Hi all,
On Fri, 7 Jan 2022 17:13:19 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> Since yesterday, my builds are taking much longer and it seems just
> about everything is being rebuilt when there should be very little done.
>
> One example is after mergeing the clockevents tree, the diffstat looks
> like this:
>
> $ git diff --stat HEAD^..
> .../devicetree/bindings/timer/cdns,ttc.yaml | 3 +
> .../bindings/timer/mstar,msc313e-timer.yaml | 46 ++++
> .../devicetree/bindings/timer/nxp,tpm-timer.yaml | 6 +-
> .../devicetree/bindings/timer/renesas,ostm.yaml | 20 +-
> .../bindings/timer/rockchip,rk-timer.yaml | 1 -
> MAINTAINERS | 1 +
> drivers/clocksource/Kconfig | 12 +-
> drivers/clocksource/Makefile | 1 +
> drivers/clocksource/exynos_mct.c | 52 +++--
> drivers/clocksource/renesas-ostm.c | 39 +++-
> drivers/clocksource/timer-imx-sysctr.c | 6 +-
> drivers/clocksource/timer-msc313e.c | 253 +++++++++++++++++++++
> drivers/clocksource/timer-pistachio.c | 3 +-
> 13 files changed, 411 insertions(+), 32 deletions(-)
>
> but my powerpc and arm builds rebuilt basically everything.
>
> This happens for a lot of merges - though some do not rebuild very much
> at all.
>
> Any ideas about what changed yesterday? (I directed this to the kbuild
> tree maintainer since the kbuild tree was updated yesterday - though
> that may be a coincidence).
OK, it *may* have something to do with Kconfig file updates for example with this diffstat:
.../memory-controllers/synopsys,ddrc-ecc.yaml | 1 +
drivers/edac/Kconfig | 2 +-
drivers/edac/amd64_edac.c | 36 ++++++++++++++-
drivers/edac/amd64_edac.h | 8 +++-
drivers/edac/edac_mc.c | 2 +
drivers/edac/sb_edac.c | 2 +-
drivers/edac/sifive_edac.c | 2 +-
drivers/edac/synopsys_edac.c | 52 ++++++++++++++++++----
drivers/ras/cec.c | 2 +-
include/linux/edac.h | 6 +++
10 files changed, 98 insertions(+), 15 deletions(-)
And only this Kconfig change:
$ git diff HEAD^.. drivers/edac/Kconfig
diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index 2fc4c3f91fd5..58ab63642e72 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -484,7 +484,7 @@ config EDAC_ARMADA_XP
config EDAC_SYNOPSYS
tristate "Synopsys DDR Memory Controller"
- depends on ARCH_ZYNQ || ARCH_ZYNQMP
+ depends on ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_INTEL_SOCFPGA
help
Support for error detection and correction on the Synopsys DDR
memory controller.
I noticed that the following files have changed (timestamp at least) in
the object directory:
-rw-r--r-- 1 sfr users 46271 Jan 7 17:09 ./include/config/auto.conf.cmd
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/DEFAULT_TCP_CONG
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/DEFAULT_INIT
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/BUILD_SALT
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/RTC_SYSTOHC_DEVICE
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/EXTRA_TARGETS
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/CC_IMPLICIT_FALLTHROUGH
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/RTC_HCTOSYS_DEVICE
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/EXTRA_FIRMWARE
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/DEFAULT_HOSTNAME
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/CC_VERSION_TEXT
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/MODPROBE_PATH
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/LOCALVERSION
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/INITRAMFS_SOURCE
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/FAT_DEFAULT_IOCHARSET
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/CMDLINE
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/NLS_DEFAULT
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/MAGIC_SYSRQ_SERIAL_SEQUENCE
-rw-r--r-- 1 sfr users 0 Jan 7 17:09 ./include/config/LSM
-rw-r--r-- 1 sfr users 54294 Jan 7 17:09 ./include/generated/autoconf.h
-rw-r--r-- 1 sfr users 39198 Jan 7 17:09 ./include/config/auto.conf
then lots more is rebuilt.
--
Cheers,
Stephen Rothwell
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