]> git.karo-electronics.de Git - linux-beck.git/commit
perf tools: Build syscall table .c header from kernel's syscall_64.tbl
authorArnaldo Carvalho de Melo <acme@redhat.com>
Mon, 4 Apr 2016 22:05:36 +0000 (19:05 -0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Fri, 8 Apr 2016 12:58:14 +0000 (09:58 -0300)
commit1b700c9975008615ad470cf79acc8455ce60a695
treec7741b3db935280acc9365ef01b0dcda8f2fc296
parent5af56fab2b11769e35ce96613d321bcc0f7b84c1
perf tools: Build syscall table .c header from kernel's syscall_64.tbl

We used libaudit to map ids to syscall names and vice-versa, but that
imposes a delay in supporting new syscalls, having to wait for libaudit
to get those new syscalls on its tables.

To remove that delay, for x86_64 initially, grab a copy of
arch/x86/entry/syscalls/syscall_64.tbl and use it to generate those
tables.

Syscalls currently not available in audit-libs:

  # trace -e copy_file_range,membarrier,mlock2,pread64,pwrite64,timerfd_create,userfaultfd
  Error: Invalid syscall copy_file_range, membarrier, mlock2, pread64, pwrite64, timerfd_create, userfaultfd
  Hint: try 'perf list syscalls:sys_enter_*'
  Hint: and: 'man syscalls'
  #

With this patch:

  # trace -e copy_file_range,membarrier,mlock2,pread64,pwrite64,timerfd_create,userfaultfd
    8505.733 ( 0.010 ms): gnome-shell/2519 timerfd_create(flags: 524288) = 36
    8506.688 ( 0.005 ms): gnome-shell/2519 timerfd_create(flags: 524288) = 40
   30023.097 ( 0.025 ms): qemu-system-x8/24629 pwrite64(fd: 18, buf: 0x7f63ae382000, count: 4096, pos: 529592320) = 4096
   31268.712 ( 0.028 ms): qemu-system-x8/24629 pwrite64(fd: 18, buf: 0x7f63afd8b000, count: 4096, pos: 2314133504) = 4096
   31268.854 ( 0.016 ms): qemu-system-x8/24629 pwrite64(fd: 18, buf: 0x7f63afda2000, count: 4096, pos: 2314137600) = 4096

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-51xfjbxevdsucmnbc4ka5r88@git.kernel.org
[ Added make dep for 'prepare' in 'LIBPERF_IN', fix by Wang Nan to fix parallell build ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/Makefile.perf
tools/perf/arch/x86/Makefile
tools/perf/arch/x86/entry/syscalls/syscall_64.tbl [new file with mode: 0644]
tools/perf/arch/x86/entry/syscalls/syscalltbl.sh [new file with mode: 0755]
tools/perf/config/Makefile
tools/perf/util/Build
tools/perf/util/syscalltbl.c