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Diffstat (limited to 'include/spl-trace.h')
| -rw-r--r-- | include/spl-trace.h | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/include/spl-trace.h b/include/spl-trace.h deleted file mode 100644 index 8ef173e76..000000000 --- a/include/spl-trace.h +++ /dev/null @@ -1,132 +0,0 @@ -/*****************************************************************************\ - * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. - * Copyright (C) 2007 The Regents of the University of California. - * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). - * Written by Brian Behlendorf <[email protected]>. - * UCRL-CODE-235197 - * - * This file is part of the SPL, Solaris Porting Layer. - * For details, see <http://zfsonlinux.org/>. - * - * The SPL is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * The SPL 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 the SPL. If not, see <http://www.gnu.org/licenses/>. -\*****************************************************************************/ - -#ifndef _SPL_TRACE_H -#define _SPL_TRACE_H - -#define TCD_MAX_PAGES (5 << (20 - PAGE_SHIFT)) -#define TCD_STOCK_PAGES (TCD_MAX_PAGES) -#define TRACE_CONSOLE_BUFFER_SIZE 1024 - -#define SPL_DEFAULT_MAX_DELAY (600 * HZ) -#define SPL_DEFAULT_MIN_DELAY ((HZ + 1) / 2) -#define SPL_DEFAULT_BACKOFF 2 - -#define DL_NOTHREAD 0x0001 /* Do not create a new thread */ -#define DL_SINGLE_CPU 0x0002 /* Collect pages from this CPU*/ - -typedef struct dumplog_priv { - wait_queue_head_t dp_waitq; - pid_t dp_pid; - int dp_flags; - atomic_t dp_done; -} dumplog_priv_t; - -/* Three trace data types */ -typedef enum { - TCD_TYPE_PROC, - TCD_TYPE_SOFTIRQ, - TCD_TYPE_IRQ, - TCD_TYPE_MAX -} tcd_type_t; - -union trace_data_union { - struct trace_cpu_data { - /* pages with trace records not yet processed by tracefiled */ - struct list_head tcd_pages; - /* number of pages on ->tcd_pages */ - unsigned long tcd_cur_pages; - /* Max number of pages allowed on ->tcd_pages */ - unsigned long tcd_max_pages; - - /* - * preallocated pages to write trace records into. Pages from - * ->tcd_stock_pages are moved to ->tcd_pages by spl_debug_msg(). - * - * This list is necessary, because on some platforms it's - * impossible to perform efficient atomic page allocation in a - * non-blockable context. - * - * Such platforms fill ->tcd_stock_pages "on occasion", when - * tracing code is entered in blockable context. - * - * trace_get_tage_try() tries to get a page from - * ->tcd_stock_pages first and resorts to atomic page - * allocation only if this queue is empty. ->tcd_stock_pages - * is replenished when tracing code is entered in blocking - * context (darwin-tracefile.c:trace_get_tcd()). We try to - * maintain TCD_STOCK_PAGES (40 by default) pages in this - * queue. Atomic allocation is only required if more than - * 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; - /* number of pages on ->tcd_stock_pages */ - unsigned long tcd_cur_stock_pages; - - unsigned short tcd_shutting_down; - unsigned short tcd_cpu; - unsigned short tcd_type; - /* The factors to share debug memory. */ - unsigned short tcd_pages_factor; - - /* - * This spinlock is needed to workaround the problem of - * set_cpus_allowed() being GPL-only. Since we cannot - * schedule a thread on a specific CPU when dumping the - * pages, we must use the spinlock for mutual exclusion. - */ - spinlock_t tcd_lock; - unsigned long tcd_lock_flags; - } tcd; - char __pad[L1_CACHE_ALIGN(sizeof(struct trace_cpu_data))]; -}; - -extern union trace_data_union (*trace_data[TCD_TYPE_MAX])[NR_CPUS]; - -#define tcd_for_each(tcd, i, j) \ - for (i = 0; i < TCD_TYPE_MAX && trace_data[i]; i++) \ - for (j = 0, ((tcd) = &(*trace_data[i])[j].tcd); \ - j < num_possible_cpus(); j++, (tcd) = &(*trace_data[i])[j].tcd) - -#define tcd_for_each_type_lock(tcd, i, cpu) \ - for (i = 0; i < TCD_TYPE_MAX && trace_data[i] && \ - (tcd = &(*trace_data[i])[cpu].tcd) && \ - trace_lock_tcd(tcd); trace_unlock_tcd(tcd), i++) - -struct trace_page { - struct page *page; /* page itself */ - struct list_head linkage; /* Used by trace_data_union */ - unsigned int used; /* number of bytes used within this page */ - unsigned short cpu; /* cpu that owns this page */ - unsigned short type; /* type(context) of this page */ -}; - -struct page_collection { - struct list_head pc_pages; - spinlock_t pc_lock; - int pc_want_daemon_pages; -}; - -#endif /* SPL_TRACE_H */ |