• Li Zefan's avatar
    tracing/syscalls: Add filtering support · 540b7b8d
    Li Zefan authored
    Add filtering support for syscall events:
    
     # echo 'mode == 0666' > events/syscalls/sys_enter_open
     # echo 'ret == 0' > events/syscalls/sys_exit_open
     # echo 1 > events/syscalls/sys_enter_open
     # echo 1 > events/syscalls/sys_exit_open
     # cat trace
     ...
       modprobe-3084 [001] 117.463140: sys_open(filename: 917d3e8, flags: 0, mode: 1b6)
       modprobe-3084 [001] 117.463176: sys_open -> 0x0
           less-3086 [001] 117.510455: sys_open(filename: 9c6bdb8, flags: 8000, mode: 1b6)
       sendmail-2574 [001] 122.145840: sys_open(filename: b807a365, flags: 0, mode: 1b6)
     ...
    Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
    Cc: Jason Baron <jbaron@redhat.com>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    LKML-Reference: <4A8BAFCB.1040006@cn.fujitsu.com>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    540b7b8d
syscalls.h 38 KB