kernel/linux.git/tools/testing/selftests/ptp, branch v6.1.168

testptp: Add option to open PHC in readonly mode

2026-02-06T15:44:03+00:00

[ Upstream commit 76868642e42795353106197abf9c607ad80f4c9e ] PTP Hardware Clocks no longer require WRITE permission to perform readonly operations, such as listing device capabilities or listening to EXTTS events once they have been enabled by a process with WRITE permissions. Add '-r' option to testptp to open the PHC in readonly mode instead of the default read-write mode. Skip enabling EXTTS if readonly mode is requested. Acked-by: Richard Cochran Reviewed-by: Vadim Fedorenko Signed-off-by: Wojtek Wasko Signed-off-by: David S. Miller Signed-off-by: Sasha Levin

selftest/ptp: update ptp selftest to exercise the gettimex options

2026-02-06T15:44:03+00:00

[ Upstream commit 3d07b691ee707c00afaf365440975e81bb96cd9b ] With the inclusion of commit c259acab839e ("ptp/ioctl: support MONOTONIC{,_RAW} timestamps for PTP_SYS_OFFSET_EXTENDED") clock_gettime() now allows retrieval of pre/post timestamps for CLOCK_MONOTONIC and CLOCK_MONOTONIC_RAW timebases along with the previously supported CLOCK_REALTIME. This patch adds a command line option 'y' to the testptp program to choose one of the allowed timebases [realtime aka system, monotonic, and monotonic-raw). Signed-off-by: Mahesh Bandewar Cc: Shuah Khan Acked-by: Richard Cochran Link: https://patch.msgid.link/20241003101506.769418-1-maheshb@google.com Signed-off-by: Jakub Kicinski Stable-dep-of: 76868642e427 ("testptp: Add option to open PHC in readonly mode") Signed-off-by: Sasha Levin

ptp: add testptp mask test

2026-02-06T15:44:03+00:00

[ Upstream commit 26285e689c6cd2cf3849568c83b2ebe53f467143 ] Add option to test timestamp event queue mask manipulation in testptp. Option -F allows the user to specify a single channel that will be applied on the mask filter via IOCTL. The test program will maintain the file open until user input is received. This allows checking the effect of the IOCTL in debugfs. eg: Console 1: ``` Channel 12 exclusively enabled. Check on debugfs. Press any key to continue ``` Console 2: ``` 0x00000000 0x00000001 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 ``` Signed-off-by: Xabier Marquiegui Suggested-by: Richard Cochran Suggested-by: Vinicius Costa Gomes Signed-off-by: David S. Miller Stable-dep-of: 76868642e427 ("testptp: Add option to open PHC in readonly mode") Signed-off-by: Sasha Levin

selftests/ptp: Add -X option for testing PTP_SYS_OFFSET_PRECISE

2026-02-06T15:44:03+00:00

[ Upstream commit 3cf119ad5dc2b5c11385106d6d0ba86fbb47324c ] The -X option was chosen because X looks like a cross, and the underlying callback is 'get cross timestamp'. Signed-off-by: Alex Maftei Signed-off-by: David S. Miller Stable-dep-of: 76868642e427 ("testptp: Add option to open PHC in readonly mode") Signed-off-by: Sasha Levin

selftests/ptp: Add -x option for testing PTP_SYS_OFFSET_EXTENDED

2026-02-06T15:44:03+00:00

[ Upstream commit c8ba75c4eb846888f8f2730690b99cb5bf7b337c ] The -x option (where 'x' stands for eXtended) takes an argument which represents the number of samples to request from the PTP device. The help message will display the maximum number of samples allowed. Providing an invalid argument will also display the maximum number of samples allowed. Signed-off-by: Alex Maftei Signed-off-by: David S. Miller Stable-dep-of: 76868642e427 ("testptp: Add option to open PHC in readonly mode") Signed-off-by: Sasha Levin

testptp: Add support for testing ptp_clock_info .adjphase callback

2026-02-06T15:44:03+00:00

[ Upstream commit 3a9a9a6139286584d1199f555fa4f96f592a3217 ] Invoke clock_adjtime syscall with tx.modes set with ADJ_OFFSET when testptp is invoked with a phase adjustment offset value. Support seconds and nanoseconds for the offset value. Cc: Jakub Kicinski Cc: Shuah Khan Cc: Richard Cochran Cc: Maciek Machnikowski Signed-off-by: Rahul Rameshbabu Acked-by: Richard Cochran Signed-off-by: David S. Miller Stable-dep-of: 76868642e427 ("testptp: Add option to open PHC in readonly mode") Signed-off-by: Sasha Levin

selftests/ptp: Fix timestamp printf format for PTP_SYS_OFFSET

2023-06-21T14:01:02+00:00

[ Upstream commit 76a4c8b82938bc5020b67663db41f451684bf327 ] Previously, timestamps were printed using "%lld.%u" which is incorrect for nanosecond values lower than 100,000,000 as they're fractional digits, therefore leading zeros are meaningful. This patch changes the format strings to "%lld.%09u" in order to add leading zeros to the nanosecond value. Fixes: 568ebc5985f5 ("ptp: add the PTP_SYS_OFFSET ioctl to the testptp program") Fixes: 4ec54f95736f ("ptp: Fix compiler warnings in the testptp utility") Fixes: 6ab0e475f1f3 ("Documentation: fix misc. warnings") Signed-off-by: Alex Maftei Acked-by: Richard Cochran Link: https://lore.kernel.org/r/20230615083404.57112-1-alex.maftei@amd.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

selftests: ptp: Fix incorrect kernel headers search path

2023-03-10T08:34:17+00:00

commit 01ede99e9de16e7a1ed689c99f41022aa878f2f4 upstream. Use $(KHDR_INCLUDES) as lookup path for kernel headers. This prevents building against kernel headers from the build environment in scenarios where kernel headers are installed into a specific output directory (O=...). Signed-off-by: Mathieu Desnoyers Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.org Cc: Ingo Molnar Cc: # 5.18+ Signed-off-by: Shuah Khan Signed-off-by: Greg Kroah-Hartman

testptp: add option to shift clock by nanoseconds

2022-02-23T01:03:40+00:00

Add option to shift the clock by a specified number of nanoseconds. The new argument -n will specify the number of nanoseconds to add to the ptp clock. Since the API doesn't support negative shifts those needs to be calculated by subtracting full seconds and adding a nanosecond offset. Signed-off-by: Maciek Machnikowski Acked-by: Richard Cochran Link: https://lore.kernel.org/r/20220221200637.125595-1-maciek@machnikowski.net Signed-off-by: Jakub Kicinski

testptp: set pin function before other requests

2022-01-06T01:08:58+00:00

When the -L option of the testptp utility is specified with other options (e.g. -p to enable PPS output), the user probably wants to apply it to the pin configured by the -L option. Reorder the code to set the pin function before other function requests to avoid confusing users. Signed-off-by: Miroslav Lichvar Reviewed-by: Vladimir Oltean Acked-by: Richard Cochran Link: https://lore.kernel.org/r/20220105152506.3256026-1-mlichvar@redhat.com Signed-off-by: Jakub Kicinski