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Message-Id: <bfe6d2004c9878b127449bb20855001e10fb644d.1244837725.git.jbaron@redhat.com>
Date: Fri, 12 Jun 2009 17:24:40 -0400
From: Jason Baron <jbaron@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: fweisbec@...il.com, mingo@...e.hu, laijs@...fujitsu.com,
rostedt@...dmis.org, peterz@...radead.org,
mathieu.desnoyers@...ymtl.ca, jiayingz@...gle.com,
bligh@...gle.com, roland@...hat.com, fche@...hat.com
Subject: [PATCH 1/7] add syscall tracepoints
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@...hat.com>
---
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 b79c553..30baa5b 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -502,6 +502,22 @@ 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;
--
1.6.0.6
--
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