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
pci-v4.17-changes
2018-04-06 18:31:06 -07:00
Merge branch 'for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
2018-04-03 17:42:25 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-04-01 19:49:34 -04:00
mm/memory_hotplug: optimize memory hotplug
2018-04-05 21:36:25 -07:00
Merge branch 'akpm' (patches from Andrew)
2018-04-06 14:19:26 -07:00
Bluetooth: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for BTUSB_QCA_ROME
2018-04-01 21:43:02 +03:00
pci-v4.17-changes
2018-04-06 18:31:06 -07:00
kernel.h: Retain constant expression output for max()/min()
2018-04-05 14:17:16 -07:00
ARM: SoC driver updates for 4.17
2018-04-05 21:29:35 -07:00
ARM: SoC platform updates for 4.17
2018-04-05 21:21:08 -07:00
ARM: SoC driver updates for 4.17
2018-04-05 21:29:35 -07:00
cpuidle: poll_state: Avoid invoking local_clock() too often
2018-03-29 13:06:08 +02:00
.gitignore: move *-asn1.[ch] patterns to the top-level .gitignore
2018-04-07 19:04:02 +09:00
device-dax: implement ->pagesize() for smaps to report MMUPageSize
2018-04-05 21:36:26 -07:00
dmaengine: stm32-dmamux: fix a potential buffer overflow
2018-03-22 10:51:35 +05:30
* Add NVDIMM support to EDAC (Tony Luck)
2018-04-05 14:21:13 -07:00
Char/Misc patches for 4.17-rc1
2018-04-04 20:07:20 -07:00
fw_cfg, vhost: features fixes
2018-04-06 19:21:41 -07:00
treewide: Fix typos in printk
2018-03-27 09:51:22 +02:00
PCI: Add Altera vendor ID
2018-03-19 14:18:22 -05:00
DeviceTree updates for 4.17:
2018-04-05 21:03:42 -07:00
pci-v4.17-changes
2018-04-06 18:31:06 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
2018-04-05 11:53:34 -07:00
HSI: hsi_char: Delete an error message for a failed memory allocation in hsc_probe()
2018-03-19 16:31:07 +01:00
hv: add SPDX license id to Kconfig
2018-03-28 13:24:56 +02:00
ARM SCMI fixes/cleanups for v4.17
2018-03-27 15:57:19 +02:00
Char/Misc patches for 4.17-rc1
2018-04-04 20:07:20 -07:00
arch: remove obsolete architecture ports
2018-04-02 20:20:12 -07:00
for-4.17/block-20180402
2018-04-05 14:27:02 -07:00
This is the bulk of GPIO changes for the v4.17 kernel cycle:
2018-04-05 09:51:41 -07:00
Merge candidates for 4.17 merge window
2018-04-06 17:35:43 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2018-04-05 13:21:57 -07:00
headers: untangle kmemleak.h from mm.h
2018-04-05 21:36:27 -07:00
Staging/IIO patches for 4.17-rc1
2018-04-04 18:56:27 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-04-03 14:04:18 -07:00
leds: Fix wrong dmi_match on PC Engines APU LEDs
2018-03-20 20:28:00 +01:00
lightnvm: pblk: remove some unnecessary NULL checks
2018-03-29 17:29:09 -06:00
macintosh/via-pmu68k: Initialize PMU driver with setup_arch and arch_initcall
2018-03-19 10:22:59 +01:00
mailbox: Add support for Hi3660 mailbox
2018-03-20 11:15:54 +08:00
mcb: Add Altera PCI ID to mcb-pci
2018-03-19 14:20:24 -05:00
- DM core passthrough ioctl fix to retain reference to DM table, and
2018-04-06 11:50:19 -07:00
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-04-06 11:07:08 -07:00
treewide: Align function definition open/close braces
2018-03-26 11:13:09 +02:00
pci-v4.17-changes
2018-04-06 18:31:06 -07:00
for-4.17/block-20180402
2018-04-05 14:27:02 -07:00
MTD changes:
2018-04-06 12:15:41 -07:00
pci-v4.17-changes
2018-04-06 18:31:06 -07:00
for-4.17/block-20180402
2018-04-05 14:27:02 -07:00
for-4.17/block-20180402
2018-04-05 14:27:02 -07:00
Char/Misc patches for 4.17-rc1
2018-04-04 20:07:20 -07:00
kbuild: mark $(targets) as .SECONDARY and remove .PRECIOUS markers
2018-04-07 19:04:02 +09:00
oprofilefs: don't oops on allocation failure
2018-03-29 15:07:48 -04:00
parisc/pci: Switch LBA PCI bus from Hard Fail to Soft Fail mode
2018-03-27 18:52:22 +02:00
Char/Misc patches for 4.17-rc1
2018-04-04 20:07:20 -07:00
pci-v4.17-changes
2018-04-06 18:31:06 -07:00
Power management updates for 4.17-rc1
2018-04-03 10:45:39 -07:00
ARM: SoC driver updates for 4.17
2018-04-05 21:29:35 -07:00
ARM: SoC platform updates for 4.17
2018-04-05 21:21:08 -07:00
This is the bulk of GPIO changes for the v4.17 kernel cycle:
2018-04-05 09:51:41 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2018-04-05 11:56:35 -07:00
ARM: SoC platform updates for 4.17
2018-04-05 21:21:08 -07:00
ARM: SoC platform updates for 4.17
2018-04-05 21:21:08 -07:00
Merge remote-tracking branches 'regulator/topic/88pg86x', 'regulator/topic/dt', 'regulator/topic/formatting' and 'regulator/topic/gpio' into regulator-next
2018-03-28 10:33:53 +08:00
Merge branch 'reset/lookup' into reset/next
2018-03-27 11:03:43 +02:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2018-04-05 11:56:35 -07:00
for-4.17/block-20180402
2018-04-05 14:27:02 -07:00
sparc64: Properly range check DAX completion index
2018-04-01 20:07:00 -04:00
SCSI for-linus on 20180404
2018-04-05 15:05:53 -07:00
ARM: SoC driver updates for 4.17
2018-04-05 21:29:35 -07:00
spi: SPI updates for v4.17
2018-04-03 12:06:21 -07:00
Merge branch 'akpm' (patches from Andrew)
2018-04-06 14:19:26 -07:00
for-4.17/block-20180402
2018-04-05 14:27:02 -07:00
TTY/Serial driver patches for 4.17-rc1
2018-04-04 18:43:49 -07:00
TTY/Serial driver patches for 4.17-rc1
2018-04-04 18:43:49 -07:00
VFIO updates for v4.17-rc1
2018-04-06 19:44:27 -07:00
fw_cfg, vhost: features fixes
2018-04-06 19:21:41 -07:00
TTY/Serial driver patches for 4.17-rc1
2018-04-04 18:43:49 -07:00
headers: untangle kmemleak.h from mm.h
2018-04-05 21:36:27 -07:00
This is the bulk of GPIO changes for the v4.17 kernel cycle:
2018-04-05 09:51:41 -07:00
x86/dma: Remove dma_alloc_coherent_mask()
2018-03-20 10:01:56 +01:00
zorro: Set up z->dev.dma_mask for the DMA API
2018-03-19 10:26:46 +01:00
hwtracing: Add HW tracing support menu
2018-03-29 13:38:10 +03:00
54a702f705