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be742c573f
linux/arch/powerpc/lib
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Nicholas Piggin be742c573f powerpc/qspinlock: add ability to prod new queue head CPU 
After the head of the queue acquires the lock, it releases the
next waiter in the queue to become the new head. Add an option
to prod the new head if its vCPU was preempted. This may only
have an effect if queue waiters are yielding.

Disable this option by default for now, i.e., no logical change.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221126095932.1234527-12-npiggin@gmail.com
2022-12-02 17:48:50 +11:00
..
alloc.c treewide: add checks for the return value of memblock_alloc*() 2019-03-12 10:04:02 -07:00
checksum_32.S powerpc/32: Remove remaining .stabs annotations 2022-02-07 21:03:10 +11:00
checksum_64.S ppc: propagate the calling conventions change down to csum_partial_copy_generic() 2020-08-20 15:45:22 -04:00
checksum_wrappers.c net: unexport csum_and_copy_{from,to}_user 2022-04-29 14:37:59 -07:00
code-patching.c powerpc/code-patching: Speed up page mapping/unmapping 2022-09-01 13:56:01 +10:00
copy_32.S powerpc/32: Remove remaining .stabs annotations 2022-02-07 21:03:10 +11:00
copy_mc_64.S x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}() 2020-10-06 11:18:04 +02:00
copypage_64.S powerpc/64: asm use consistent global variable declaration and access 2022-09-28 19:22:12 +10:00
copypage_power7.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
copyuser_64.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
copyuser_power7.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
crtsavres.S powerpc/64: Do not create new section for save/restore functions 2017-05-30 14:59:51 +10:00
div64.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
error-inject.c powerpc/64s: avoid reloading (H)SRR registers if they are still valid 2021-06-25 00:06:55 +10:00
feature-fixups-test.S powerpc: Test prefixed instructions in feature fixups 2020-05-19 00:11:02 +10:00
feature-fixups.c powerpc: Remove CONFIG_PPC_FSL_BOOK3E 2022-09-26 23:00:13 +10:00
hweight_64.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ldstfp.S powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
locks.c powerpc/pseries: Move some PAPR paravirt functions to their own file 2020-07-26 23:34:26 +10:00
Makefile powerpc/qspinlock: powerpc qspinlock implementation 2022-12-02 17:48:02 +11:00
mem_64.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
memcmp_32.S powerpc/lib: optimise PPC32 memcmp 2018-06-04 00:39:21 +10:00
memcmp_64.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
memcpy_64.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
memcpy_power7.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pmem.c powerpc/pmem: Include pmem prototypes 2021-01-30 11:39:28 +11:00
qspinlock.c powerpc/qspinlock: add ability to prod new queue head CPU 2022-12-02 17:48:50 +11:00
quad.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
restart_table.c powerpc/64s: add a table of implicit soft-masked addresses 2021-06-30 22:21:20 +10:00
rheap.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
sstep.c powerpc/64: remove system call instruction emulation 2022-05-06 00:00:20 +10:00
string_32.S powerpc: Fix __clear_user() with KUAP enabled 2019-12-16 23:19:44 +11:00
string_64.S powerpc/64: asm use consistent global variable declaration and access 2022-09-28 19:22:12 +10:00
string.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
strlen_32.S powerpc/lib: Implement strlen() in assembly for PPC32 2018-08-07 21:49:30 +10:00
test_emulate_step_exec_instr.S powerpc: flexible GPR range save/restore macros 2021-11-29 23:15:20 +11:00
test_emulate_step.c powerpc/ppc-opcode: Define and use PPC_RAW_SETB() 2022-07-27 21:36:05 +10:00
test-code-patching.c powerpc/code-patching: Replace patch_instruction() by ppc_inst_write() in selftests 2021-12-23 22:36:58 +11:00
vmx-helper.c powerpc: Move C prototypes out of asm-prototypes.h 2022-03-08 22:06:25 +11:00
xor_vmx_glue.c lib/xor: make xor prototypes more friendly to compiler vectorization 2022-02-11 20:39:39 +11:00
xor_vmx.c lib/xor: make xor prototypes more friendly to compiler vectorization 2022-02-11 20:39:39 +11:00
xor_vmx.h lib/xor: make xor prototypes more friendly to compiler vectorization 2022-02-11 20:39:39 +11:00