From: Nicolas Pitre <nicolas.pitre@linaro.org>
To: John Stultz <john.stultz@linaro.org>,
Richard Cochran <richardcochran@gmail.com>,
Yann E MORIN <yann.morin.1998@free.fr>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Josh Triplett <josh@joshtriplett.org>,
netdev@vger.kernel.org, linux-kbuild@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 0/4] make POSIX timers optional with some Kconfig help
Date: Wed, 19 Oct 2016 19:42:49 -0400 [thread overview]
Message-ID: <1476920573-14384-1-git-send-email-nicolas.pitre@linaro.org> (raw)
Many embedded systems don't need the full POSIX timer support.
Configuring them out provides a nice kernel image size reduction.
When POSIX timers are configured out, the PTP clock subsystem should be
left out as well. However a bunch of ethernet drivers currently *select*
the later in their Kconfig entries. Therefore some more work was needed
to break that hard dependency from those drivers without preventing their
usage altogether.
Therefore this series also includes kconfig changes to implement a new
keyword to express some reverse dependencies like "select" does, named
"imply", and still allowing for the target config symbol to be disabled
if the user or a direct dependency says so.
How to deal with the dependencies across three subsystems for potential
upstream merging needs to be figured out.
The bulk of the diffstat comes from the kconfig lex parser regeneration.
diffstat:
Documentation/kbuild/kconfig-language.txt | 28 +
drivers/Makefile | 2 +-
drivers/net/ethernet/adi/Kconfig | 2 +-
drivers/net/ethernet/amd/Kconfig | 2 +-
drivers/net/ethernet/amd/xgbe/xgbe-main.c | 6 +-
drivers/net/ethernet/broadcom/Kconfig | 4 +-
drivers/net/ethernet/cavium/Kconfig | 2 +-
drivers/net/ethernet/freescale/Kconfig | 2 +-
drivers/net/ethernet/intel/Kconfig | 10 +-
drivers/net/ethernet/mellanox/mlx4/Kconfig | 2 +-
drivers/net/ethernet/mellanox/mlx5/core/Kconfig | 2 +-
drivers/net/ethernet/renesas/Kconfig | 2 +-
drivers/net/ethernet/samsung/Kconfig | 2 +-
drivers/net/ethernet/sfc/Kconfig | 2 +-
drivers/net/ethernet/stmicro/stmmac/Kconfig | 2 +-
drivers/net/ethernet/ti/Kconfig | 2 +-
drivers/net/ethernet/tile/Kconfig | 2 +-
drivers/ptp/Kconfig | 10 +-
include/linux/posix-timers.h | 28 +-
include/linux/ptp_clock_kernel.h | 65 +-
include/linux/sched.h | 10 +
init/Kconfig | 17 +
kernel/signal.c | 4 +
kernel/time/Makefile | 10 +-
kernel/time/posix-stubs.c | 118 ++
scripts/kconfig/expr.h | 2 +
scripts/kconfig/menu.c | 55 +-
scripts/kconfig/symbol.c | 26 +-
scripts/kconfig/zconf.gperf | 1 +
scripts/kconfig/zconf.hash.c_shipped | 30 +-
scripts/kconfig/zconf.tab.c_shipped | 1581 ++++++++---------
scripts/kconfig/zconf.y | 16 +-
32 files changed, 1115 insertions(+), 932 deletions(-)
next reply other threads:[~2016-10-19 23:42 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-19 23:42 Nicolas Pitre [this message]
2016-10-19 23:42 ` [PATCH 1/4] kconfig: introduce the "imply" keyword Nicolas Pitre
2016-10-20 6:53 ` Masahiro Yamada
2016-10-20 14:52 ` Edward Cree
2016-10-20 15:38 ` Josh Triplett
2016-10-20 17:04 ` Nicolas Pitre
2016-10-20 17:41 ` Edward Cree
2016-10-20 18:29 ` Nicolas Pitre
2016-10-20 19:09 ` Edward Cree
2016-10-20 20:10 ` Nicolas Pitre
2016-10-21 3:24 ` Nicolas Pitre
2016-10-19 23:42 ` [PATCH 2/4] kconfig: re-generate *.c_shipped files after previous change Nicolas Pitre
2016-10-19 23:42 ` [PATCH 3/4] ptp_clock: allow for it to be optional Nicolas Pitre
2016-10-20 9:50 ` Thomas Gleixner
2016-10-20 17:47 ` Nicolas Pitre
2016-10-20 17:58 ` Thomas Gleixner
2016-10-20 14:06 ` Richard Cochran
2016-10-20 15:38 ` Josh Triplett
2016-10-20 16:44 ` Nicolas Pitre
2016-10-19 23:42 ` [PATCH 4/4] posix-timers: make it configurable Nicolas Pitre
2016-10-20 14:02 ` Richard Cochran
2016-10-20 16:41 ` Nicolas Pitre
2016-10-20 9:46 ` [PATCH 0/4] make POSIX timers optional with some Kconfig help Thomas Gleixner
2016-10-20 18:35 ` Nicolas Pitre
2016-10-20 18:51 ` Josh Triplett
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