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authorIngo Molnar <mingo@elte.hu>2010-02-27 10:06:10 +0100
committerIngo Molnar <mingo@elte.hu>2010-02-27 10:06:10 +0100
commit6fb83029db161141d68cf019760a893d03d0682b (patch)
tree6f149c23cedc9b2a5f72b5b90ab8426b39afbb7c /Documentation/trace
parent281b3714e91162b66add1cfac404cf7b81e3e2f2 (diff)
parente01292b1fd68ff2abe234d584b06e64344d2c1de (diff)
downloadlinux-6fb83029db161141d68cf019760a893d03d0682b.tar.gz
Merge branch 'tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core
Diffstat (limited to 'Documentation/trace')
-rw-r--r--Documentation/trace/ftrace-design.txt5
1 files changed, 2 insertions, 3 deletions
diff --git a/Documentation/trace/ftrace-design.txt b/Documentation/trace/ftrace-design.txt
index 6a5a579126b..f1f81afee8a 100644
--- a/Documentation/trace/ftrace-design.txt
+++ b/Documentation/trace/ftrace-design.txt
@@ -238,11 +238,10 @@ HAVE_SYSCALL_TRACEPOINTS
You need very few things to get the syscalls tracing in an arch.
+- Support HAVE_ARCH_TRACEHOOK (see arch/Kconfig).
- 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
+- 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.