linux/arch/sh
Marco Elver be3f152568 perf/hw_breakpoint: Optimize constant number of breakpoint slots
Optimize internal hw_breakpoint state if the architecture's number of
breakpoint slots is constant. This avoids several kmalloc() calls and
potentially unnecessary failures if the allocations fail, as well as
subtly improves code generation and cache locality.

The protocol is that if an architecture defines hw_breakpoint_slots via
the preprocessor, it must be constant and the same for all types.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20220829124719.675715-7-elver@google.com
2022-08-30 10:56:22 +02:00
..
boards mmc: sh_mmcif: move platform_data header to proper location 2022-04-26 14:05:21 +02:00
boot mmc: sh_mmcif: move platform_data header to proper location 2022-04-26 14:05:21 +02:00
cchips treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
configs ARM: defconfig: remove irda remnants 2022-07-22 12:33:42 +02:00
drivers PCI: Add defines for normal and subtractive PCI bridges 2022-02-17 15:29:35 -06:00
include perf/hw_breakpoint: Optimize constant number of breakpoint slots 2022-08-30 10:56:22 +02:00
kernel asm-generic: updates for 6.0 2022-08-05 10:07:23 -07:00
lib sh: propage the calling conventions change down to csum_partial_copy_generic() 2020-08-20 15:45:18 -04:00
math-emu sh: fix READ/WRITE redefinition warnings 2021-10-27 16:51:32 -04:00
mm sh/mm: enable ARCH_HAS_VM_GET_PAGE_PROT 2022-07-17 17:14:41 -07:00
tools sh: Remove SH5-based Cayman platform 2020-08-14 22:05:06 -04:00
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig mm/mmap: drop ARCH_HAS_VM_GET_PAGE_PROT 2022-07-17 17:14:41 -07:00
Kconfig.cpu docs: sh: convert register-banks.txt to ReST 2020-06-19 14:10:13 -06:00
Kconfig.debug sh: fix kconfig unmet dependency warning for FRAME_POINTER 2021-10-27 16:51:01 -04:00
Makefile kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00