On Mon, Oct 21, 2024 at 01:07:06PM +0800, Jason Xing wrote:
From: Jason Xing kernelxing@tencent.com
When I compiled the tools/testing/selftests/bpf, the following error pops out: uprobe_multi.c: In function ‘trigger_uprobe’: uprobe_multi.c:109:26: error: ‘MADV_PAGEOUT’ undeclared (first use in this function); did you mean ‘MADV_RANDOM’? madvise(addr, page_sz, MADV_PAGEOUT); ^~~~~~~~~~~~ MADV_RANDOM
Including the <linux/linux/mman.h> header file solves this compilation error.
hi, strange, uprobe_multi.c even has:
#ifndef MADV_PAGEOUT #define MADV_PAGEOUT 21 #endif
and '#include <sys/mman.h>' should be all that's needed
could you please share more details (extra flags) on how you compile?
thanks, jirka
Signed-off-by: Jason Xing kernelxing@tencent.com
v2 Link: https://lore.kernel.org/all/20241020031422.46894-1-kerneljasonxing@gmail.com...
- handle it in a proper way
tools/testing/selftests/bpf/uprobe_multi.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/bpf/uprobe_multi.c b/tools/testing/selftests/bpf/uprobe_multi.c index c7828b13e5ff..40231f02b95d 100644 --- a/tools/testing/selftests/bpf/uprobe_multi.c +++ b/tools/testing/selftests/bpf/uprobe_multi.c @@ -4,6 +4,7 @@ #include <string.h> #include <stdbool.h> #include <stdint.h> +#include <linux/mman.h> #include <sys/mman.h> #include <unistd.h>
#include <sdt.h>
2.37.3