| Message ID | 20240827062438.71809-1-jwyatt@redhat.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Add SWIG Bindings to libcpupower | expand |
On 8/27/24 00:24, John B. Wyatt IV wrote: > SWIG is a tool packaged in Fedora and other distros that can generate > bindings from C and C++ code for several languages including Python, > Perl, and Go. Providing bindings for scripting languages is a common feature > to make use of libraries more accessible to more users and programs. My team > specifically wants to expand the features of rteval. rteval is a Python program > used to measure real time performance. We wanted to test the effect of enabling > some levels of idle-stat to see how it affects latency, and didn't want to > reinvent the wheel. Since SWIG requires the .o files created by libcpupower at > compilation it makes sense to include this in the cpupower directory so that > others can make use of them. > > The V2 of this patchset includes: > * the full definition of libcpupower headers that is needed for the bindings > * dummy implementation in C of a function listed in the header of libcpupower > (requested by Shuah Khan) > * test_raw_pylibcpupower.py demonstrates an example of using the bindings > * adding myself and John Kacur to the cpupower section of the maintainers file > (requested by Shuah Khan) > * addressed review comments about doc, makefile, and maintainers file > * small style and other fixes > > The name raw_pylibcpupower is used because a wrapper `pylibcpupower` may be > needed to make the bindings more 'pythonic' in the future. The bindings folder > is used because Go or Perl bindings may be useful for other users in the > future. > > Note that while SWIG itself is GPL v3+ licensed; the resulting output, the > bindings code, has the same license as the .o files used to generate the > bindings (GPL v2 only). Please see > https://swig.org/legal.html > and > https://lore.kernel.org/linux-pm/Zqv9BOjxLAgyNP5B@hatbackup/#t > for more details on the license. > > Sincerely, > John Wyatt > Software Engineer, Core Kernel > Red Hat > > John B. Wyatt IV (4): > Add SWIG bindings files for libcpupower > Implement dummy function for SWIG to accept the full library > definitions > Include test_raw_pylibcpupower.py > MAINTAINERS: Add Maintainers for SWIG Python bindings > > MAINTAINERS | 3 + > .../power/cpupower/bindings/python/.gitignore | 8 + > tools/power/cpupower/bindings/python/Makefile | 31 +++ > tools/power/cpupower/bindings/python/README | 59 +++++ > .../bindings/python/raw_pylibcpupower.i | 247 ++++++++++++++++++ > .../bindings/python/test_raw_pylibcpupower.py | 42 +++ > tools/power/cpupower/lib/powercap.c | 8 + > 7 files changed, 398 insertions(+) > create mode 100644 tools/power/cpupower/bindings/python/.gitignore > create mode 100644 tools/power/cpupower/bindings/python/Makefile > create mode 100644 tools/power/cpupower/bindings/python/README > create mode 100644 tools/power/cpupower/bindings/python/raw_pylibcpupower.i > create mode 100755 tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py > Couple of things to address: 1. I noticed none of the patches have the subsystem prefix: pm:cpupower is the right prefix for patch subject for all the patches except the MAINTAINERS file I will pull the fix "Implement dummy function for SWIG to accept the full library" Patch 2 in your series. I want this subject changed to just fix as it is a problem irrespective of SWIG - we have a missing function. Subject would be as follows: ""pm:cpupower: Add missing powercap_set_enabled() stub function" Make this the first patch in the series. I will send this up for Linux 6.11-rc7 or Linux 6.12-rc1 Depending on how the timelines for merge window work, expect the series to land in Linux 6.13-rc1. I would prefer to delay it anyway so we can get some soaking in next. thanks, -- Shuah
On 9/4/24 06:41, Shuah Khan wrote: > On 8/27/24 00:24, John B. Wyatt IV wrote: >> SWIG is a tool packaged in Fedora and other distros that can generate >> bindings from C and C++ code for several languages including Python, >> Perl, and Go. Providing bindings for scripting languages is a common feature >> to make use of libraries more accessible to more users and programs. My team >> specifically wants to expand the features of rteval. rteval is a Python program >> used to measure real time performance. We wanted to test the effect of enabling >> some levels of idle-stat to see how it affects latency, and didn't want to >> reinvent the wheel. Since SWIG requires the .o files created by libcpupower at >> compilation it makes sense to include this in the cpupower directory so that >> others can make use of them. >> >> The V2 of this patchset includes: >> * the full definition of libcpupower headers that is needed for the bindings >> * dummy implementation in C of a function listed in the header of libcpupower >> (requested by Shuah Khan) >> * test_raw_pylibcpupower.py demonstrates an example of using the bindings >> * adding myself and John Kacur to the cpupower section of the maintainers file >> (requested by Shuah Khan) >> * addressed review comments about doc, makefile, and maintainers file >> * small style and other fixes >> >> The name raw_pylibcpupower is used because a wrapper `pylibcpupower` may be >> needed to make the bindings more 'pythonic' in the future. The bindings folder >> is used because Go or Perl bindings may be useful for other users in the >> future. >> >> Note that while SWIG itself is GPL v3+ licensed; the resulting output, the >> bindings code, has the same license as the .o files used to generate the >> bindings (GPL v2 only). Please see >> https://swig.org/legal.html >> and >> https://lore.kernel.org/linux-pm/Zqv9BOjxLAgyNP5B@hatbackup/#t >> for more details on the license. >> >> Sincerely, >> John Wyatt >> Software Engineer, Core Kernel >> Red Hat >> >> John B. Wyatt IV (4): >> Add SWIG bindings files for libcpupower >> Implement dummy function for SWIG to accept the full library >> definitions >> Include test_raw_pylibcpupower.py >> MAINTAINERS: Add Maintainers for SWIG Python bindings >> >> MAINTAINERS | 3 + >> .../power/cpupower/bindings/python/.gitignore | 8 + >> tools/power/cpupower/bindings/python/Makefile | 31 +++ >> tools/power/cpupower/bindings/python/README | 59 +++++ >> .../bindings/python/raw_pylibcpupower.i | 247 ++++++++++++++++++ >> .../bindings/python/test_raw_pylibcpupower.py | 42 +++ >> tools/power/cpupower/lib/powercap.c | 8 + >> 7 files changed, 398 insertions(+) >> create mode 100644 tools/power/cpupower/bindings/python/.gitignore >> create mode 100644 tools/power/cpupower/bindings/python/Makefile >> create mode 100644 tools/power/cpupower/bindings/python/README >> create mode 100644 tools/power/cpupower/bindings/python/raw_pylibcpupower.i >> create mode 100755 tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py >> > Noticed Rafael isn't on this thread. Adding now to keep him in the loop. cpupower pull request go through Rafael's tree. > Couple of things to address: > > 1. I noticed none of the patches have the subsystem prefix: > pm:cpupower is the right prefix for patch subject for all > the patches except the MAINTAINERS file > > I will pull the fix "Implement dummy function for SWIG to accept > the full library" Patch 2 in your series. > > I want this subject changed to just fix as it is a problem irrespective > of SWIG - we have a missing function. Subject would be as follows: > > ""pm:cpupower: Add missing powercap_set_enabled() stub function" > > Make this the first patch in the series. I will send this up for > Linux 6.11-rc7 or Linux 6.12-rc1 > > Depending on how the timelines for merge window work, expect the > series to land in Linux 6.13-rc1. I would prefer to delay it anyway > so we can get some soaking in next. > thanks, -- Shuah
On Wed, Sep 04, 2024 at 06:41:14AM -0600, Shuah Khan wrote: > On 8/27/24 00:24, John B. Wyatt IV wrote: >> [snipped] > > Couple of things to address: > > 1. I noticed none of the patches have the subsystem prefix: > pm:cpupower is the right prefix for patch subject for all > the patches except the MAINTAINERS file > > I will pull the fix "Implement dummy function for SWIG to accept > the full library" Patch 2 in your series. > > I want this subject changed to just fix as it is a problem irrespective > of SWIG - we have a missing function. Subject would be as follows: > > ""pm:cpupower: Add missing powercap_set_enabled() stub function" > > Make this the first patch in the series. I will send this up for > Linux 6.11-rc7 or Linux 6.12-rc1 Understood. > Depending on how the timelines for merge window work, expect the > series to land in Linux 6.13-rc1. I would prefer to delay it anyway > so we can get some soaking in next. Thank you, I appreciate it. What kind of soaking are you looking for? Is there anything I can do to help?
On 9/4/24 08:13, John B. Wyatt IV wrote: > On Wed, Sep 04, 2024 at 06:41:14AM -0600, Shuah Khan wrote: >> On 8/27/24 00:24, John B. Wyatt IV wrote: >>> [snipped] >> >> Couple of things to address: >> >> 1. I noticed none of the patches have the subsystem prefix: >> pm:cpupower is the right prefix for patch subject for all >> the patches except the MAINTAINERS file >> >> I will pull the fix "Implement dummy function for SWIG to accept >> the full library" Patch 2 in your series. >> >> I want this subject changed to just fix as it is a problem irrespective >> of SWIG - we have a missing function. Subject would be as follows: >> >> ""pm:cpupower: Add missing powercap_set_enabled() stub function" >> >> Make this the first patch in the series. I will send this up for >> Linux 6.11-rc7 or Linux 6.12-rc1 > > Understood. > >> Depending on how the timelines for merge window work, expect the >> series to land in Linux 6.13-rc1. I would prefer to delay it anyway >> so we can get some soaking in next. > > Thank you, I appreciate it. > > What kind of soaking are you looking for? Is there anything I can do to > help? > It is more the timing than anything you can do. We are at rc6. Please do send the series with the changes I requested. thanks, -- Shuah
SWIG is a tool packaged in Fedora and other distros that can generate bindings from C and C++ code for several languages including Python, Perl, and Go. Providing bindings for scripting languages is a common feature to make use of libraries more accessible to more users and programs. My team specifically wants to expand the features of rteval. rteval is a Python program used to measure real time performance. We wanted to test the effect of enabling some levels of idle-stat to see how it affects latency, and didn't want to reinvent the wheel. Since SWIG requires the .o files created by libcpupower at compilation it makes sense to include this in the cpupower directory so that others can make use of them. The V2 of this patchset includes: * the full definition of libcpupower headers that is needed for the bindings * dummy implementation in C of a function listed in the header of libcpupower (requested by Shuah Khan) * test_raw_pylibcpupower.py demonstrates an example of using the bindings * adding myself and John Kacur to the cpupower section of the maintainers file (requested by Shuah Khan) * addressed review comments about doc, makefile, and maintainers file * small style and other fixes The name raw_pylibcpupower is used because a wrapper `pylibcpupower` may be needed to make the bindings more 'pythonic' in the future. The bindings folder is used because Go or Perl bindings may be useful for other users in the future. Note that while SWIG itself is GPL v3+ licensed; the resulting output, the bindings code, has the same license as the .o files used to generate the bindings (GPL v2 only). Please see https://swig.org/legal.html and https://lore.kernel.org/linux-pm/Zqv9BOjxLAgyNP5B@hatbackup/#t for more details on the license. Sincerely, John Wyatt Software Engineer, Core Kernel Red Hat John B. Wyatt IV (4): Add SWIG bindings files for libcpupower Implement dummy function for SWIG to accept the full library definitions Include test_raw_pylibcpupower.py MAINTAINERS: Add Maintainers for SWIG Python bindings MAINTAINERS | 3 + .../power/cpupower/bindings/python/.gitignore | 8 + tools/power/cpupower/bindings/python/Makefile | 31 +++ tools/power/cpupower/bindings/python/README | 59 +++++ .../bindings/python/raw_pylibcpupower.i | 247 ++++++++++++++++++ .../bindings/python/test_raw_pylibcpupower.py | 42 +++ tools/power/cpupower/lib/powercap.c | 8 + 7 files changed, 398 insertions(+) create mode 100644 tools/power/cpupower/bindings/python/.gitignore create mode 100644 tools/power/cpupower/bindings/python/Makefile create mode 100644 tools/power/cpupower/bindings/python/README create mode 100644 tools/power/cpupower/bindings/python/raw_pylibcpupower.i create mode 100755 tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py