kernel/drivers/hwtracing/intel_th/msu.c, branch linux-6.9.y

mm: replace vma->vm_flags direct modifications with modifier calls

2023-02-10T00:51:39Z

Replace direct modifications to vma->vm_flags with calls to modifier functions to be able to track flag changes and to keep vma locking correctness. [akpm@linux-foundation.org: fix drivers/misc/open-dice.c, per Hyeonggon Yoo] Link: https://lkml.kernel.org/r/20230126193752.297968-5-surenb@google.com Signed-off-by: Suren Baghdasaryan Acked-by: Michal Hocko Acked-by: Mel Gorman Acked-by: Mike Rapoport (IBM) Acked-by: Sebastian Reichel Reviewed-by: Liam R. Howlett Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Andy Lutomirski Cc: Arjun Roy Cc: Axel Rasmussen Cc: David Hildenbrand Cc: David Howells Cc: Davidlohr Bueso Cc: David Rientjes Cc: Eric Dumazet Cc: Greg Thelen Cc: Hugh Dickins Cc: Ingo Molnar Cc: Jann Horn Cc: Joel Fernandes Cc: Johannes Weiner Cc: Kent Overstreet Cc: Laurent Dufour Cc: Lorenzo Stoakes Cc: Matthew Wilcox Cc: Minchan Kim Cc: Paul E. McKenney Cc: Peter Oskolkov Cc: Peter Xu Cc: Peter Zijlstra Cc: Punit Agrawal Cc: Sebastian Andrzej Siewior Cc: Shakeel Butt Cc: Soheil Hassas Yeganeh Cc: Song Liu Cc: Vlastimil Babka Cc: Will Deacon Signed-off-by: Andrew Morton

intel_th: msu: Fix vmalloced buffers

2022-07-08T13:42:56Z

After commit f5ff79fddf0e ("dma-mapping: remove CONFIG_DMA_REMAP") there's a chance of DMA buffer getting allocated via vmalloc(), which messes up the mmapping code: > RIP: msc_mmap_fault [intel_th_msu] > Call Trace: > > __do_fault > do_fault ... Fix this by accounting for vmalloc possibility. Fixes: ba39bd830605 ("intel_th: msu: Switch over to scatterlist") Reviewed-by: Andy Shevchenko Signed-off-by: Alexander Shishkin Link: https://lore.kernel.org/r/20220705082637.59979-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman

intel_th: msu: Use memset_startat() for clearing hw header

2022-02-14T00:48:04Z

In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memset(), avoid intentionally writing across neighboring fields. Use memset_startat() so memset() doesn't get confused about writing beyond the destination member that is intended to be the starting point of zeroing through the end of the struct. Acked-by: Alexander Shishkin Link: https://lore.kernel.org/lkml/87sfyzi97l.fsf@ashishki-desk.ger.corp.intel.com Signed-off-by: Kees Cook

intel_th: msu: Make contiguous buffers uncached

2021-06-24T13:49:32Z

We already keep the multiblock mode buffers uncached, but forget the single mode. Address this. Reviewed-by: Andy Shevchenko Signed-off-by: Alexander Shishkin Link: https://lore.kernel.org/r/20210621151246.31891-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman

intel_th: Constify attribute_group structs

2021-04-16T05:26:50Z

The only usage of them is to pass their address to sysfs_create_group() and sysfs_remove_group(), both which have pointers to const attribute_group structs as input. Make them const to allow the compiler to put them in read-only memory. Signed-off-by: Rikard Falkeborn Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210414171251.14672-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman

hwtracing: intel: use krealloc_array()

2020-12-15T20:13:37Z

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 Cc: Alexander Shishkin Cc: Andy Shevchenko Cc: Borislav Petkov Cc: Borislav Petkov Cc: Christian Knig Cc: Christoph Lameter Cc: Daniel Vetter Cc: Daniel Vetter Cc: David Airlie Cc: David Rientjes Cc: Gustavo Padovan Cc: James Morse Cc: Jaroslav Kysela Cc: Jason Wang Cc: Joonsoo Kim Cc: Linus Walleij Cc: Maarten Lankhorst Cc: Mauro Carvalho Chehab Cc: Maxime Ripard Cc: "Michael S . Tsirkin" Cc: Pekka Enberg Cc: Robert Richter Cc: Sumit Semwal Cc: Takashi Iwai Cc: Takashi Iwai Cc: Thomas Zimmermann Cc: Tony Luck Cc: Vlastimil Babka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

intel_th: msu: Make stopping the trace optional

2020-03-24T12:45:24Z

Some use cases prefer to keep collecting the trace data into the last available window while the other windows are being offloaded instead of stopping the trace. In this scenario, the window switch happens automatically when the next window becomes available again. Add an option to allow this and a sysfs attribute to enable it. Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200319085152.52183-1-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman

Merge 5.6-rc7 into char-misc-next

2020-03-23T06:59:38Z

We need the char/misc driver fixes in here as well. Signed-off-by: Greg Kroah-Hartman

intel_th: Fix user-visible error codes

2020-03-18T10:32:56Z

There are a few places in the driver that end up returning ENOTSUPP to the user, replace those with EINVAL. Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Fixes: ba82664c134ef ("intel_th: Add Memory Storage Unit driver") Cc: stable@vger.kernel.org # v4.4+ Link: https://lore.kernel.org/r/20200317062215.15598-6-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman

intel_th: msu: Fix the unexpected state warning

2020-03-18T10:32:56Z

The unexpected state warning should only warn on illegal state transitions. Fix that. Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Fixes: 615c164da0eb4 ("intel_th: msu: Introduce buffer interface") Cc: stable@vger.kernel.org # v5.4+ Link: https://lore.kernel.org/r/20200317062215.15598-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman