/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/linux
Edit: /usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/linux/stringify.h (341B)
#ifndef __LINUX_STRINGIFY_H
#define __LINUX_STRINGIFY_H
/* Indirect stringification. Doing two levels allows the parameter to be a
* macro itself. For example, compile with -DFOO=bar, __stringify(FOO)
* converts to "bar".
*/
#define __stringify_1(x...) #x
#define __stringify(x...) __stringify_1(x)
#endif /* !__LINUX_STRINGIFY_H */