linux-next: manual merge of the pidfd tree with the y2038 tree

From: Stephen Rothwell
Date: Mon Jan 21 2019 - 22:10:35 EST


Hi all,

Today's linux-next merge of the pidfd tree got conflicts in:

arch/x86/entry/syscalls/syscall_32.tbl
arch/x86/entry/syscalls/syscall_64.tbl
include/uapi/asm-generic/unistd.h

between commits:

63a96220ad45 ("arch: add split IPC system calls where needed")
0bd4bb9c5612 ("y2038: add 64-bit time_t syscalls to all 32-bit architectures")

from the y2038 tree and commit:

3d2991bc7a67 ("signal: add pidfd_send_signal() syscall")

from the pidfd tree.

I fixed it up (I hope this resolution is better - see below) and can
carry the fix as necessary. This is now fixed as far as linux-next is
concerned, but any non trivial conflicts should be mentioned to your
upstream maintainer when your tree is submitted for merging. You may
also want to consider cooperating with the maintainer of the
conflicting tree to minimise any particularly complex conflicts.

--
Cheers,
Stephen Rothwell

diff --cc arch/x86/entry/syscalls/syscall_32.tbl
index 955ab6a3b61f,6804c1e84b36..000000000000
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@@ -396,36 -396,6 +396,37 @@@
382 i386 pkey_free sys_pkey_free __ia32_sys_pkey_free
383 i386 statx sys_statx __ia32_sys_statx
384 i386 arch_prctl sys_arch_prctl __ia32_compat_sys_arch_prctl
-385 i386 io_pgetevents sys_io_pgetevents __ia32_compat_sys_io_pgetevents
+385 i386 io_pgetevents sys_io_pgetevents_time32 __ia32_compat_sys_io_pgetevents
386 i386 rseq sys_rseq __ia32_sys_rseq
-387 i386 pidfd_send_signal sys_pidfd_send_signal __ia32_sys_pidfd_send_signal
+# don't use numbers 387 through 392, add new calls at the end
+393 i386 semget sys_semget __ia32_sys_semget
+394 i386 semctl sys_semctl __ia32_compat_sys_semctl
+395 i386 shmget sys_shmget __ia32_sys_shmget
+396 i386 shmctl sys_shmctl __ia32_compat_sys_shmctl
+397 i386 shmat sys_shmat __ia32_compat_sys_shmat
+398 i386 shmdt sys_shmdt __ia32_sys_shmdt
+399 i386 msgget sys_msgget __ia32_sys_msgget
+400 i386 msgsnd sys_msgsnd __ia32_compat_sys_msgsnd
+401 i386 msgrcv sys_msgrcv __ia32_compat_sys_msgrcv
+402 i386 msgctl sys_msgctl __ia32_compat_sys_msgctl
+403 i386 clock_gettime64 sys_clock_gettime __ia32_sys_clock_gettime
+404 i386 clock_settime64 sys_clock_settime __ia32_sys_clock_settime
+405 i386 clock_adjtime64 sys_clock_adjtime __ia32_sys_clock_adjtime
+406 i386 clock_getres_time64 sys_clock_getres __ia32_sys_clock_getres
+407 i386 clock_nanosleep_time64 sys_clock_nanosleep __ia32_sys_clock_nanosleep
+408 i386 timer_gettime64 sys_timer_gettime __ia32_sys_timer_gettime
+409 i386 timer_settime64 sys_timer_settime __ia32_sys_timer_settime
+410 i386 timerfd_gettime64 sys_timerfd_gettime __ia32_sys_timerfd_gettime
+411 i386 timerfd_settime64 sys_timerfd_settime __ia32_sys_timerfd_settime
+412 i386 utimensat_time64 sys_utimensat __ia32_sys_utimensat
+413 i386 pselect6_time64 sys_pselect6 __ia32_compat_sys_pselect6_time64
+414 i386 ppoll_time64 sys_ppoll __ia32_compat_sys_ppoll_time64
+416 i386 io_pgetevents_time64 sys_io_pgetevents __ia32_sys_io_pgetevents
+417 i386 recvmmsg_time64 sys_recvmmsg __ia32_compat_sys_recvmmsg_time64
+418 i386 mq_timedsend_time64 sys_mq_timedsend __ia32_sys_mq_timedsend
+419 i386 mq_timedreceive_time64 sys_mq_timedreceive __ia32_sys_mq_timedreceive
+420 i386 semtimedop_time64 sys_semtimedop __ia32_sys_semtimedop
+421 i386 rt_sigtimedwait_time64 sys_rt_sigtimedwait __ia32_compat_sys_rt_sigtimedwait_time64
+422 i386 futex_time64 sys_futex __ia32_sys_futex
+423 i386 sched_rr_get_interval_time64 sys_sched_rr_get_interval __ia32_sys_sched_rr_get_interval
++424 i386 pidfd_send_signal sys_pidfd_send_signal __ia32_sys_pidfd_send_signal
diff --cc arch/x86/entry/syscalls/syscall_64.tbl
index 2ae92fddb6d5,aa4b858fa0f1..000000000000
--- a/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/arch/x86/entry/syscalls/syscall_64.tbl
@@@ -343,8 -343,7 +343,9 @@@
332 common statx __x64_sys_statx
333 common io_pgetevents __x64_sys_io_pgetevents
334 common rseq __x64_sys_rseq
-335 common pidfd_send_signal __x64_sys_pidfd_send_signal
+# don't use numbers 387 through 423, add new calls after the last
+# 'common' entry
++424 common pidfd_send_signal __x64_sys_pidfd_send_signal

#
# x32-specific system call numbers start at 512 to avoid cache impact
diff --cc include/uapi/asm-generic/unistd.h
index acf9a07ab2ff,b77538af7aca..000000000000
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@@ -740,52 -740,11 +740,54 @@@ __SC_COMP_3264(__NR_io_pgetevents, sys_
__SYSCALL(__NR_rseq, sys_rseq)
#define __NR_kexec_file_load 294
__SYSCALL(__NR_kexec_file_load, sys_kexec_file_load)
-#define __NR_pidfd_send_signal 295
+/* 295 through 402 are unassigned to sync up with generic numbers, don't use */
+#if __BITS_PER_LONG == 32
+#define __NR_clock_gettime64 403
+__SYSCALL(__NR_clock_gettime64, sys_clock_gettime)
+#define __NR_clock_settime64 404
+__SYSCALL(__NR_clock_settime64, sys_clock_settime)
+#define __NR_clock_adjtime64 405
+__SYSCALL(__NR_clock_adjtime64, sys_clock_adjtime)
+#define __NR_clock_getres_time64 406
+__SYSCALL(__NR_clock_getres_time64, sys_clock_getres)
+#define __NR_clock_nanosleep_time64 407
+__SYSCALL(__NR_clock_nanosleep_time64, sys_clock_nanosleep)
+#define __NR_timer_gettime64 408
+__SYSCALL(__NR_timer_gettime64, sys_timer_gettime)
+#define __NR_timer_settime64 409
+__SYSCALL(__NR_timer_settime64, sys_timer_settime)
+#define __NR_timerfd_gettime64 410
+__SYSCALL(__NR_timerfd_gettime64, sys_timerfd_gettime)
+#define __NR_timerfd_settime64 411
+__SYSCALL(__NR_timerfd_settime64, sys_timerfd_settime)
+#define __NR_utimensat_time64 412
+__SYSCALL(__NR_utimensat_time64, sys_utimensat)
+#define __NR_pselect6_time64 413
+__SC_COMP(__NR_pselect6_time64, sys_pselect6, compat_sys_pselect6_time64)
+#define __NR_ppoll_time64 414
+__SC_COMP(__NR_ppoll_time64, sys_ppoll, compat_sys_ppoll_time64)
+#define __NR_io_pgetevents_time64 416
+__SYSCALL(__NR_io_pgetevents_time64, sys_io_pgetevents)
+#define __NR_recvmmsg_time64 417
+__SC_COMP(__NR_recvmmsg_time64, sys_recvmmsg, compat_sys_recvmmsg_time64)
+#define __NR_mq_timedsend_time64 418
+__SYSCALL(__NR_mq_timedsend_time64, sys_mq_timedsend)
+#define __NR_mq_timedreceive_time64 419
+__SYSCALL(__NR_mq_timedreceive_time64, sys_mq_timedreceive)
+#define __NR_semtimedop_time64 420
+__SYSCALL(__NR_semtimedop_time64, sys_semtimedop)
+#define __NR_rt_sigtimedwait_time64 421
+__SC_COMP(__NR_rt_sigtimedwait_time64, sys_rt_sigtimedwait, compat_sys_rt_sigtimedwait_time64)
+#define __NR_futex_time64 422
+__SYSCALL(__NR_futex_time64, sys_futex)
+#define __NR_sched_rr_get_interval_time64 423
+__SYSCALL(__NR_sched_rr_get_interval_time64, sys_sched_rr_get_interval)
+#endif
++#define __NR_pidfd_send_signal 424
+ __SYSCALL(__NR_pidfd_send_signal, sys_pidfd_send_signal)

#undef __NR_syscalls
- #define __NR_syscalls 424
-#define __NR_syscalls 296
++#define __NR_syscalls 425

/*
* 32 bit systems traditionally used different

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