diff options
Diffstat (limited to 'Documentation/trace/ftrace-design.txt')
| -rw-r--r-- | Documentation/trace/ftrace-design.txt | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/Documentation/trace/ftrace-design.txt b/Documentation/trace/ftrace-design.txt index 6a5a579126b0..f1f81afee8a0 100644 --- a/Documentation/trace/ftrace-design.txt +++ b/Documentation/trace/ftrace-design.txt | |||
| @@ -238,11 +238,10 @@ HAVE_SYSCALL_TRACEPOINTS | |||
| 238 | 238 | ||
| 239 | You need very few things to get the syscalls tracing in an arch. | 239 | You need very few things to get the syscalls tracing in an arch. |
| 240 | 240 | ||
| 241 | - Support HAVE_ARCH_TRACEHOOK (see arch/Kconfig). | ||
| 241 | - Have a NR_syscalls variable in <asm/unistd.h> that provides the number | 242 | - Have a NR_syscalls variable in <asm/unistd.h> that provides the number |
| 242 | of syscalls supported by the arch. | 243 | of syscalls supported by the arch. |
| 243 | - Implement arch_syscall_addr() that resolves a syscall address from a | 244 | - Support the TIF_SYSCALL_TRACEPOINT thread flags. |
| 244 | syscall number. | ||
| 245 | - Support the TIF_SYSCALL_TRACEPOINT thread flags | ||
| 246 | - Put the trace_sys_enter() and trace_sys_exit() tracepoints calls from ptrace | 245 | - Put the trace_sys_enter() and trace_sys_exit() tracepoints calls from ptrace |
| 247 | in the ptrace syscalls tracing path. | 246 | in the ptrace syscalls tracing path. |
| 248 | - Tag this arch as HAVE_SYSCALL_TRACEPOINTS. | 247 | - Tag this arch as HAVE_SYSCALL_TRACEPOINTS. |