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Refactor init_system_thp_mode and print it in malloc stats.

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guangli-dai 2025-10-07 16:18:07 -07:00 • committed by Guangli Dai
parent 87555dfbb2
commit 2cfa41913e
6 changed files with 63 additions and 22 deletions
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18
include/jemalloc/internal/pages.h
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@ -97,8 +97,12 @@ static const bool pages_can_hugify =
#endif
;
/*
* thp_mode_t are values for opt.thp, while system_thp_mode_t is for kernel thp
* settings, i.e., init_system_thp_mode.
*/
typedef enum {
thp_mode_default = 0, /* Do not change hugepage settings. */
thp_mode_do_nothing = 0, /* Respect kernel thp settings. */
thp_mode_always = 1, /* Always set MADV_HUGEPAGE. */
thp_mode_never = 2, /* Always set MADV_NOHUGEPAGE. */
@ -106,10 +110,18 @@ typedef enum {
thp_mode_not_supported = 3 /* No THP support detected. */
} thp_mode_t;
#define THP_MODE_DEFAULT thp_mode_default
typedef enum {
system_thp_mode_madvise = 0, /* Kernel THP mode: madvise */
system_thp_mode_always = 1, /* Kernel THP mode: always */
system_thp_mode_never = 2, /* Kernel THP mode: never */
system_thp_mode_not_supported = 3 /* No THP support detected. */
} system_thp_mode_t;
#define THP_MODE_DEFAULT thp_mode_do_nothing
extern thp_mode_t opt_thp;
extern thp_mode_t init_system_thp_mode; /* Initial system wide state. */
extern system_thp_mode_t init_system_thp_mode; /* Initial system wide state. */
extern const char *const thp_mode_names[];
extern const char *const system_thp_mode_names[];
void *pages_map(void *addr, size_t size, size_t alignment, bool *commit);
void pages_unmap(void *addr, size_t size);