Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/pstore.h b/include/linux/pstore.h
index 30fcec3..e779441 100644
--- a/include/linux/pstore.h
+++ b/include/linux/pstore.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Persistent Storage - pstore.h
*
@@ -5,19 +6,6 @@
*
* This code is the generic layer to export data records from platform
* level persistent storage via a file system.
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _LINUX_PSTORE_H
#define _LINUX_PSTORE_H
@@ -26,27 +14,38 @@
#include <linux/errno.h>
#include <linux/kmsg_dump.h>
#include <linux/mutex.h>
-#include <linux/spinlock.h>
+#include <linux/semaphore.h>
#include <linux/time.h>
#include <linux/types.h>
struct module;
-/* pstore record types (see fs/pstore/inode.c for filename templates) */
+/*
+ * pstore record types (see fs/pstore/platform.c for pstore_type_names[])
+ * These values may be written to storage (see EFI vars backend), so
+ * they are kind of an ABI. Be careful changing the mappings.
+ */
enum pstore_type_id {
+ /* Frontend storage types */
PSTORE_TYPE_DMESG = 0,
PSTORE_TYPE_MCE = 1,
PSTORE_TYPE_CONSOLE = 2,
PSTORE_TYPE_FTRACE = 3,
- /* PPC64 partition types */
+
+ /* PPC64-specific partition types */
PSTORE_TYPE_PPC_RTAS = 4,
PSTORE_TYPE_PPC_OF = 5,
PSTORE_TYPE_PPC_COMMON = 6,
PSTORE_TYPE_PMSG = 7,
PSTORE_TYPE_PPC_OPAL = 8,
- PSTORE_TYPE_UNKNOWN = 255
+
+ /* End of the list */
+ PSTORE_TYPE_MAX
};
+const char *pstore_type_to_name(enum pstore_type_id type);
+enum pstore_type_id pstore_name_to_type(const char *name);
+
struct pstore_info;
/**
* struct pstore_record - details of a pstore record entry
@@ -85,10 +84,10 @@
/**
* struct pstore_info - backend pstore driver structure
*
- * @owner: module which is repsonsible for this backend driver
+ * @owner: module which is responsible for this backend driver
* @name: name of the backend driver
*
- * @buf_lock: spinlock to serialize access to @buf
+ * @buf_lock: semaphore to serialize access to @buf
* @buf: preallocated crash dump buffer
* @bufsize: size of @buf available for crash dump bytes (must match
* smallest number of bytes available for writing to a
@@ -173,7 +172,7 @@
struct module *owner;
char *name;
- spinlock_t buf_lock;
+ struct semaphore buf_lock;
char *buf;
size_t bufsize;
@@ -192,14 +191,13 @@
};
/* Supported frontends */
-#define PSTORE_FLAGS_DMESG (1 << 0)
-#define PSTORE_FLAGS_CONSOLE (1 << 1)
-#define PSTORE_FLAGS_FTRACE (1 << 2)
-#define PSTORE_FLAGS_PMSG (1 << 3)
+#define PSTORE_FLAGS_DMESG BIT(0)
+#define PSTORE_FLAGS_CONSOLE BIT(1)
+#define PSTORE_FLAGS_FTRACE BIT(2)
+#define PSTORE_FLAGS_PMSG BIT(3)
extern int pstore_register(struct pstore_info *);
extern void pstore_unregister(struct pstore_info *);
-extern bool pstore_cannot_block_path(enum kmsg_dump_reason reason);
struct pstore_ftrace_record {
unsigned long ip;