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| author | Abhishek Bapat <abhishekbapat@google.com> | 2026-07-08 18:01:25 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-07-22 21:12:37 -0700 |
| commit | d14e6332126f2463c895beccbe07a6f6734cce0f (patch) | |
| tree | 67210b8d7485f3280da2e3bbc58c9d0a0d957f9f /include/uapi | |
| parent | 83ba6b8229e969e0059541b7fc140cdb79b1e19c (diff) | |
| download | linux-next-d14e6332126f2463c895beccbe07a6f6734cce0f.tar.gz linux-next-d14e6332126f2463c895beccbe07a6f6734cce0f.zip | |
alloc_tag: add size-based filtering to ioctl
Extend the allocinfo filtering mechanism to allow users to filter tags
based on the total number of bytes allocated [min_size, max_size]. The
size range is inclusive.
Filtering by size involves retrieving allocinfo per-CPU counters, which is
an expensive operation. Hence, the performance of size-based filtering
will be worse than other filters.
Link: https://lore.kernel.org/0a7653b70ae0d64e967fbea0e933bc35f8ac656e.1783532853.git.abhishekbapat@google.com
Signed-off-by: Abhishek Bapat <abhishekbapat@google.com>
Acked-by: Hao Ge <hao.ge@linux.dev>
Acked-by: Suren Baghdasaryan <surenb@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Sourav Panda <souravpanda@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/alloc_tag.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/uapi/linux/alloc_tag.h b/include/uapi/linux/alloc_tag.h index 13e9b5916bf5..0de5fc180790 100644 --- a/include/uapi/linux/alloc_tag.h +++ b/include/uapi/linux/alloc_tag.h @@ -50,13 +50,17 @@ enum { ALLOCINFO_FILTER_FUNCTION, ALLOCINFO_FILTER_FILENAME, ALLOCINFO_FILTER_LINENO, - __ALLOCINFO_FILTER_LAST = ALLOCINFO_FILTER_LINENO + ALLOCINFO_FILTER_MIN_SIZE, + ALLOCINFO_FILTER_MAX_SIZE, + __ALLOCINFO_FILTER_LAST = ALLOCINFO_FILTER_MAX_SIZE }; #define ALLOCINFO_FILTER_MASK_MODNAME (1 << ALLOCINFO_FILTER_MODNAME) #define ALLOCINFO_FILTER_MASK_FUNCTION (1 << ALLOCINFO_FILTER_FUNCTION) #define ALLOCINFO_FILTER_MASK_FILENAME (1 << ALLOCINFO_FILTER_FILENAME) #define ALLOCINFO_FILTER_MASK_LINENO (1 << ALLOCINFO_FILTER_LINENO) +#define ALLOCINFO_FILTER_MASK_MIN_SIZE (1 << ALLOCINFO_FILTER_MIN_SIZE) +#define ALLOCINFO_FILTER_MASK_MAX_SIZE (1 << ALLOCINFO_FILTER_MAX_SIZE) #define ALLOCINFO_FILTER_MASKS \ ((1 << (__ALLOCINFO_FILTER_LAST + 1)) - 1) @@ -64,6 +68,8 @@ enum { struct allocinfo_filter { __u64 mask; /* bitmask of the filter fields used */ struct allocinfo_tag fields; + __u64 min_size; + __u64 max_size; }; struct allocinfo_get_at { |