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| author | Ingo Molnar <mingo@elte.hu> | 2009-10-23 08:23:20 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-10-23 08:23:20 +0200 |
| commit | 43315956509ca6913764861ac7dec128b91eb1ec (patch) | |
| tree | 60fd5647f150a46e63093a41417c2eef3e776b3d /Documentation/trace | |
| parent | 9bf4e7fba8006d19846fec877b6da0616b2772de (diff) | |
| parent | 6beba7adbe092e63dfe8d09fbd1e3ec140474a13 (diff) | |
| download | linux-43315956509ca6913764861ac7dec128b91eb1ec.tar.bz2 | |
Merge branch 'perf/core' into perf/probes
Conflicts:
tools/perf/Makefile
Merge reason:
- fix the conflict
- pick up the pr_*() infrastructure to queue up dependent patch
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/trace')
| -rw-r--r-- | Documentation/trace/ftrace-design.txt | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/Documentation/trace/ftrace-design.txt b/Documentation/trace/ftrace-design.txt index 7003e10f10f5..641a1ef2a7ff 100644 --- a/Documentation/trace/ftrace-design.txt +++ b/Documentation/trace/ftrace-design.txt @@ -213,10 +213,19 @@ If you can't trace NMI functions, then skip this option. <details to be filled> -HAVE_FTRACE_SYSCALLS +HAVE_SYSCALL_TRACEPOINTS --------------------- -<details to be filled> +You need very few things to get the syscalls tracing in an arch. + +- Have a NR_syscalls variable in <asm/unistd.h> that provides the number + of syscalls supported by the arch. +- Implement arch_syscall_addr() that resolves a syscall address from a + syscall number. +- Support the TIF_SYSCALL_TRACEPOINT thread flags +- Put the trace_sys_enter() and trace_sys_exit() tracepoints calls from ptrace + in the ptrace syscalls tracing path. +- Tag this arch as HAVE_SYSCALL_TRACEPOINTS. HAVE_FTRACE_MCOUNT_RECORD |