+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * 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 version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2017, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
#ifndef __LIBCFS_TRACEFILE_H__
#define __LIBCFS_TRACEFILE_H__
#include <libcfs/libcfs.h>
+enum cfs_trace_buf_type {
+ CFS_TCD_TYPE_PROC = 0,
+ CFS_TCD_TYPE_SOFTIRQ,
+ CFS_TCD_TYPE_IRQ,
+ CFS_TCD_TYPE_MAX
+};
+
/* trace file lock routines */
#define TRACEFILE_NAME_SIZE 1024
-extern char tracefile[TRACEFILE_NAME_SIZE];
-extern long long tracefile_size;
-
-int tracefile_init_arch(void);
-void tracefile_fini_arch(void);
-
-void tracefile_read_lock(void);
-void tracefile_read_unlock(void);
-void tracefile_write_lock(void);
-void tracefile_write_unlock(void);
-
-int tracefile_dump_all_pages(char *filename);
-void trace_debug_print(void);
-void trace_flush_pages(void);
-int trace_start_thread(void);
-void trace_stop_thread(void);
-int tracefile_init(int max_pages);
-void tracefile_exit(void);
-
-
-
-int trace_copyin_string(char *knl_buffer, int knl_buffer_nob,
- const char *usr_buffer, int usr_buffer_nob);
-int trace_copyout_string(char *usr_buffer, int usr_buffer_nob,
- const char *knl_str, char *append);
-int trace_allocate_string_buffer(char **str, int nob);
-void trace_free_string_buffer(char *str, int nob);
-int trace_dump_debug_buffer_usrstr(void *usr_str, int usr_str_nob);
-int trace_daemon_command(char *str);
-int trace_daemon_command_usrstr(void *usr_str, int usr_str_nob);
-int trace_set_debug_mb(int mb);
-int trace_set_debug_mb_usrstr(void *usr_str, int usr_str_nob);
-int trace_get_debug_mb(void);
+extern char cfs_tracefile[TRACEFILE_NAME_SIZE];
+extern long long cfs_tracefile_size;
+
+/**
+ * The path of debug log dump upcall script.
+ */
+extern char lnet_debug_log_upcall[1024];
+
+extern void libcfs_run_debug_log_upcall(char *file);
+
+int cfs_tracefile_init_arch(void);
+void cfs_tracefile_fini_arch(void);
+
+int cfs_tracefile_dump_all_pages(char *filename);
+void cfs_trace_debug_print(void);
+void cfs_trace_flush_pages(void);
+int cfs_trace_start_thread(void);
+void cfs_trace_stop_thread(void);
+int cfs_tracefile_init(int max_pages);
+void cfs_tracefile_exit(void);
+
+
+
+int cfs_trace_copyin_string(char *knl_buffer, int knl_buffer_nob,
+ const char __user *usr_buffer, int usr_buffer_nob);
+int cfs_trace_copyout_string(char __user *usr_buffer, int usr_buffer_nob,
+ const char *knl_str, char *append);
+int cfs_trace_allocate_string_buffer(char **str, int nob);
+int cfs_trace_dump_debug_buffer_usrstr(void __user *usr_str, int usr_str_nob);
+int cfs_trace_daemon_command(char *str);
+int cfs_trace_daemon_command_usrstr(void __user *usr_str, int usr_str_nob);
+int cfs_trace_set_debug_mb(int mb);
+int cfs_trace_get_debug_mb(void);
extern void libcfs_debug_dumplog_internal(void *arg);
extern void libcfs_register_panic_notifier(void);
extern void libcfs_unregister_panic_notifier(void);
extern int libcfs_panic_in_progress;
-extern int trace_max_debug_mb(void);
-#define TCD_MAX_PAGES (5 << (20 - CFS_PAGE_SHIFT))
+#define TCD_MAX_PAGES (5 << (20 - PAGE_SHIFT))
#define TCD_STOCK_PAGES (TCD_MAX_PAGES)
-#define TRACEFILE_SIZE (500 << 20)
+#define CFS_TRACEFILE_SIZE (500 << 20)
#ifdef LUSTRE_TRACEFILE_PRIVATE
/*
* Private declare for tracefile
*/
-#define TCD_MAX_PAGES (5 << (20 - CFS_PAGE_SHIFT))
+#define TCD_MAX_PAGES (5 << (20 - PAGE_SHIFT))
#define TCD_STOCK_PAGES (TCD_MAX_PAGES)
-#define TRACEFILE_SIZE (500 << 20)
+#define CFS_TRACEFILE_SIZE (500 << 20)
-/* Size of a buffer for sprinting console messages if we can't get a page
+/* Size of a buffer for sprinting console messages if we can't get a page
* from system */
-#define TRACE_CONSOLE_BUFFER_SIZE 1024
+#define CFS_TRACE_CONSOLE_BUFFER_SIZE 1024
+
+union cfs_trace_data_union {
+ struct cfs_trace_cpu_data {
+ /*
+ * Even though this structure is meant to be per-CPU, locking
+ * is needed because in some places the data may be accessed
+ * from other CPUs. This lock is directly used in trace_get_tcd
+ * and trace_put_tcd, which are called in libcfs_debug_msg and
+ * tcd_for_each_type_lock
+ */
+ spinlock_t tcd_lock;
+ unsigned long tcd_lock_flags;
-union trace_data_union {
- struct trace_cpu_data {
/*
* pages with trace records not yet processed by tracefiled.
*/
- struct list_head tcd_pages;
+ struct list_head tcd_pages;
/* number of pages on ->tcd_pages */
- unsigned long tcd_cur_pages;
+ unsigned long tcd_cur_pages;
/*
* pages with trace records already processed by
* (put_pages_on_daemon_list()). LRU pages from this list are
* discarded when list grows too large.
*/
- struct list_head tcd_daemon_pages;
+ struct list_head tcd_daemon_pages;
/* number of pages on ->tcd_daemon_pages */
- unsigned long tcd_cur_daemon_pages;
+ unsigned long tcd_cur_daemon_pages;
/*
* Maximal number of pages allowed on ->tcd_pages and
- * ->tcd_daemon_pages each.
+ * ->tcd_daemon_pages each.
* Always TCD_MAX_PAGES * tcd_pages_factor / 100 in current
* implementation.
*/
* TCD_STOCK_PAGES pagesful are consumed by trace records all
* emitted in non-blocking contexts. Which is quite unlikely.
*/
- struct list_head tcd_stock_pages;
+ struct list_head tcd_stock_pages;
/* number of pages on ->tcd_stock_pages */
unsigned long tcd_cur_stock_pages;
/* The factors to share debug memory. */
unsigned short tcd_pages_factor;
} tcd;
- char __pad[L1_CACHE_ALIGN(sizeof(struct trace_cpu_data))];
+ char __pad[L1_CACHE_ALIGN(sizeof(struct cfs_trace_cpu_data))];
};
#define TCD_MAX_TYPES 8
-extern union trace_data_union (*trace_data[TCD_MAX_TYPES])[NR_CPUS];
+extern union cfs_trace_data_union (*cfs_trace_data[TCD_MAX_TYPES])[NR_CPUS];
-#define tcd_for_each(tcd, i, j) \
- for (i = 0; trace_data[i] != NULL; i++) \
- for (j = 0, ((tcd) = &(*trace_data[i])[j].tcd); \
- j < num_possible_cpus(); j++, (tcd) = &(*trace_data[i])[j].tcd)
+#define cfs_tcd_for_each(tcd, i, j) \
+ for (i = 0; cfs_trace_data[i] != NULL; i++) \
+ for (j = 0, ((tcd) = &(*cfs_trace_data[i])[j].tcd); \
+ j < num_possible_cpus(); \
+ j++, (tcd) = &(*cfs_trace_data[i])[j].tcd)
-#define tcd_for_each_type_lock(tcd, i) \
- for (i = 0; trace_data[i] && \
- (tcd = &(*trace_data[i])[smp_processor_id()].tcd) && \
- trace_lock_tcd(tcd); trace_unlock_tcd(tcd), i++)
+#define cfs_tcd_for_each_type_lock(tcd, i, cpu) \
+ for (i = 0; cfs_trace_data[i] && \
+ (tcd = &(*cfs_trace_data[i])[cpu].tcd) && \
+ cfs_trace_lock_tcd(tcd, 1); cfs_trace_unlock_tcd(tcd, 1), i++)
/* XXX nikita: this declaration is internal to tracefile.c and should probably
* be moved there */
struct page_collection {
- struct list_head pc_pages;
- /*
- * spin-lock protecting ->pc_pages. It is taken by smp_call_function()
- * call-back functions. XXX nikita: Which is horrible: all processors
- * receive NMI at the same time only to be serialized by this
- * lock. Probably ->pc_pages should be replaced with an array of
- * NR_CPUS elements accessed locklessly.
- */
- spinlock_t pc_lock;
+ struct list_head pc_pages;
/*
* if this flag is set, collect_pages() will spill both
* ->tcd_daemon_pages and ->tcd_pages to the ->pc_pages. Otherwise,
* only ->tcd_pages are spilled.
*/
- int pc_want_daemon_pages;
+ int pc_want_daemon_pages;
};
/* XXX nikita: this declaration is internal to tracefile.c and should probably
* be moved there */
struct tracefiled_ctl {
- struct completion tctl_start;
- struct completion tctl_stop;
- cfs_waitq_t tctl_waitq;
- pid_t tctl_pid;
- atomic_t tctl_shutdown;
+ struct completion tctl_start;
+ struct completion tctl_stop;
+ wait_queue_head_t tctl_waitq;
+ pid_t tctl_pid;
+ atomic_t tctl_shutdown;
};
/*
*/
/* XXX nikita: this declaration is internal to tracefile.c and should probably
* be moved there */
-struct trace_page {
+struct cfs_trace_page {
/*
* page itself
*/
- cfs_page_t *page;
+ struct page *page;
/*
* linkage into one of the lists in trace_data_union or
* page_collection
*/
- struct list_head linkage;
+ struct list_head linkage;
/*
* number of bytes used within this page
*/
- unsigned int used;
+ unsigned int used;
/*
* cpu that owns this page
*/
- unsigned short cpu;
+ unsigned short cpu;
/*
- * type(context) of this page
+ * type(context) of this page
*/
- unsigned short type;
+ unsigned short type;
};
-extern void set_ptldebug_header(struct ptldebug_header *header,
- int subsys, int mask, const int line,
- unsigned long stack);
-extern void print_to_console(struct ptldebug_header *hdr, int mask, const char *buf,
- int len, const char *file, const char *fn);
+extern void cfs_set_ptldebug_header(struct ptldebug_header *header,
+ struct libcfs_debug_msg_data *m,
+ unsigned long stack);
+extern void cfs_print_to_console(struct ptldebug_header *hdr, int mask,
+ const char *buf, int len, const char *file,
+ const char *fn);
+
+extern int cfs_trace_lock_tcd(struct cfs_trace_cpu_data *tcd, int walking);
+extern void cfs_trace_unlock_tcd(struct cfs_trace_cpu_data *tcd, int walking);
+
+extern char *cfs_trace_console_buffers[NR_CPUS][CFS_TCD_TYPE_MAX];
+extern enum cfs_trace_buf_type cfs_trace_buf_idx_get(void);
+
+static inline char *cfs_trace_get_console_buffer(void)
+{
+ unsigned int i = get_cpu();
+ unsigned int j = cfs_trace_buf_idx_get();
+
+ return cfs_trace_console_buffers[i][j];
+}
+
+static inline struct cfs_trace_cpu_data *cfs_trace_get_tcd(void)
+{
+ struct cfs_trace_cpu_data *tcd =
+ &(*cfs_trace_data[cfs_trace_buf_idx_get()])[get_cpu()].tcd;
+
+ cfs_trace_lock_tcd(tcd, 0);
-extern struct trace_cpu_data *trace_get_tcd(void);
-extern void trace_put_tcd(struct trace_cpu_data *tcd);
-extern int trace_lock_tcd(struct trace_cpu_data *tcd);
-extern void trace_unlock_tcd(struct trace_cpu_data *tcd);
-extern char *trace_get_console_buffer(void);
-extern void trace_put_console_buffer(char *buffer);
+ return tcd;
+}
-extern void trace_call_on_all_cpus(void (*fn)(void *arg), void *arg);
+static inline void cfs_trace_put_tcd(struct cfs_trace_cpu_data *tcd)
+{
+ cfs_trace_unlock_tcd(tcd, 0);
+ put_cpu();
+}
-int trace_refill_stock(struct trace_cpu_data *tcd, int gfp,
- struct list_head *stock);
+int cfs_trace_refill_stock(struct cfs_trace_cpu_data *tcd, gfp_t gfp,
+ struct list_head *stock);
-int tcd_owns_tage(struct trace_cpu_data *tcd, struct trace_page *tage);
+int cfs_tcd_owns_tage(struct cfs_trace_cpu_data *tcd,
+ struct cfs_trace_page *tage);
-extern void trace_assertion_failed(const char *str, const char *fn,
- const char *file, int line);
+extern void cfs_trace_assertion_failed(const char *str,
+ struct libcfs_debug_msg_data *m);
/* ASSERTION that is safe to use within the debug system */
-#define __LASSERT(cond) \
-({ \
- if (unlikely(!(cond))) { \
- trace_assertion_failed("ASSERTION("#cond") failed", \
- __FUNCTION__, __FILE__, __LINE__); \
- } \
-})
-
-#define __LASSERT_TAGE_INVARIANT(tage) \
-({ \
- __LASSERT(tage != NULL); \
- __LASSERT(tage->page != NULL); \
- __LASSERT(tage->used <= CFS_PAGE_SIZE); \
- __LASSERT(cfs_page_count(tage->page) > 0); \
-})
+#define __LASSERT(cond) \
+do { \
+ if (unlikely(!(cond))) { \
+ LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_EMERG, NULL); \
+ cfs_trace_assertion_failed("ASSERTION("#cond") failed", \
+ &msgdata); \
+ } \
+} while (0)
+
+#define __LASSERT_TAGE_INVARIANT(tage) \
+do { \
+ __LASSERT(tage != NULL); \
+ __LASSERT(tage->page != NULL); \
+ __LASSERT(tage->used <= PAGE_SIZE); \
+ __LASSERT(page_count(tage->page) > 0); \
+} while (0)
#endif /* LUSTRE_TRACEFILE_PRIVATE */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff