linux-kernel - [PATCH 1/2] make arch_init_ftrace

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sun,  5 Apr 2009 10:17:53 -0400
From:	"Frank Ch. Eigler" <fche@...stic.org>
To:	linux-kernel@...r.kernel.org, utrace-devel@...hat.com
Cc:	systemtap@...rces.redhat.com, fweisbec@...il.com,
	rostedt@...dmis.org, mingo@...e.hu,
	"Frank Ch. Eigler" <fche@...stic.org>
Subject: [PATCH 1/2] make arch_init_ftrace_syscalls multiply callable

Since both the utrace-based ftrace engine and the original
syscall-specific ftrace engine use the syscall pretty-printer, this
initialization function needs to be callable from each of them.

Signed-off-by: Frank Ch. Eigler <fche@...stic.org>
---
 arch/x86/kernel/ftrace.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 1d0d7f4..1d99d3d 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -498,6 +498,9 @@ void arch_init_ftrace_syscalls(void)
 	if (atomic_inc_return(&refs) != 1)
 		goto end;
 
+        if (syscalls_metadata)
+                return;
+
 	syscalls_metadata = kzalloc(sizeof(*syscalls_metadata) *
 					FTRACE_SYSCALL_MAX, GFP_KERNEL);
 	if (!syscalls_metadata) {
-- 
1.6.0.6

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/