#ifndef KERNELCOMPAT_H
#define KERNELCOMPAT_H
-#include "compiler.h"
+#include <kcompat.h>
#include <string.h>
+#include <sys/time.h>
+
+/* FIXME: libkcompat must not define arch-specific local ops, as ust *must*
+ * fallback to the normal atomic ops. Fix things so we don't add them and
+ * break things accidentally.
+ */
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
}
-/* FIXED SIZE INTEGERS */
-
-#include <stdint.h>
-
-typedef uint8_t u8;
-typedef uint16_t u16;
-typedef uint32_t u32;
-typedef uint64_t u64;
+/* Min / Max */
#define min_t(type, x, y) ({ \
type __min1 = (x); \
#define mutex_unlock(m) pthread_mutex_unlock(m)
-/* SPINLOCKS */
-
-typedef int spinlock_t;
-
-#define spin_lock(a) /* nothing */
-#define spin_unlock(a) /* nothing */
-#define spin_lock_init(a) /* nothing */
-
/* MALLOCATION */
#include <stdio.h>
#define printk(fmt, args...) printf(fmt, ## args)
-/* MEMORY BARRIERS */
-
-#define smp_rmb() do {} while(0)
-#define smp_wmb() do {} while(0)
-#define smp_mb() do {} while(0)
-#define smp_mb__after_atomic_inc() do {} while(0)
-
-#define read_barrier_depends() do {} while(0)
-#define smp_read_barrier_depends() do {} while(0)
-
-/* RCU */
-
-#define rcu_assign_pointer(a, b) do {} while(0)
-#define call_rcu_sched(a,b) do {} while(0)
-#define rcu_barrier_sched() do {} while(0)
-#define rcu_read_lock_sched_notrace() do{} while (0)
-#define rcu_read_unlock_sched_notrace() do{} while (0)
-
-/* ATOMICITY */
-
-#include <signal.h>
-
-typedef struct { sig_atomic_t counter; } atomic_t;
-
-static inline int atomic_dec_and_test(atomic_t *p)
-{
- (p->counter)--;
- return !p->counter;
-}
-
-static inline void atomic_set(atomic_t *p, int v)
-{
- p->counter=v;
-}
-
-static inline void atomic_inc(atomic_t *p)
-{
- p->counter++;
-}
-
-static int atomic_read(atomic_t *p)
-{
- return p->counter;
-}
-
-#define atomic_long_t atomic_t
-#define atomic_long_set atomic_set
-#define atomic_long_read atomic_read
-
-#include "asm.h"
-
-#define __xg(x) ((volatile long *)(x))
-
-#define cmpxchg(ptr, o, n) \
- ((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \
- (unsigned long)(n), sizeof(*(ptr))))
-
-static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
- unsigned long new, int size)
-{
- unsigned long prev;
- switch (size) {
- case 1:
- asm volatile("lock cmpxchgb %b1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 2:
- asm volatile("lock cmpxchgw %w1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 4:
- asm volatile("lock cmpxchgl %k1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 8:
- asm volatile("lock cmpxchgq %1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- }
- return old;
-}
-
-//#define local_cmpxchg cmpxchg
-#define local_cmpxchg(l, o, n) (cmpxchg(&((l)->a.counter), (o), (n)))
-
-#define atomic_long_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
-
-
-/* LOCAL OPS */
-
-//typedef int local_t;
-typedef struct
-{
- atomic_long_t a;
-} local_t;
-
-
-static inline void local_inc(local_t *l)
-{
- (l->a.counter)++;
-}
-
-static inline void local_set(local_t *l, int v)
-{
- l->a.counter = v;
-}
-
-static inline void local_add(int v, local_t *l)
-{
- l->a.counter += v;
-}
-
-static int local_add_return(int v, local_t *l)
-{
- return l->a.counter += v;
-}
-
-static inline int local_read(local_t *l)
-{
- return l->a.counter;
-}
-
/* ATTRIBUTES */
#define ____cacheline_aligned
-#define __init
-#define __exit
/* MATH */
#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
#define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
#define PAGE_SIZE sysconf(_SC_PAGE_SIZE)
-#define PAGE_MASK (PAGE_SIZE-1)
+#define PAGE_MASK (~(PAGE_SIZE-1))
/* TRACE CLOCK */
+/* There are two types of clocks that can be used.
+ - TSC based clock
+ - gettimeofday() clock
+
+ Microbenchmarks on Linux 2.6.30 on Core2 Duo 3GHz (functions are inlined):
+ Calls (100000000) to tsc(): 4004035641 cycles or 40 cycles/call
+ Calls (100000000) to gettimeofday(): 9723158352 cycles or 97 cycles/call
+
+ For merging traces with the kernel, a time source compatible with that of
+ the kernel is necessary.
+
+*/
+
+#if 0
+/* WARNING: Make sure to set frequency and scaling functions that will not
+ * result in lttv timestamps (sec.nsec) with seconds greater than 2**32-1.
+ */
static inline u64 trace_clock_read64(void)
{
- return 0LL;
-}
+ uint32_t low;
+ uint32_t high;
+ uint64_t retval;
+ __asm__ volatile ("rdtsc\n" : "=a" (low), "=d" (high));
-static inline unsigned int trace_clock_frequency(void)
-{
- return 0LL;
+ retval = high;
+ retval <<= 32;
+ return retval | low;
}
+#endif
-static inline u32 trace_clock_freq_scale(void)
+static inline u64 trace_clock_read64(void)
{
- return 0;
-}
-
+ struct timeval tv;
+ u64 retval;
-/* LISTS */
+ gettimeofday(&tv, NULL);
+ retval = tv.tv_sec;
+ retval *= 1000000;
+ retval += tv.tv_usec;
-#define list_add_rcu list_add
-#define list_for_each_entry_rcu list_for_each_entry
+ return retval;
+}
+static inline u64 trace_clock_frequency(void)
+{
+ return 1000000LL;
+}
-#define EXPORT_SYMBOL_GPL(a) /*nothing*/
+static inline u32 trace_clock_freq_scale(void)
+{
+ return 1;
+}
-#define smp_processor_id() (-1)
#endif /* KERNELCOMPAT_H */
projects / ust.git / blobdiff