[linux-yocto] [PATCH linux-yocto-4.4 00/14] Add Link Time Optimization
Bruce Ashfield
bruce.ashfield at windriver.com
Tue Feb 14 13:03:59 PST 2017
On 2017-02-13 3:41 PM, Alejandro Hernandez wrote:
> These set of patches enable Link Time Optimization (LTO), they are meant specifically
> for linux-yocto-4.4, another set (rebased) will be sent for linux-yocto-4.8 and
> linux-yocto-4.9 respectively, these also complement the series sent to yocto-kernel-cache
> a few weeks ago.
The changes look fine to me, but in order to properly track them
against upstream, I'd like to add a bit more logging to the commit
headers.
I assume these were posted to lkml (I haven't gone to look yet),
and if they were posted, can we add a lkml archive link to the
headers ?
That allows me to track the progress and update/drop them as appropriate.
Bruce
>
> Andi Kleen (14):
> Kbuild, lto: Set TMPDIR for LTO v4
> lto: Add __noreorder and mark initcalls __noreorder
> Kbuild, lto: Add Link Time Optimization support
> lto: Disable LTO for hweight functions
> Don't inline __const_udelay
> Mark spinlocks noinline when inline spinlocks are disabled
> Kbuild, bloat-o-meter: Ignore .lto_priv postfix
> Don't let LATENCYTOP and LOCKDEP select KALLSYMS_ALL
> lto, workaround: Disable LTO for BPF
> x86, perf: Fix __initconst declaration in rapl perf driver
> x86, workaround: Disable mm init BUILD_BUG_ON for LTO
> work around linker map issue
> sched: Move sched_to_prio arrays out of line
> fixup! Kbuild, lto: Add Link Time Optimization support
>
> Documentation/lto-build | 173 ++++++++++++++++++++++++++++
> Makefile | 19 ++-
> arch/x86/Kconfig | 2 +-
> arch/x86/kernel/cpu/perf_event_intel_rapl.c | 2 +-
> arch/x86/kernel/vmlinux.lds.S | 2 +
> arch/x86/lib/delay.c | 2 +-
> arch/x86/mm/init_32.c | 2 +
> include/linux/compiler-gcc.h | 5 +
> include/linux/compiler.h | 4 +
> include/linux/init.h | 2 +-
> init/Kconfig | 73 ++++++++++++
> kernel/bpf/Makefile | 5 +
> kernel/gcov/Kconfig | 2 +-
> kernel/locking/spinlock.c | 56 ++++-----
> kernel/sched/auto_group.c | 2 +-
> kernel/sched/core.c | 45 +++++++-
> kernel/sched/sched.h | 42 +------
> lib/Kconfig.debug | 3 +-
> lib/Makefile | 4 +-
> scripts/Makefile.lto | 94 +++++++++++++++
> scripts/Makefile.modpost | 7 +-
> scripts/bloat-o-meter | 1 +
> scripts/gcc-ld | 2 +-
> scripts/link-vmlinux.sh | 2 +-
> 24 files changed, 466 insertions(+), 85 deletions(-)
> create mode 100644 Documentation/lto-build
> create mode 100644 scripts/Makefile.lto
>
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