diff options
| author | Abhishek Bapat <abhishekbapat@google.com> | 2026-07-08 18:01:26 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-08-20 18:24:35 -0700 |
| commit | 8cab95459c6df03fe1dcd617174aaaa3215fc0fe (patch) | |
| tree | 4de15d94f1aab6f03f81258ccff7e5990dc681f2 /mm | |
| parent | c38218afe95d246cdb30f882c149225beec1dc8a (diff) | |
| download | linux-next-8cab95459c6df03fe1dcd617174aaaa3215fc0fe.tar.gz linux-next-8cab95459c6df03fe1dcd617174aaaa3215fc0fe.zip | |
alloc_tag: add accuracy based filtering to ioctl
Extend the allocinfo filtering mechanism to allow users to filter tags
based on their accuracy.
[abhishekbapat@google.com: move `inaccurate` filtering criteria from `struct allocinfo_tag` to `struct allocinfo_filter`]
Link: https://lore.kernel.org/e4e49ec4a5960292aeeb9e196526c18dc95228a2.1785867739.git.abhishekbapat@google.com
Link: https://lore.kernel.org/396a5e4bc3b2990223ab355f2cd3ceb6aa15499e.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 'mm')
| -rw-r--r-- | mm/alloc_tag.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/alloc_tag.c b/mm/alloc_tag.c index 04b640d74bcc..b33410310477 100644 --- a/mm/alloc_tag.c +++ b/mm/alloc_tag.c @@ -262,6 +262,8 @@ static bool matches_filter(struct codetag *ct, struct allocinfo_filter *filter, struct alloc_tag_counters *counters, bool *fetched_counters) { + bool inaccurate; + if (!filter || !filter->mask) return true; @@ -287,6 +289,12 @@ static bool matches_filter(struct codetag *ct, struct allocinfo_filter *filter, ct->lineno != filter->fields.lineno) return false; + if (filter->mask & ALLOCINFO_FILTER_MASK_INACCURATE) { + inaccurate = !!(ct->flags & CODETAG_FLAG_INACCURATE); + if (inaccurate != !!(filter->inaccurate)) + return false; + } + if (filter->mask & (ALLOCINFO_FILTER_MASK_MIN_SIZE | ALLOCINFO_FILTER_MASK_MAX_SIZE)) { if (!*fetched_counters) { *counters = allocinfo_prefetch_counters(ct); |