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2016-03-17Merge tag 'docs-for-linus' of git://git.lwn.net/linuxLinus Torvalds1-1/+2
Pul documentation update from Jon Corbet: "Another relatively boring cycle for the docs tree: typo fixes, translation updates, etc" * tag 'docs-for-linus' of git://git.lwn.net/linux: modsign: Fix documentation on module signing enforcement parameter. Doc: nfs: Fix typos in Documentation/filesystems/nfs Documentation: kselftest: Remove duplicate word doc: fix grammar Documentation: Howto: Fixed subtitles style Doc: ARM: Fix a typo in clksrc-change-registers.awk Documentation/ko_KR: update maintainer information Documentation: Fix int/unsigned int comparison Documentation: Chinese translation of arm64/silicon-errata.txt Documentation:Update Documentation/zh_CN/arm64/booting.txt Documentation: HOWTO: remove obsolete info about regression postings Doc: ja_JP: Fix a typo in HOWTO Doc: i2c: Fix typo in Documentation/i2c Doc: DocBook: Fix a typo in device-drivers.tmpl Remove "arch" usage in Documentation/features/list-arch.sh README: cosmetic fixes Documentation/CodingStyle: add space before parenthesis in example macro SubmittingPatches: fix spelling of "git send-email"
2016-03-03ptp: Add PTP_SYS_OFFSET_PRECISE for driver crosstimestampingChristopher S. Hall1-2/+4
Currently, network /system cross-timestamping is performed in the PTP_SYS_OFFSET ioctl. The PTP clock driver reads gettimeofday() and the gettime64() callback provided by the driver. The cross-timestamp is best effort where the latency between the capture of system time (getnstimeofday()) and the device time (driver callback) may be significant. The getcrosststamp() callback and corresponding PTP_SYS_OFFSET_PRECISE ioctl allows the driver to perform this device/system correlation when for example cross timestamp hardware is available. Modern Intel systems can do this for onboard Ethernet controllers using the ART counter. There is virtually zero latency between captures of the ART and network device clock. The capabilities ioctl (PTP_CLOCK_GETCAPS), is augmented allowing applications to query whether or not drivers implement the getcrosststamp callback, providing more precise cross timestamping. Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: kevin.b.stanton@intel.com Cc: kevin.j.clarke@intel.com Cc: hpa@zytor.com Cc: jeffrey.t.kirsher@intel.com Cc: netdev@vger.kernel.org Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Christopher S. Hall <christopher.s.hall@intel.com> [jstultz: Commit subject tweaks] Signed-off-by: John Stultz <john.stultz@linaro.org>
2016-02-17Documentation: Fix int/unsigned int comparisonMahesh Khanwalkar1-1/+2
Signed int - unsigned int comparison fixed in mpssd, prctl, ptp, and timers in Documentation. In places where 'int argc' and 'const char **argv' are not used, they are replaced with void Documentation/mic/mpssd/mpssd.c: Fixed comparison in sum_iovec_len and disp_iovec Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c: main signature changed to void, as parameters 'argc' and 'argv' are never used Documentation/prctl/disable-tsc-on-off-stress-test.c: main signature changed to void Documentation/prctl/disable-tsc-test.c: main signature changed to void Documentation/ptp/testptp.c: Sign comparison fix Documentation/timers/hpet_example.c: Sign comparision fix Signed-off-by: Mahesh Khanwalkar <maheshkhanwalkar@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2015-09-29testptp: Silence compiler warnings on ppc64Thomas Huth1-0/+1
When compiling Documentation/ptp/testptp.c the following compiler warnings are printed out: Documentation/ptp/testptp.c: In function ‘main’: Documentation/ptp/testptp.c:367:11: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘__s64’ [-Wformat=] event.t.sec, event.t.nsec); ^ Documentation/ptp/testptp.c:505:5: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘__s64’ [-Wformat=] (pct+2*i)->sec, (pct+2*i)->nsec); ^ Documentation/ptp/testptp.c:507:5: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘__s64’ [-Wformat=] (pct+2*i+1)->sec, (pct+2*i+1)->nsec); ^ Documentation/ptp/testptp.c:509:5: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘__s64’ [-Wformat=] (pct+2*i+2)->sec, (pct+2*i+2)->nsec); This happens because __s64 is by default defined as "long" on ppc64, not as "long long". However, to fix these warnings, it's possible to define the __SANE_USERSPACE_TYPES__ so that __s64 gets defined to "long long" on ppc64, too. Signed-off-by: Thomas Huth <thuth@redhat.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-24ptp: restore the makefile for building the test program.Richard Cochran1-0/+33
This patch brings back the makefile called testptp.mk which was removed in commit adb19fb66eee (Documentation: add makefiles for more targets). While the idea of that commit was to improve build coverage of the examples, the new Makefile is unable to cross compile the testptp program. In contrast, the deleted makefile was able to do this just fine. This patch fixes the regression by restoring the original makefile. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Acked-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-26Documentation: update .gitignore filesPeter Foley1-0/+1
Add some missing files to .gitignore. Push Documentation/.gitignore down into subdirectories. Signed-off-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26Documentation: fix misc. warningsPeter Foley1-3/+3
Fix a few warnings that gcc emits during a default build. Signed-off-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26Documentation: add makefiles for more targetsPeter Foley2-33/+8
Add a bunch of previously unbuilt source files to the Documentation build machinery. Signed-off-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-06-16ptp: In the testptp utility, use clock_adjtime from glibc when availableChristian Riesch1-1/+4
clock_adjtime was included in glibc 2.14. _GNU_SOURCE must be defined to make it available. Signed-off-by: Christian Riesch <christian.riesch@omicron.at> Cc: Richard Cochran <richardcochran@gmail.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-27ptp: Fix compiler warnings in the testptp utilityChristian Riesch1-5/+6
Signed-off-by: Christian Riesch <christian.riesch@omicron.at> Cc: Dong Zhu <bluezhudong@gmail.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-27Revert "ptp: Fix compiler warnings in the testptp utility"David S. Miller1-5/+5
This reverts commit 203191c386e83b8c5d95bbbaef13baa629512726. A better version of this fix is forthcoming. Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-26ptp: Fix compiler warnings in the testptp utilityChristian Riesch1-5/+5
Signed-off-by: Christian Riesch <christian.riesch@omicron.at> Cc: Dong Zhu <bluezhudong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-26ptp: Add a command line option in testptp to set a specific PTP timeManfred Rudigier1-2/+18
Signed-off-by: Manfred Rudigier <manfred.rudigier@omicron.at> Signed-off-by: Christian Riesch <christian.riesch@omicron.at> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-21ptp: add the pin GET/SETFUNC ioctls to the testptp program.Richard Cochran1-3/+55
This patch adds a option to the test program that lists the programmable pins on a PTP Hardware Clock device, assuming there are any such pins. A second option lets the user reprogram the auxiliary function of a single pin. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-04ptp: Allow selecting trigger/event index in testptpStefan Sørensen1-3/+8
Currently the trigger/event is hardcoded to 0, this patch adds a new command line argument -i to select an arbitrary trigger/ event. Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-23ptp: add the PTP_SYS_OFFSET ioctl to the testptp programDong Zhu1-2/+63
This patch add a method into testptp.c to measure the time offset between phc and system clock through the ioctl PTP_SYS_OFFSET. Signed-off-by: Dong Zhu <bluezhudong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23ptp: Added a brand new class driver for ptp clocks.Richard Cochran3-0/+503
This patch adds an infrastructure for hardware clocks that implement IEEE 1588, the Precision Time Protocol (PTP). A class driver offers a registration method to particular hardware clock drivers. Each clock is presented as a standard POSIX clock. The ancillary clock features are exposed in two different ways, via the sysfs and by a character device. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John Stultz <john.stultz@linaro.org>
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