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| author | Jason Baron <jbaron@redhat.com> | 2009-08-10 22:52:13 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-08-11 20:35:25 +0200 |
| commit | eeac19a7efa150231e4a6bb110d6f27500bcc8ce (patch) | |
| tree | 99b59b07b3bd56c8ce1a352081280c8de4c177bb /arch | |
| parent | tracing: Rename set_tracer_flags()'s local variable trace_flags (diff) | |
| download | linux-eeac19a7efa150231e4a6bb110d6f27500bcc8ce.tar.xz linux-eeac19a7efa150231e4a6bb110d6f27500bcc8ce.zip | |
tracing: Map syscall name to number
Add a new function to support translating a syscall name to number at
runtime.
This allows the syscall event tracer to map syscall names to number.
Signed-off-by: Jason Baron <jbaron@redhat.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Jiaying Zhang <jiayingz@google.com>
Cc: Martin Bligh <mbligh@google.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/ftrace.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 8e9663413b7f..afb31d72618d 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -500,6 +500,22 @@ struct syscall_metadata *syscall_nr_to_meta(int nr) return syscalls_metadata[nr]; } +int syscall_name_to_nr(char *name) +{ + int i; + + if (!syscalls_metadata) + return -1; + + for (i = 0; i < FTRACE_SYSCALL_MAX; i++) { + if (syscalls_metadata[i]) { + if (!strcmp(syscalls_metadata[i]->name, name)) + return i; + } + } + return -1; +} + void arch_init_ftrace_syscalls(void) { int i; |