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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /drivers/md/bcache/stats.h | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers/md/bcache/stats.h')
| -rw-r--r-- | drivers/md/bcache/stats.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/md/bcache/stats.h b/drivers/md/bcache/stats.h new file mode 100644 index 000000000..21b445f8a --- /dev/null +++ b/drivers/md/bcache/stats.h @@ -0,0 +1,62 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _BCACHE_STATS_H_ +#define _BCACHE_STATS_H_ + +struct cache_stat_collector { + atomic_t cache_hits; + atomic_t cache_misses; + atomic_t cache_bypass_hits; + atomic_t cache_bypass_misses; + atomic_t cache_miss_collisions; + atomic_t sectors_bypassed; +}; + +struct cache_stats { + struct kobject kobj; + + unsigned long cache_hits; + unsigned long cache_misses; + unsigned long cache_bypass_hits; + unsigned long cache_bypass_misses; + unsigned long cache_miss_collisions; + unsigned long sectors_bypassed; + + unsigned int rescale; +}; + +struct cache_accounting { + struct closure cl; + struct timer_list timer; + atomic_t closing; + + struct cache_stat_collector collector; + + struct cache_stats total; + struct cache_stats five_minute; + struct cache_stats hour; + struct cache_stats day; +}; + +struct cache_set; +struct cached_dev; +struct bcache_device; + +void bch_cache_accounting_init(struct cache_accounting *acc, + struct closure *parent); + +int bch_cache_accounting_add_kobjs(struct cache_accounting *acc, + struct kobject *parent); + +void bch_cache_accounting_clear(struct cache_accounting *acc); + +void bch_cache_accounting_destroy(struct cache_accounting *acc); + +void bch_mark_cache_accounting(struct cache_set *c, struct bcache_device *d, + bool hit, bool bypass); +void bch_mark_cache_miss_collision(struct cache_set *c, + struct bcache_device *d); +void bch_mark_sectors_bypassed(struct cache_set *c, + struct cached_dev *dc, + int sectors); + +#endif /* _BCACHE_STATS_H_ */ |