From: Nicolas Pitre <nicolas.pitre@xxxxxxxxxx> Subject: [PATCH v2 0/5] make POSIX timers optional with some Kconfig help 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. The "suggest" keyword is also provided to complement "imply" but without the restrictions from "imply" or "select". At this point I'd like to gather ACKs especially from people in the "To" field. Ideally this would need to go upstream as a single series to avoid cross subsystem dependency issues, and we should decide which maintainer tree to use. Suggestions welcome. Changes from v1: - added "suggest" to kconfig for completeness - various typo fixes - small "imply" effect visibility fix The bulk of the diffstat comes from the kconfig lex parser regeneration. Diffstat: Documentation/kbuild/kconfig-language.txt | 34 + 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 | 4 + scripts/kconfig/menu.c | 68 +- scripts/kconfig/symbol.c | 42 +- scripts/kconfig/zconf.gperf | 2 + scripts/kconfig/zconf.hash.c_shipped | 228 +-- scripts/kconfig/zconf.tab.c_shipped | 1631 ++++++++--------- scripts/kconfig/zconf.y | 28 +- 32 files changed, 1300 insertions(+), 1045 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
