| Message ID | 20200731064012.8076-11-tingwei@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | coresight: allow to build coresight as modules | expand |
On Fri, 31 Jul 2020 at 07:41, Tingwei Zhang <tingwei@codeaurora.org> wrote: > > From: Kim Phillips <kim.phillips@arm.com> > > Allow to build coresight-etm4x as a module, for ease of development. > > - Kconfig becomes a tristate, to allow =m > - append -core to source file name to allow module to > be called coresight-etm4x by the Makefile > - add an etm4_remove function, for module unload > - add a MODULE_DEVICE_TABLE for autoloading on boot > > Cc: Mathieu Poirier <mathieu.poirier@linaro.org> > Cc: Leo Yan <leo.yan@linaro.org> > Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> > Cc: Randy Dunlap <rdunlap@infradead.org> > Cc: Suzuki K Poulose <Suzuki.Poulose@arm.com> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Cc: Russell King <linux@armlinux.org.uk> > Signed-off-by: Kim Phillips <kim.phillips@arm.com> > Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> > --- > drivers/hwtracing/coresight/Kconfig | 5 +++- > drivers/hwtracing/coresight/Makefile | 4 +-- > ...resight-etm4x.c => coresight-etm4x-core.c} | 26 ++++++++++++++++++- > 3 files changed, 31 insertions(+), 4 deletions(-) > rename drivers/hwtracing/coresight/{coresight-etm4x.c => coresight-etm4x-core.c} (98%) > > diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig > index 8fd9fd139cf3..d6e107bbd30b 100644 > --- a/drivers/hwtracing/coresight/Kconfig > +++ b/drivers/hwtracing/coresight/Kconfig > @@ -78,7 +78,7 @@ config CORESIGHT_SOURCE_ETM3X > module will be called coresight-etm3x. > > config CORESIGHT_SOURCE_ETM4X > - bool "CoreSight Embedded Trace Macrocell 4.x driver" > + tristate "CoreSight Embedded Trace Macrocell 4.x driver" > depends on ARM64 > select CORESIGHT_LINKS_AND_SINKS > select PID_IN_CONTEXTIDR > @@ -88,6 +88,9 @@ config CORESIGHT_SOURCE_ETM4X > for instruction level tracing. Depending on the implemented version > data tracing may also be available. > > + To compile this driver as a module, choose M here: the > + module will be called coresight-etm4x. > + > config CORESIGHT_STM > tristate "CoreSight System Trace Macrocell driver" > depends on (ARM && !(CPU_32v3 || CPU_32v4 || CPU_32v4T)) || ARM64 > diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile > index d619cfd0abd8..271dc255454f 100644 > --- a/drivers/hwtracing/coresight/Makefile > +++ b/drivers/hwtracing/coresight/Makefile > @@ -14,8 +14,8 @@ obj-$(CONFIG_CORESIGHT_LINKS_AND_SINKS) += coresight-funnel.o \ > obj-$(CONFIG_CORESIGHT_SOURCE_ETM3X) += coresight-etm3x.o > coresight-etm3x-y := coresight-etm3x-core.o coresight-etm-cp14.o \ > coresight-etm3x-sysfs.o > -obj-$(CONFIG_CORESIGHT_SOURCE_ETM4X) += coresight-etm4x.o \ > - coresight-etm4x-sysfs.o > +obj-$(CONFIG_CORESIGHT_SOURCE_ETM4X) += coresight-etm4x.o > +coresight-etm4x-y := coresight-etm4x-core.o coresight-etm4x-sysfs.o > obj-$(CONFIG_CORESIGHT_STM) += coresight-stm.o > obj-$(CONFIG_CORESIGHT_CPU_DEBUG) += coresight-cpu-debug.o > obj-$(CONFIG_CORESIGHT_CATU) += coresight-catu.o > diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c > similarity index 98% > rename from drivers/hwtracing/coresight/coresight-etm4x.c > rename to drivers/hwtracing/coresight/coresight-etm4x-core.c > index 6d7d2169bfb2..8149853d5e9d 100644 > --- a/drivers/hwtracing/coresight/coresight-etm4x.c > +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c > @@ -1573,6 +1573,21 @@ static struct amba_cs_uci_id uci_id_etm4[] = { > } > }; > > +static int __exit etm4_remove(struct amba_device *adev) > +{ > + struct etmv4_drvdata *drvdata = dev_get_drvdata(&adev->dev); > + > + etm_perf_symlink(drvdata->csdev, false); > + > + etmdrvdata[drvdata->cpu] = NULL; > + etm4_pm_clear(); > + > + coresight_unregister(drvdata->csdev); > + > + return 0; > +} > + > + > static const struct amba_id etm4_ids[] = { > CS_AMBA_ID(0x000bb95d), /* Cortex-A53 */ > CS_AMBA_ID(0x000bb95e), /* Cortex-A57 */ > @@ -1590,12 +1605,21 @@ static const struct amba_id etm4_ids[] = { > {}, > }; > > +MODULE_DEVICE_TABLE(amba, etm4_ids); > + > static struct amba_driver etm4x_driver = { > .drv = { > .name = "coresight-etm4x", > + .owner = THIS_MODULE, > .suppress_bind_attrs = true, > }, > .probe = etm4_probe, > + .remove = etm4_remove, > .id_table = etm4_ids, > }; > -builtin_amba_driver(etm4x_driver); > +module_amba_driver(etm4x_driver); > + > +MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>"); > +MODULE_AUTHOR("Mathieu Poirier <mathieu.poirier@linaro.org>"); > +MODULE_DESCRIPTION("Arm CoreSight Program Flow Trace v4 driver"); > +MODULE_LICENSE("GPL v2"); > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project > Tested by: Mike Leach <mike.leach@linaro.org> -- Mike Leach Principal Engineer, ARM Ltd. Manchester Design Centre. UK
diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig index 8fd9fd139cf3..d6e107bbd30b 100644 --- a/drivers/hwtracing/coresight/Kconfig +++ b/drivers/hwtracing/coresight/Kconfig @@ -78,7 +78,7 @@ config CORESIGHT_SOURCE_ETM3X module will be called coresight-etm3x. config CORESIGHT_SOURCE_ETM4X - bool "CoreSight Embedded Trace Macrocell 4.x driver" + tristate "CoreSight Embedded Trace Macrocell 4.x driver" depends on ARM64 select CORESIGHT_LINKS_AND_SINKS select PID_IN_CONTEXTIDR @@ -88,6 +88,9 @@ config CORESIGHT_SOURCE_ETM4X for instruction level tracing. Depending on the implemented version data tracing may also be available. + To compile this driver as a module, choose M here: the + module will be called coresight-etm4x. + config CORESIGHT_STM tristate "CoreSight System Trace Macrocell driver" depends on (ARM && !(CPU_32v3 || CPU_32v4 || CPU_32v4T)) || ARM64 diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile index d619cfd0abd8..271dc255454f 100644 --- a/drivers/hwtracing/coresight/Makefile +++ b/drivers/hwtracing/coresight/Makefile @@ -14,8 +14,8 @@ obj-$(CONFIG_CORESIGHT_LINKS_AND_SINKS) += coresight-funnel.o \ obj-$(CONFIG_CORESIGHT_SOURCE_ETM3X) += coresight-etm3x.o coresight-etm3x-y := coresight-etm3x-core.o coresight-etm-cp14.o \ coresight-etm3x-sysfs.o -obj-$(CONFIG_CORESIGHT_SOURCE_ETM4X) += coresight-etm4x.o \ - coresight-etm4x-sysfs.o +obj-$(CONFIG_CORESIGHT_SOURCE_ETM4X) += coresight-etm4x.o +coresight-etm4x-y := coresight-etm4x-core.o coresight-etm4x-sysfs.o obj-$(CONFIG_CORESIGHT_STM) += coresight-stm.o obj-$(CONFIG_CORESIGHT_CPU_DEBUG) += coresight-cpu-debug.o obj-$(CONFIG_CORESIGHT_CATU) += coresight-catu.o diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c similarity index 98% rename from drivers/hwtracing/coresight/coresight-etm4x.c rename to drivers/hwtracing/coresight/coresight-etm4x-core.c index 6d7d2169bfb2..8149853d5e9d 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -1573,6 +1573,21 @@ static struct amba_cs_uci_id uci_id_etm4[] = { } }; +static int __exit etm4_remove(struct amba_device *adev) +{ + struct etmv4_drvdata *drvdata = dev_get_drvdata(&adev->dev); + + etm_perf_symlink(drvdata->csdev, false); + + etmdrvdata[drvdata->cpu] = NULL; + etm4_pm_clear(); + + coresight_unregister(drvdata->csdev); + + return 0; +} + + static const struct amba_id etm4_ids[] = { CS_AMBA_ID(0x000bb95d), /* Cortex-A53 */ CS_AMBA_ID(0x000bb95e), /* Cortex-A57 */ @@ -1590,12 +1605,21 @@ static const struct amba_id etm4_ids[] = { {}, }; +MODULE_DEVICE_TABLE(amba, etm4_ids); + static struct amba_driver etm4x_driver = { .drv = { .name = "coresight-etm4x", + .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = etm4_probe, + .remove = etm4_remove, .id_table = etm4_ids, }; -builtin_amba_driver(etm4x_driver); +module_amba_driver(etm4x_driver); + +MODULE_AUTHOR("Pratik Patel <pratikp@codeaurora.org>"); +MODULE_AUTHOR("Mathieu Poirier <mathieu.poirier@linaro.org>"); +MODULE_DESCRIPTION("Arm CoreSight Program Flow Trace v4 driver"); +MODULE_LICENSE("GPL v2");