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authorTony Luck <tony.luck@intel.com>2008-04-17 10:12:27 -0700
committerTony Luck <tony.luck@intel.com>2008-04-17 10:12:27 -0700
commit14d0647c98f52e2d76113d44de6b771ec87a934f (patch)
tree4b9407b00ad0b5baf5ee6245a4157a07062680b5 /include/asm-ia64
parent2a467d5f7d6bdc90c365db167a10022dd8351894 (diff)
parentb64f34cdfe5bef9dfed1304c513220b0f2862eca (diff)
downloadop-kernel-dev-14d0647c98f52e2d76113d44de6b771ec87a934f.zip
op-kernel-dev-14d0647c98f52e2d76113d44de6b771ec87a934f.tar.gz
Pull virt-cpu-accounting into release branch
Diffstat (limited to 'include/asm-ia64')
-rw-r--r--include/asm-ia64/cputime.h104
-rw-r--r--include/asm-ia64/system.h12
-rw-r--r--include/asm-ia64/thread_info.h14
3 files changed, 130 insertions, 0 deletions
diff --git a/include/asm-ia64/cputime.h b/include/asm-ia64/cputime.h
index 72400a7..f9abdec 100644
--- a/include/asm-ia64/cputime.h
+++ b/include/asm-ia64/cputime.h
@@ -1,6 +1,110 @@
+/*
+ * include/asm-ia64/cputime.h:
+ * Definitions for measuring cputime on ia64 machines.
+ *
+ * Based on <asm-powerpc/cputime.h>.
+ *
+ * Copyright (C) 2007 FUJITSU LIMITED
+ * Copyright (C) 2007 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
+ *
+ * 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 nsec.
+ * Otherwise we measure cpu time in jiffies using the generic definitions.
+ */
+
#ifndef __IA64_CPUTIME_H
#define __IA64_CPUTIME_H
+#ifndef CONFIG_VIRT_CPU_ACCOUNTING
#include <asm-generic/cputime.h>
+#else
+
+#include <linux/time.h>
+#include <linux/jiffies.h>
+#include <asm/processor.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 cputime64_sub(__a, __b) ((__a) - (__b))
+#define cputime_to_cputime64(__ct) (__ct)
+
+/*
+ * Convert cputime <-> jiffies (HZ)
+ */
+#define cputime_to_jiffies(__ct) ((__ct) / (NSEC_PER_SEC / HZ))
+#define jiffies_to_cputime(__jif) ((__jif) * (NSEC_PER_SEC / HZ))
+#define cputime64_to_jiffies64(__ct) ((__ct) / (NSEC_PER_SEC / HZ))
+#define jiffies64_to_cputime64(__jif) ((__jif) * (NSEC_PER_SEC / HZ))
+
+/*
+ * Convert cputime <-> milliseconds
+ */
+#define cputime_to_msecs(__ct) ((__ct) / NSEC_PER_MSEC)
+#define msecs_to_cputime(__msecs) ((__msecs) * NSEC_PER_MSEC)
+
+/*
+ * Convert cputime <-> seconds
+ */
+#define cputime_to_secs(__ct) ((__ct) / NSEC_PER_SEC)
+#define secs_to_cputime(__secs) ((__secs) * NSEC_PER_SEC)
+
+/*
+ * Convert cputime <-> timespec (nsec)
+ */
+static inline cputime_t timespec_to_cputime(const struct timespec *val)
+{
+ cputime_t ret = val->tv_sec * NSEC_PER_SEC;
+ return (ret + val->tv_nsec);
+}
+static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
+{
+ val->tv_sec = ct / NSEC_PER_SEC;
+ val->tv_nsec = ct % NSEC_PER_SEC;
+}
+
+/*
+ * Convert cputime <-> timeval (msec)
+ */
+static inline cputime_t timeval_to_cputime(struct timeval *val)
+{
+ cputime_t ret = val->tv_sec * NSEC_PER_SEC;
+ return (ret + val->tv_usec * NSEC_PER_USEC);
+}
+static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
+{
+ val->tv_sec = ct / NSEC_PER_SEC;
+ val->tv_usec = (ct % NSEC_PER_SEC) / NSEC_PER_USEC;
+}
+
+/*
+ * Convert cputime <-> clock (USER_HZ)
+ */
+#define cputime_to_clock_t(__ct) ((__ct) / (NSEC_PER_SEC / USER_HZ))
+#define clock_t_to_cputime(__x) ((__x) * (NSEC_PER_SEC / USER_HZ))
+
+/*
+ * Convert cputime64 to clock.
+ */
+#define cputime64_to_clock_t(__ct) cputime_to_clock_t((cputime_t)__ct)
+#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
#endif /* __IA64_CPUTIME_H */
diff --git a/include/asm-ia64/system.h b/include/asm-ia64/system.h
index 595112b..dff8128 100644
--- a/include/asm-ia64/system.h
+++ b/include/asm-ia64/system.h
@@ -210,6 +210,13 @@ struct task_struct;
extern void ia64_save_extra (struct task_struct *task);
extern void ia64_load_extra (struct task_struct *task);
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+extern void ia64_account_on_switch (struct task_struct *prev, struct task_struct *next);
+# define IA64_ACCOUNT_ON_SWITCH(p,n) ia64_account_on_switch(p,n)
+#else
+# define IA64_ACCOUNT_ON_SWITCH(p,n)
+#endif
+
#ifdef CONFIG_PERFMON
DECLARE_PER_CPU(unsigned long, pfm_syst_info);
# define PERFMON_IS_SYSWIDE() (__get_cpu_var(pfm_syst_info) & 0x1)
@@ -222,6 +229,7 @@ extern void ia64_load_extra (struct task_struct *task);
|| IS_IA32_PROCESS(task_pt_regs(t)) || PERFMON_IS_SYSWIDE())
#define __switch_to(prev,next,last) do { \
+ IA64_ACCOUNT_ON_SWITCH(prev, next); \
if (IA64_HAS_EXTRA_STATE(prev)) \
ia64_save_extra(prev); \
if (IA64_HAS_EXTRA_STATE(next)) \
@@ -266,6 +274,10 @@ void cpu_idle_wait(void);
void default_idle(void);
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+extern void account_system_vtime(struct task_struct *);
+#endif
+
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
diff --git a/include/asm-ia64/thread_info.h b/include/asm-ia64/thread_info.h
index 93d83cb..6da8069 100644
--- a/include/asm-ia64/thread_info.h
+++ b/include/asm-ia64/thread_info.h
@@ -31,6 +31,12 @@ struct thread_info {
mm_segment_t addr_limit; /* user-level address space limit */
int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */
struct restart_block restart_block;
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ __u64 ac_stamp;
+ __u64 ac_leave;
+ __u64 ac_stime;
+ __u64 ac_utime;
+#endif
};
#define THREAD_SIZE KERNEL_STACK_SIZE
@@ -62,9 +68,17 @@ struct thread_info {
#define task_stack_page(tsk) ((void *)(tsk))
#define __HAVE_THREAD_FUNCTIONS
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+#define setup_thread_stack(p, org) \
+ *task_thread_info(p) = *task_thread_info(org); \
+ task_thread_info(p)->ac_stime = 0; \
+ task_thread_info(p)->ac_utime = 0; \
+ task_thread_info(p)->task = (p);
+#else
#define setup_thread_stack(p, org) \
*task_thread_info(p) = *task_thread_info(org); \
task_thread_info(p)->task = (p);
+#endif
#define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET)
#define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
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