linux/arch/arm64/crypto
Masahiro Yamada 54a702f705 kbuild: mark $(targets) as .SECONDARY and remove .PRECIOUS markers
GNU Make automatically deletes intermediate files that are updated
in a chain of pattern rules.

Example 1) %.dtb.o <- %.dtb.S <- %.dtb <- %.dts
Example 2) %.o <- %.c <- %.c_shipped

A couple of makefiles mark such targets as .PRECIOUS to prevent Make
from deleting them, but the correct way is to use .SECONDARY.

  .SECONDARY
    Prerequisites of this special target are treated as intermediate
    files but are never automatically deleted.

  .PRECIOUS
    When make is interrupted during execution, it may delete the target
    file it is updating if the file was modified since make started.
    If you mark the file as precious, make will never delete the file
    if interrupted.

Both can avoid deletion of intermediate files, but the difference is
the behavior when Make is interrupted; .SECONDARY deletes the target,
but .PRECIOUS does not.

The use of .PRECIOUS is relatively rare since we do not want to keep
partially constructed (possibly corrupted) targets.

Another difference is that .PRECIOUS works with pattern rules whereas
.SECONDARY does not.

  .PRECIOUS: $(obj)/%.lex.c

works, but

  .SECONDARY: $(obj)/%.lex.c

has no effect.  However, for the reason above, I do not want to use
.PRECIOUS which could cause obscure build breakage.

The targets specified as .SECONDARY must be explicit.  $(targets)
contains all targets that need to include .*.cmd files.  So, the
intermediates you want to keep are mostly in there.  Therefore, mark
$(targets) as .SECONDARY.  It means primary targets are also marked
as .SECONDARY, but I do not see any drawback for this.

I replaced some .SECONDARY / .PRECIOUS markers with 'targets'.  This
will make Kbuild search for non-existing .*.cmd files, but this is
not a noticeable performance issue.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Frank Rowand <frowand.list@gmail.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
2018-04-07 19:04:02 +09:00
..
.gitignore crypto: arm64/sha2 - add generated .S files to .gitignore 2016-11-29 16:06:56 +08:00
Kconfig crypto: arm64/speck - add NEON-accelerated implementation of Speck-XTS 2018-03-16 23:35:41 +08:00
Makefile kbuild: mark $(targets) as .SECONDARY and remove .PRECIOUS markers 2018-04-07 19:04:02 +09:00
aes-ce-ccm-core.S crypto: arm64/aes-ce-cipher - match round key endianness with generic code 2017-08-04 09:27:19 +08:00
aes-ce-ccm-glue.c crypto: arm64/aes-ce-ccm - move kernel mode neon en/disable into loop 2018-03-16 23:35:54 +08:00
aes-ce-core.S crypto: arm64/aes-ce-cipher - move assembler code to .S file 2017-11-29 17:33:30 +11:00
aes-ce-glue.c crypto: arm64/aes-ce-cipher - move assembler code to .S file 2017-11-29 17:33:30 +11:00
aes-ce-setkey.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
aes-ce.S crypto: arm64/aes-ce-cipher - match round key endianness with generic code 2017-08-04 09:27:19 +08:00
aes-cipher-core.S crypto: arm64/aes-cipher - move S-box to .rodata section 2018-01-18 23:00:30 +11:00
aes-cipher-glue.c crypto: arm64/aes - add scalar implementation 2017-01-13 00:26:49 +08:00
aes-ctr-fallback.h crypto: arm64/aes-blk - add a non-SIMD fallback for synchronous CTR 2017-08-04 09:27:21 +08:00
aes-glue.c crypto: arm64/aes-blk - move kernel mode neon en/disable into loop 2018-03-16 23:35:54 +08:00
aes-modes.S crypto: arm64/aes-blk - add 4 way interleave to CBC-MAC encrypt path 2018-03-16 23:35:58 +08:00
aes-neon.S crypto: arm64/aes-neon - move literal data to .rodata section 2018-01-18 23:00:30 +11:00
aes-neonbs-core.S crypto: arm64/aes - don't use IV buffer to return final keystream block 2017-02-03 18:16:20 +08:00
aes-neonbs-glue.c crypto: arm64/aes-bs - move kernel mode neon en/disable into loop 2018-03-16 23:35:55 +08:00
chacha20-neon-core.S crypto: arm64/chacha20 - implement NEON version based on SSE3 code 2017-01-13 00:26:48 +08:00
chacha20-neon-glue.c crypto: arm64/chacha20 - move kernel mode neon en/disable into loop 2018-03-16 23:35:55 +08:00
crc32-ce-core.S crypto: arm64/crc32 - move literal data to .rodata section 2018-01-18 23:00:31 +11:00
crc32-ce-glue.c crypto: hash - annotate algorithms taking optional key 2018-01-12 23:03:35 +11:00
crct10dif-ce-core.S crypto: arm64/crct10dif - move literal data to .rodata section 2018-01-18 23:00:31 +11:00
crct10dif-ce-glue.c crypto: arm64/crct10dif - add non-SIMD generic fallback 2017-08-04 09:27:16 +08:00
ghash-ce-core.S crypto: arm64/ghash - add NEON accelerated fallback for 64-bit PMULL 2017-08-04 09:27:25 +08:00
ghash-ce-glue.c crypto: arm64/ghash - add NEON accelerated fallback for 64-bit PMULL 2017-08-04 09:27:25 +08:00
sha1-ce-core.S crypto: arm64/sha1-ce - get rid of literal pool 2018-01-18 23:00:33 +11:00
sha1-ce-glue.c crypto: arm64/sha1-ce - add non-SIMD generic fallback 2017-08-04 09:27:18 +08:00
sha2-ce-core.S crypto: arm64/sha2-ce - move the round constant table to .rodata section 2018-01-18 23:00:32 +11:00
sha2-ce-glue.c crypto: arm64/sha2-ce - add non-SIMD scalar fallback 2017-08-04 09:27:19 +08:00
sha3-ce-core.S crypto: arm64/sha3 - new v8.2 Crypto Extensions implementation 2018-01-26 01:10:35 +11:00
sha3-ce-glue.c crypto: arm64/sha3 - new v8.2 Crypto Extensions implementation 2018-01-26 01:10:35 +11:00
sha256-core.S_shipped crypto: arm64/sha2 - integrate OpenSSL implementations of SHA256/SHA512 2016-11-28 19:58:05 +08:00
sha256-glue.c crypto: arm64/sha256-neon - play nice with CONFIG_PREEMPT kernels 2018-03-16 23:35:58 +08:00
sha512-armv8.pl crypto: arm64/sha2 - integrate OpenSSL implementations of SHA256/SHA512 2016-11-28 19:58:05 +08:00
sha512-ce-core.S crypto: arm64/sha512 - fix/improve new v8.2 Crypto Extensions code 2018-01-26 01:10:36 +11:00
sha512-ce-glue.c crypto: arm64 - implement SHA-512 using special instructions 2018-01-18 22:52:24 +11:00
sha512-core.S_shipped crypto: arm64/sha2 - integrate OpenSSL implementations of SHA256/SHA512 2016-11-28 19:58:05 +08:00
sha512-glue.c crypto: arm64/sha512 - fix/improve new v8.2 Crypto Extensions code 2018-01-26 01:10:36 +11:00
sm3-ce-core.S crypto: arm64/sm3 - new v8.2 Crypto Extensions implementation 2018-01-26 01:10:35 +11:00
sm3-ce-glue.c crypto: arm64/sm3 - new v8.2 Crypto Extensions implementation 2018-01-26 01:10:35 +11:00
speck-neon-core.S crypto: arm64/speck - add NEON-accelerated implementation of Speck-XTS 2018-03-16 23:35:41 +08:00
speck-neon-glue.c crypto: arm64/speck - add NEON-accelerated implementation of Speck-XTS 2018-03-16 23:35:41 +08:00