A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 10:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

tracing: create automated trace defines

Browse source 
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 <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Neil Horman <[email protected]>
Cc: Zhao Lei <[email protected]>
Cc: Eduard - Gabriel Munteanu <[email protected]>
Cc: Pekka Enberg <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
This commit is contained in:
Steven Rostedt 2009-04-10 09:36:00 -04:00 • committed by Steven Rostedt
commit a8d154b009
16 changed files with 105 additions and 46 deletions
Download patch file Download diff file Expand all files Collapse all files

11
mm/util.c
View file

@ -4,9 +4,11 @@
#include <linux/module.h>
#include <linux/err.h>
#include <linux/sched.h>
#include <linux/tracepoint.h>
#include <asm/uaccess.h>
#define CREATE_TRACE_POINTS
#include <trace/kmem.h>
/**
* kstrdup - allocate space for and copy an existing string
* @s: the string to duplicate
@ -239,13 +241,6 @@ int __attribute__((weak)) get_user_pages_fast(unsigned long start,
EXPORT_SYMBOL_GPL(get_user_pages_fast);
/* Tracepoints definitions. */
DEFINE_TRACE(kmalloc);
DEFINE_TRACE(kmem_cache_alloc);
DEFINE_TRACE(kmalloc_node);
DEFINE_TRACE(kmem_cache_alloc_node);
DEFINE_TRACE(kfree);
DEFINE_TRACE(kmem_cache_free);
EXPORT_TRACEPOINT_SYMBOL(kmalloc);
EXPORT_TRACEPOINT_SYMBOL(kmem_cache_alloc);
EXPORT_TRACEPOINT_SYMBOL(kmalloc_node);