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Linux: Add cachestat, fchmodat2 syscalls (#958)

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Stephen Gregoratto 2023-11-20 14:01:20 +11:00 • committed by GitHub
parent 69faf1b403
commit cc5c5319bf
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8 changed files with 287 additions and 1 deletions
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34
libc/calls/cachestat.h Normal file
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#ifndef COSMOPOLITAN_LIBC_CALLS_CACHESTAT_H_
#define COSMOPOLITAN_LIBC_CALLS_CACHESTAT_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct cachestat_range {
uint64_t off;
uint64_t len;
};
struct cachestat {
/** Number of cached pages. */
uint64_t nr_cache;
/** Number of dirty pages */
uint64_t nr_dirty;
/** Number of pages marked for writeback. */
uint64_t nr_writeback;
/** Number of pages evicted from the cache. */
uint64_t nr_evicted;
/**
* Number of recently evicted pages.
* A page is recently evicted if its last eviction was recent enough that its
* reentry to the cache would indicate that it is actively being used by the
* system, and that there is memory pressure on the system.
*/
uint64_t nr_recently_evicted;
};
int cachestat(int, struct cachestat_range *, struct cachestat *, uint32_t);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_CALLS_LANDLOCK_H_ */