c37511b863
The tracepoints were reworked to be more sensible, and fixed a null pointer deref in one of the tracepoints. Converted some of the pr_debug()s to tracepoints - this is partly a performance optimization; it used to be that with DEBUG or CONFIG_DYNAMIC_DEBUG pr_debug() was an empty macro; but at some point it was changed to an empty inline function. Some of the pr_debug() statements had rather expensive function calls as part of the arguments, so this code was getting run unnecessarily even on non debug kernels - in some fast paths, too. Signed-off-by: Kent Overstreet <koverstreet@google.com>
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
#include "bcache.h"
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#include "btree.h"
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#include "request.h"
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#include <linux/blktrace_api.h>
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#include <linux/module.h>
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#define CREATE_TRACE_POINTS
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#include <trace/events/bcache.h>
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_request_start);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_request_end);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_bypass_sequential);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_bypass_congested);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_read);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_write);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_read_retry);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_cache_insert);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_journal_replay_key);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_journal_write);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_journal_full);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_journal_entry_full);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_cache_cannibalize);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_read);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_write);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_node_alloc);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_node_alloc_fail);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_node_free);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_gc_coalesce);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_gc_start);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_gc_end);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_gc_copy);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_gc_copy_collision);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_node_split);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_node_compact);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_set_root);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_alloc_invalidate);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_alloc_fail);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_writeback);
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EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_writeback_collision);
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