Christophe Leroy 328e7e487a powerpc: force inlining of csum_partial() to avoid multiple csum_partial() with GCC10 ... ppc-linux-objdump -d vmlinux | grep -e "<csum_partial>" -e "<__csum_partial>" With gcc9 I get: c0017ef8 <__csum_partial>: c00182fc: 4b ff fb fd bl c0017ef8 <__csum_partial> c0018478: 4b ff fa 80 b c0017ef8 <__csum_partial> c03e8458: 4b c2 fa a0 b c0017ef8 <__csum_partial> c03e8518: 4b c2 f9 e1 bl c0017ef8 <__csum_partial> c03ef410: 4b c2 8a e9 bl c0017ef8 <__csum_partial> c03f0b24: 4b c2 73 d5 bl c0017ef8 <__csum_partial> c04279a4: 4b bf 05 55 bl c0017ef8 <__csum_partial> c0429820: 4b be e6 d9 bl c0017ef8 <__csum_partial> c0429944: 4b be e5 b5 bl c0017ef8 <__csum_partial> c042b478: 4b be ca 81 bl c0017ef8 <__csum_partial> c042b554: 4b be c9 a5 bl c0017ef8 <__csum_partial> c045f15c: 4b bb 8d 9d bl c0017ef8 <__csum_partial> c0492190: 4b b8 5d 69 bl c0017ef8 <__csum_partial> c0492310: 4b b8 5b e9 bl c0017ef8 <__csum_partial> c0495594: 4b b8 29 65 bl c0017ef8 <__csum_partial> c049c420: 4b b7 ba d9 bl c0017ef8 <__csum_partial> c049c870: 4b b7 b6 89 bl c0017ef8 <__csum_partial> c049c930: 4b b7 b5 c9 bl c0017ef8 <__csum_partial> c04a9ca0: 4b b6 e2 59 bl c0017ef8 <__csum_partial> c04bdde4: 4b b5 a1 15 bl c0017ef8 <__csum_partial> c04be480: 4b b5 9a 79 bl c0017ef8 <__csum_partial> c04be710: 4b b5 97 e9 bl c0017ef8 <__csum_partial> c04c969c: 4b b4 e8 5d bl c0017ef8 <__csum_partial> c04ca2fc: 4b b4 db fd bl c0017ef8 <__csum_partial> c04cf5bc: 4b b4 89 3d bl c0017ef8 <__csum_partial> c04d0440: 4b b4 7a b9 bl c0017ef8 <__csum_partial> With gcc10 I get: c0018d08 <__csum_partial>: c0019020 <csum_partial>: c0019020: 4b ff fc e8 b c0018d08 <__csum_partial> c001914c: 4b ff fe d4 b c0019020 <csum_partial> c0019250: 4b ff fd d1 bl c0019020 <csum_partial> c03e404c <csum_partial>: c03e404c: 4b c3 4c bc b c0018d08 <__csum_partial> c03e4050: 4b ff ff fc b c03e404c <csum_partial> c03e40fc: 4b ff ff 51 bl c03e404c <csum_partial> c03e6680: 4b ff d9 cd bl c03e404c <csum_partial> c03e68c4: 4b ff d7 89 bl c03e404c <csum_partial> c03e7934: 4b ff c7 19 bl c03e404c <csum_partial> c03e7bf8: 4b ff c4 55 bl c03e404c <csum_partial> c03eb148: 4b ff 8f 05 bl c03e404c <csum_partial> c03ecf68: 4b c2 bd a1 bl c0018d08 <__csum_partial> c04275b8 <csum_partial>: c04275b8: 4b bf 17 50 b c0018d08 <__csum_partial> c0427884: 4b ff fd 35 bl c04275b8 <csum_partial> c0427b18: 4b ff fa a1 bl c04275b8 <csum_partial> c0427bd8: 4b ff f9 e1 bl c04275b8 <csum_partial> c0427cd4: 4b ff f8 e5 bl c04275b8 <csum_partial> c0427e34: 4b ff f7 85 bl c04275b8 <csum_partial> c045a1c0: 4b bb eb 49 bl c0018d08 <__csum_partial> c0489464 <csum_partial>: c0489464: 4b b8 f8 a4 b c0018d08 <__csum_partial> c04896b0: 4b ff fd b5 bl c0489464 <csum_partial> c048982c: 4b ff fc 39 bl c0489464 <csum_partial> c0490158: 4b b8 8b b1 bl c0018d08 <__csum_partial> c0492f0c <csum_partial>: c0492f0c: 4b b8 5d fc b c0018d08 <__csum_partial> c049326c: 4b ff fc a1 bl c0492f0c <csum_partial> c049333c: 4b ff fb d1 bl c0492f0c <csum_partial> c0493b18: 4b ff f3 f5 bl c0492f0c <csum_partial> c0493f50: 4b ff ef bd bl c0492f0c <csum_partial> c0493ffc: 4b ff ef 11 bl c0492f0c <csum_partial> c04a0f78: 4b b7 7d 91 bl c0018d08 <__csum_partial> c04b3e3c: 4b b6 4e cd bl c0018d08 <__csum_partial> c04b40d0 <csum_partial>: c04b40d0: 4b b6 4c 38 b c0018d08 <__csum_partial> c04b4448: 4b ff fc 89 bl c04b40d0 <csum_partial> c04b46f4: 4b ff f9 dd bl c04b40d0 <csum_partial> c04bf448: 4b b5 98 c0 b c0018d08 <__csum_partial> c04c5264: 4b b5 3a a5 bl c0018d08 <__csum_partial> c04c61e4: 4b b5 2b 25 bl c0018d08 <__csum_partial> gcc10 defines multiple versions of csum_partial() which are just an unconditionnal branch to __csum_partial(). To enforce inlining of that branch to __csum_partial(), mark csum_partial() as __always_inline. With this patch with gcc10: c0018d08 <__csum_partial>: c0019148: 4b ff fb c0 b c0018d08 <__csum_partial> c001924c: 4b ff fa bd bl c0018d08 <__csum_partial> c03e40ec: 4b c3 4c 1d bl c0018d08 <__csum_partial> c03e4120: 4b c3 4b e8 b c0018d08 <__csum_partial> c03eb004: 4b c2 dd 05 bl c0018d08 <__csum_partial> c03ecef4: 4b c2 be 15 bl c0018d08 <__csum_partial> c0427558: 4b bf 17 b1 bl c0018d08 <__csum_partial> c04286e4: 4b bf 06 25 bl c0018d08 <__csum_partial> c0428cd8: 4b bf 00 31 bl c0018d08 <__csum_partial> c0428d84: 4b be ff 85 bl c0018d08 <__csum_partial> c045a17c: 4b bb eb 8d bl c0018d08 <__csum_partial> c0489450: 4b b8 f8 b9 bl c0018d08 <__csum_partial> c0491860: 4b b8 74 a9 bl c0018d08 <__csum_partial> c0492eec: 4b b8 5e 1d bl c0018d08 <__csum_partial> c04a0eac: 4b b7 7e 5d bl c0018d08 <__csum_partial> c04b3e34: 4b b6 4e d5 bl c0018d08 <__csum_partial> c04b426c: 4b b6 4a 9d bl c0018d08 <__csum_partial> c04b463c: 4b b6 46 cd bl c0018d08 <__csum_partial> c04c004c: 4b b5 8c bd bl c0018d08 <__csum_partial> c04c0368: 4b b5 89 a1 bl c0018d08 <__csum_partial> c04c5254: 4b b5 3a b5 bl c0018d08 <__csum_partial> c04c60d4: 4b b5 2c 35 bl c0018d08 <__csum_partial> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/a1d31f84ddb0926813b17fcd5cc7f3fa7b4deac2.1602759123.git.christophe.leroy@csgroup.eu		2020-12-15 22:50:11 +11:00
..
boot	powerpc/boot: Make use of REL16 relocs in powerpc/boot/util.S	2020-12-04 01:00:44 +11:00
configs	powerpc: add security.config, enforcing lockdown=integrity	2020-12-04 01:01:34 +11:00
crypto	crypto: powerpc/crc-vpmsum_test - Fix sparse endianness warning	2020-09-04 17:57:15 +10:00
include	powerpc: force inlining of csum_partial() to avoid multiple csum_partial() with GCC10	2020-12-15 22:50:11 +11:00
kernel	powerpc/cacheinfo: Print correct cache-sibling map/list for L2 cache	2020-12-11 00:10:25 +11:00
kexec	arch, drivers: replace for_each_membock() with for_each_mem_range()	2020-10-13 18:38:35 -07:00
kvm	KVM: PPC: Book3S HV: Fix mask size for emulated msgsndp	2020-12-15 22:22:06 +11:00
lib	powerpc/sstep: Add testcases for VSX vector paired load/store instructions	2020-12-11 00:09:10 +11:00
math-emu
mm	powerpc/mm: Fix hugetlb_free_pmd_range() and hugetlb_free_pud_range()	2020-12-15 22:22:07 +11:00
net	bpf, powerpc: Fix misuse of fallthrough in bpf_jit_comp()	2020-09-29 16:39:11 +02:00
oprofile	powerpc/oprofile: fix spelling mistake "contex" -> "context"	2020-08-25 01:31:33 +10:00
perf	powerpc/perf: Fix Threshold Event Counter Multiplier width for P10	2020-12-15 22:50:04 +11:00
platforms	powerpc/64: irq replay remove decrementer overflow check	2020-12-09 23:48:15 +11:00
purgatory	powerpc/kexec_file: Enable early kernel OPAL calls	2020-07-29 23:47:55 +10:00
sysdev	powerpc/xive: Improve error reporting of OPAL calls	2020-12-11 09:53:11 +11:00
tools	powerpc/tools: Remove 90 line limit in checkpatch script	2020-09-08 22:57:11 +10:00
xmon	powerpc/xmon: Change printk() to pr_cont()	2020-12-04 21:56:30 +11:00
Kbuild
Kconfig	powerpc: Increase NR_IRQS range to support more KVM guests	2020-12-11 09:53:10 +11:00
Kconfig.debug	powerpc: Remove Xilinx PPC405/PPC440 support	2020-05-28 23:24:34 +10:00
Makefile	powerpc/vdso: Retrieve sigtramp offsets at buildtime	2020-12-04 01:01:17 +11:00
Makefile.postlink	powerpc: unrel_branch_check.sh: use nm to find symbol value	2020-09-02 11:00:22 +10:00