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From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Steven Rostedt <rostedt@goodmis.org>
Subject: [PATCH 5/5] ring-buffer: Remove unused macro RB_TIMESTAMPS_PER_PAGE
Date: Tue, 19 Oct 2010 13:54:37 -0400	[thread overview]
Message-ID: <20101019194204.680033652@goodmis.org> (raw)
In-Reply-To: 20101019175432.854431527@goodmis.org

[-- Attachment #1: 0005-ring-buffer-Remove-unused-macro-RB_TIMESTAMPS_PER_PA.patch --]
[-- Type: text/plain, Size: 883 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

With the binding of time extends to events we no longer need to use
the macro RB_TIMESTAMPS_PER_PAGE. Remove it.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 kernel/trace/ring_buffer.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index fda009a..bd31d97 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -448,9 +448,6 @@ static inline int test_time_stamp(u64 delta)
 /* Max payload is BUF_PAGE_SIZE - header (8bytes) */
 #define BUF_MAX_DATA_SIZE (BUF_PAGE_SIZE - (sizeof(u32) * 2))
 
-/* Max number of timestamps that can fit on a page */
-#define RB_TIMESTAMPS_PER_PAGE	(BUF_PAGE_SIZE / RB_LEN_TIME_EXTEND)
-
 int ring_buffer_print_page_header(struct trace_seq *s)
 {
 	struct buffer_data_page field;
-- 
1.7.1



      parent reply	other threads:[~2010-10-19 19:42 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-19 17:54 [PATCH 0/5] [GIT PULL] ring-buffer: Various optimizations Steven Rostedt
2010-10-19 17:54 ` [PATCH 1/5] ring-buffer: Make write slow path out of line Steven Rostedt
2010-10-19 17:54 ` [PATCH 2/5] ring-buffer: Bind time extend and data events together Steven Rostedt
2010-10-19 20:46   ` Thomas Gleixner
2010-10-20 13:06     ` Steven Rostedt
2010-10-19 17:54 ` [PATCH 3/5] ring-buffer: Remove condition to add timestamp in fast path Steven Rostedt
2010-10-19 17:54 ` [PATCH 4/5] ring-buffer: Micro-optimize with some strategic inlining Steven Rostedt
2010-10-19 17:54 ` Steven Rostedt [this message]

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