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authorAmerigo Wang <amwang@redhat.com>2012-11-08 03:42:38 +0000
committerDavid S. Miller <davem@davemloft.net>2012-11-08 22:06:36 -0500
commitc1a6085195e832a6d14ac1e6cf601b884c38c71f (patch)
tree1811791a89d6880cc692ee7aa2f4f1ef8a7741ce /drivers/net/netconsole.c
parente949b09b71d975a82f13ac88ce4ad338fed213da (diff)
downloadlinux-c1a6085195e832a6d14ac1e6cf601b884c38c71f.tar.bz2
netconsole: add oops_only module option
Some people wants to log only oops messages via netconsole, (this is also why netoops was invented) so add a module option for netconsole. This can be tuned via /sys/module/netconsole/parameters/oops_only at run time as well. Cc: David Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netconsole.c')
-rw-r--r--drivers/net/netconsole.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index b3321129a83c..6989ebe2bc79 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -56,6 +56,10 @@ static char config[MAX_PARAM_LENGTH];
module_param_string(netconsole, config, MAX_PARAM_LENGTH, 0);
MODULE_PARM_DESC(netconsole, " netconsole=[src-port]@[src-ip]/[dev],[tgt-port]@<tgt-ip>/[tgt-macaddr]");
+static bool oops_only = false;
+module_param(oops_only, bool, 0600);
+MODULE_PARM_DESC(oops_only, "Only log oops messages");
+
#ifndef MODULE
static int __init option_setup(char *opt)
{
@@ -683,6 +687,8 @@ static void write_msg(struct console *con, const char *msg, unsigned int len)
struct netconsole_target *nt;
const char *tmp;
+ if (oops_only && !oops_in_progress)
+ return;
/* Avoid taking lock and disabling interrupts unnecessarily */
if (list_empty(&target_list))
return;