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2021-01-21intel_th: pci: Add Alder Lake-P supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Alder Lake-P. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20210115195917.3184-3-alexander.shishkin@linux.intel.com Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-21stm class: Fix module init return on allocation failureWang Hui1-2/+4
In stm_heartbeat_init(): return value gets reset after the first iteration by stm_source_register_device(), so allocation failures after that will, after a clean up, return success. Fix that. Fixes: 119291853038 ("stm class: Add heartbeat stm source device") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Hui <john.wanghui@huawei.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20210115195917.3184-2-alexander.shishkin@linux.intel.com Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-16Merge tag 'char-misc-5.11-rc1' of ↵Linus Torvalds16-44/+188
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc driver updates from Greg KH: "Here is the big char/misc driver update for 5.11-rc1. Continuing the tradition of previous -rc1 pulls, there seems to be more and more tiny driver subsystems flowing through this tree. Lots of different things, all of which have been in linux-next for a while with no reported issues: - extcon driver updates - habannalab driver updates - mei driver updates - uio driver updates - binder fixes and features added - soundwire driver updates - mhi bus driver updates - phy driver updates - coresight driver updates - fpga driver updates - speakup driver updates - slimbus driver updates - various small char and misc driver updates" * tag 'char-misc-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (305 commits) extcon: max77693: Fix modalias string extcon: fsa9480: Support TI TSU6111 variant extcon: fsa9480: Rewrite bindings in YAML and extend dt-bindings: extcon: add binding for TUSB320 extcon: Add driver for TI TUSB320 slimbus: qcom: fix potential NULL dereference in qcom_slim_prg_slew() siox: Make remove callback return void siox: Use bus_type functions for probe, remove and shutdown spmi: Add driver shutdown support spmi: fix some coding style issues at the spmi core spmi: get rid of a warning when built with W=1 uio: uio_hv_generic: use devm_kzalloc() for private data alloc uio: uio_fsl_elbc_gpcm: use device-managed allocators uio: uio_aec: use devm_kzalloc() for uio_info object uio: uio_cif: use devm_kzalloc() for uio_info object uio: uio_netx: use devm_kzalloc() for or uio_info object uio: uio_mf624: use devm_kzalloc() for uio_info object uio: uio_sercos3: use device-managed functions for simple allocs uio: uio_dmem_genirq: finalize conversion of probe to devm_ handlers uio: uio_dmem_genirq: convert simple allocations to device-managed ...
2020-12-15hwtracing: intel: use krealloc_array()Bartosz Golaszewski1-1/+1
Use the helper that checks for overflows internally instead of manually calculating the size of the new array. Link: https://lkml.kernel.org/r/20201109110654.12547-9-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Christian Knig <christian.koenig@amd.com> Cc: Christoph Lameter <cl@linux.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Cc: David Rientjes <rientjes@google.com> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: James Morse <james.morse@arm.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Jason Wang <jasowang@redhat.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Maxime Ripard <mripard@kernel.org> Cc: "Michael S . Tsirkin" <mst@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Robert Richter <rric@kernel.org> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Takashi Iwai <tiwai@suse.com> Cc: Takashi Iwai <tiwai@suse.de> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-08coresight: etm4x: Modify core-commit to avoid HiSilicon ETM overflowQi Liu3-0/+114
The ETM device can't keep up with the core pipeline when cpu core is at full speed. This may cause overflow within core and its ETM. This is a common phenomenon on ETM devices. On HiSilicon Hip08 platform, a specific feature is added to set core pipeline. So commit rate can be reduced manually to avoid ETM overflow. Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Qi Liu <liuqi115@huawei.com> [Modified changelog title and Kconfig description] Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201208182651.1597945-4-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-08coresight: remove broken __exit annotationsArnd Bergmann10-16/+16
Functions that are annotated __exit are discarded for built-in drivers, but the .remove callback in a device driver must still be kept around to allow bind/unbind operations. There is now a linker warning for the discarded symbol references: `tmc_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-tmc-core.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-tmc-core.o `tpiu_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-tpiu.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-tpiu.o `etb_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-etb10.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-etb10.o `static_funnel_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-funnel.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-funnel.o `dynamic_funnel_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-funnel.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-funnel.o `static_replicator_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-replicator.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-replicator.o `dynamic_replicator_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-replicator.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-replicator.o `catu_remove' referenced in section `.data' of drivers/hwtracing/coresight/coresight-catu.o: defined in discarded section `.exit.text' of drivers/hwtracing/coresight/coresight-catu.o Remove all those annotations. Fixes: 8b0cf82677d1 ("coresight: stm: Allow to build coresight-stm as a module") Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201208182651.1597945-3-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-08coresight: tmc-etr: Fix barrier packet insertion for perf bufferSuzuki K Poulose1-1/+1
When the ETR is used in perf mode with a larger buffer (configured via sysfs or the default size of 1M) than the perf aux buffer size, we end up inserting the barrier packet at the wrong offset, while moving the offset forward. i.e, instead of the "new moved offset", we insert it at the current hardware buffer offset. These packets will not be visible as they are never copied and could lead to corruption in the trace decoding side, as the decoder is not aware that it needs to reset the decoding. Fixes: ec13c78d7b45 ("coresight: tmc-etr: Add barrier packets when moving offset forward") Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org Reported-by: Al Grant <al.grant@arm.com> Tested-by: Mike Leach <mike.leach@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201208182651.1597945-2-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight-stm: Fix W=1 warning in STM driverMathieu Poirier1-1/+1
CC drivers/hwtracing/coresight/coresight-cti-core.o CC drivers/hwtracing/coresight/coresight-cti-platform.o CC drivers/hwtracing/coresight/coresight-cti-sysfs.o drivers/hwtracing/coresight/coresight-stm.c:109: warning: Function parameter or member 'guaranteed' not described in 'channel_space' Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-16-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight-tpiu: Fix W=1 warning in TPIU driverMathieu Poirier1-1/+1
CC drivers/hwtracing/coresight/coresight-etm4x-core.o CC drivers/hwtracing/coresight/coresight-etm4x-sysfs.o CC drivers/hwtracing/coresight/coresight-stm.o drivers/hwtracing/coresight/coresight-tpiu.c:53: warning: Cannot understand * @base: memory mapped base address for this component. on line 53 - I thought it was a doc line CC drivers/hwtracing/coresight/coresight-cpu-debug.o CC drivers/hwtracing/coresight/coresight-catu.o Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-15-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: Fix W=1 warnings in core frameworkMathieu Poirier1-1/+7
CC drivers/hwtracing/coresight/coresight-etm4x-sysfs.o CC drivers/hwtracing/coresight/coresight-stm.o drivers/hwtracing/coresight/coresight-core.c:440: warning: Function parameter or member 'csdev' not described in 'coresight_disable_source' drivers/hwtracing/coresight/coresight-core.c:670: warning: Function parameter or member 'csdev' not described in 'coresight_get_ref' drivers/hwtracing/coresight/coresight-core.c:687: warning: Function parameter or member 'csdev' not described in 'coresight_put_ref' drivers/hwtracing/coresight/coresight-core.c:758: warning: Function parameter or member 'sink' not described in '_coresight_build_path' CC drivers/hwtracing/coresight/coresight-cpu-debug.o CC drivers/hwtracing/coresight/coresight-catu.o Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-14-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: tmc-etr: Check if page is valid before dma_map_page()Mao Jinlong1-0/+2
alloc_pages_node() return should be checked before calling dma_map_page() to make sure that valid page is mapped or else it can lead to aborts as below: Unable to handle kernel paging request at virtual address ffffffc008000000 Mem abort info: <snip>... pc : __dma_inv_area+0x40/0x58 lr : dma_direct_map_page+0xd8/0x1c8 Call trace: __dma_inv_area tmc_pages_alloc tmc_alloc_data_pages tmc_alloc_sg_table tmc_init_etr_sg_table tmc_alloc_etr_buf tmc_enable_etr_sink_sysfs tmc_enable_etr_sink coresight_enable_path coresight_enable enable_source_store dev_attr_store sysfs_kf_write Fixes: 99443ea19e8b ("coresight: Add generic TMC sg table framework") Cc: stable@vger.kernel.org Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-13-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: tmc-etr: Assign boolean values to a bool variableKaixu Xia1-2/+2
Fix the following coccinelle warnings: ./drivers/hwtracing/coresight/coresight-tmc-etr.c:957:2-15: WARNING: Assignment of 0/1 to bool variable Fix them by assigning boolean values. Reported-by: Tosk Robot <tencent_os_robot@tencent.com> Signed-off-by: Kaixu Xia <kaixuxia@tencent.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-12-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: etb10: Fix possible NULL ptr dereference in etb_enable_perf()Sai Prakash Ranjan1-1/+3
There was a report of NULL pointer dereference in ETF enable path for perf CS mode with PID monitoring. It is almost 100% reproducible when the process to monitor is something very active such as chrome and with ETF as the sink, not ETR. But code path shows that ETB has a similar path as ETF, so there could be possible NULL pointer dereference crash in ETB as well. Currently in a bid to find the pid, the owner is dereferenced via task_pid_nr() call in etb_enable_perf() and with owner being NULL, we can get a NULL pointer dereference, so have a similar fix as ETF where we cache PID in alloc_buffer() callback which is called as the part of etm_setup_aux(). Fixes: 75d7dbd38824 ("coresight: etb10: Add support for CPU-wide trace scenarios") Cc: stable@vger.kernel.org Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-11-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: tmc-etf: Fix NULL ptr dereference in tmc_enable_etf_sink_perf()Sai Prakash Ranjan2-1/+5
There was a report of NULL pointer dereference in ETF enable path for perf CS mode with PID monitoring. It is almost 100% reproducible when the process to monitor is something very active such as chrome and with ETF as the sink and not ETR. Currently in a bid to find the pid, the owner is dereferenced via task_pid_nr() call in tmc_enable_etf_sink_perf() and with owner being NULL, we get a NULL pointer dereference. Looking at the ETR and other places in the kernel, ETF and the ETB are the only places trying to dereference the task(owner) in tmc_enable_etf_sink_perf() which is also called from the sched_in path as in the call trace. Owner(task) is NULL even in the case of ETR in tmc_enable_etr_sink_perf(), but since we cache the PID in alloc_buffer() callback and it is done as part of etm_setup_aux() when allocating buffer for ETR sink, we never dereference this NULL pointer and we are safe. So lets do the same thing with ETF and cache the PID to which the cs_buffer belongs in tmc_alloc_etf_buffer() as done for ETR. This will also remove the unnecessary function calls(task_pid_nr()) since we are caching the PID. Easily reproducible running below: perf record -e cs_etm/@tmc_etf0/ -N -p <pid> Unable to handle kernel NULL pointer dereference at virtual address 0000000000000548 Mem abort info: ESR = 0x96000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 <snip>... Call trace: tmc_enable_etf_sink+0xe4/0x280 coresight_enable_path+0x168/0x1fc etm_event_start+0x8c/0xf8 etm_event_add+0x38/0x54 event_sched_in+0x194/0x2ac group_sched_in+0x54/0x12c flexible_sched_in+0xd8/0x120 visit_groups_merge+0x100/0x16c ctx_flexible_sched_in+0x50/0x74 ctx_sched_in+0xa4/0xa8 perf_event_sched_in+0x60/0x6c perf_event_context_sched_in+0x98/0xe0 __perf_event_task_sched_in+0x5c/0xd8 finish_task_switch+0x184/0x1cc schedule_tail+0x20/0xec ret_from_fork+0x4/0x18 Fixes: 880af782c6e8 ("coresight: tmc-etf: Add support for CPU-wide trace scenarios") Cc: stable@vger.kernel.org Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-10-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: Remove unnecessary THIS_MODULE of funnel and replicator driverQi Liu2-2/+2
As THIS_MODULE has been set in platform_driver_register(), so remove it from static funnel driver and static replicator driver to avoid set it twice. Signed-off-by: Qi Liu <liuqi115@huawei.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-9-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: etm4x: Handle TRCVIPCSSCTLR accessesSuzuki K Poulose1-4/+7
TRCVIPCSSCTLR is not present if the TRCIDR4.NUMPC > 0. Thus we should only access the register if it is present, preventing any undesired behavior. Cc: stable@vger.kernel.org Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-8-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: etm4x: Fix accesses to TRCPROCSELRSuzuki K Poulose1-4/+6
TRCPROCSELR is not implemented if the TRCIDR3.NUMPROC == 0. Skip accessing the register in such cases. Cc: stable@vger.kernel.org Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-7-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: etm4x: Update TRCIDR3.NUMPROCS handling to match v4.2Suzuki K Poulose1-2/+7
Since ETMv4.2, TRCIDR3.NUMPROCS has been extended to a 5bit field by encoding the top 2 bits[4:3] in TRCIDR3.[13:12], which were RES0. Fix the driver to compute the field correctly for ETMv4.2+ Cc: Mike Leach <mike.leach@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-6-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: etm4x: Fix accesses to TRCCIDCTLR1Suzuki K Poulose1-3/+6
The TRCCIDCTLR1 is only implemented if TRCIDR4.NUMCIDC > 4. Don't touch the register if it is not implemented. Cc: stable@vger.kernel.org Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-5-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: etm4x: Fix accesses to TRCVMIDCTLR1Suzuki K Poulose1-3/+6
TRCVMIDCTRL1 is only implemented only if the TRCIDR4.NUMVMIDC > 4. We must not touch the register otherwise. Cc: stable@vger.kernel.org Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-4-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: core: Remove unneeded semicolonZou Wei1-1/+1
Fixes coccicheck warning: ./drivers/hwtracing/coresight/coresight-core.c:421:4-5: Unneeded semicolon Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zou Wei <zou_wei@huawei.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-3-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-27coresight: etm4x: Skip setting LPOVERRIDE bit for qcom, skip-power-upSai Prakash Ranjan1-1/+1
There is a bug on the systems supporting to skip power up (qcom,skip-power-up) where setting LPOVERRIDE bit(low-power state override behaviour) will result in CPU hangs/lockups even on the implementations which supports it. So skip setting the LPOVERRIDE bit for such platforms. Fixes: 02510a5aa78d ("coresight: etm4x: Add support to skip trace unit power up") Cc: stable@vger.kernel.org Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201127175256.1092685-2-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-29coresight: cti: Initialize dynamic sysfs attributesSuzuki K Poulose1-0/+7
With LOCKDEP enabled, CTI driver triggers the following splat due to uninitialized lock class for dynamically allocated attribute objects. [ 5.372901] coresight etm0: CPU0: ETM v4.0 initialized [ 5.376694] coresight etm1: CPU1: ETM v4.0 initialized [ 5.380785] coresight etm2: CPU2: ETM v4.0 initialized [ 5.385851] coresight etm3: CPU3: ETM v4.0 initialized [ 5.389808] BUG: key ffff00000564a798 has not been registered! [ 5.392456] ------------[ cut here ]------------ [ 5.398195] DEBUG_LOCKS_WARN_ON(1) [ 5.398233] WARNING: CPU: 1 PID: 32 at kernel/locking/lockdep.c:4623 lockdep_init_map_waits+0x14c/0x260 [ 5.406149] Modules linked in: [ 5.415411] CPU: 1 PID: 32 Comm: kworker/1:1 Not tainted 5.9.0-12034-gbbe85027ce80 #51 [ 5.418553] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT) [ 5.426453] Workqueue: events amba_deferred_retry_func [ 5.433299] pstate: 40000005 (nZcv daif -PAN -UAO -TCO BTYPE=--) [ 5.438252] pc : lockdep_init_map_waits+0x14c/0x260 [ 5.444410] lr : lockdep_init_map_waits+0x14c/0x260 [ 5.449007] sp : ffff800012bbb720 ... [ 5.531561] Call trace: [ 5.536847] lockdep_init_map_waits+0x14c/0x260 [ 5.539027] __kernfs_create_file+0xa8/0x1c8 [ 5.543539] sysfs_add_file_mode_ns+0xd0/0x208 [ 5.548054] internal_create_group+0x118/0x3c8 [ 5.552307] internal_create_groups+0x58/0xb8 [ 5.556733] sysfs_create_groups+0x2c/0x38 [ 5.561160] device_add+0x2d8/0x768 [ 5.565148] device_register+0x28/0x38 [ 5.568537] coresight_register+0xf8/0x320 [ 5.572358] cti_probe+0x1b0/0x3f0 ... Fix this by initializing the attributes when they are allocated. Fixes: 3c5597e39812 ("coresight: cti: Add connection information to sysfs") Reported-by: Leo Yan <leo.yan@linaro.org> Tested-by: Leo Yan <leo.yan@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201029164559.1268531-2-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-29coresight: Fix uninitialised pointer bug in etm_setup_aux()Mike Leach1-1/+1
Commit [bb1860efc817] changed the sink handling code introducing an uninitialised pointer bug. This results in the default sink selection failing. Prior to commit: static void etm_setup_aux(...) <snip> struct coresight_device *sink; <snip> /* First get the selected sink from user space. */ if (event->attr.config2) { id = (u32)event->attr.config2; sink = coresight_get_sink_by_id(id); } else { sink = coresight_get_enabled_sink(true); } <ctd> *sink always initialised - possibly to NULL which triggers the automatic sink selection. After commit: static void etm_setup_aux(...) <snip> struct coresight_device *sink; <snip> /* First get the selected sink from user space. */ if (event->attr.config2) { id = (u32)event->attr.config2; sink = coresight_get_sink_by_id(id); } <ctd> *sink pointer uninitialised when not providing a sink on the perf command line. This breaks later checks to enable automatic sink selection. Fixes: bb1860efc817 ("coresight: etm: perf: Sink selection using sysfs is deprecated") Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201029164559.1268531-3-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-29coresight: add module licenseArnd Bergmann1-0/+1
When built as a loadable module, coresight now causes a warning about missing license information. WARNING: modpost: missing MODULE_LICENSE() in drivers/hwtracing/coresight/coresight.o Fixes: 8e264c52e1da ("coresight: core: Allow the coresight core driver to be built as a module") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20201026160205.3704789-1-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-05intel_th: pci: Add Alder Lake CPU supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Alder Lake CPU. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20201005071319.78508-9-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-05intel_th: pci: Add Alder Lake-S supportAlexander Shishkin1-0/+5
This adds support for the Trace Hub in Alder Lake-S. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20201005071319.78508-8-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-05stm class: ftrace: Use different channel accroding to CPUTingwei Zhang1-1/+4
To avoid mixup of packets from differnt ftrace packets simultaneously, use different channel for packets from different CPU. Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20201005071319.78508-7-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-05stm class: ftrace: Enable supported trace export flagTingwei Zhang1-0/+2
Set flags for trace_export. Export function trace, event trace and trace marker to stm. Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20201005071319.78508-6-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-05stm class: ftrace: Change dependency to TRACINGTingwei Zhang1-1/+1
We will support copying event trace to STM. Change STM_SOURCE_FTRACE to depend on TRACING since we will support multiple tracers. Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20201005071319.78508-2-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: etm4x: Fix save and restore of TRCVMIDCCTLR1 registerSai Prakash Ranjan1-2/+2
In commit f188b5e76aae ("coresight: etm4x: Save/restore state across CPU low power states"), mistakenly TRCVMIDCCTLR1 register value was saved in trcvmidcctlr0 state variable which is used to store TRCVMIDCCTLR0 register value in etm4x_cpu_save() and then same value is written back to both TRCVMIDCCTLR0 and TRCVMIDCCTLR1 in etm4x_cpu_restore(). There is already a trcvmidcctlr1 state variable available for TRCVMIDCCTLR1, so use it. Fixes: f188b5e76aae ("coresight: etm4x: Save/restore state across CPU low power states") Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-26-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: core: Allow the coresight core driver to be built as a moduleTingwei Zhang5-15/+48
Enhance coresight developer's efficiency to debug coresight drivers. - Kconfig becomes a tristate, to allow =m - append -core to source file name to allow module to be called coresight by the Makefile - modules can have only one init/exit, so we add the etm_perf register/unregister function calls to the core init/exit functions. - 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> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-25-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: catu: Allow catu drivers to be built as modulesTingwei Zhang2-1/+19
Allow to build coresight-catu as modules, for ease of development. - Kconfig becomes a tristate, to allow =m - add catu_remove functions, for module unload - add a MODULE_DEVICE_TABLE for autoloading on boot Reviewed-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-24-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: tmc-etr: Add function to register catu opsMian Yousaf Kaukab4-6/+36
Make etr_catu_buf_ops static. Instead of directly accessing it in etr_buf_ops[], add a function to let catu driver register the ops at runtime. Break circular dependency between tmc-etr and catu drivers. Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-23-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: cti: Allow cti to be built as a moduleTingwei Zhang5-5/+28
Allow to build coresight-cti 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-cti by the Makefile - add an cti_remove function, for module unload - add a MODULE_DEVICE_TABLE for autoloading on boot - move cti_remove_conn_xrefs to cti_remove since all sysfs links have gone when system calls device_release. Reviewed-by Mike Leach <mike.leach@linaro.org> Tested-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-22-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: cti: Increase reference count when enabling ctiTingwei Zhang1-3/+14
CTI device is enabled when associated coresight device is enabled. Increase the module and device reference count for CTI device when it's enabled. This can prevent CTI device be removed or module be unloaded when CTI device is enabled by an active trace session. Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-21-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: cti: Don't disable ect device if it's not enabledTingwei Zhang1-3/+8
If associated ect device is not enabled at first place, disable routine should not be called. Add ect_enabled flag to check whether ect device is enabled. Fix the issue in below case. Ect device is not available when associated coresight device enabled and the association is established after coresight device is enabled. Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-20-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: cti: Fix bug clearing sysfs links on callbackMike Leach2-3/+3
During module unload, a coresight driver module will call back into the CTI driver to remove any links between the two devices. The current code has 2 issues:- 1) in the CTI driver the matching code is matching to the wrong device so misses all the links. 2) The callback is called too late in the unload process resulting in a crash. This fixes both the issues. Fixes: 177af8285b59 ("coresight: cti: Enable CTI associated with devices") Reported-by: Tingwei Zhang <tingwei@codeaurora.org> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-19-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: cti: Fix remove sysfs link errorMike Leach1-3/+6
CTI code to remove sysfs link to other devices on shutdown, incorrectly tries to remove a single ended link when these are all double ended. This implementation leaves elements in the link info structure undefined which results in a crash in recent tests for driver module unload. This patch corrects the link removal code. Fixes: 73274abb6557 ("coresight: cti: Add in sysfs links to other coresight devices") Reported-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-18-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: cti: Add function to register cti associate opsTingwei Zhang3-16/+55
Add static cti_assoc_ops to coresight core driver. Let cti driver register the add_assoc and remove_assoc call back. Avoid coresight core driver to depend on cti driver. Tested-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-17-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: replicator: Allow replicator driver to be built as moduleKim Phillips2-3/+67
Allow to build coresight-replicator as modules, for ease of development. - Kconfig becomes a tristate, to allow =m - combine static and dynamic replicator init into single module_init/exit call - add replicator_remove functions, 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> Co-developed-by: Mian Yousaf Kaukab <ykaukab@suse.de> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-16-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: funnel: Allow funnel driver to be built as moduleKim Phillips1-2/+63
Allow to build coresight-funnel as module, for ease of development. - combine static and dynamic funnel init into single module_init/exit call - add funnel_remove functions, 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> Co-developed-by: Mian Yousaf Kaukab <ykaukab@suse.de> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-15-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: tmc: Allow tmc to be built as a moduleKim Phillips3-5/+32
Allow to build coresight-tmc 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-tmc by the Makefile - add an tmc_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> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-14-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: tpiu: Allow tpiu to be built as a moduleKim Phillips2-2/+23
Allow to build coresight-tpiu as a module, for ease of development. - Kconfig becomes a tristate, to allow =m - add a tpiu_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> Reviewed-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-13-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: etb: Allow etb to be built as a moduleKim Phillips2-2/+29
Allow to build coresight-etb10 as a module, for ease of development. - Kconfig becomes a tristate, to allow =m - add an etb_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> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-12-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: etm4x: Allow etm4x to be built as a moduleKim Phillips3-24/+69
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 - delay advertising the per-cpu etmdrvdata - protect etmdrvdata[] by modifying it on relevant CPU 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> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-11-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: etm3x: Allow etm3x to be built as a moduleKim Phillips3-42/+122
Allow to build coresight-etm3x 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-etm3x by the Makefile - add an etm_remove function, for module unload - add a MODULE_DEVICE_TABLE for autoloading on boot - delay advertising the per-cpu etmdrvdata - protect etmdrvdata[] by modifying it on relevant CPU 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> Reviewed-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-10-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: etm: perf: Fix warning caused by etm_setup_aux failureTingwei Zhang1-2/+2
When coresight_build_path() fails on all the cpus, etm_setup_aux calls etm_free_aux() to free allocated event_data. WARN_ON(cpumask_empty(mask) will be triggered since cpu mask is empty. Check event_data->snk_config is not NULL first to avoid this warning. Fixes: f5200aa9831f38 ("coresight: perf: Refactor function free_event_data()") Reviewed-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-9-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: stm: Allow to build coresight-stm as a moduleTingwei Zhang2-2/+23
- Kconfig becomes a tristate, to allow =m - add a stm_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> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-8-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-28coresight: Add try_get_module() in coresight_grab_device()Tingwei Zhang1-7/+53
When coresight device is in an active session, driver module of that device should not be removed. Use try_get_module() in coresight_grab_device() to prevent module to be unloaded. Use get_device()/put_device() to protect device data in the middle of active session. Suggested-by: Suzuki K Poulose <suzuki.poulose@arm.com> Tested-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-7-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>