From 67e67ceaac5bf55dbdceb704ff2d763d438b5373 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 22 Oct 2008 10:00:23 -0500 Subject: core_param() for genuinely core kernel parameters There are a lot of one-liner uses of __setup() in the kernel: they're cumbersome and not queryable (definitely not settable) via /sys. Yet it's ugly to simplify them to module_param(), because by default that inserts a prefix of the module name (usually filename). So, introduce a "core_param". The parameter gets no prefix, but appears in /sys/module/kernel/parameters/ (if non-zero perms arg). I thought about using the name "core", but that's more common than "kernel". And if you create a module called "kernel", you will die a horrible death. Signed-off-by: Rusty Russell --- kernel/params.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'kernel/params.c') diff --git a/kernel/params.c b/kernel/params.c index f27c992a4625..b077f1b045d3 100644 --- a/kernel/params.c +++ b/kernel/params.c @@ -637,14 +637,14 @@ static void __init param_sysfs_builtin(void) dot = strchr(kp->name, '.'); if (!dot) { - DEBUGP("couldn't find period in first %d characters " - "of %s\n", MODULE_NAME_LEN, kp->name); - continue; + /* This happens for core_param() */ + strcpy(modname, "kernel"); + name_len = 0; + } else { + name_len = dot - kp->name + 1; + strlcpy(modname, kp->name, name_len); } - name_len = dot - kp->name; - strncpy(modname, kp->name, name_len); - modname[name_len] = '\0'; - kernel_add_sysfs_param(modname, kp, name_len+1); + kernel_add_sysfs_param(modname, kp, name_len); } } -- cgit v1.2.3