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| author | David S. Miller <davem@davemloft.net> | 2009-12-06 00:22:26 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-12-06 00:22:26 +0100 |
| commit | 28b4d5cc17c20786848cdc07b7ea237a309776bb (patch) | |
| tree | bae406a4b17229dcce7c11be5073f7a67665e477 /Documentation/trace/ftrace-design.txt | |
| parent | mac80211: fix reorder buffer release (diff) | |
| parent | Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/k... (diff) | |
| download | linux-28b4d5cc17c20786848cdc07b7ea237a309776bb.tar.xz linux-28b4d5cc17c20786848cdc07b7ea237a309776bb.zip | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
drivers/net/pcmcia/fmvj18x_cs.c
drivers/net/pcmcia/nmclan_cs.c
drivers/net/pcmcia/xirc2ps_cs.c
drivers/net/wireless/ray_cs.c
Diffstat (limited to 'Documentation/trace/ftrace-design.txt')
| -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 |