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| author | Steven Rostedt <srostedt@redhat.com> | 2009-04-10 09:36:00 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2009-04-14 12:57:28 -0400 |
| commit | a8d154b009168337494fbf345671bab74d3e4b8b (patch) | |
| tree | 4097612e1a5cc8bf7658542f7d0f51b815113eaf /net/core | |
| parent | ea20d9293ce423a39717ed4375393129a2e701f9 (diff) | |
| download | kernel_samsung_crespo-a8d154b009168337494fbf345671bab74d3e4b8b.zip kernel_samsung_crespo-a8d154b009168337494fbf345671bab74d3e4b8b.tar.gz kernel_samsung_crespo-a8d154b009168337494fbf345671bab74d3e4b8b.tar.bz2 | |
tracing: create automated trace defines
This patch lowers the number of places a developer must modify to add
new tracepoints. The current method to add a new tracepoint
into an existing system is to write the trace point macro in the
trace header with one of the macros TRACE_EVENT, TRACE_FORMAT or
DECLARE_TRACE, then they must add the same named item into the C file
with the macro DEFINE_TRACE(name) and then add the trace point.
This change cuts out the needing to add the DEFINE_TRACE(name).
Every file that uses the tracepoint must still include the trace/<type>.h
file, but the one C file must also add a define before the including
of that file.
#define CREATE_TRACE_POINTS
#include <trace/mytrace.h>
This will cause the trace/mytrace.h file to also produce the C code
necessary to implement the trace point.
Note, if more than one trace/<type>.h is used to create the C code
it is best to list them all together.
#define CREATE_TRACE_POINTS
#include <trace/foo.h>
#include <trace/bar.h>
#include <trace/fido.h>
Thanks to Mathieu Desnoyers and Christoph Hellwig for coming up with
the cleaner solution of the define above the includes over my first
design to have the C code include a "special" header.
This patch converts sched, irq and lockdep and skb to use this new
method.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Zhao Lei <zhaolei@cn.fujitsu.com>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/net-traces.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/core/net-traces.c b/net/core/net-traces.c index c8fb456..8017720 100644 --- a/net/core/net-traces.c +++ b/net/core/net-traces.c @@ -19,11 +19,11 @@ #include <linux/workqueue.h> #include <linux/netlink.h> #include <linux/net_dropmon.h> -#include <trace/skb.h> #include <asm/unaligned.h> #include <asm/bitops.h> +#define CREATE_TRACE_POINTS +#include <trace/skb.h> -DEFINE_TRACE(kfree_skb); EXPORT_TRACEPOINT_SYMBOL_GPL(kfree_skb); |