| #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"); |
| } |
