diff options
Diffstat (limited to 'include/uapi/linux/resource.h')
| -rw-r--r-- | include/uapi/linux/resource.h | 52 |
1 files changed, 30 insertions, 22 deletions
diff --git a/include/uapi/linux/resource.h b/include/uapi/linux/resource.h index e0ed28477f48..4fc22908bc09 100644 --- a/include/uapi/linux/resource.h +++ b/include/uapi/linux/resource.h @@ -1,7 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _UAPI_LINUX_RESOURCE_H #define _UAPI_LINUX_RESOURCE_H -#include <linux/time.h> +#include <linux/time_types.h> #include <linux/types.h> /* @@ -21,27 +22,27 @@ #define RUSAGE_THREAD 1 /* only the calling thread */ struct rusage { - struct timeval ru_utime; /* user time used */ - struct timeval ru_stime; /* system time used */ - long ru_maxrss; /* maximum resident set size */ - long ru_ixrss; /* integral shared memory size */ - long ru_idrss; /* integral unshared data size */ - long ru_isrss; /* integral unshared stack size */ - long ru_minflt; /* page reclaims */ - long ru_majflt; /* page faults */ - long ru_nswap; /* swaps */ - long ru_inblock; /* block input operations */ - long ru_oublock; /* block output operations */ - long ru_msgsnd; /* messages sent */ - long ru_msgrcv; /* messages received */ - long ru_nsignals; /* signals received */ - long ru_nvcsw; /* voluntary context switches */ - long ru_nivcsw; /* involuntary " */ + struct __kernel_old_timeval ru_utime; /* user time used */ + struct __kernel_old_timeval ru_stime; /* system time used */ + __kernel_long_t ru_maxrss; /* maximum resident set size */ + __kernel_long_t ru_ixrss; /* integral shared memory size */ + __kernel_long_t ru_idrss; /* integral unshared data size */ + __kernel_long_t ru_isrss; /* integral unshared stack size */ + __kernel_long_t ru_minflt; /* page reclaims */ + __kernel_long_t ru_majflt; /* page faults */ + __kernel_long_t ru_nswap; /* swaps */ + __kernel_long_t ru_inblock; /* block input operations */ + __kernel_long_t ru_oublock; /* block output operations */ + __kernel_long_t ru_msgsnd; /* messages sent */ + __kernel_long_t ru_msgrcv; /* messages received */ + __kernel_long_t ru_nsignals; /* signals received */ + __kernel_long_t ru_nvcsw; /* voluntary context switches */ + __kernel_long_t ru_nivcsw; /* involuntary " */ }; struct rlimit { - unsigned long rlim_cur; - unsigned long rlim_max; + __kernel_ulong_t rlim_cur; + __kernel_ulong_t rlim_max; }; #define RLIM64_INFINITY (~0ULL) @@ -65,10 +66,17 @@ struct rlimit64 { #define _STK_LIM (8*1024*1024) /* - * GPG2 wants 64kB of mlocked memory, to make sure pass phrases - * and other sensitive information are never written to disk. + * Limit the amount of locked memory by some sane default: + * root can always increase this limit if needed. + * + * The main use-cases are (1) preventing sensitive memory + * from being swapped; (2) real-time operations; (3) via + * IOURING_REGISTER_BUFFERS. + * + * The first two don't need much. The latter will take as + * much as it can get. 8MB is a reasonably sane default. */ -#define MLOCK_LIMIT ((PAGE_SIZE > 64*1024) ? PAGE_SIZE : 64*1024) +#define MLOCK_LIMIT (8*1024*1024) /* * Due to binary compatibility, the actual resource numbers |