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tracing: Use generic type for comparator function

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Comparator function type, cmp_func_t, is defined in the types.h,
use it in the code.

Link: http://lkml.kernel.org/r/20191007135656.37734-3-andriy.shevchenko@linux.intel.com

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Andy Shevchenko 2019-10-07 16:56:56 +03:00 committed by Steven Rostedt (VMware)
parent e8877ec5db
commit 80042c8f06
4 changed files with 13 additions and 15 deletions
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12
kernel/trace/ftrace.c
View File

@ -465,10 +465,10 @@ static void *function_stat_start(struct tracer_stat *trace)
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
/* function graph compares on total time */
static int function_stat_cmp(void *p1, void *p2)
static int function_stat_cmp(const void *p1, const void *p2)
{
struct ftrace_profile *a = p1;
struct ftrace_profile *b = p2;
const struct ftrace_profile *a = p1;
const struct ftrace_profile *b = p2;
if (a->time < b->time)
return -1;
@ -479,10 +479,10 @@ static int function_stat_cmp(void *p1, void *p2)
}
#else
/* not function graph compares against hits */
static int function_stat_cmp(void *p1, void *p2)
static int function_stat_cmp(const void *p1, const void *p2)
{
struct ftrace_profile *a = p1;
struct ftrace_profile *b = p2;
const struct ftrace_profile *a = p1;
const struct ftrace_profile *b = p2;
if (a->counter < b->counter)
return -1;

8
kernel/trace/trace_branch.c
View File

@ -244,7 +244,7 @@ static int annotated_branch_stat_headers(struct seq_file *m)
return 0;
}
static inline long get_incorrect_percent(struct ftrace_branch_data *p)
static inline long get_incorrect_percent(const struct ftrace_branch_data *p)
{
long percent;
@ -332,10 +332,10 @@ annotated_branch_stat_next(void *v, int idx)
return p;
}
static int annotated_branch_stat_cmp(void *p1, void *p2)
static int annotated_branch_stat_cmp(const void *p1, const void *p2)
{
struct ftrace_branch_data *a = p1;
struct ftrace_branch_data *b = p2;
const struct ftrace_branch_data *a = p1;
const struct ftrace_branch_data *b = p2;
long percent_a, percent_b;

6
kernel/trace/trace_stat.c
View File

@ -72,9 +72,7 @@ static void destroy_session(struct stat_session *session)
kfree(session);
}
typedef int (*cmp_stat_t)(void *, void *);
static int insert_stat(struct rb_root *root, void *stat, cmp_stat_t cmp)
static int insert_stat(struct rb_root *root, void *stat, cmp_func_t cmp)
{
struct rb_node **new = &(root->rb_node), *parent = NULL;
struct stat_node *data;
@ -112,7 +110,7 @@ static int insert_stat(struct rb_root *root, void *stat, cmp_stat_t cmp)
* This one will force an insertion as right-most node
* in the rbtree.
*/
static int dummy_cmp(void *p1, void *p2)
static int dummy_cmp(const void *p1, const void *p2)
{
return -1;
}

2
kernel/trace/trace_stat.h
View File

@ -16,7 +16,7 @@ struct tracer_stat {
void *(*stat_start)(struct tracer_stat *trace);
void *(*stat_next)(void *prev, int idx);
/* Compare two entries for stats sorting */
int (*stat_cmp)(void *p1, void *p2);
cmp_func_t stat_cmp;
/* Print a stat entry */
int (*stat_show)(struct seq_file *s, void *p);
/* Release an entry */