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selftests/bpf: Refactor trace helper func load_kallsyms_local()

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Refactor trace helper function load_kallsyms_local() such that
it invokes a common function with a compare function as input.
The common function will be used later for other local functions.

Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20240326041508.1199239-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Yonghong Song 2024-03-25 21:15:08 -07:00 committed by Alexei Starovoitov
parent d132064934
commit 9475dacb75
2 changed files with 14 additions and 7 deletions
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19
tools/testing/selftests/bpf/trace_helpers.c
View File

@ -61,12 +61,7 @@ void free_kallsyms_local(struct ksyms *ksyms)
free(ksyms);
}
static int ksym_cmp(const void *p1, const void *p2)
{
return ((struct ksym *)p1)->addr - ((struct ksym *)p2)->addr;
}
struct ksyms *load_kallsyms_local(void)
static struct ksyms *load_kallsyms_local_common(ksym_cmp_t cmp_cb)
{
FILE *f;
char func[256], buf[256];
@ -100,7 +95,7 @@ struct ksyms *load_kallsyms_local(void)
goto error;
}
fclose(f);
qsort(ksyms->syms, ksyms->sym_cnt, sizeof(struct ksym), ksym_cmp);
qsort(ksyms->syms, ksyms->sym_cnt, sizeof(struct ksym), cmp_cb);
return ksyms;
error:
@ -109,6 +104,16 @@ struct ksyms *load_kallsyms_local(void)
return NULL;
}
static int ksym_cmp(const void *p1, const void *p2)
{
return ((struct ksym *)p1)->addr - ((struct ksym *)p2)->addr;
}
struct ksyms *load_kallsyms_local(void)
{
return load_kallsyms_local_common(ksym_cmp);
}
int load_kallsyms(void)
{
pthread_mutex_lock(&ksyms_mutex);

2
tools/testing/selftests/bpf/trace_helpers.h
View File

@ -13,6 +13,8 @@ struct ksym {
};
struct ksyms;
typedef int (*ksym_cmp_t)(const void *p1, const void *p2);
int load_kallsyms(void);
struct ksym *ksym_search(long key);
long ksym_get_addr(const char *name);