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linux/arch/openrisc/include/asm/processor.h

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-27 08:55:01 +02:00
OpenRISC: Headers Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-06-04 22:43:49 +03:00
openrisc: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize on the __ASSEMBLER__ macro that is provided by the compilers now. This is a completely mechanical patch (done with a simple "sed -i" statement). Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Stafford Horne <shorne@gmail.com> Cc: linux-openrisc@vger.kernel.org Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Stafford Horne <shorne@gmail.com>
2025-03-14 08:09:54 +01:00
OpenRISC: Headers Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-06-04 22:43:49 +03:00
openrisc: Move FPU state out of pt_regs My original, naive, FPU support patch had the FPCSR register stored during both the *mode switch* and *context switch*. This is wasteful. Also, the original patches did not save the FPU state when handling signals during the system call fast path. We fix this by moving the FPCSR state to thread_struct in task_struct. We also introduce new helper functions save_fpu and restore_fpu which can be used to sync the FPU with thread_struct. These functions are now called when needed: - Setting up and restoring sigcontext when handling signals - Before and after __switch_to during context switches - When handling FPU exceptions - When reading and writing FPU register sets In the future we can further optimize this by doing lazy FPU save and restore. For example, FPU sync is not needed when switching to and from kernel threads (x86 does this). FPU save and restore does not need to be done two times if we have both rescheduling and signal work to do. However, since OpenRISC FPU state is a single register, I leave these optimizations for future consideration. Signed-off-by: Stafford Horne <shorne@gmail.com>
2024-03-30 14:56:39 +00:00
OpenRISC: Headers Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-06-04 22:43:49 +03:00
openrisc: remove semicolon from KSTK_ defs Things break rather ungracefully when a semicolon gets substituted into an expression... discovered while build-testing linux-next for 3.4 Signed-off-by: Jonas Bonn <jonas@southpole.se>
2012-03-06 07:57:25 +01:00
OpenRISC: Headers Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-06-04 22:43:49 +03:00
sched: Add wrapper for get_wchan() to keep task blocked Having a stable wchan means the process must be blocked and for it to stay that way while performing stack unwinding. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> [arm] Tested-by: Mark Rutland <mark.rutland@arm.com> [arm64] Link: https://lkml.kernel.org/r/20211008111626.332092234@infradead.org
2021-09-29 15:02:14 -07:00
openrisc: Add prototype for show_registers to processor.h When compiling with W=1 enabling -Wmissing-prototypes the compiler warns: arch/openrisc/kernel/traps.c:67:6: error: no previous prototype for 'show_registers' [-Werror=missing-prototypes] Fix by adding the prototype to the appropriate header file and including the header file in the appropriate C files. Reported-by: Arnd Bergmann <arnd@arndb.de> Closes: https://lore.kernel.org/linux-kernel/20230810141947.1236730-17-arnd@kernel.org/ Signed-off-by: Stafford Horne <shorne@gmail.com>
2023-08-20 17:11:39 +01:00
OpenRISC: Headers Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-06-04 22:43:49 +03:00
openrisc: Make cpu_relax() invoke barrier() Make cpu_relax() invoke barrier() to be the same as other arches. Signed-off-by: Vladimir Murzin <murzin.v@gmail.com> Signed-off-by: Jonas Bonn <jonas@southpole.se>
2012-09-17 20:57:08 +04:00
OpenRISC: Headers Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-06-04 22:43:49 +03:00
openrisc: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize on the __ASSEMBLER__ macro that is provided by the compilers now. This is a completely mechanical patch (done with a simple "sed -i" statement). Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Stafford Horne <shorne@gmail.com> Cc: linux-openrisc@vger.kernel.org Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Stafford Horne <shorne@gmail.com>
2025-03-14 08:09:54 +01:00
OpenRISC: Headers Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-06-04 22:43:49 +03:00