1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
>> 2 #include <stdio.h>
>> 3 #include "pmu.h"
2 #include "topdown.h" 4 #include "topdown.h"
3 #include <linux/kernel.h> !! 5
>> 6 int topdown_filter_events(const char **attr, char **str, bool use_group)
>> 7 {
>> 8 int off = 0;
>> 9 int i;
>> 10 int len = 0;
>> 11 char *s;
>> 12
>> 13 for (i = 0; attr[i]; i++) {
>> 14 if (pmu_have_event("cpu", attr[i])) {
>> 15 len += strlen(attr[i]) + 1;
>> 16 attr[i - off] = attr[i];
>> 17 } else
>> 18 off++;
>> 19 }
>> 20 attr[i - off] = NULL;
>> 21
>> 22 *str = malloc(len + 1 + 2);
>> 23 if (!*str)
>> 24 return -1;
>> 25 s = *str;
>> 26 if (i - off == 0) {
>> 27 *s = 0;
>> 28 return 0;
>> 29 }
>> 30 if (use_group)
>> 31 *s++ = '{';
>> 32 for (i = 0; attr[i]; i++) {
>> 33 strcpy(s, attr[i]);
>> 34 s += strlen(s);
>> 35 *s++ = ',';
>> 36 }
>> 37 if (use_group) {
>> 38 s[-1] = '}';
>> 39 *s = 0;
>> 40 } else
>> 41 s[-1] = 0;
>> 42 return 0;
>> 43 }
>> 44
>> 45 __weak bool arch_topdown_check_group(bool *warn)
>> 46 {
>> 47 *warn = false;
>> 48 return false;
>> 49 }
>> 50
>> 51 __weak void arch_topdown_group_warn(void)
>> 52 {
>> 53 }
4 54
5 __weak bool arch_topdown_sample_read(struct ev 55 __weak bool arch_topdown_sample_read(struct evsel *leader __maybe_unused)
6 { 56 {
7 return false; 57 return false;
8 } 58 }
9 59
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