2, v4.1-rc1, v4.0, v4.0-rc7, v4.0-rc6, v4.0-rc5, v4.0-rc4, v4.0-rc3, v4.0-rc2, v4.0-rc1, v3.19, v3.19-rc7, v3.19-rc6, v3.19-rc5, v3.19-rc4, v3.19-rc3, v3.19-rc2, v3.19-rc1, v3.18, v3.18-rc7, v3.18-rc6, v3.18-rc5, v3.18-rc4, v3.18-rc3, v3.18-rc2, v3.18-rc1, v3.17, v3.17-rc7, v3.17-rc6, v3.17-rc5, v3.17-rc4, v3.17-rc3, v3.17-rc2, v3.17-rc1, v3.16, v3.16-rc7, v3.16-rc6, v3.16-rc5, v3.16-rc4, v3.16-rc3, v3.16-rc2, v3.16-rc1, v3.15, v3.15-rc8, v3.15-rc7, v3.15-rc6, v3.15-rc5, v3.15-rc4, v3.15-rc3, v3.15-rc2, v3.15-rc1, v3.14, v3.14-rc8, v3.14-rc7, v3.14-rc6, v3.14-rc5, v3.14-rc4, v3.14-rc3, v3.14-rc2, v3.14-rc1, v3.13, v3.13-rc8, v3.13-rc7, v3.13-rc6, v3.13-rc5, v3.13-rc4, v3.13-rc3, v3.13-rc2, v3.13-rc1, v3.12, v3.12-rc7, v3.12-rc6, v3.12-rc5, v3.12-rc4, v3.12-rc3, v3.12-rc2, v3.12-rc1, v3.11, v3.11-rc7, v3.11-rc6, v3.11-rc5, v3.11-rc4, v3.11-rc3, v3.11-rc2, v3.11-rc1, v3.10, v3.10-rc7, v3.10-rc6, v3.10-rc5, v3.10-rc4, v3.10-rc3, v3.10-rc2, v3.10-rc1, v3.9, v3.9-rc8, v3.9-rc7, v3.9-rc6, v3.9-rc5, v3.9-rc4, v3.9-rc3, v3.9-rc2, v3.9-rc1, v3.8, v3.8-rc7, v3.8-rc6, v3.8-rc5, v3.8-rc4, v3.8-rc3, v3.8-rc2, v3.8-rc1, v3.7, v3.7-rc8, v3.7-rc7, v3.7-rc6, v3.7-rc5, v3.7-rc4, v3.7-rc3, v3.7-rc2, v3.7-rc1, v3.6, v3.6-rc7, v3.6-rc6, v3.6-rc5, v3.6-rc4, v3.6-rc3, v3.6-rc2, v3.6-rc1, v3.5, v3.5-rc7, v3.5-rc6, v3.5-rc5, v3.5-rc4, v3.5-rc3, v3.5-rc2, v3.5-rc1, v3.4, v3.4-rc7, v3.4-rc6, v3.4-rc5, v3.4-rc4, v3.4-rc3, v3.4-rc2, v3.4-rc1, v3.3, v3.3-rc7, v3.3-rc6, v3.3-rc5, v3.3-rc4, v3.3-rc3, v3.3-rc2, v3.3-rc1, v3.2, v3.2-rc7, v3.2-rc6, v3.2-rc5, v3.2-rc4, v3.2-rc3, v3.2-rc2, v3.2-rc1, v3.1, v3.1-rc10, v3.1-rc9, v3.1-rc8, v3.1-rc7, v3.1-rc6, v3.1-rc5, v3.1-rc4, v3.1-rc3, v3.1-rc2, v3.1-rc1, v3.0, v3.0-rc7, v3.0-rc6, v3.0-rc5, v3.0-rc4, v3.0-rc3, v3.0-rc2, v3.0-rc1, v2.6.39, v2.6.39-rc7, v2.6.39-rc6, v2.6.39-rc5, v2.6.39-rc4, v2.6.39-rc3, v2.6.39-rc2, v2.6.39-rc1, v2.6.38, v2.6.38-rc8, v2.6.38-rc7, v2.6.38-rc6, v2.6.38-rc5, v2.6.38-rc4, v2.6.38-rc3, v2.6.38-rc2, v2.6.38-rc1, v2.6.37, v2.6.37-rc8, v2.6.37-rc7, v2.6.37-rc6, v2.6.37-rc5, v2.6.37-rc4, v2.6.37-rc3, v2.6.37-rc2, v2.6.37-rc1, v2.6.36, v2.6.36-rc8, v2.6.36-rc7, v2.6.36-rc6, v2.6.36-rc5, v2.6.36-rc4, v2.6.36-rc3, v2.6.36-rc2, v2.6.36-rc1, v2.6.35, v2.6.35-rc6, v2.6.35-rc5, v2.6.35-rc4, v2.6.35-rc3, v2.6.35-rc2, v2.6.35-rc1, v2.6.34, v2.6.34-rc7, v2.6.34-rc6, v2.6.34-rc5, v2.6.34-rc4, v2.6.34-rc3, v2.6.34-rc2, v2.6.34-rc1, v2.6.33, v2.6.33-rc8, v2.6.33-rc7, v2.6.33-rc6, v2.6.33-rc5, v2.6.33-rc4, v2.6.33-rc3, v2.6.33-rc2, v2.6.33-rc1, v2.6.32, v2.6.32-rc8, v2.6.32-rc7, v2.6.32-rc6, v2.6.32-rc5, v2.6.32-rc4, v2.6.32-rc3, v2.6.32-rc1, v2.6.32-rc2, v2.6.31, v2.6.31-rc9, v2.6.31-rc8, v2.6.31-rc7, v2.6.31-rc6, v2.6.31-rc5, v2.6.31-rc4, v2.6.31-rc3, v2.6.31-rc2, v2.6.31-rc1, v2.6.30, v2.6.30-rc8, v2.6.30-rc7, v2.6.30-rc6, v2.6.30-rc5, v2.6.30-rc4, v2.6.30-rc3, v2.6.30-rc2, v2.6.30-rc1, v2.6.29, v2.6.29-rc8, v2.6.29-rc7, v2.6.29-rc6 |
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3688b46b |
| 16-Feb-2009 |
Jeremy Kerr <jk@ozlabs.org> |
powerpc/spufs: Clear purge status before setting up isolated mode
Currently, we may setup the MFC for isolated mode initilaisation with the purge still active. This means that DMAs required to perfo
powerpc/spufs: Clear purge status before setting up isolated mode
Currently, we may setup the MFC for isolated mode initilaisation with the purge still active. This means that DMAs required to perform the init do not happen.
This change clears the purge status after doing the purge, so that the isolated init can proceed.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Revision tags: v2.6.29-rc5, v2.6.29-rc4, v2.6.29-rc3, v2.6.29-rc2, v2.6.29-rc1, v2.6.28, v2.6.28-rc9, v2.6.28-rc8, v2.6.28-rc7, v2.6.28-rc6, v2.6.28-rc5, v2.6.28-rc4, v2.6.28-rc3, v2.6.28-rc2, v2.6.28-rc1 |
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#
f5ed0eb6 |
| 15-Oct-2008 |
Jeremy Kerr <jk@ozlabs.org> |
powerpc/spufs: Use state_mutex for switch_log locking, and prevent multiple openers
Currently, we use ctx->mapping_lock and ctx->switch_log->lock for the context switch log. The mapping lock only pr
powerpc/spufs: Use state_mutex for switch_log locking, and prevent multiple openers
Currently, we use ctx->mapping_lock and ctx->switch_log->lock for the context switch log. The mapping lock only prevents concurrent open()s, so we require the switch_lock->lock for reads.
Since writes to the switch log buffer occur on context switches, we're better off synchronising with the state_mutex, which is held during a switch. Since we're serialised througout the buffer reads and writes, we can use the state mutex to protect open and release too, and can now kfree() the log buffer on release. This allows us to perform the switch log notify without taking any extra locks.
Because the buffer is only present while the file is open, we can use it to prevent multiple simultaneous openers.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Revision tags: v2.6.27, v2.6.27-rc9, v2.6.27-rc8, v2.6.27-rc7, v2.6.27-rc6, v2.6.27-rc5, v2.6.27-rc4, v2.6.27-rc3 |
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#
d9dd421f |
| 12-Aug-2008 |
Jeremy Kerr <jk@ozlabs.org> |
powerpc/spufs: fix npc setting for NOSCHED contexts
Currently, spu_run ignores the npc argument for contexts created with SPU_CREATE_NOSCHED. While this is correct for isolated contexts, there's no
powerpc/spufs: fix npc setting for NOSCHED contexts
Currently, spu_run ignores the npc argument for contexts created with SPU_CREATE_NOSCHED. While this is correct for isolated contexts, there's no need to enforce the npc restriction on non-isolated NOSCHED contexts.
This means that NOSCHED contexts can only ever run with an entry point of 0x0.
This change to spu_run_init allows setting of the npc (and, while we're at it, the privcntl) for non-isolated NOSCHED contexts. This allows us to run NOSCHED contexts from any entry point.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Revision tags: v2.6.27-rc2, v2.6.27-rc1, v2.6.26, v2.6.26-rc9, v2.6.26-rc8, v2.6.26-rc7, v2.6.26-rc6 |
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#
1f64643a |
| 05-Jun-2008 |
Luke Browning <lukebrowning@us.ibm.com> |
powerpc/spufs: remove class_0_dsisr from spu exception handling
According to the CBEA, the SPU dsisr is not updated for class 0 exceptions.
spu_stopped() is testing the dsisr that was passed to it
powerpc/spufs: remove class_0_dsisr from spu exception handling
According to the CBEA, the SPU dsisr is not updated for class 0 exceptions.
spu_stopped() is testing the dsisr that was passed to it from the class 0 exception handler, so we return a false positive here.
This patch cleans up the interrupt handler and erroneous tests in spu_stopped. It also removes the fields from the csa since it is not needed to process class 0 events.
Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Revision tags: v2.6.26-rc5 |
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#
d84050f4 |
| 29-May-2008 |
Luke Browning <lukebrowning@us.ibm.com> |
powerpc/spufs: wait for stable spu status in spu_stopped()
If the spu is stopping (ie, the SPU_STATUS_RUNNING bit is still set), re-read the register to get the final stopped value.
Signed-off-by:
powerpc/spufs: wait for stable spu status in spu_stopped()
If the spu is stopping (ie, the SPU_STATUS_RUNNING bit is still set), re-read the register to get the final stopped value.
Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Revision tags: v2.6.26-rc4, v2.6.26-rc3, v2.6.26-rc2, v2.6.26-rc1 |
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#
f3d69e05 |
| 27-Apr-2008 |
Luke Browning <lukebr@linux.vnet.ibm.com> |
[POWERPC] spufs: fix concurrent delivery of class 0 & 1 exceptions
SPU class 0 & 1 exceptions may occur in parallel, so we may end up overwriting csa.dsisr.
This change adds dedicated fields for ea
[POWERPC] spufs: fix concurrent delivery of class 0 & 1 exceptions
SPU class 0 & 1 exceptions may occur in parallel, so we may end up overwriting csa.dsisr.
This change adds dedicated fields for each class to the spu and the spu context so that fault data is not overwritten.
Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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#
d29694f0 |
| 23-Apr-2008 |
Jeremy Kerr <jk@ozlabs.org> |
[POWERPC] spufs: don't acquire state_mutex interruptible while performing callback
There's currently no way to tell if spu_process_callback has returned with the state mutex held, as -EINTR may be r
[POWERPC] spufs: don't acquire state_mutex interruptible while performing callback
There's currently no way to tell if spu_process_callback has returned with the state mutex held, as -EINTR may be returned by either the syscall or the spu_acquire fail case.
Instead, just do a non-interruptible mutex_lock here.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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#
c0bace5c |
| 22-Apr-2008 |
Jeremy Kerr <jk@ozlabs.org> |
[POWERPC] spufs: update master runcntl with context lock held
Currently, we update the SPU master run control bit (ie, spu_enable_spu) in spufs_run_spu before we grab the context mutex. This can res
[POWERPC] spufs: update master runcntl with context lock held
Currently, we update the SPU master run control bit (ie, spu_enable_spu) in spufs_run_spu before we grab the context mutex. This can result in races with other processes accessing this context's resources.
This change moves the spu_enable_spu to after we have acquired the context lock.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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#
5158e9b5 |
| 29-Apr-2008 |
Christoph Hellwig <hch@lst.de> |
[POWERPC] spufs: add context switch notification log
There are userspace instrumentation tools that need to monitor spu context switches. This patch adds a new file called 'switch_log' to each spufs
[POWERPC] spufs: add context switch notification log
There are userspace instrumentation tools that need to monitor spu context switches. This patch adds a new file called 'switch_log' to each spufs context directory that can be used to monitor the context switches.
Context switch in/out and exit from spu_run are monitored after the file was first opened and can be read from it.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Revision tags: v2.6.25, v2.6.25-rc9, v2.6.25-rc8 |
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#
e48b1b45 |
| 28-Mar-2008 |
Harvey Harrison <harvey.harrison@gmail.com> |
[POWERPC] Replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.cr
[POWERPC] Replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Revision tags: v2.6.25-rc7 |
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#
4eb5aef5 |
| 24-Mar-2008 |
Jeremy Kerr <jk@ozlabs.org> |
[POWERPC] spufs: reacquire LS pointer in spu_process_callback
During spu_process callback, we release then acquire the SPU, but keep a pointer to the local store memory. Since the context may have b
[POWERPC] spufs: reacquire LS pointer in spu_process_callback
During spu_process callback, we release then acquire the SPU, but keep a pointer to the local store memory. Since the context may have been scheduled out during the callback, the ls pointer may become invalid.
This change reacquires the pointer to the context local store after spu_acquire()-ing, so that it isn't invalidated by a context switch.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Revision tags: v2.6.25-rc6, v2.6.25-rc5, v2.6.25-rc4 |
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#
ce7c191b |
| 04-Mar-2008 |
Jeremy Kerr <jk@ozlabs.org> |
[POWERPC] spufs: don't (ab)use SCHED_IDLE
commit 4ef11014 introduced a usage of SCHED_IDLE to detect when a context is within spu_run.
Instead of SCHED_IDLE (which has other meaning), add a flag to
[POWERPC] spufs: don't (ab)use SCHED_IDLE
commit 4ef11014 introduced a usage of SCHED_IDLE to detect when a context is within spu_run.
Instead of SCHED_IDLE (which has other meaning), add a flag to sched_flags to tell if a context should be running.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Revision tags: v2.6.25-rc3 |
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#
4ef11014 |
| 18-Feb-2008 |
Jeremy Kerr <jk@ozlabs.org> |
[POWERPC] spufs: fix scheduler starvation by idle contexts
2.6.25 has a regression where we can starve the scheduler by creating (N_SPES+1) contexts, then running them one at a time.
The final cont
[POWERPC] spufs: fix scheduler starvation by idle contexts
2.6.25 has a regression where we can starve the scheduler by creating (N_SPES+1) contexts, then running them one at a time.
The final context will never be run, as the other contexts are loaded on the SPEs, none of which are repoted as free (ie, spu->alloc_state != SPU_FREE), so spu_get_idle() doesn't give us a spu to run on. Because all of the contexts are stopped, none are descheduled by the scheduler tick, as spusched_tick returns if spu_stopped(ctx).
This change replaces the spu_stopped() check with checking for SCHED_IDLE in ctx->policy. We set a context's policy to SCHED_IDLE when we're not in spu_run(). We also favour SCHED_IDLE contexts when looking for contexts to unbind, but leave their timeslice intact for later resumption.
This patch fixes the following test in the spufs-testsuite: tests/20-scheduler/02-yield-starvation
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Revision tags: v2.6.25-rc2, v2.6.25-rc1 |
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#
85687ff2 |
| 07-Feb-2008 |
Luke Browning <lukebr@linux.vnet.ibm.com> |
[POWERPC] spufs: Fix timing dependent false return from spufs_run_spu
Stop bits are only valid when the running bit is not set. Status bits carry over from one invocation of spufs_run_spu() to anot
[POWERPC] spufs: Fix timing dependent false return from spufs_run_spu
Stop bits are only valid when the running bit is not set. Status bits carry over from one invocation of spufs_run_spu() to another, so the RUNNING bit gets added to the previous state of the register which may have been a remote library call. In this case, it looks like another library routine should be invoked, but the spe is actually running.
This fixes a problem with a testcase that exercises the scheduler.
Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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#
e66686b4 |
| 07-Feb-2008 |
Luke Browning <lukebr@linux.vnet.ibm.com> |
[POWERPC] spufs: No need to have a runnable SPU for libassist update
We don't need to update the libassist statistic with the context in a runnable state, so do it after spu_disable_spu().
Signed-o
[POWERPC] spufs: No need to have a runnable SPU for libassist update
We don't need to update the libassist statistic with the context in a runnable state, so do it after spu_disable_spu().
Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
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#
eebead5b |
| 07-Feb-2008 |
Christoph Hellwig <hch@lst.de> |
[POWERPC] spufs: Fix state_mutex leaks
Fix various state_mutex leaks. The worst one was introduced by the interrutible state_mutex conversion but there've been a few before too. Notably spufs_wait
[POWERPC] spufs: Fix state_mutex leaks
Fix various state_mutex leaks. The worst one was introduced by the interrutible state_mutex conversion but there've been a few before too. Notably spufs_wait now returns without the state_mutex held when returning an error, which actually cleans up some code.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Revision tags: v2.6.24, v2.6.24-rc8 |
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#
60cf54db |
| 10-Jan-2008 |
Jeremy Kerr <jk@ozlabs.org> |
[POWERPC] spufs: Fix SPE single-step mode
Currently we only catch debug events through the 0x3fff status; spufs_run_spu doesn't handle single-step SPE events.
This change adds a handler for conditi
[POWERPC] spufs: Fix SPE single-step mode
Currently we only catch debug events through the 0x3fff status; spufs_run_spu doesn't handle single-step SPE events.
This change adds a handler for conditions where the SPE is stopped due to single-step-mode.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Revision tags: v2.6.24-rc7, v2.6.24-rc6 |
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#
c9101bdb |
| 20-Dec-2007 |
Christoph Hellwig <hch@lst.de> |
[POWERPC] spufs: make state_mutex interruptible
Make most places that use spu_acquire/spu_acquire_saved interruptible, this allows getting out of the spufs code when e.g. pressing ctrl+c. There are
[POWERPC] spufs: make state_mutex interruptible
Make most places that use spu_acquire/spu_acquire_saved interruptible, this allows getting out of the spufs code when e.g. pressing ctrl+c. There are a few places where we get called e.g. from spufs teardown routines were we can't simply err out so these are left with a comment. For now I've also not touched the poll routines because it's open what libspe would expect in terms of interrupted system calls.
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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#
e65c2f6f |
| 20-Dec-2007 |
Luke Browning <lukebr@linux.vnet.ibm.com> |
[POWERPC] spufs: decouple spu scheduler from spufs_spu_run (asynchronous scheduling)
Change spufs_spu_run so that the context is queued directly to the scheduler and the controlling thread advances
[POWERPC] spufs: decouple spu scheduler from spufs_spu_run (asynchronous scheduling)
Change spufs_spu_run so that the context is queued directly to the scheduler and the controlling thread advances directly to spufs_wait() for spe errors and exceptions.
nosched contexts are treated the same as before.
Fixes from Christoph Hellwig <hch@lst.de>
Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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#
91569531 |
| 20-Dec-2007 |
Luke Browning <lukebr@linux.vnet.ibm.com> |
[POWERPC] spufs: reorganize spu_run_init
This cleans up spu_run_init so that it does all of the spu initialization for spufs_run_spu. It initializes the spu context as much as possible before it ac
[POWERPC] spufs: reorganize spu_run_init
This cleans up spu_run_init so that it does all of the spu initialization for spufs_run_spu. It initializes the spu context as much as possible before it activates the spu and writes the runcntl register.
Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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