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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-11-02 02:28:33 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-11-02 02:28:33 +0100 |
| commit | 1e0c505e13162a2abe7c984309cfe2ae976b428d (patch) | |
| tree | 1a67ca0d219e3990e8290ca33af91323d59e31e2 /Documentation/scheduler | |
| parent | Merge tag 'soc-arm-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc (diff) | |
| parent | hexagon: Remove unusable symbols from the ptrace.h uapi (diff) | |
| download | linux-1e0c505e13162a2abe7c984309cfe2ae976b428d.tar.xz linux-1e0c505e13162a2abe7c984309cfe2ae976b428d.zip | |
Merge tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull ia64 removal and asm-generic updates from Arnd Bergmann:
- The ia64 architecture gets its well-earned retirement as planned,
now that there is one last (mostly) working release that will be
maintained as an LTS kernel.
- The architecture specific system call tables are updated for the
added map_shadow_stack() syscall and to remove references to the
long-gone sys_lookup_dcookie() syscall.
* tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
hexagon: Remove unusable symbols from the ptrace.h uapi
asm-generic: Fix spelling of architecture
arch: Reserve map_shadow_stack() syscall number for all architectures
syscalls: Cleanup references to sys_lookup_dcookie()
Documentation: Drop or replace remaining mentions of IA64
lib/raid6: Drop IA64 support
Documentation: Drop IA64 from feature descriptions
kernel: Drop IA64 support from sig_fault handlers
arch: Remove Itanium (IA-64) architecture
Diffstat (limited to 'Documentation/scheduler')
| -rw-r--r-- | Documentation/scheduler/sched-arch.rst | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/Documentation/scheduler/sched-arch.rst b/Documentation/scheduler/sched-arch.rst index 505cd27f9a92..ed07efea7d02 100644 --- a/Documentation/scheduler/sched-arch.rst +++ b/Documentation/scheduler/sched-arch.rst @@ -10,7 +10,7 @@ Context switch By default, the switch_to arch function is called with the runqueue locked. This is usually not a problem unless switch_to may need to take the runqueue lock. This is usually due to a wake up operation in -the context switch. See arch/ia64/include/asm/switch_to.h for an example. +the context switch. To request the scheduler call switch_to with the runqueue unlocked, you must `#define __ARCH_WANT_UNLOCKED_CTXSW` in a header file @@ -68,7 +68,5 @@ Possible arch/ problems Possible arch problems I found (and either tried to fix or didn't): -ia64 - is safe_halt call racy vs interrupts? (does it sleep?) (See #4a) - sparc - IRQs on at this point(?), change local_irq_save to _disable. - TODO: needs secondary CPUs to disable preempt (See #1) |