linux/arch/um/include/asm/xor.h

/* SPDX-License-Identifier: GPL-2.0 */
#include <asm-generic/xor.h>
#include <shared/timer-internal.h>

/* pick an arbitrary one - measuring isn't possible with inf-cpu */
#define XOR_SELECT_TEMPLATE(x)	\
	(time_travel_mode == TT_MODE_INFCPU ? &xor_block_8regs : NULL)
um: Fix time-travel=inf-cpu with xor/raid6 Today, I erroneously built a time-travel configuration with btrfs enabled, and noticed it cannot boot in time-travel=inf-cpu mode, both xor and raid6 speed measurement gets stuck. For xor, work around it by picking the first algorithm if inf-cpu mode is enabled. For raid6, I didn't find such a workaround, so disallow enabling time-travel mode if RAID6_PQ_BENCHMARK is enabled. With this, and RAID6_PQ_BENCHMARK disabled, I can boot a kernel that has btrfs enabled in time-travel=inf-cpu mode. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at> 2019-12-13 10:01:28 +01:00			`/* SPDX-License-Identifier: GPL-2.0 */`
			`#include <asm-generic/xor.h>`
			`#include <shared/timer-internal.h>`

			`/* pick an arbitrary one - measuring isn't possible with inf-cpu */`
			`#define XOR_SELECT_TEMPLATE(x) \`
			`(time_travel_mode == TT_MODE_INFCPU ? &xor_block_8regs : NULL)`