diff options
Diffstat (limited to 'kernel/gcov')
| -rw-r--r-- | kernel/gcov/Makefile | 4 | ||||
| -rw-r--r-- | kernel/gcov/base.c | 84 | ||||
| -rw-r--r-- | kernel/gcov/gcc_base.c | 86 | ||||
| -rw-r--r-- | kernel/gcov/gcov.h | 3 |
4 files changed, 93 insertions, 84 deletions
diff --git a/kernel/gcov/Makefile b/kernel/gcov/Makefile index ff06d64df397..45431ed679d1 100644 --- a/kernel/gcov/Makefile +++ b/kernel/gcov/Makefile @@ -2,5 +2,5 @@ ccflags-y := -DSRCTREE='"$(srctree)"' -DOBJTREE='"$(objtree)"' obj-y := base.o fs.o -obj-$(CONFIG_GCOV_FORMAT_3_4) += gcc_3_4.o -obj-$(CONFIG_GCOV_FORMAT_4_7) += gcc_4_7.o +obj-$(CONFIG_GCOV_FORMAT_3_4) += gcc_base.o gcc_3_4.o +obj-$(CONFIG_GCOV_FORMAT_4_7) += gcc_base.o gcc_4_7.o diff --git a/kernel/gcov/base.c b/kernel/gcov/base.c index 9c7c8d5c18f2..799d42072727 100644 --- a/kernel/gcov/base.c +++ b/kernel/gcov/base.c @@ -22,88 +22,8 @@ #include <linux/sched.h> #include "gcov.h" -static int gcov_events_enabled; -static DEFINE_MUTEX(gcov_lock); - -/* - * __gcov_init is called by gcc-generated constructor code for each object - * file compiled with -fprofile-arcs. - */ -void __gcov_init(struct gcov_info *info) -{ - static unsigned int gcov_version; - - mutex_lock(&gcov_lock); - if (gcov_version == 0) { - gcov_version = gcov_info_version(info); - /* - * Printing gcc's version magic may prove useful for debugging - * incompatibility reports. - */ - pr_info("version magic: 0x%x\n", gcov_version); - } - /* - * Add new profiling data structure to list and inform event - * listener. - */ - gcov_info_link(info); - if (gcov_events_enabled) - gcov_event(GCOV_ADD, info); - mutex_unlock(&gcov_lock); -} -EXPORT_SYMBOL(__gcov_init); - -/* - * These functions may be referenced by gcc-generated profiling code but serve - * no function for kernel profiling. - */ -void __gcov_flush(void) -{ - /* Unused. */ -} -EXPORT_SYMBOL(__gcov_flush); - -void __gcov_merge_add(gcov_type *counters, unsigned int n_counters) -{ - /* Unused. */ -} -EXPORT_SYMBOL(__gcov_merge_add); - -void __gcov_merge_single(gcov_type *counters, unsigned int n_counters) -{ - /* Unused. */ -} -EXPORT_SYMBOL(__gcov_merge_single); - -void __gcov_merge_delta(gcov_type *counters, unsigned int n_counters) -{ - /* Unused. */ -} -EXPORT_SYMBOL(__gcov_merge_delta); - -void __gcov_merge_ior(gcov_type *counters, unsigned int n_counters) -{ - /* Unused. */ -} -EXPORT_SYMBOL(__gcov_merge_ior); - -void __gcov_merge_time_profile(gcov_type *counters, unsigned int n_counters) -{ - /* Unused. */ -} -EXPORT_SYMBOL(__gcov_merge_time_profile); - -void __gcov_merge_icall_topn(gcov_type *counters, unsigned int n_counters) -{ - /* Unused. */ -} -EXPORT_SYMBOL(__gcov_merge_icall_topn); - -void __gcov_exit(void) -{ - /* Unused. */ -} -EXPORT_SYMBOL(__gcov_exit); +int gcov_events_enabled; +DEFINE_MUTEX(gcov_lock); /** * gcov_enable_events - enable event reporting through gcov_event() diff --git a/kernel/gcov/gcc_base.c b/kernel/gcov/gcc_base.c new file mode 100644 index 000000000000..3cf736b9f880 --- /dev/null +++ b/kernel/gcov/gcc_base.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/export.h> +#include <linux/kernel.h> +#include <linux/mutex.h> +#include "gcov.h" + +/* + * __gcov_init is called by gcc-generated constructor code for each object + * file compiled with -fprofile-arcs. + */ +void __gcov_init(struct gcov_info *info) +{ + static unsigned int gcov_version; + + mutex_lock(&gcov_lock); + if (gcov_version == 0) { + gcov_version = gcov_info_version(info); + /* + * Printing gcc's version magic may prove useful for debugging + * incompatibility reports. + */ + pr_info("version magic: 0x%x\n", gcov_version); + } + /* + * Add new profiling data structure to list and inform event + * listener. + */ + gcov_info_link(info); + if (gcov_events_enabled) + gcov_event(GCOV_ADD, info); + mutex_unlock(&gcov_lock); +} +EXPORT_SYMBOL(__gcov_init); + +/* + * These functions may be referenced by gcc-generated profiling code but serve + * no function for kernel profiling. + */ +void __gcov_flush(void) +{ + /* Unused. */ +} +EXPORT_SYMBOL(__gcov_flush); + +void __gcov_merge_add(gcov_type *counters, unsigned int n_counters) +{ + /* Unused. */ +} +EXPORT_SYMBOL(__gcov_merge_add); + +void __gcov_merge_single(gcov_type *counters, unsigned int n_counters) +{ + /* Unused. */ +} +EXPORT_SYMBOL(__gcov_merge_single); + +void __gcov_merge_delta(gcov_type *counters, unsigned int n_counters) +{ + /* Unused. */ +} +EXPORT_SYMBOL(__gcov_merge_delta); + +void __gcov_merge_ior(gcov_type *counters, unsigned int n_counters) +{ + /* Unused. */ +} +EXPORT_SYMBOL(__gcov_merge_ior); + +void __gcov_merge_time_profile(gcov_type *counters, unsigned int n_counters) +{ + /* Unused. */ +} +EXPORT_SYMBOL(__gcov_merge_time_profile); + +void __gcov_merge_icall_topn(gcov_type *counters, unsigned int n_counters) +{ + /* Unused. */ +} +EXPORT_SYMBOL(__gcov_merge_icall_topn); + +void __gcov_exit(void) +{ + /* Unused. */ +} +EXPORT_SYMBOL(__gcov_exit); diff --git a/kernel/gcov/gcov.h b/kernel/gcov/gcov.h index de118ad4a024..0ecf1d664ec3 100644 --- a/kernel/gcov/gcov.h +++ b/kernel/gcov/gcov.h @@ -83,4 +83,7 @@ struct gcov_link { }; extern const struct gcov_link gcov_link[]; +extern int gcov_events_enabled; +extern struct mutex gcov_lock; + #endif /* GCOV_H */ |