From c36264dfb2d6fa6383082de0a1bba8e12b477da1 Mon Sep 17 00:00:00 2001 From: Mike Galbraith Date: Wed, 6 Dec 2006 20:37:42 -0800 Subject: [PATCH] remove the syslog interface when printk is disabled Attempts to read() from the non-existent dmesg buffer will return zero and userspace tends to get stuck in a busyloop. So just remove /dev/kmsg altogether if CONFIG_PRINTK=n. Signed-off-by: Mike Galbraith Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/proc/Makefile | 3 ++- fs/proc/proc_misc.c | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'fs/proc') diff --git a/fs/proc/Makefile b/fs/proc/Makefile index 7431d7ba2d0..f6c77627257 100644 --- a/fs/proc/Makefile +++ b/fs/proc/Makefile @@ -8,8 +8,9 @@ proc-y := nommu.o task_nommu.o proc-$(CONFIG_MMU) := mmu.o task_mmu.o proc-y += inode.o root.o base.o generic.o array.o \ - kmsg.o proc_tty.o proc_misc.o + proc_tty.o proc_misc.o proc-$(CONFIG_PROC_KCORE) += kcore.o proc-$(CONFIG_PROC_VMCORE) += vmcore.o proc-$(CONFIG_PROC_DEVICETREE) += proc_devtree.o +proc-$(CONFIG_PRINTK) += kmsg.o diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c index 93c43b676e5..51815cece6f 100644 --- a/fs/proc/proc_misc.c +++ b/fs/proc/proc_misc.c @@ -696,9 +696,11 @@ void __init proc_misc_init(void) proc_symlink("mounts", NULL, "self/mounts"); /* And now for trickier ones */ +#ifdef CONFIG_PRINTK entry = create_proc_entry("kmsg", S_IRUSR, &proc_root); if (entry) entry->proc_fops = &proc_kmsg_operations; +#endif create_seq_entry("devices", 0, &proc_devinfo_operations); create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations); #ifdef CONFIG_BLOCK -- cgit v1.2.3