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authorAndi Kleen <ak@suse.de>2006-06-26 13:56:52 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-26 10:48:16 -0700
commitbebfa1013eee1d91b3242e5801cc8fbdfaf148ec (patch)
treed1abf916c29bbb5c312717f57798987268aff9a9 /fs
parentf201611fcecdfa825471dc425ee007997228fae4 (diff)
[PATCH] x86_64: Add compat_printk and sysctl to turn off compat layer warnings
Sometimes e.g. with crashme the compat layer warnings can be noisy. Add a way to turn them off by gating all output through compat_printk that checks a global sysctl. The default is not changed. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/compat.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/fs/compat.c b/fs/compat.c
index 7e7e5bc4f3cf..e31e9cf96647 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -55,6 +55,20 @@
extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
+int compat_log = 1;
+
+int compat_printk(const char *fmt, ...)
+{
+ va_list ap;
+ int ret;
+ if (!compat_log)
+ return 0;
+ va_start(ap, fmt);
+ ret = vprintk(fmt, ap);
+ va_end(ap);
+ return ret;
+}
+
/*
* Not all architectures have sys_utime, so implement this in terms
* of sys_utimes.
@@ -359,7 +373,7 @@ static void compat_ioctl_error(struct file *filp, unsigned int fd,
sprintf(buf,"'%c'", (cmd>>24) & 0x3f);
if (!isprint(buf[1]))
sprintf(buf, "%02x", buf[1]);
- printk("ioctl32(%s:%d): Unknown cmd fd(%d) "
+ compat_printk("ioctl32(%s:%d): Unknown cmd fd(%d) "
"cmd(%08x){%s} arg(%08x) on %s\n",
current->comm, current->pid,
(int)fd, (unsigned int)cmd, buf,