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gcov: move gcov structs definitions to a gcc version specific file

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Since also the gcov structures(gcov_info, gcov_fn_info, gcov_ctr_info) can
change between gcc releases, as shown in gcc 4.7, they cannot be defined
in a common header and need to be moved to a specific gcc implemention
file.  This also requires to make the gcov_info structure opaque for the
common code and to introduce simple helpers for accessing data inside
gcov_info.

Signed-off-by: Frantisek Hrbata <fhrbata@redhat.com>
Cc: Jan Stancek <jstancek@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Acked-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Andy Gospodarek <agospoda@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Frantisek Hrbata
2013-11-12 15:11:24 -08:00
committed by Linus Torvalds
parent 0d20633b04
commit 8cbce376e3
4 changed files with 153 additions and 80 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
kernel/gcov/base.c
View File

@@ -20,7 +20,6 @@
#include <linux/mutex.h>
#include "gcov.h"
static struct gcov_info *gcov_info_head;
static int gcov_events_enabled;
static DEFINE_MUTEX(gcov_lock);
@@ -34,7 +33,7 @@ void __gcov_init(struct gcov_info *info)
mutex_lock(&gcov_lock);
if (gcov_version == 0) {
gcov_version = info->version;
gcov_version = gcov_info_version(info);
/*
* Printing gcc's version magic may prove useful for debugging
* incompatibility reports.
@@ -45,8 +44,7 @@ void __gcov_init(struct gcov_info *info)
* Add new profiling data structure to list and inform event
* listener.
*/
info->next = gcov_info_head;
gcov_info_head = info;
gcov_info_link(info);
if (gcov_events_enabled)
gcov_event(GCOV_ADD, info);
mutex_unlock(&gcov_lock);
@@ -91,13 +89,15 @@ EXPORT_SYMBOL(__gcov_merge_delta);
*/
void gcov_enable_events(void)
{
struct gcov_info *info;
struct gcov_info *info = NULL;
mutex_lock(&gcov_lock);
gcov_events_enabled = 1;
/* Perform event callback for previously registered entries. */
for (info = gcov_info_head; info; info = info->next)
while ((info = gcov_info_next(info)))
gcov_event(GCOV_ADD, info);
mutex_unlock(&gcov_lock);
}
@@ -112,25 +112,23 @@ static int gcov_module_notifier(struct notifier_block *nb, unsigned long event,
void *data)
{
struct module *mod = data;
struct gcov_info *info;
struct gcov_info *prev;
struct gcov_info *info = NULL;
struct gcov_info *prev = NULL;
if (event != MODULE_STATE_GOING)
return NOTIFY_OK;
mutex_lock(&gcov_lock);
prev = NULL;
/* Remove entries located in module from linked list. */
for (info = gcov_info_head; info; info = info->next) {
while ((info = gcov_info_next(info))) {
if (within(info, mod->module_core, mod->core_size)) {
if (prev)
prev->next = info->next;
else
gcov_info_head = info->next;
gcov_info_unlink(prev, info);
if (gcov_events_enabled)
gcov_event(GCOV_REMOVE, info);
} else
prev = info;
}
mutex_unlock(&gcov_lock);
return NOTIFY_OK;