Add a utility function to grab the syscall name from the syscall
metadata, given a syscall id.
Signed-off-by: Tom Zanussi <tom.zanu...@linux.intel.com>
---
kernel/trace/trace.h | 9 +++++++++
kernel/trace/trace_syscalls.c | 11 +++++++++++
2 files changed, 20 insertions(+)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 9032cf3..457fb4f 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -1277,4 +1277,13 @@ int perf_ftrace_event_register(struct ftrace_event_call
*call,
#define perf_ftrace_event_register NULL
#endif
+#ifdef CONFIG_FTRACE_SYSCALLS
+const char *get_syscall_name(int syscall);
+#else
+static inline const char *get_syscall_name(int syscall)
+{
+ return NULL;
+}
+#endif /* CONFIG_FTRACE_SYSCALLS */
+
#endif /* _LINUX_KERNEL_TRACE_H */
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 759d5e0..1abb3396 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -106,6 +106,17 @@ static struct syscall_metadata *syscall_nr_to_meta(int nr)
return syscalls_metadata[nr];
}
+const char *get_syscall_name(int syscall)
+{
+ struct syscall_metadata *entry;
+
+ entry = syscall_nr_to_meta(syscall);
+ if (!entry)
+ return NULL;
+
+ return entry->name;
+}
+
static enum print_line_t
print_syscall_enter(struct trace_iterator *iter, int flags,
struct trace_event *event)
--
1.8.3.1
--
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