From 131eeb45b96107b19f9f231d6e81348b471b2ed0 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Thu, 12 Oct 2023 04:13:59 -0700 Subject: netconsole: Initialize configfs_item for default targets For netconsole targets allocated during the boot time (passing netconsole=... argument), netconsole_target->item is not initialized. That is not a problem because it is not used inside configfs. An upcoming patch will be using it, thus, initialize the targets with the name 'cmdline' plus a counter starting from 0. This name will match entries in the configfs later. Suggested-by: Joel Becker Signed-off-by: Breno Leitao Link: https://lore.kernel.org/r/20231012111401.333798-3-leitao@debian.org Signed-off-by: Jakub Kicinski --- drivers/net/netconsole.c | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) (limited to 'drivers/net/netconsole.c') diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index d609fb59cf99..e153bce4dee4 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -53,6 +53,8 @@ static bool oops_only = false; module_param(oops_only, bool, 0600); MODULE_PARM_DESC(oops_only, "Only log oops messages"); +#define NETCONSOLE_PARAM_TARGET_PREFIX "cmdline" + #ifndef MODULE static int __init option_setup(char *opt) { @@ -165,6 +167,10 @@ static void netconsole_target_put(struct netconsole_target *nt) { } +static void populate_configfs_item(struct netconsole_target *nt, + int cmdline_count) +{ +} #endif /* CONFIG_NETCONSOLE_DYNAMIC */ /* Allocate and initialize with defaults. @@ -688,6 +694,17 @@ static struct configfs_subsystem netconsole_subsys = { }, }; +static void populate_configfs_item(struct netconsole_target *nt, + int cmdline_count) +{ + char target_name[16]; + + snprintf(target_name, sizeof(target_name), "%s%d", + NETCONSOLE_PARAM_TARGET_PREFIX, cmdline_count); + config_item_init_type_name(&nt->item, target_name, + &netconsole_target_type); +} + #endif /* CONFIG_NETCONSOLE_DYNAMIC */ /* Handle network interface device notifications */ @@ -887,7 +904,8 @@ static void write_msg(struct console *con, const char *msg, unsigned int len) } /* Allocate new target (from boot/module param) and setup netpoll for it */ -static struct netconsole_target *alloc_param_target(char *target_config) +static struct netconsole_target *alloc_param_target(char *target_config, + int cmdline_count) { struct netconsole_target *nt; int err; @@ -922,6 +940,7 @@ static struct netconsole_target *alloc_param_target(char *target_config) if (err) goto fail; + populate_configfs_item(nt, cmdline_count); nt->enabled = true; return nt; @@ -954,6 +973,7 @@ static int __init init_netconsole(void) { int err; struct netconsole_target *nt, *tmp; + unsigned int count = 0; bool extended = false; unsigned long flags; char *target_config; @@ -961,7 +981,7 @@ static int __init init_netconsole(void) if (strnlen(input, MAX_PARAM_LENGTH)) { while ((target_config = strsep(&input, ";"))) { - nt = alloc_param_target(target_config); + nt = alloc_param_target(target_config, count); if (IS_ERR(nt)) { err = PTR_ERR(nt); goto fail; @@ -977,6 +997,7 @@ static int __init init_netconsole(void) spin_lock_irqsave(&target_list_lock, flags); list_add(&nt->list, &target_list); spin_unlock_irqrestore(&target_list_lock, flags); + count++; } } -- cgit v1.2.3-58-ga151