#include <stdio.h>
#include "api/fs/fs.h"
#include "util/group.h"
/*
* Check whether we can use a group for top down.
* Without a group may get bad results due to multiplexing.
*/
bool arch_topdown_check_group(bool *warn)
{
int n;
if (sysctl__read_int("kernel/nmi_watchdog", &n) < 0)
return false;
if (n > 0) {
*warn = true;
return false;
}
return true;
}
void arch_topdown_group_warn(void)
{
fprintf(stderr,
"nmi_watchdog enabled with topdown. May give wrong results.\n"
"Disable with echo 0 > /proc/sys/kernel/nmi_watchdog\n");
}
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