linux/tools/include/uapi/asm-generic
Arnaldo Carvalho de Melo f7875966dc tools headers UAPI: Sync files changed by new fchmodat2 and map_shadow_stack syscalls with the kernel sources
To pick the changes in these csets:

  c35559f94e ("x86/shstk: Introduce map_shadow_stack syscall")
  78252deb02 ("arch: Register fchmodat2, usually as syscall 452")

That add support for this new syscall in tools such as 'perf trace'.

For instance, this is now possible:

  # perf trace -v -e fchmodat*,map_shadow_stack --max-events=4
  Using CPUID AuthenticAMD-25-21-0
  Reusing "openat" BPF sys_enter augmenter for "fchmodat"
  event qualifier tracepoint filter: (common_pid != 3499340 && common_pid != 11259) && (id == 268 || id == 452 || id == 453)
  ^C#

  And it'll work as with other syscalls, for instance openat:

  # perf trace -e openat* --max-events=4
     0.000 ( 0.015 ms): systemd-oomd/1150 openat(dfd: CWD, filename: "/proc/meminfo", flags: RDONLY|CLOEXEC)    = 11
     0.068 ( 0.019 ms): systemd-oomd/1150 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1001.slice/user@1001.service/memory.pressure", flags: RDONLY|CLOEXEC) = 11
     0.119 ( 0.008 ms): systemd-oomd/1150 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1001.slice/user@1001.service/memory.current", flags: RDONLY|CLOEXEC) = 11
     0.138 ( 0.006 ms): systemd-oomd/1150 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1001.slice/user@1001.service/memory.min", flags: RDONLY|CLOEXEC) = 11
  #

That is the filter expression attached to the raw_syscalls:sys_{enter,exit}
tracepoints.

  $ find tools/perf/arch/ -name "syscall*tbl" | xargs grep -E fchmodat\|sys_map_shadow_stack
  tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl:258	n64	fchmodat			sys_fchmodat
  tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl:452	n64	fchmodat2			sys_fchmodat2
  tools/perf/arch/powerpc/entry/syscalls/syscall.tbl:297	common	fchmodat			sys_fchmodat
  tools/perf/arch/powerpc/entry/syscalls/syscall.tbl:452	common	fchmodat2			sys_fchmodat2
  tools/perf/arch/s390/entry/syscalls/syscall.tbl:299  common	fchmodat		sys_fchmodat			sys_fchmodat
  tools/perf/arch/s390/entry/syscalls/syscall.tbl:452  common	fchmodat2		sys_fchmodat2			sys_fchmodat2
  tools/perf/arch/x86/entry/syscalls/syscall_64.tbl:268	common	fchmodat		sys_fchmodat
  tools/perf/arch/x86/entry/syscalls/syscall_64.tbl:452	common	fchmodat2		sys_fchmodat2
  tools/perf/arch/x86/entry/syscalls/syscall_64.tbl:453	64	map_shadow_stack	sys_map_shadow_stack
  $

  $ grep -Ew map_shadow_stack\|fchmodat2 /tmp/build/perf-tools/arch/x86/include/generated/asm/syscalls_64.c
	[452] = "fchmodat2",
	[453] = "map_shadow_stack",
  $

This addresses these perf build warnings:

  Warning: Kernel ABI header differences:
    diff -u tools/include/uapi/asm-generic/unistd.h include/uapi/asm-generic/unistd.h
    diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl
    diff -u tools/perf/arch/powerpc/entry/syscalls/syscall.tbl arch/powerpc/kernel/syscalls/syscall.tbl
    diff -u tools/perf/arch/s390/entry/syscalls/syscall.tbl arch/s390/kernel/syscalls/syscall.tbl
    diff -u tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl arch/mips/kernel/syscalls/syscall_n64.tbl

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Link: https://lore.kernel.org/lkml/ZP8bE7aXDBu%2Fdrak@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-09-13 08:24:51 -03:00
..
bitsperlong.h asm-generic: Unify uapi bitsperlong.h for arm64, riscv and loongarch 2023-06-22 17:04:36 +02:00
bpf_perf_event.h selftests/bpf: sync kernel headers and introduce arch support in Makefile 2017-12-05 15:02:41 +01:00
errno-base.h tools include asm-generic: Grab errno.h and errno-base.h 2018-01-23 09:51:37 -03:00
errno.h tools include asm-generic: Grab errno.h and errno-base.h 2018-01-23 09:51:37 -03:00
fcntl.h open: return EINVAL for O_DIRECTORY | O_CREAT 2023-03-22 11:06:55 +01:00
ioctls.h tools uapi asm-generic: Synchronize ioctls.h 2018-11-19 12:31:45 -08:00
mman-common-tools.h tools headers uapi: Sync asm-generic/mman-common.h and linux/mman.h 2019-03-28 14:31:56 -03:00
mman-common.h mm/madvise: introduce MADV_COLLAPSE sync hugepage collapse 2022-09-11 20:25:46 -07:00
mman.h tools headers UAPI: Update tools's copy of mman.h headers 2019-07-29 09:02:58 -03:00
socket.h net: core: add getsockopt SO_PEERPIDFD 2023-06-12 10:45:50 +01:00
unistd.h tools headers UAPI: Sync files changed by new fchmodat2 and map_shadow_stack syscalls with the kernel sources 2023-09-13 08:24:51 -03:00