diff options
Diffstat (limited to 'target/linux/generic/patches-3.0/930-crashlog.patch')
| -rw-r--r-- | target/linux/generic/patches-3.0/930-crashlog.patch | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/target/linux/generic/patches-3.0/930-crashlog.patch b/target/linux/generic/patches-3.0/930-crashlog.patch deleted file mode 100644 index ecca186..0000000 --- a/target/linux/generic/patches-3.0/930-crashlog.patch +++ /dev/null @@ -1,242 +0,0 @@ ---- /dev/null -+++ b/include/linux/crashlog.h -@@ -0,0 +1,12 @@ -+#ifndef __CRASHLOG_H -+#define __CRASHLOG_H -+ -+#ifdef CONFIG_CRASHLOG -+void __init crashlog_init_mem(struct bootmem_data *bdata); -+#else -+static inline void crashlog_init_mem(struct bootmem_data *bdata) -+{ -+} -+#endif -+ -+#endif ---- a/init/Kconfig -+++ b/init/Kconfig -@@ -879,6 +879,10 @@ config RELAY - - If unsure, say N. - -+config CRASHLOG -+ bool "Crash logging" -+ depends on !NO_BOOTMEM && !HAVE_MEMBLOCK -+ - config BLK_DEV_INITRD - bool "Initial RAM filesystem and RAM disk (initramfs/initrd) support" - depends on BROKEN || !FRV ---- a/kernel/Makefile -+++ b/kernel/Makefile -@@ -107,6 +107,7 @@ obj-$(CONFIG_PERF_EVENTS) += events/ - obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o - obj-$(CONFIG_PADATA) += padata.o - obj-$(CONFIG_CRASH_DUMP) += crash_dump.o -+obj-$(CONFIG_CRASHLOG) += crashlog.o - - ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y) - # According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is ---- /dev/null -+++ b/kernel/crashlog.c -@@ -0,0 +1,171 @@ -+/* -+ * Crash information logger -+ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org> -+ * -+ * Based on ramoops.c -+ * Copyright (C) 2010 Marco Stornelli <marco.stornelli@gmail.com> -+ * -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public License -+ * version 2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, but -+ * WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -+ * General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA -+ * 02110-1301 USA -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/bootmem.h> -+#include <linux/debugfs.h> -+#include <linux/crashlog.h> -+#include <linux/kmsg_dump.h> -+#include <linux/module.h> -+#include <linux/pfn.h> -+#include <asm/io.h> -+ -+#define CRASHLOG_PAGES 4 -+#define CRASHLOG_SIZE (CRASHLOG_PAGES * PAGE_SIZE) -+#define CRASHLOG_MAGIC 0xa1eedead -+ -+/* -+ * Start the log at 1M before the end of RAM, as some boot loaders like -+ * to use the end of the RAM for stack usage and other things -+ * If this fails, fall back to using the last part. -+ */ -+#define CRASHLOG_OFFSET (1024 * 1024) -+ -+struct crashlog_data { -+ u32 magic; -+ u32 len; -+ u8 data[]; -+}; -+ -+static struct debugfs_blob_wrapper crashlog_blob; -+static unsigned long crashlog_addr = 0; -+static struct crashlog_data *crashlog_buf; -+static struct kmsg_dumper dump; -+static bool first = true; -+ -+extern struct list_head *crashlog_modules; -+ -+void __init crashlog_init_mem(bootmem_data_t *bdata) -+{ -+ unsigned long addr; -+ -+ if (crashlog_addr) -+ return; -+ -+ addr = PFN_PHYS(bdata->node_low_pfn) - CRASHLOG_OFFSET; -+ if (reserve_bootmem(addr, CRASHLOG_SIZE, BOOTMEM_EXCLUSIVE) < 0) { -+ printk("Crashlog failed to allocate RAM at address 0x%lx\n", addr); -+ bdata->node_low_pfn -= CRASHLOG_PAGES; -+ addr = PFN_PHYS(bdata->node_low_pfn); -+ } -+ crashlog_addr = addr; -+} -+ -+static void __init crashlog_copy(void) -+{ -+ if (crashlog_buf->magic != CRASHLOG_MAGIC) -+ return; -+ -+ if (!crashlog_buf->len || crashlog_buf->len > -+ CRASHLOG_SIZE - sizeof(*crashlog_buf)) -+ return; -+ -+ crashlog_blob.size = crashlog_buf->len; -+ crashlog_blob.data = kmemdup(crashlog_buf->data, -+ crashlog_buf->len, GFP_KERNEL); -+ -+ debugfs_create_blob("crashlog", 0700, NULL, &crashlog_blob); -+} -+ -+static int get_maxlen(void) -+{ -+ return CRASHLOG_SIZE - sizeof(*crashlog_buf) - crashlog_buf->len; -+} -+ -+static void crashlog_printf(const char *fmt, ...) -+{ -+ va_list args; -+ int len = get_maxlen(); -+ -+ if (!len) -+ return; -+ -+ va_start(args, fmt); -+ crashlog_buf->len += vsnprintf( -+ &crashlog_buf->data[crashlog_buf->len], -+ len, fmt, args); -+ va_end(args); -+} -+ -+static void crashlog_do_dump(struct kmsg_dumper *dumper, -+ enum kmsg_dump_reason reason, const char *s1, unsigned long l1, -+ const char *s2, unsigned long l2) -+{ -+ unsigned long s1_start, s2_start; -+ unsigned long l1_cpy, l2_cpy; -+ struct timeval tv; -+ struct module *m; -+ char *buf; -+ int len; -+ -+ if (!first) -+ crashlog_printf("\n===================================\n"); -+ -+ do_gettimeofday(&tv); -+ crashlog_printf("Time: %lu.%lu\n", -+ (long)tv.tv_sec, (long)tv.tv_usec); -+ -+ if (first) { -+ crashlog_printf("Modules:"); -+ list_for_each_entry(m, crashlog_modules, list) { -+ crashlog_printf("\t%s@%p+%x", m->name, -+ m->module_core, m->core_size, -+ m->module_init, m->init_size); -+ } -+ crashlog_printf("\n"); -+ first = false; -+ } -+ -+ buf = (char *)&crashlog_buf->data[crashlog_buf->len]; -+ len = get_maxlen(); -+ -+ l2_cpy = min(l2, (unsigned long)len); -+ l1_cpy = min(l1, (unsigned long)len - l2_cpy); -+ -+ s2_start = l2 - l2_cpy; -+ s1_start = l1 - l1_cpy; -+ -+ memcpy(buf, s1 + s1_start, l1_cpy); -+ memcpy(buf + l1_cpy, s2 + s2_start, l2_cpy); -+ crashlog_buf->len += l1_cpy + l2_cpy; -+} -+ -+ -+int __init crashlog_init_fs(void) -+{ -+ if (!crashlog_addr) -+ return -ENOMEM; -+ -+ crashlog_buf = ioremap(crashlog_addr, CRASHLOG_SIZE); -+ -+ crashlog_copy(); -+ -+ crashlog_buf->magic = CRASHLOG_MAGIC; -+ crashlog_buf->len = 0; -+ -+ dump.dump = crashlog_do_dump; -+ kmsg_dump_register(&dump); -+ -+ return 0; -+} -+module_init(crashlog_init_fs); ---- a/mm/bootmem.c -+++ b/mm/bootmem.c -@@ -15,6 +15,7 @@ - #include <linux/module.h> - #include <linux/kmemleak.h> - #include <linux/range.h> -+#include <linux/crashlog.h> - #include <linux/memblock.h> - - #include <asm/bug.h> -@@ -178,6 +179,7 @@ static unsigned long __init free_all_boo - if (!bdata->node_bootmem_map) - return 0; - -+ crashlog_init_mem(bdata); - start = bdata->node_min_pfn; - end = bdata->node_low_pfn; - ---- a/kernel/module.c -+++ b/kernel/module.c -@@ -107,6 +107,9 @@ static LIST_HEAD(modules); - #ifdef CONFIG_KGDB_KDB - struct list_head *kdb_modules = &modules; /* kdb needs the list of modules */ - #endif /* CONFIG_KGDB_KDB */ -+#ifdef CONFIG_CRASHLOG -+struct list_head *crashlog_modules = &modules; -+#endif - - - /* Block module loading/unloading? */ |