// SPDX-License-Identifier: GPL-2.0
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#include <stdio.h>
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#include "api/fs/fs.h"
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#include "util/group.h"
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/*
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* Check whether we can use a group for top down.
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* Without a group may get bad results due to multiplexing.
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*/
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bool arch_topdown_check_group(bool *warn)
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{
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int n;
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if (sysctl__read_int("kernel/nmi_watchdog", &n) < 0)
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return false;
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if (n > 0) {
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*warn = true;
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return false;
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}
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return true;
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}
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void arch_topdown_group_warn(void)
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{
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fprintf(stderr,
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"nmi_watchdog enabled with topdown. May give wrong results.\n"
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"Disable with echo 0 > /proc/sys/kernel/nmi_watchdog\n");
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}
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