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| author | Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | 2024-02-15 09:46:26 -0500 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-02-22 15:27:19 -0800 |
| commit | 6d439c18d9b190ab1e0f1196bc45590f95752bf1 (patch) | |
| tree | fe603c9a3c24c837e42feb8a932bd114c8ab8c16 /tools/perf/scripts/python/bin/flamegraph-record | |
| parent | 2807c54b3809ca5e51e5a9dfa5e9ddb8993a0e6f (diff) | |
| download | linux-6d439c18d9b190ab1e0f1196bc45590f95752bf1.tar.gz linux-6d439c18d9b190ab1e0f1196bc45590f95752bf1.zip | |
dax: alloc_dax() return ERR_PTR(-EOPNOTSUPP) for CONFIG_DAX=n
Change the return value from NULL to PTR_ERR(-EOPNOTSUPP) for
CONFIG_DAX=n to be consistent with the fact that CONFIG_DAX=y
never returns NULL.
This is done in preparation for using cpu_dcache_is_aliasing() in a
following change which will properly support architectures which detect
data cache aliasing at runtime.
Link: https://lkml.kernel.org/r/20240215144633.96437-3-mathieu.desnoyers@efficios.com
Fixes: 4e4ced93794a ("dax: Move mandatory ->zero_page_range() check in alloc_dax()")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: kernel test robot <lkp@intel.com>
Cc: Michael Sclafani <dm-devel@lists.linux.dev>
Cc: Mike Snitzer <snitzer@kernel.org>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/bin/flamegraph-record')
0 files changed, 0 insertions, 0 deletions