From c37511b863f36c1cc6e18440717fd4cc0e881b8a Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Fri, 26 Apr 2013 15:39:55 -0700 Subject: bcache: Fix/revamp tracepoints 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 --- drivers/md/bcache/trace.c | 45 +++++++++++++++++++++++++++++++++++---------- 1 file changed, 35 insertions(+), 10 deletions(-) (limited to 'drivers/md/bcache/trace.c') diff --git a/drivers/md/bcache/trace.c b/drivers/md/bcache/trace.c index 983f9bb..7f4f38a 100644 --- a/drivers/md/bcache/trace.c +++ b/drivers/md/bcache/trace.c @@ -2,6 +2,7 @@ #include "btree.h" #include "request.h" +#include #include #define CREATE_TRACE_POINTS @@ -9,18 +10,42 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_request_start); EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_request_end); -EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_passthrough); -EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_cache_hit); -EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_cache_miss); + +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_bypass_sequential); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_bypass_congested); + +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_read); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_write); EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_read_retry); -EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_writethrough); -EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_writeback); -EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_write_skip); + +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_cache_insert); + +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_journal_replay_key); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_journal_write); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_journal_full); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_journal_entry_full); + +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_cache_cannibalize); + EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_read); EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_write); -EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_write_dirty); -EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_read_dirty); -EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_journal_write); -EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_cache_insert); + +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_node_alloc); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_node_alloc_fail); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_node_free); + +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_gc_coalesce); EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_gc_start); EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_gc_end); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_gc_copy); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_gc_copy_collision); + +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_node_split); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_node_compact); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_btree_set_root); + +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_alloc_invalidate); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_alloc_fail); + +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_writeback); +EXPORT_TRACEPOINT_SYMBOL_GPL(bcache_writeback_collision); -- cgit v1.1