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-rw-r--r--arch/s390/include/asm/cpu.h7
-rw-r--r--arch/s390/include/asm/cputime.h42
-rw-r--r--arch/s390/include/asm/lowcore.h49
-rw-r--r--arch/s390/include/asm/system.h4
-rw-r--r--arch/s390/include/asm/thread_info.h2
-rw-r--r--arch/s390/include/asm/timer.h16
-rw-r--r--arch/s390/include/asm/topology.h2
-rw-r--r--arch/s390/include/asm/vdso.h15
8 files changed, 78 insertions, 59 deletions
diff --git a/arch/s390/include/asm/cpu.h b/arch/s390/include/asm/cpu.h
index e5a6a9ba3adf..d60a2eefb17b 100644
--- a/arch/s390/include/asm/cpu.h
+++ b/arch/s390/include/asm/cpu.h
@@ -14,7 +14,6 @@
struct s390_idle_data {
spinlock_t lock;
- unsigned int in_idle;
unsigned long long idle_count;
unsigned long long idle_enter;
unsigned long long idle_time;
@@ -22,12 +21,12 @@ struct s390_idle_data {
DECLARE_PER_CPU(struct s390_idle_data, s390_idle);
-void s390_idle_leave(void);
+void vtime_start_cpu(void);
static inline void s390_idle_check(void)
{
- if ((&__get_cpu_var(s390_idle))->in_idle)
- s390_idle_leave();
+ if ((&__get_cpu_var(s390_idle))->idle_enter != 0ULL)
+ vtime_start_cpu();
}
#endif /* _ASM_S390_CPU_H_ */
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index 133ce054fc89..521726430afa 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -11,7 +11,7 @@
#include <asm/div64.h>
-/* We want to use micro-second resolution. */
+/* We want to use full resolution of the CPU timer: 2**-12 micro-seconds. */
typedef unsigned long long cputime_t;
typedef unsigned long long cputime64_t;
@@ -53,9 +53,9 @@ __div(unsigned long long n, unsigned int base)
#define cputime_ge(__a, __b) ((__a) >= (__b))
#define cputime_lt(__a, __b) ((__a) < (__b))
#define cputime_le(__a, __b) ((__a) <= (__b))
-#define cputime_to_jiffies(__ct) (__div((__ct), 1000000 / HZ))
+#define cputime_to_jiffies(__ct) (__div((__ct), 4096000000ULL / HZ))
#define cputime_to_scaled(__ct) (__ct)
-#define jiffies_to_cputime(__hz) ((cputime_t)(__hz) * (1000000 / HZ))
+#define jiffies_to_cputime(__hz) ((cputime_t)(__hz) * (4096000000ULL / HZ))
#define cputime64_zero (0ULL)
#define cputime64_add(__a, __b) ((__a) + (__b))
@@ -64,7 +64,7 @@ __div(unsigned long long n, unsigned int base)
static inline u64
cputime64_to_jiffies64(cputime64_t cputime)
{
- do_div(cputime, 1000000 / HZ);
+ do_div(cputime, 4096000000ULL / HZ);
return cputime;
}
@@ -74,13 +74,13 @@ cputime64_to_jiffies64(cputime64_t cputime)
static inline unsigned int
cputime_to_msecs(const cputime_t cputime)
{
- return __div(cputime, 1000);
+ return __div(cputime, 4096000);
}
static inline cputime_t
msecs_to_cputime(const unsigned int m)
{
- return (cputime_t) m * 1000;
+ return (cputime_t) m * 4096000;
}
/*
@@ -89,13 +89,13 @@ msecs_to_cputime(const unsigned int m)
static inline unsigned int
cputime_to_secs(const cputime_t cputime)
{
- return __div(cputime, 1000000);
+ return __div(cputime, 2048000000) >> 1;
}
static inline cputime_t
secs_to_cputime(const unsigned int s)
{
- return (cputime_t) s * 1000000;
+ return (cputime_t) s * 4096000000ULL;
}
/*
@@ -104,7 +104,7 @@ secs_to_cputime(const unsigned int s)
static inline cputime_t
timespec_to_cputime(const struct timespec *value)
{
- return value->tv_nsec / 1000 + (u64) value->tv_sec * 1000000;
+ return value->tv_nsec * 4096 / 1000 + (u64) value->tv_sec * 4096000000ULL;
}
static inline void
@@ -114,12 +114,12 @@ cputime_to_timespec(const cputime_t cputime, struct timespec *value)
register_pair rp;
rp.pair = cputime >> 1;
- asm ("dr %0,%1" : "+d" (rp) : "d" (1000000 >> 1));
- value->tv_nsec = rp.subreg.even * 1000;
+ asm ("dr %0,%1" : "+d" (rp) : "d" (2048000000UL));
+ value->tv_nsec = rp.subreg.even * 1000 / 4096;
value->tv_sec = rp.subreg.odd;
#else
- value->tv_nsec = (cputime % 1000000) * 1000;
- value->tv_sec = cputime / 1000000;
+ value->tv_nsec = (cputime % 4096000000ULL) * 1000 / 4096;
+ value->tv_sec = cputime / 4096000000ULL;
#endif
}
@@ -131,7 +131,7 @@ cputime_to_timespec(const cputime_t cputime, struct timespec *value)
static inline cputime_t
timeval_to_cputime(const struct timeval *value)
{
- return value->tv_usec + (u64) value->tv_sec * 1000000;
+ return value->tv_usec * 4096 + (u64) value->tv_sec * 4096000000ULL;
}
static inline void
@@ -141,12 +141,12 @@ cputime_to_timeval(const cputime_t cputime, struct timeval *value)
register_pair rp;
rp.pair = cputime >> 1;
- asm ("dr %0,%1" : "+d" (rp) : "d" (1000000 >> 1));
- value->tv_usec = rp.subreg.even;
+ asm ("dr %0,%1" : "+d" (rp) : "d" (2048000000UL));
+ value->tv_usec = rp.subreg.even / 4096;
value->tv_sec = rp.subreg.odd;
#else
- value->tv_usec = cputime % 1000000;
- value->tv_sec = cputime / 1000000;
+ value->tv_usec = cputime % 4096000000ULL;
+ value->tv_sec = cputime / 4096000000ULL;
#endif
}
@@ -156,13 +156,13 @@ cputime_to_timeval(const cputime_t cputime, struct timeval *value)
static inline clock_t
cputime_to_clock_t(cputime_t cputime)
{
- return __div(cputime, 1000000 / USER_HZ);
+ return __div(cputime, 4096000000ULL / USER_HZ);
}
static inline cputime_t
clock_t_to_cputime(unsigned long x)
{
- return (cputime_t) x * (1000000 / USER_HZ);
+ return (cputime_t) x * (4096000000ULL / USER_HZ);
}
/*
@@ -171,7 +171,7 @@ clock_t_to_cputime(unsigned long x)
static inline clock_t
cputime64_to_clock_t(cputime64_t cputime)
{
- return __div(cputime, 1000000 / USER_HZ);
+ return __div(cputime, 4096000000ULL / USER_HZ);
}
#endif /* _S390_CPUTIME_H */
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 0bc51d52a899..ffdef5fe8587 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -67,11 +67,11 @@
#define __LC_SYNC_ENTER_TIMER 0x248
#define __LC_ASYNC_ENTER_TIMER 0x250
#define __LC_EXIT_TIMER 0x258
-#define __LC_LAST_UPDATE_TIMER 0x260
-#define __LC_USER_TIMER 0x268
-#define __LC_SYSTEM_TIMER 0x270
-#define __LC_LAST_UPDATE_CLOCK 0x278
-#define __LC_STEAL_CLOCK 0x280
+#define __LC_USER_TIMER 0x260
+#define __LC_SYSTEM_TIMER 0x268
+#define __LC_STEAL_TIMER 0x270
+#define __LC_LAST_UPDATE_TIMER 0x278
+#define __LC_LAST_UPDATE_CLOCK 0x280
#define __LC_RETURN_MCCK_PSW 0x288
#define __LC_KERNEL_STACK 0xC40
#define __LC_THREAD_INFO 0xC44
@@ -89,11 +89,11 @@
#define __LC_SYNC_ENTER_TIMER 0x250
#define __LC_ASYNC_ENTER_TIMER 0x258
#define __LC_EXIT_TIMER 0x260
-#define __LC_LAST_UPDATE_TIMER 0x268
-#define __LC_USER_TIMER 0x270
-#define __LC_SYSTEM_TIMER 0x278
-#define __LC_LAST_UPDATE_CLOCK 0x280
-#define __LC_STEAL_CLOCK 0x288
+#define __LC_USER_TIMER 0x268
+#define __LC_SYSTEM_TIMER 0x270
+#define __LC_STEAL_TIMER 0x278
+#define __LC_LAST_UPDATE_TIMER 0x280
+#define __LC_LAST_UPDATE_CLOCK 0x288
#define __LC_RETURN_MCCK_PSW 0x290
#define __LC_KERNEL_STACK 0xD40
#define __LC_THREAD_INFO 0xD48
@@ -106,8 +106,10 @@
#define __LC_IPLDEV 0xDB8
#define __LC_CURRENT 0xDD8
#define __LC_INT_CLOCK 0xDE8
+#define __LC_VDSO_PER_CPU 0xE38
#endif /* __s390x__ */
+#define __LC_PASTE 0xE40
#define __LC_PANIC_MAGIC 0xE00
#ifndef __s390x__
@@ -252,11 +254,11 @@ struct _lowcore
__u64 sync_enter_timer; /* 0x248 */
__u64 async_enter_timer; /* 0x250 */
__u64 exit_timer; /* 0x258 */
- __u64 last_update_timer; /* 0x260 */
- __u64 user_timer; /* 0x268 */
- __u64 system_timer; /* 0x270 */
- __u64 last_update_clock; /* 0x278 */
- __u64 steal_clock; /* 0x280 */
+ __u64 user_timer; /* 0x260 */
+ __u64 system_timer; /* 0x268 */
+ __u64 steal_timer; /* 0x270 */
+ __u64 last_update_timer; /* 0x278 */
+ __u64 last_update_clock; /* 0x280 */
psw_t return_mcck_psw; /* 0x288 */
__u8 pad8[0xc00-0x290]; /* 0x290 */
@@ -343,11 +345,11 @@ struct _lowcore
__u64 sync_enter_timer; /* 0x250 */
__u64 async_enter_timer; /* 0x258 */
__u64 exit_timer; /* 0x260 */
- __u64 last_update_timer; /* 0x268 */
- __u64 user_timer; /* 0x270 */
- __u64 system_timer; /* 0x278 */
- __u64 last_update_clock; /* 0x280 */
- __u64 steal_clock; /* 0x288 */
+ __u64 user_timer; /* 0x268 */
+ __u64 system_timer; /* 0x270 */
+ __u64 steal_timer; /* 0x278 */
+ __u64 last_update_timer; /* 0x280 */
+ __u64 last_update_clock; /* 0x288 */
psw_t return_mcck_psw; /* 0x290 */
__u8 pad8[0xc00-0x2a0]; /* 0x2a0 */
/* System info area */
@@ -381,7 +383,12 @@ struct _lowcore
/* whether the kernel died with panic() or not */
__u32 panic_magic; /* 0xe00 */
- __u8 pad13[0x11b8-0xe04]; /* 0xe04 */
+ /* Per cpu primary space access list */
+ __u8 pad_0xe04[0xe3c-0xe04]; /* 0xe04 */
+ __u32 vdso_per_cpu_data; /* 0xe3c */
+ __u32 paste[16]; /* 0xe40 */
+
+ __u8 pad13[0x11b8-0xe80]; /* 0xe80 */
/* 64 bit extparam used for pfault, diag 250 etc */
__u64 ext_params2; /* 0x11B8 */
diff --git a/arch/s390/include/asm/system.h b/arch/s390/include/asm/system.h
index 024ef42ed6d7..3a8b26eb1f2e 100644
--- a/arch/s390/include/asm/system.h
+++ b/arch/s390/include/asm/system.h
@@ -99,7 +99,7 @@ static inline void restore_access_regs(unsigned int *acrs)
prev = __switch_to(prev,next); \
} while (0)
-extern void account_vtime(struct task_struct *);
+extern void account_vtime(struct task_struct *, struct task_struct *);
extern void account_tick_vtime(struct task_struct *);
extern void account_system_vtime(struct task_struct *);
@@ -121,7 +121,7 @@ static inline void cmma_init(void) { }
#define finish_arch_switch(prev) do { \
set_fs(current->thread.mm_segment); \
- account_vtime(prev); \
+ account_vtime(prev, current); \
} while (0)
#define nop() asm volatile("nop")
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index c1eaf9604da7..c544aa524535 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -47,6 +47,8 @@ struct thread_info {
unsigned int cpu; /* current CPU */
int preempt_count; /* 0 => preemptable, <0 => BUG */
struct restart_block restart_block;
+ __u64 user_timer;
+ __u64 system_timer;
};
/*
diff --git a/arch/s390/include/asm/timer.h b/arch/s390/include/asm/timer.h
index 61705d60f995..e4bcab739c19 100644
--- a/arch/s390/include/asm/timer.h
+++ b/arch/s390/include/asm/timer.h
@@ -23,20 +23,18 @@ struct vtimer_list {
__u64 expires;
__u64 interval;
- spinlock_t lock;
- unsigned long magic;
-
void (*function)(unsigned long);
unsigned long data;
};
-/* the offset value will wrap after ca. 71 years */
+/* the vtimer value will wrap after ca. 71 years */
struct vtimer_queue {
struct list_head list;
spinlock_t lock;
- __u64 to_expire; /* current event expire time */
- __u64 offset; /* list offset to zero */
- __u64 idle; /* temp var for idle */
+ __u64 timer; /* last programmed timer */
+ __u64 elapsed; /* elapsed time of timer expire values */
+ __u64 idle; /* temp var for idle */
+ int do_spt; /* =1: reprogram cpu timer in idle */
};
extern void init_virt_timer(struct vtimer_list *timer);
@@ -48,8 +46,8 @@ extern int del_virt_timer(struct vtimer_list *timer);
extern void init_cpu_vtimer(void);
extern void vtime_init(void);
-extern void vtime_start_cpu_timer(void);
-extern void vtime_stop_cpu_timer(void);
+extern void vtime_stop_cpu(void);
+extern void vtime_start_leave(void);
#endif /* __KERNEL__ */
diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h
index d96c91643458..c93eb50e1d09 100644
--- a/arch/s390/include/asm/topology.h
+++ b/arch/s390/include/asm/topology.h
@@ -6,10 +6,12 @@
#define mc_capable() (1)
cpumask_t cpu_coregroup_map(unsigned int cpu);
+const struct cpumask *cpu_coregroup_mask(unsigned int cpu);
extern cpumask_t cpu_core_map[NR_CPUS];
#define topology_core_siblings(cpu) (cpu_core_map[cpu])
+#define topology_core_cpumask(cpu) (&cpu_core_map[cpu])
int topology_set_cpu_management(int fc);
void topology_schedule_update(void);
diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h
index a44f4fe16a35..7bdd7c8ebc91 100644
--- a/arch/s390/include/asm/vdso.h
+++ b/arch/s390/include/asm/vdso.h
@@ -12,9 +12,9 @@
#ifndef __ASSEMBLY__
/*
- * Note about this structure:
+ * Note about the vdso_data and vdso_per_cpu_data structures:
*
- * NEVER USE THIS IN USERSPACE CODE DIRECTLY. The layout of this
+ * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the
* structure is supposed to be known only to the function in the vdso
* itself and may change without notice.
*/
@@ -28,10 +28,21 @@ struct vdso_data {
__u64 wtom_clock_nsec; /* 0x28 */
__u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */
__u32 tz_dsttime; /* Type of dst correction 0x34 */
+ __u32 ectg_available;
+};
+
+struct vdso_per_cpu_data {
+ __u64 ectg_timer_base;
+ __u64 ectg_user_time;
};
extern struct vdso_data *vdso_data;
+#ifdef CONFIG_64BIT
+int vdso_alloc_per_cpu(int cpu, struct _lowcore *lowcore);
+void vdso_free_per_cpu(int cpu, struct _lowcore *lowcore);
+#endif
+
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.