* Re: patch suggestion: Kconfig symbols [not found] <295b8f8c-4264-9f32-6723-9d2d574021ac@infradead.org> @ 2021-07-28 15:37 ` Joe Perches 2021-07-28 19:41 ` Randy Dunlap 2021-07-29 9:55 ` Greg KH 0 siblings, 2 replies; 5+ messages in thread From: Joe Perches @ 2021-07-28 15:37 UTC (permalink / raw) To: Randy Dunlap, linux-kernel-mentees; +Cc: LKML, kernel-janitors 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 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: patch suggestion: Kconfig symbols 2021-07-28 15:37 ` patch suggestion: Kconfig symbols Joe Perches @ 2021-07-28 19:41 ` Randy Dunlap 2021-07-28 21:30 ` Joe Perches 2021-07-29 9:55 ` Greg KH 1 sibling, 1 reply; 5+ messages in thread From: Randy Dunlap @ 2021-07-28 19:41 UTC (permalink / raw) To: Joe Perches, linux-kernel-mentees; +Cc: LKML, kernel-janitors On 7/28/21 8:37 AM, Joe Perches wrote: > 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. I would prefer that as well -- maybe 15 years ago. But I think it's too invasive to make that change now. > > $ 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 > > -- ~Randy ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: patch suggestion: Kconfig symbols 2021-07-28 19:41 ` Randy Dunlap @ 2021-07-28 21:30 ` Joe Perches 2021-07-28 22:55 ` Randy Dunlap 0 siblings, 1 reply; 5+ messages in thread From: Joe Perches @ 2021-07-28 21:30 UTC (permalink / raw) To: Randy Dunlap; +Cc: linux-kernel-mentees, LKML, kernel-janitors On 2021-07-28 12:41, Randy Dunlap wrote: > On 7/28/21 8:37 AM, Joe Perches wrote: >> 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. > > I would prefer that as well -- maybe 15 years ago. > But I think it's too invasive to make that change now. I do not think it's that invasive. It's something that doesn't have to be done immediately either. It's not too many macro defines and not too many uses of those defines. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: patch suggestion: Kconfig symbols 2021-07-28 21:30 ` Joe Perches @ 2021-07-28 22:55 ` Randy Dunlap 0 siblings, 0 replies; 5+ messages in thread From: Randy Dunlap @ 2021-07-28 22:55 UTC (permalink / raw) To: Joe Perches; +Cc: linux-kernel-mentees, LKML, kernel-janitors On 7/28/21 2:30 PM, Joe Perches wrote: > On 2021-07-28 12:41, Randy Dunlap wrote: >> On 7/28/21 8:37 AM, Joe Perches wrote: >>> 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. >> >> I would prefer that as well -- maybe 15 years ago. >> But I think it's too invasive to make that change now. > > I do not think it's that invasive. > > It's something that doesn't have to be done immediately either. > > It's not too many macro defines and not too many uses of those defines. OK :) I'm not trying to prevent such a change. Getting the exclusive use of CONFIG_symbols being dedicated to Kconfig namespace is the bug hurdle (IMO). -- ~Randy ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: patch suggestion: Kconfig symbols 2021-07-28 15:37 ` patch suggestion: Kconfig symbols Joe Perches 2021-07-28 19:41 ` Randy Dunlap @ 2021-07-29 9:55 ` Greg KH 1 sibling, 0 replies; 5+ messages in thread From: Greg KH @ 2021-07-29 9:55 UTC (permalink / raw) To: Joe Perches; +Cc: Randy Dunlap, linux-kernel-mentees, kernel-janitors, LKML On Wed, Jul 28, 2021 at 08:37:26AM -0700, Joe Perches wrote: > drivers/staging/vt6655/device_cfg.h:#define CONFIG_PATH "/etc/vntconfiguration.dat" > drivers/staging/vt6656/device.h:#define CONFIG_PATH "/etc/vntconfiguration.dat" This can be removed right now, I'll go do that, this is totally unused... thanks, greg k-h ^ permalink raw reply [flat|nested] 5+ messages in thread
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2021-07-28 15:37 ` patch suggestion: Kconfig symbols Joe Perches
2021-07-28 19:41 ` 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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