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6 Commits

Author SHA1 Message Date
Greg Kroah-Hartman
e74ef7cf8f Merge tag 'v5.15-rc1' into android-mainline 
Linux 5.15-rc1

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ib4933c598d27b18268860e7549966ef7724652fc
 2021-09-16 09:51:19 +02:00
Miles Chen
e930fc6535 FROMLIST: scripts/sorttable: riscv: fix undelcred identifier 'EM_RISCV' error 
Fix the following build break by adding a conditional definition
of EM_RISCV in order to allow cross-compilation on machines
which do not have EM_RISCV definition in their host.

build break log from [1]:
scripts/sorttable.c:352:7: error: use of undeclared identifier 'EM_RISCV'

[1] https://lore.kernel.org/lkml/e8965b25-f15b-c7b4-748c-d207dda9c8e8@i2se.com/

Fixes: 54fed35fd3 ("riscv: Enable BUILDTIME_TABLE_SORT")
Cc: Jisheng Zhang <jszhang@kernel.org>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Link: https://lore.kernel.org/r/20210913030625.4525-1-miles.chen@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I597d91c741bfcc0e879908e4e0c8aa114b9ccda4
 2021-09-16 09:19:17 +02:00
Jisheng Zhang
54fed35fd3 riscv: Enable BUILDTIME_TABLE_SORT 
Enable BUILDTIME_TABLE_SORT to sort the exception table at build time
rather than during boot.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
 2021-09-10 23:59:44 -07:00
Ilya Leoshkevich
05a68e892e s390/kernel: expand exception table logic to allow new handling options 
This is a s390 port of commit 548acf1923 ("x86/mm: Expand the
exception table logic to allow new handling options"), which is needed
for implementing BPF_PROBE_MEM on s390.

The new handler field is made 64-bit in order to allow pointing from
dynamically allocated entries to handlers in kernel text. Unlike on x86,
NULL is used instead of ex_handler_default. This is because exception
tables are used by boot/text_dma.S, and it would be a pain to preserve
ex_handler_default.

The new infrastructure is ignored in early_pgm_check_handler, since
there is no pt_regs.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
 2020-07-20 10:55:50 +02:00
Shile Zhang
57fa189942 scripts/sorttable: Implement build-time ORC unwind table sorting 
The ORC unwinder has two tables: .orc_unwind_ip and .orc_unwind, which
need to be sorted for binary search. Previously this sorting was done
during bootup.

Sort them at build time to speed up booting.

Add the ORC tables sorting in a parallel build process to speed up the build.

[ mingo: Rewrote the changelog and fixed some comments. ]

Suggested-by: Andy Lutomirski <luto@amacapital.net>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Shile Zhang <shile.zhang@linux.alibaba.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: linux-kbuild@vger.kernel.org
Link: https://lkml.kernel.org/r/20191204004633.88660-7-shile.zhang@linux.alibaba.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2019-12-13 10:47:58 +01:00
Shile Zhang
1091670637 scripts/sorttable: Rename 'sortextable' to 'sorttable' 
Use a more generic name for additional table sorting usecases,
such as the upcoming ORC table sorting feature. This tool is
not tied to exception table sorting anymore.

No functional changes intended.

[ mingo: Rewrote the changelog. ]

Signed-off-by: Shile Zhang <shile.zhang@linux.alibaba.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: linux-kbuild@vger.kernel.org
Link: https://lkml.kernel.org/r/20191204004633.88660-6-shile.zhang@linux.alibaba.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2019-12-13 10:47:58 +01:00