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 239f14b2b55a..99df1101d2a5 100644 --- a/Documentation/trace/ftrace-design.txt +++ b/Documentation/trace/ftrace-design.txt | |||
| @@ -218,11 +218,10 @@ HAVE_SYSCALL_TRACEPOINTS | |||
| 218 | 218 | ||
| 219 | You need very few things to get the syscalls tracing in an arch. | 219 | You need very few things to get the syscalls tracing in an arch. |
| 220 | 220 | ||
| 221 | - Support HAVE_ARCH_TRACEHOOK (see arch/Kconfig). | ||
| 221 | - Have a NR_syscalls variable in <asm/unistd.h> that provides the number | 222 | - Have a NR_syscalls variable in <asm/unistd.h> that provides the number |
| 222 | of syscalls supported by the arch. | 223 | of syscalls supported by the arch. |
| 223 | - Implement arch_syscall_addr() that resolves a syscall address from a | 224 | - Support the TIF_SYSCALL_TRACEPOINT thread flags. |
| 224 | syscall number. | ||
| 225 | - Support the TIF_SYSCALL_TRACEPOINT thread flags | ||
| 226 | - Put the trace_sys_enter() and trace_sys_exit() tracepoints calls from ptrace | 225 | - Put the trace_sys_enter() and trace_sys_exit() tracepoints calls from ptrace |
| 227 | in the ptrace syscalls tracing path. | 226 | in the ptrace syscalls tracing path. |
| 228 | - Tag this arch as HAVE_SYSCALL_TRACEPOINTS. | 227 | - Tag this arch as HAVE_SYSCALL_TRACEPOINTS. |