From: Joe Perches <joe@perches.com>
To: Randy Dunlap <rdunlap@infradead.org>,
linux-kernel-mentees@lists.linuxfoundation.org
Cc: LKML <linux-kernel@vger.kernel.org>,
kernel-janitors <kernel-janitors@vger.kernel.org>
Subject: Re: patch suggestion: Kconfig symbols
Date: Wed, 28 Jul 2021 08:37:26 -0700 [thread overview]
Message-ID: <e77e2329bdafdbea538be0d7edb8a9d7d3e45990.camel@perches.com> (raw)
In-Reply-To: <295b8f8c-4264-9f32-6723-9d2d574021ac@infradead.org>
On Mon, 2021-07-26 at 17:21 -0700, Randy Dunlap wrote:
> Running scripts/checkkconfigsymbols.py reports several hundred (maybe thousand)
> Kconfig symbols that are used questionably. Lots of these are false positives
> but lots of the remainder could use some cleaning up.
[]
> False positive example:
>
> XCHOFFLD_MEM
> Referencing files: drivers/scsi/qla2xxx/qla_mbx.c
> Similar symbols: OF_PMEM, CXL_MEM, CXL_PMEM
>
> The Referencing source file does this:
> #define CONFIG_XCHOFFLD_MEM 0x3
>
> which is legitimate, so no change is needed.
Legitimate is perhaps dubious.
It might be better if Kconfig has exclusive use of CONFIG_<foo> naming so
renaming all the other existing CONFIG_<foo> defines might be appropriate.
$ git grep -P '^\s*#\s*define\s+CONFIG_[A-Z]+\b'
arch/alpha/kernel/smc37c93x.c:#define CONFIG_CONTROL 0x02
arch/sh/drivers/pci/ops-sh4.c:#define CONFIG_CMD(bus, devfn, where) \
arch/sh/include/asm/smc37c93x.h:#define CONFIG_PORT 0x3f0
arch/sh/include/asm/smc37c93x.h:#define CONFIG_ENTER 0x55
arch/sh/include/asm/smc37c93x.h:#define CONFIG_EXIT 0xaa
arch/sparc/kernel/pcic.c:#define CONFIG_CMD(bus, device_fn, where) (0x80000000 | (((unsigned int)bus) << 16) | (((unsigned int)device_fn) << 8) | (where & ~3))
arch/um/drivers/mconsole_kern.h:#define CONFIG_CHUNK(str, size, current, chunk, end) \
drivers/atm/he.h:#define CONFIG_RSRA 0x00000
drivers/atm/he.h:#define CONFIG_RCMLBM 0x08000
drivers/atm/he.h:#define CONFIG_RCMABR 0x0d800
drivers/atm/he.h:#define CONFIG_RSRB 0x0e000
drivers/atm/he.h:#define CONFIG_TSRA 0x00000
drivers/atm/he.h:#define CONFIG_TSRB 0x08000
drivers/atm/he.h:#define CONFIG_TSRC 0x0c000
drivers/atm/he.h:#define CONFIG_TSRD 0x0e000
drivers/atm/he.h:#define CONFIG_TMABR 0x0f000
drivers/atm/he.h:#define CONFIG_TPDBA 0x10000
drivers/comedi/drivers/ni_at_a2150.c:#define CONFIG_REG 0x0
drivers/crypto/atmel-i2c.h:#define CONFIG_ZONE 0
drivers/dma/idxd/perfmon.h:#define CONFIG_RESET 0x0000000000000001
drivers/gpu/drm/amd/amdgpu/sid.h:#define CONFIG_MEMSIZE 0x150A
drivers/gpu/drm/amd/amdgpu/sid.h:#define CONFIG_CNTL 0x1509
drivers/gpu/drm/radeon/cikd.h:#define CONFIG_MEMSIZE 0x5428
drivers/gpu/drm/radeon/evergreend.h:#define CONFIG_MEMSIZE 0x5428
drivers/gpu/drm/radeon/nid.h:#define CONFIG_MEMSIZE 0x5428
drivers/gpu/drm/radeon/r600d.h:#define CONFIG_MEMSIZE 0x5428
drivers/gpu/drm/radeon/r600d.h:#define CONFIG_CNTL 0x5424
drivers/gpu/drm/radeon/rv515d.h:#define CONFIG_MEMSIZE 0x00F8
drivers/gpu/drm/radeon/rv770d.h:#define CONFIG_MEMSIZE 0x5428
drivers/gpu/drm/radeon/sid.h:#define CONFIG_MEMSIZE 0x5428
drivers/macintosh/therm_adt746x.c:#define CONFIG_REG 0x40
drivers/memory/ti-aemif.c:#define CONFIG_MASK (TA(TA_MAX) | \
drivers/mtd/spi-nor/controllers/aspeed-smc.c:#define CONFIG_REG 0x0
drivers/net/ethernet/smsc/smc91x.h:#define CONFIG_REG(lp) SMC_REG(lp, 0x0000, 1)
drivers/net/ethernet/smsc/smc91x.h:#define CONFIG_GPCNTRL 0x0400 // Inverse value drives pin nCNTRL
drivers/net/ethernet/smsc/smc91x.h:#define CONFIG_DEFAULT (CONFIG_EPH_POWER_EN)
drivers/pcmcia/cs_internal.h:#define CONFIG_LOCKED 0x01
drivers/pinctrl/mvebu/pinctrl-dove.c:#define CONFIG_PMU BIT(4)
drivers/staging/vt6655/device_cfg.h:#define CONFIG_PATH "/etc/vntconfiguration.dat"
drivers/staging/vt6656/device.h:#define CONFIG_PATH "/etc/vntconfiguration.dat"
drivers/thermal/qcom/tsens-8960.c:#define CONFIG_ADDR 0x3640
drivers/thermal/qcom/tsens-8960.c:#define CONFIG_MASK 0xf
drivers/usb/host/xhci.h:#define CONFIG_CIE (1 << 9)
drivers/video/fbdev/geode/display_gx1.h:#define CONFIG_GCR 0xb8
tools/power/x86/intel-speed-select/isst.h:#define CONFIG_TDP 0x7f
tools/power/x86/intel-speed-select/isst.h:#define CONFIG_CLOS 0xd0
tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h:#define CONFIG_ALTIVEC
tools/testing/selftests/powerpc/stringloops/asm/ppc_asm.h:#define CONFIG_ALTIVEC
tools/testing/selftests/rcutorture/formal/srcu-cbmc/src/config.h:#define CONFIG_SMP
tools/virtio/linux/kernel.h:#define CONFIG_SMP
next parent reply other threads:[~2021-07-28 15:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <295b8f8c-4264-9f32-6723-9d2d574021ac@infradead.org>
2021-07-28 15:37 ` Joe Perches [this message]
2021-07-28 19:41 ` patch suggestion: Kconfig symbols Randy Dunlap
2021-07-28 21:30 ` Joe Perches
2021-07-28 22:55 ` Randy Dunlap
2021-07-29 9:55 ` Greg KH
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