#include <linux/list.h>
#include <linux/printk.h>
#include <linux/ratelimit.h>
-#include <linux/seq_file.h>
#include <linux/slab.h>
-#include <linux/vmalloc.h>
+#include <linux/mm.h>
#include "gcov.h"
typedef void (*llvm_gcov_callback)(void);
u32 ident;
u32 checksum;
-#if CONFIG_CLANG_VERSION < 110000
- u8 use_extra_checksum;
-#endif
u32 cfg_checksum;
u32 num_counters;
u64 *counters;
-#if CONFIG_CLANG_VERSION < 110000
- const char *function_name;
-#endif
};
static struct gcov_info *current_info;
}
EXPORT_SYMBOL(llvm_gcov_init);
-#if CONFIG_CLANG_VERSION < 110000
-void llvm_gcda_start_file(const char *orig_filename, const char version[4],
- u32 checksum)
-{
- current_info->filename = orig_filename;
- memcpy(¤t_info->version, version, sizeof(current_info->version));
- current_info->checksum = checksum;
-}
-EXPORT_SYMBOL(llvm_gcda_start_file);
-#else
void llvm_gcda_start_file(const char *orig_filename, u32 version, u32 checksum)
{
current_info->filename = orig_filename;
current_info->checksum = checksum;
}
EXPORT_SYMBOL(llvm_gcda_start_file);
-#endif
-
-#if CONFIG_CLANG_VERSION < 110000
-void llvm_gcda_emit_function(u32 ident, const char *function_name,
- u32 func_checksum, u8 use_extra_checksum, u32 cfg_checksum)
-{
- struct gcov_fn_info *info = kzalloc(sizeof(*info), GFP_KERNEL);
-
- if (!info)
- return;
-
- INIT_LIST_HEAD(&info->head);
- info->ident = ident;
- info->checksum = func_checksum;
- info->use_extra_checksum = use_extra_checksum;
- info->cfg_checksum = cfg_checksum;
- if (function_name)
- info->function_name = kstrdup(function_name, GFP_KERNEL);
- list_add_tail(&info->head, ¤t_info->functions);
-}
-#else
void llvm_gcda_emit_function(u32 ident, u32 func_checksum, u32 cfg_checksum)
{
struct gcov_fn_info *info = kzalloc(sizeof(*info), GFP_KERNEL);
info->cfg_checksum = cfg_checksum;
list_add_tail(&info->head, ¤t_info->functions);
}
-#endif
EXPORT_SYMBOL(llvm_gcda_emit_function);
void llvm_gcda_emit_arcs(u32 num_counters, u64 *counters)
!list_is_last(&fn_ptr2->head, &info2->functions)) {
if (fn_ptr1->checksum != fn_ptr2->checksum)
return false;
-#if CONFIG_CLANG_VERSION < 110000
- if (fn_ptr1->use_extra_checksum != fn_ptr2->use_extra_checksum)
- return false;
- if (fn_ptr1->use_extra_checksum &&
- fn_ptr1->cfg_checksum != fn_ptr2->cfg_checksum)
- return false;
-#else
if (fn_ptr1->cfg_checksum != fn_ptr2->cfg_checksum)
return false;
-#endif
fn_ptr1 = list_next_entry(fn_ptr1, head);
fn_ptr2 = list_next_entry(fn_ptr2, head);
}
}
}
-#if CONFIG_CLANG_VERSION < 110000
-static struct gcov_fn_info *gcov_fn_info_dup(struct gcov_fn_info *fn)
-{
- size_t cv_size; /* counter values size */
- struct gcov_fn_info *fn_dup = kmemdup(fn, sizeof(*fn),
- GFP_KERNEL);
- if (!fn_dup)
- return NULL;
- INIT_LIST_HEAD(&fn_dup->head);
-
- fn_dup->function_name = kstrdup(fn->function_name, GFP_KERNEL);
- if (!fn_dup->function_name)
- goto err_name;
-
- cv_size = fn->num_counters * sizeof(fn->counters[0]);
- fn_dup->counters = vmalloc(cv_size);
- if (!fn_dup->counters)
- goto err_counters;
- memcpy(fn_dup->counters, fn->counters, cv_size);
-
- return fn_dup;
-
-err_counters:
- kfree(fn_dup->function_name);
-err_name:
- kfree(fn_dup);
- return NULL;
-}
-#else
static struct gcov_fn_info *gcov_fn_info_dup(struct gcov_fn_info *fn)
{
size_t cv_size; /* counter values size */
INIT_LIST_HEAD(&fn_dup->head);
cv_size = fn->num_counters * sizeof(fn->counters[0]);
- fn_dup->counters = vmalloc(cv_size);
+ fn_dup->counters = kvmalloc(cv_size, GFP_KERNEL);
if (!fn_dup->counters) {
kfree(fn_dup);
return NULL;
return fn_dup;
}
-#endif
/**
* gcov_info_dup - duplicate profiling data set
* gcov_info_free - release memory for profiling data set duplicate
* @info: profiling data set duplicate to free
*/
-#if CONFIG_CLANG_VERSION < 110000
-void gcov_info_free(struct gcov_info *info)
-{
- struct gcov_fn_info *fn, *tmp;
-
- list_for_each_entry_safe(fn, tmp, &info->functions, head) {
- kfree(fn->function_name);
- vfree(fn->counters);
- list_del(&fn->head);
- kfree(fn);
- }
- kfree(info->filename);
- kfree(info);
-}
-#else
void gcov_info_free(struct gcov_info *info)
{
struct gcov_fn_info *fn, *tmp;
list_for_each_entry_safe(fn, tmp, &info->functions, head) {
- vfree(fn->counters);
+ kvfree(fn->counters);
list_del(&fn->head);
kfree(fn);
}
kfree(info->filename);
kfree(info);
}
-#endif
-
-#define ITER_STRIDE PAGE_SIZE
-
-/**
- * struct gcov_iterator - specifies current file position in logical records
- * @info: associated profiling data
- * @buffer: buffer containing file data
- * @size: size of buffer
- * @pos: current position in file
- */
-struct gcov_iterator {
- struct gcov_info *info;
- void *buffer;
- size_t size;
- loff_t pos;
-};
-
-/**
- * store_gcov_u32 - store 32 bit number in gcov format to buffer
- * @buffer: target buffer or NULL
- * @off: offset into the buffer
- * @v: value to be stored
- *
- * Number format defined by gcc: numbers are recorded in the 32 bit
- * unsigned binary form of the endianness of the machine generating the
- * file. Returns the number of bytes stored. If @buffer is %NULL, doesn't
- * store anything.
- */
-static size_t store_gcov_u32(void *buffer, size_t off, u32 v)
-{
- u32 *data;
-
- if (buffer) {
- data = buffer + off;
- *data = v;
- }
-
- return sizeof(*data);
-}
-
-/**
- * store_gcov_u64 - store 64 bit number in gcov format to buffer
- * @buffer: target buffer or NULL
- * @off: offset into the buffer
- * @v: value to be stored
- *
- * Number format defined by gcc: numbers are recorded in the 32 bit
- * unsigned binary form of the endianness of the machine generating the
- * file. 64 bit numbers are stored as two 32 bit numbers, the low part
- * first. Returns the number of bytes stored. If @buffer is %NULL, doesn't store
- * anything.
- */
-static size_t store_gcov_u64(void *buffer, size_t off, u64 v)
-{
- u32 *data;
-
- if (buffer) {
- data = buffer + off;
-
- data[0] = (v & 0xffffffffUL);
- data[1] = (v >> 32);
- }
-
- return sizeof(*data) * 2;
-}
/**
* convert_to_gcda - convert profiling data set to gcda file format
*
* Returns the number of bytes that were/would have been stored into the buffer.
*/
-static size_t convert_to_gcda(char *buffer, struct gcov_info *info)
+size_t convert_to_gcda(char *buffer, struct gcov_info *info)
{
struct gcov_fn_info *fi_ptr;
size_t pos = 0;
u32 i;
pos += store_gcov_u32(buffer, pos, GCOV_TAG_FUNCTION);
-#if CONFIG_CLANG_VERSION < 110000
- pos += store_gcov_u32(buffer, pos,
- fi_ptr->use_extra_checksum ? 3 : 2);
-#else
pos += store_gcov_u32(buffer, pos, 3);
-#endif
pos += store_gcov_u32(buffer, pos, fi_ptr->ident);
pos += store_gcov_u32(buffer, pos, fi_ptr->checksum);
-#if CONFIG_CLANG_VERSION < 110000
- if (fi_ptr->use_extra_checksum)
- pos += store_gcov_u32(buffer, pos, fi_ptr->cfg_checksum);
-#else
pos += store_gcov_u32(buffer, pos, fi_ptr->cfg_checksum);
-#endif
-
pos += store_gcov_u32(buffer, pos, GCOV_TAG_COUNTER_BASE);
pos += store_gcov_u32(buffer, pos, fi_ptr->num_counters * 2);
for (i = 0; i < fi_ptr->num_counters; i++)
return pos;
}
-
-/**
- * gcov_iter_new - allocate and initialize profiling data iterator
- * @info: profiling data set to be iterated
- *
- * Return file iterator on success, %NULL otherwise.
- */
-struct gcov_iterator *gcov_iter_new(struct gcov_info *info)
-{
- struct gcov_iterator *iter;
-
- iter = kzalloc(sizeof(struct gcov_iterator), GFP_KERNEL);
- if (!iter)
- goto err_free;
-
- iter->info = info;
- /* Dry-run to get the actual buffer size. */
- iter->size = convert_to_gcda(NULL, info);
- iter->buffer = vmalloc(iter->size);
- if (!iter->buffer)
- goto err_free;
-
- convert_to_gcda(iter->buffer, info);
-
- return iter;
-
-err_free:
- kfree(iter);
- return NULL;
-}
-
-
-/**
- * gcov_iter_get_info - return profiling data set for given file iterator
- * @iter: file iterator
- */
-void gcov_iter_free(struct gcov_iterator *iter)
-{
- vfree(iter->buffer);
- kfree(iter);
-}
-
-/**
- * gcov_iter_get_info - return profiling data set for given file iterator
- * @iter: file iterator
- */
-struct gcov_info *gcov_iter_get_info(struct gcov_iterator *iter)
-{
- return iter->info;
-}
-
-/**
- * gcov_iter_start - reset file iterator to starting position
- * @iter: file iterator
- */
-void gcov_iter_start(struct gcov_iterator *iter)
-{
- iter->pos = 0;
-}
-
-/**
- * gcov_iter_next - advance file iterator to next logical record
- * @iter: file iterator
- *
- * Return zero if new position is valid, non-zero if iterator has reached end.
- */
-int gcov_iter_next(struct gcov_iterator *iter)
-{
- if (iter->pos < iter->size)
- iter->pos += ITER_STRIDE;
-
- if (iter->pos >= iter->size)
- return -EINVAL;
-
- return 0;
-}
-
-/**
- * gcov_iter_write - write data for current pos to seq_file
- * @iter: file iterator
- * @seq: seq_file handle
- *
- * Return zero on success, non-zero otherwise.
- */
-int gcov_iter_write(struct gcov_iterator *iter, struct seq_file *seq)
-{
- size_t len;
-
- if (iter->pos >= iter->size)
- return -EINVAL;
-
- len = ITER_STRIDE;
- if (iter->pos + len > iter->size)
- len = iter->size - iter->pos;
-
- seq_write(seq, iter->buffer + iter->pos, len);
-
- return 0;
-}
projects / linux-2.6-microblaze.git / blobdiff