kernel-ark/arch/um/include/asm/xor.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_UM_XOR_H
#define _ASM_UM_XOR_H

#ifdef CONFIG_64BIT
#undef CONFIG_X86_32
#else
#define CONFIG_X86_32 1
#endif

#include <asm/cpufeature.h>
#include <../../x86/include/asm/xor.h>
#include <linux/time-internal.h>

#ifdef CONFIG_UML_TIME_TRAVEL_SUPPORT
#undef XOR_SELECT_TEMPLATE
/* 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)
#endif

#endif
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 09:01:28 +00:00			`/* SPDX-License-Identifier: GPL-2.0 */`
um: enable the use of optimized xor routines in UML This patch enables the use of optimized xor routines from the x86 tree as well as the necessary fpu api shims so they can work on UML. Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at> 2021-03-12 15:16:08 +00:00			`#ifndef _ASM_UM_XOR_H`
			`#define _ASM_UM_XOR_H`

			`#ifdef CONFIG_64BIT`
			`#undef CONFIG_X86_32`
			`#else`
			`#define CONFIG_X86_32 1`
			`#endif`

			`#include <asm/cpufeature.h>`
			`#include <../../x86/include/asm/xor.h>`
um: Fix xor.h include Two independent changes here ended up going into the tree one after another, without a necessary rename, fix that. Reported-by: Thomas Meyer <thomas@m3y3r.de> Fixes: f185063bff91 ("um: Move timer-internal.h to non-shared") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Richard Weinberger <richard@nod.at> 2020-04-05 19:33:57 +00:00			`#include <linux/time-internal.h>`
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 09:01:28 +00:00
um: enable the use of optimized xor routines in UML This patch enables the use of optimized xor routines from the x86 tree as well as the necessary fpu api shims so they can work on UML. Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at> 2021-03-12 15:16:08 +00:00			`#ifdef CONFIG_UML_TIME_TRAVEL_SUPPORT`
			`#undef XOR_SELECT_TEMPLATE`
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 09:01:28 +00:00			`/* 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: enable the use of optimized xor routines in UML This patch enables the use of optimized xor routines from the x86 tree as well as the necessary fpu api shims so they can work on UML. Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at> 2021-03-12 15:16:08 +00:00			`#endif`

			`#endif`