From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/include/linux/pstore.h | 53 ++++++++++++++++++++++++++++++-----------------------
1 files changed, 30 insertions(+), 23 deletions(-)
diff --git a/kernel/include/linux/pstore.h b/kernel/include/linux/pstore.h
index 09b6d65..3029c7f 100644
--- a/kernel/include/linux/pstore.h
+++ b/kernel/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
@@ -32,13 +20,19 @@
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,
@@ -47,8 +41,13 @@
#ifdef CONFIG_PSTORE_BOOT_LOG
PSTORE_TYPE_BOOT_LOG = 9,
#endif
- 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;
/**
@@ -88,7 +87,7 @@
/**
* 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: semaphore to serialize access to @buf
@@ -100,6 +99,12 @@
*
* @read_mutex: serializes @open, @read, @close, and @erase callbacks
* @flags: bitfield of frontends the backend can accept writes for
+ * @max_reason: Used when PSTORE_FLAGS_DMESG is set. Contains the
+ * kmsg_dump_reason enum value. KMSG_DUMP_UNDEF means
+ * "use existing kmsg_dump() filtering, based on the
+ * printk.always_kmsg_dump boot param" (which is either
+ * KMSG_DUMP_OOPS when false, or KMSG_DUMP_MAX when
+ * true); see printk.always_kmsg_dump for more details.
* @data: backend-private pointer passed back during callbacks
*
* Callbacks:
@@ -174,7 +179,7 @@
*/
struct pstore_info {
struct module *owner;
- char *name;
+ const char *name;
struct semaphore buf_lock;
char *buf;
@@ -183,6 +188,7 @@
struct mutex read_mutex;
int flags;
+ int max_reason;
void *data;
int (*open)(struct pstore_info *psi);
@@ -195,13 +201,14 @@
};
/* 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)
#ifdef CONFIG_PSTORE_BOOT_LOG
-#define PSTORE_FLAGS_BOOT_LOG (1 << 4)
+#define PSTORE_FLAGS_BOOT_LOG BIT(4)
#endif
+
extern int pstore_register(struct pstore_info *);
extern void pstore_unregister(struct pstore_info *);
--
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