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-rw-r--r--include/asm-powerpc/cputable.h4
-rw-r--r--include/asm-powerpc/cputime.h202
-rw-r--r--include/asm-powerpc/irq.h6
-rw-r--r--include/asm-powerpc/paca.h5
-rw-r--r--include/asm-powerpc/ppc_asm.h42
-rw-r--r--include/asm-powerpc/system.h4
-rw-r--r--include/asm-powerpc/time.h15
7 files changed, 275 insertions, 3 deletions
diff --git a/include/asm-powerpc/cputable.h b/include/asm-powerpc/cputable.h
index 90d005bb4d1..99d12ff6346 100644
--- a/include/asm-powerpc/cputable.h
+++ b/include/asm-powerpc/cputable.h
@@ -117,6 +117,7 @@ extern void do_cpu_ftr_fixups(unsigned long offset);
#define CPU_FTR_MMCRA_SIHV ASM_CONST(0x0000080000000000)
#define CPU_FTR_CI_LARGE_PAGE ASM_CONST(0x0000100000000000)
#define CPU_FTR_PAUSE_ZERO ASM_CONST(0x0000200000000000)
+#define CPU_FTR_PURR ASM_CONST(0x0000400000000000)
#else
/* ensure on 32b processors the flags are available for compiling but
* don't do anything */
@@ -132,6 +133,7 @@ extern void do_cpu_ftr_fixups(unsigned long offset);
#define CPU_FTR_LOCKLESS_TLBIE ASM_CONST(0x0)
#define CPU_FTR_MMCRA_SIHV ASM_CONST(0x0)
#define CPU_FTR_CI_LARGE_PAGE ASM_CONST(0x0)
+#define CPU_FTR_PURR ASM_CONST(0x0)
#endif
#ifndef __ASSEMBLY__
@@ -316,7 +318,7 @@ enum {
CPU_FTR_HPTE_TABLE | CPU_FTR_PPCAS_ARCH_V2 |
CPU_FTR_MMCRA | CPU_FTR_SMT |
CPU_FTR_COHERENT_ICACHE | CPU_FTR_LOCKLESS_TLBIE |
- CPU_FTR_MMCRA_SIHV,
+ CPU_FTR_MMCRA_SIHV | CPU_FTR_PURR,
CPU_FTRS_CELL = CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB |
CPU_FTR_HPTE_TABLE | CPU_FTR_PPCAS_ARCH_V2 |
CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT |
diff --git a/include/asm-powerpc/cputime.h b/include/asm-powerpc/cputime.h
index 6d68ad7e0ea..a21185d4788 100644
--- a/include/asm-powerpc/cputime.h
+++ b/include/asm-powerpc/cputime.h
@@ -1 +1,203 @@
+/*
+ * Definitions for measuring cputime on powerpc machines.
+ *
+ * Copyright (C) 2006 Paul Mackerras, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * If we have CONFIG_VIRT_CPU_ACCOUNTING, we measure cpu time in
+ * the same units as the timebase. Otherwise we measure cpu time
+ * in jiffies using the generic definitions.
+ */
+
+#ifndef __POWERPC_CPUTIME_H
+#define __POWERPC_CPUTIME_H
+
+#ifndef CONFIG_VIRT_CPU_ACCOUNTING
#include <asm-generic/cputime.h>
+#else
+
+#include <linux/types.h>
+#include <linux/time.h>
+#include <asm/div64.h>
+#include <asm/time.h>
+#include <asm/param.h>
+
+typedef u64 cputime_t;
+typedef u64 cputime64_t;
+
+#define cputime_zero ((cputime_t)0)
+#define cputime_max ((~((cputime_t)0) >> 1) - 1)
+#define cputime_add(__a, __b) ((__a) + (__b))
+#define cputime_sub(__a, __b) ((__a) - (__b))
+#define cputime_div(__a, __n) ((__a) / (__n))
+#define cputime_halve(__a) ((__a) >> 1)
+#define cputime_eq(__a, __b) ((__a) == (__b))
+#define cputime_gt(__a, __b) ((__a) > (__b))
+#define cputime_ge(__a, __b) ((__a) >= (__b))
+#define cputime_lt(__a, __b) ((__a) < (__b))
+#define cputime_le(__a, __b) ((__a) <= (__b))
+
+#define cputime64_zero ((cputime64_t)0)
+#define cputime64_add(__a, __b) ((__a) + (__b))
+#define cputime_to_cputime64(__ct) (__ct)
+
+#ifdef __KERNEL__
+
+/*
+ * Convert cputime <-> jiffies
+ */
+extern u64 __cputime_jiffies_factor;
+
+static inline unsigned long cputime_to_jiffies(const cputime_t ct)
+{
+ return mulhdu(ct, __cputime_jiffies_factor);
+}
+
+static inline cputime_t jiffies_to_cputime(const unsigned long jif)
+{
+ cputime_t ct;
+ unsigned long sec;
+
+ /* have to be a little careful about overflow */
+ ct = jif % HZ;
+ sec = jif / HZ;
+ if (ct) {
+ ct *= tb_ticks_per_sec;
+ do_div(ct, HZ);
+ }
+ if (sec)
+ ct += (cputime_t) sec * tb_ticks_per_sec;
+ return ct;
+}
+
+static inline u64 cputime64_to_jiffies64(const cputime_t ct)
+{
+ return mulhdu(ct, __cputime_jiffies_factor);
+}
+
+/*
+ * Convert cputime <-> milliseconds
+ */
+extern u64 __cputime_msec_factor;
+
+static inline unsigned long cputime_to_msecs(const cputime_t ct)
+{
+ return mulhdu(ct, __cputime_msec_factor);
+}
+
+static inline cputime_t msecs_to_cputime(const unsigned long ms)
+{
+ cputime_t ct;
+ unsigned long sec;
+
+ /* have to be a little careful about overflow */
+ ct = ms % 1000;
+ sec = ms / 1000;
+ if (ct) {
+ ct *= tb_ticks_per_sec;
+ do_div(ct, 1000);
+ }
+ if (sec)
+ ct += (cputime_t) sec * tb_ticks_per_sec;
+ return ct;
+}
+
+/*
+ * Convert cputime <-> seconds
+ */
+extern u64 __cputime_sec_factor;
+
+static inline unsigned long cputime_to_secs(const cputime_t ct)
+{
+ return mulhdu(ct, __cputime_sec_factor);
+}
+
+static inline cputime_t secs_to_cputime(const unsigned long sec)
+{
+ return (cputime_t) sec * tb_ticks_per_sec;
+}
+
+/*
+ * Convert cputime <-> timespec
+ */
+static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p)
+{
+ u64 x = ct;
+ unsigned int frac;
+
+ frac = do_div(x, tb_ticks_per_sec);
+ p->tv_sec = x;
+ x = (u64) frac * 1000000000;
+ do_div(x, tb_ticks_per_sec);
+ p->tv_nsec = x;
+}
+
+static inline cputime_t timespec_to_cputime(const struct timespec *p)
+{
+ cputime_t ct;
+
+ ct = (u64) p->tv_nsec * tb_ticks_per_sec;
+ do_div(ct, 1000000000);
+ return ct + (u64) p->tv_sec * tb_ticks_per_sec;
+}
+
+/*
+ * Convert cputime <-> timeval
+ */
+static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p)
+{
+ u64 x = ct;
+ unsigned int frac;
+
+ frac = do_div(x, tb_ticks_per_sec);
+ p->tv_sec = x;
+ x = (u64) frac * 1000000;
+ do_div(x, tb_ticks_per_sec);
+ p->tv_usec = x;
+}
+
+static inline cputime_t timeval_to_cputime(const struct timeval *p)
+{
+ cputime_t ct;
+
+ ct = (u64) p->tv_usec * tb_ticks_per_sec;
+ do_div(ct, 1000000);
+ return ct + (u64) p->tv_sec * tb_ticks_per_sec;
+}
+
+/*
+ * Convert cputime <-> clock_t (units of 1/USER_HZ seconds)
+ */
+extern u64 __cputime_clockt_factor;
+
+static inline unsigned long cputime_to_clock_t(const cputime_t ct)
+{
+ return mulhdu(ct, __cputime_clockt_factor);
+}
+
+static inline cputime_t clock_t_to_cputime(const unsigned long clk)
+{
+ cputime_t ct;
+ unsigned long sec;
+
+ /* have to be a little careful about overflow */
+ ct = clk % USER_HZ;
+ sec = clk / USER_HZ;
+ if (ct) {
+ ct *= tb_ticks_per_sec;
+ do_div(ct, USER_HZ);
+ }
+ if (sec)
+ ct += (cputime_t) sec * tb_ticks_per_sec;
+ return ct;
+}
+
+#define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct))
+
+#endif /* __KERNEL__ */
+#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
+#endif /* __POWERPC_CPUTIME_H */
diff --git a/include/asm-powerpc/irq.h b/include/asm-powerpc/irq.h
index 8eb7e857ec4..51f87d9993b 100644
--- a/include/asm-powerpc/irq.h
+++ b/include/asm-powerpc/irq.h
@@ -479,6 +479,10 @@ extern int distribute_irqs;
struct irqaction;
struct pt_regs;
+#define __ARCH_HAS_DO_SOFTIRQ
+
+extern void __do_softirq(void);
+
#ifdef CONFIG_IRQSTACKS
/*
* Per-cpu stacks for handling hard and soft interrupts.
@@ -491,8 +495,6 @@ extern void call_do_softirq(struct thread_info *tp);
extern int call___do_IRQ(int irq, struct pt_regs *regs,
struct thread_info *tp);
-#define __ARCH_HAS_DO_SOFTIRQ
-
#else
#define irq_ctx_init()
diff --git a/include/asm-powerpc/paca.h b/include/asm-powerpc/paca.h
index ec94b51074f..4465b95ebef 100644
--- a/include/asm-powerpc/paca.h
+++ b/include/asm-powerpc/paca.h
@@ -96,6 +96,11 @@ struct paca_struct {
u64 saved_r1; /* r1 save for RTAS calls */
u64 saved_msr; /* MSR saved here by enter_rtas */
u8 proc_enabled; /* irq soft-enable flag */
+
+ /* Stuff for accurate time accounting */
+ u64 user_time; /* accumulated usermode TB ticks */
+ u64 system_time; /* accumulated system TB ticks */
+ u64 startpurr; /* PURR/TB value snapshot */
};
extern struct paca_struct paca[];
diff --git a/include/asm-powerpc/ppc_asm.h b/include/asm-powerpc/ppc_asm.h
index ab8688d3902..dd1c0a913d5 100644
--- a/include/asm-powerpc/ppc_asm.h
+++ b/include/asm-powerpc/ppc_asm.h
@@ -15,6 +15,48 @@
#define SZL (BITS_PER_LONG/8)
/*
+ * Stuff for accurate CPU time accounting.
+ * These macros handle transitions between user and system state
+ * in exception entry and exit and accumulate time to the
+ * user_time and system_time fields in the paca.
+ */
+
+#ifndef CONFIG_VIRT_CPU_ACCOUNTING
+#define ACCOUNT_CPU_USER_ENTRY(ra, rb)
+#define ACCOUNT_CPU_USER_EXIT(ra, rb)
+#else
+#define ACCOUNT_CPU_USER_ENTRY(ra, rb) \
+ beq 2f; /* if from kernel mode */ \
+BEGIN_FTR_SECTION; \
+ mfspr ra,SPRN_PURR; /* get processor util. reg */ \
+END_FTR_SECTION_IFSET(CPU_FTR_PURR); \
+BEGIN_FTR_SECTION; \
+ mftb ra; /* or get TB if no PURR */ \
+END_FTR_SECTION_IFCLR(CPU_FTR_PURR); \
+ ld rb,PACA_STARTPURR(r13); \
+ std ra,PACA_STARTPURR(r13); \
+ subf rb,rb,ra; /* subtract start value */ \
+ ld ra,PACA_USER_TIME(r13); \
+ add ra,ra,rb; /* add on to user time */ \
+ std ra,PACA_USER_TIME(r13); \
+2:
+
+#define ACCOUNT_CPU_USER_EXIT(ra, rb) \
+BEGIN_FTR_SECTION; \
+ mfspr ra,SPRN_PURR; /* get processor util. reg */ \
+END_FTR_SECTION_IFSET(CPU_FTR_PURR); \
+BEGIN_FTR_SECTION; \
+ mftb ra; /* or get TB if no PURR */ \
+END_FTR_SECTION_IFCLR(CPU_FTR_PURR); \
+ ld rb,PACA_STARTPURR(r13); \
+ std ra,PACA_STARTPURR(r13); \
+ subf rb,rb,ra; /* subtract start value */ \
+ ld ra,PACA_SYSTEM_TIME(r13); \
+ add ra,ra,rb; /* add on to user time */ \
+ std ra,PACA_SYSTEM_TIME(r13);
+#endif
+
+/*
* Macros for storing registers into and loading registers from
* exception frames.
*/
diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h
index d9bf53653b1..41b7a5b3d70 100644
--- a/include/asm-powerpc/system.h
+++ b/include/asm-powerpc/system.h
@@ -424,5 +424,9 @@ static inline void create_function_call(unsigned long addr, void * func)
create_branch(addr, func_addr, BRANCH_SET_LINK);
}
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+extern void account_system_vtime(struct task_struct *);
+#endif
+
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SYSTEM_H */
diff --git a/include/asm-powerpc/time.h b/include/asm-powerpc/time.h
index baddc9ab57a..912118db13a 100644
--- a/include/asm-powerpc/time.h
+++ b/include/asm-powerpc/time.h
@@ -41,6 +41,7 @@ extern time_t last_rtc_update;
extern void generic_calibrate_decr(void);
extern void wakeup_decrementer(void);
+extern void snapshot_timebase(void);
/* Some sane defaults: 125 MHz timebase, 1GHz processor */
extern unsigned long ppc_proc_freq;
@@ -221,5 +222,19 @@ struct cpu_usage {
DECLARE_PER_CPU(struct cpu_usage, cpu_usage_array);
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+extern void account_process_vtime(struct task_struct *tsk);
+#else
+#define account_process_vtime(tsk) do { } while (0)
+#endif
+
+#if defined(CONFIG_VIRT_CPU_ACCOUNTING) && defined(CONFIG_PPC_SPLPAR)
+extern void calculate_steal_time(void);
+extern void snapshot_timebases(void);
+#else
+#define calculate_steal_time() do { } while (0)
+#define snapshot_timebases() do { } while (0)
+#endif
+
#endif /* __KERNEL__ */
#endif /* __PPC64_TIME_H */