Patch series overview:

  1. Add New system call mq_recvmmsg(), mq_sendmmsg() and handler implementation.
  2. Add system call number in all most common architectures.
  3. Add entries in performance tools.
  4. Prepared Documentation and test.

  I am unware of some error code like ERESTARTSYS, it has special meaning and purpose
  I had just sent v4  couple of day ago but was not handling it correctly.
  
  now with lot of continous grind I corrected it and done some optimization


change since v4:

 - optimization is done regarding memory footprint for userspace caller
  by introducing two mode flag

 - error handling and error propogation is improved

 - documentation and test updated

 - v4 Link: https://lore.kernel.org/all/20260924153505.620772-1-mathura.kumar.tech@gmail.com/



mathura kumar (4):
  IPC: Added two new system call mq_recvmmsg() and  mq_sendmmsg()
  IPC: Added system call entry in all of most common  architectures
  IPC: Added system call entry in performance tool
  Test: Added self-testing and documentation

 Documentation/userspace-api/index.rst         |   2 +
 Documentation/userspace-api/mq_recvmmsg.rst   | 224 ++++++
 Documentation/userspace-api/mq_sendmmsg.rst   | 174 +++++
 arch/alpha/kernel/syscalls/syscall.tbl        |   2 +
 arch/arm/tools/syscall.tbl                    |   2 +
 arch/arm64/tools/syscall_32.tbl               |   3 +
 arch/m68k/kernel/syscalls/syscall.tbl         |   2 +
 arch/microblaze/kernel/syscalls/syscall.tbl   |   2 +
 arch/mips/kernel/syscalls/syscall_n32.tbl     |   2 +
 arch/mips/kernel/syscalls/syscall_n64.tbl     |   3 +
 arch/mips/kernel/syscalls/syscall_o32.tbl     |   2 +
 arch/parisc/kernel/syscalls/syscall.tbl       |   2 +
 arch/powerpc/kernel/syscalls/syscall.tbl      |   2 +
 arch/s390/kernel/syscalls/syscall.tbl         |   3 +
 arch/sh/kernel/syscalls/syscall.tbl           |   2 +
 arch/sparc/kernel/syscalls/syscall.tbl        |   3 +
 arch/x86/entry/syscalls/syscall_32.tbl        |   2 +
 arch/x86/entry/syscalls/syscall_64.tbl        |   3 +-
 arch/xtensa/kernel/syscalls/syscall.tbl       |   2 +
 include/linux/compat.h                        |  12 +-
 include/linux/syscalls.h                      |   9 +
 include/uapi/asm-generic/unistd.h             |   9 +-
 include/uapi/linux/mqueue.h                   |  27 +-
 ipc/mqueue.c                                  | 664 +++++++++++++++++-
 ipc/msg.c                                     |   2 +-
 ipc/msgutil.c                                 |  45 +-
 ipc/util.h                                    |   3 +-
 kernel/sys_ni.c                               |   6 +
 scripts/syscall.tbl                           |   2 +
 tools/include/uapi/asm-generic/unistd.h       |   8 +-
 .../arch/alpha/entry/syscalls/syscall.tbl     |   4 +
 .../perf/arch/arm/entry/syscalls/syscall.tbl  |   3 +
 .../arch/arm64/entry/syscalls/syscall_32.tbl  |   3 +
 .../arch/mips/entry/syscalls/syscall_n64.tbl  |   2 +
 .../arch/parisc/entry/syscalls/syscall.tbl    |   3 +
 .../arch/powerpc/entry/syscalls/syscall.tbl   |   3 +
 .../perf/arch/s390/entry/syscalls/syscall.tbl |   2 +
 tools/perf/arch/sh/entry/syscalls/syscall.tbl |   2 +
 .../arch/sparc/entry/syscalls/syscall.tbl     |   2 +
 .../arch/x86/entry/syscalls/syscall_32.tbl    |   2 +
 .../arch/x86/entry/syscalls/syscall_64.tbl    |   2 +
 .../arch/xtensa/entry/syscalls/syscall.tbl    |   2 +
 tools/scripts/syscall.tbl                     |   2 +
 tools/testing/selftests/ipc/Makefile          |   2 +-
 tools/testing/selftests/ipc/mq_recvmmsg.c     | 393 +++++++++++
 tools/testing/selftests/ipc/mq_sendmmsg.c     | 360 ++++++++++
 46 files changed, 1945 insertions(+), 66 deletions(-)
 create mode 100644 Documentation/userspace-api/mq_recvmmsg.rst
 create mode 100644 Documentation/userspace-api/mq_sendmmsg.rst
 create mode 100644 tools/testing/selftests/ipc/mq_recvmmsg.c
 create mode 100644 tools/testing/selftests/ipc/mq_sendmmsg.c

-- 
2.43.0