kernel/linux.git/drivers/hwtracing, branch v4.19.77

intel_th: pci: Add Tiger Lake support

2019-09-06T08:22:18+00:00

commit 9c78255fdde45c6b9a1ee30f652f7b34c727f5c7 upstream. This adds support for the Trace Hub in Tiger Lake PCH. Signed-off-by: Alexander Shishkin Cc: stable@vger.kernel.org # v4.14+ Link: https://lore.kernel.org/r/20190821074955.3925-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman

intel_th: pci: Add support for another Lewisburg PCH

2019-09-06T08:22:18+00:00

commit 164eb56e3b64f3a816238d410c9efec7567a82ef upstream. Add support for the Trace Hub in another Lewisburg PCH. Signed-off-by: Alexander Shishkin Cc: stable@vger.kernel.org # v4.14+ Link: https://lore.kernel.org/r/20190821074955.3925-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman

stm class: Fix a double free of stm_source_device

2019-09-06T08:22:18+00:00

commit 961b6ffe0e2c403b09a8efe4a2e986b3c415391a upstream. In the error path of stm_source_register_device(), the kfree is unnecessary, as the put_device() before it ends up calling stm_source_device_release() to free stm_source_device, leading to a double free at the outer kfree() call. Remove it. Signed-off-by: Ding Xiang Signed-off-by: Alexander Shishkin Fixes: 7bd1d4093c2fa ("stm class: Introduce an abstraction for System Trace Module devices") Link: https://lore.kernel.org/linux-arm-kernel/1563354988-23826-1-git-send-email-dingxiang@cmss.chinamobile.com/ Cc: stable@vger.kernel.org # v4.4+ Link: https://lore.kernel.org/r/20190821074955.3925-2-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman

intel_th: msu: Fix single mode with disabled IOMMU

2019-07-26T07:14:30+00:00

commit 918b8646497b5dba6ae82d4a7325f01b258972b9 upstream. Commit 4e0eaf239fb3 ("intel_th: msu: Fix single mode with IOMMU") switched the single mode code to use dma mapping pages obtained from the page allocator, but with IOMMU disabled, that may lead to using SWIOTLB bounce buffers and without additional sync'ing, produces empty trace buffers. Fix this by using a DMA32 GFP flag to the page allocation in single mode, as the device supports full 32-bit DMA addressing. Signed-off-by: Alexander Shishkin Fixes: 4e0eaf239fb3 ("intel_th: msu: Fix single mode with IOMMU") Reviewed-by: Andy Shevchenko Reported-by: Ammy Yi Cc: stable Link: https://lore.kernel.org/r/20190621161930.60785-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman

intel_th: pci: Add Ice Lake NNPI support

2019-07-26T07:14:26+00:00

commit 4aa5aed2b6f267592705a526f57518a5d715b769 upstream. This adds Ice Lake NNPI support to the Intel(R) Trace Hub. Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Cc: stable Link: https://lore.kernel.org/r/20190621161930.60785-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman

intel_th: msu: Fix single mode with IOMMU

2019-05-25T16:23:26+00:00

commit 4e0eaf239fb33ebc671303e2b736fa043462e2f4 upstream. Currently, the pages that are allocated for the single mode of MSC are not mapped into the device's dma space and the code is incorrectly using *_to_phys() in place of a dma address. This fails with IOMMU enabled and is otherwise bad practice. Fix the single mode buffer allocation to map the pages into the device's DMA space. Signed-off-by: Alexander Shishkin Fixes: ba82664c134e ("intel_th: Add Memory Storage Unit driver") Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Greg Kroah-Hartman

stm class: Fix channel bitmap on 32-bit systems

2019-05-25T16:23:24+00:00

commit 51e0f227812ed81a368de54157ebe14396b4be03 upstream. Commit 7bd1d4093c2f ("stm class: Introduce an abstraction for System Trace Module devices") naively calculates the channel bitmap size in 64-bit chunks regardless of the size of underlying unsigned long, making the bitmap half as big on a 32-bit system. This leads to an out of bounds access with the upper half of the bitmap. Fix this by using BITS_TO_LONGS. While at it, convert to using struct_size() for the total size calculation of the master struct. Signed-off-by: Alexander Shishkin Fixes: 7bd1d4093c2f ("stm class: Introduce an abstraction for System Trace Module devices") Reported-by: Mulu He Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Greg Kroah-Hartman

stm class: Fix channel free in stm output free path

2019-05-25T16:23:24+00:00

commit ee496da4c3915de3232b5f5cd20e21ae3e46fe8d upstream. Number of free masters is not set correctly in stm free path. Fix this by properly adding the number of output channels before setting them to 0 in stm_output_disclaim(). Currently it is equivalent to doing nothing since master->nr_free is incremented by 0. Fixes: 7bd1d4093c2f ("stm class: Introduce an abstraction for System Trace Module devices") Signed-off-by: Tingwei Zhang Signed-off-by: Sai Prakash Ranjan Cc: stable@vger.kernel.org # v4.4 Signed-off-by: Alexander Shishkin Signed-off-by: Greg Kroah-Hartman

intel_th: pci: Add Comet Lake support

2019-05-10T15:54:10+00:00

commit e60e9a4b231a20a199d7a61caadc48693c30d695 upstream. This adds support for Intel TH on Comet Lake. Signed-off-by: Alexander Shishkin Cc: stable Signed-off-by: Greg Kroah-Hartman

intel_th: gth: Fix an off-by-one in output unassigning

2019-05-02T07:58:56+00:00

commit 91d3f8a629849968dc91d6ce54f2d46abf4feb7f upstream. Commit 9ed3f22223c3 ("intel_th: Don't reference unassigned outputs") fixes a NULL dereference for all masters except the last one ("256+"), which keeps the stale pointer after the output driver had been unassigned. Fix the off-by-one. Signed-off-by: Alexander Shishkin Fixes: 9ed3f22223c3 ("intel_th: Don't reference unassigned outputs") Signed-off-by: Greg Kroah-Hartman