+++ /dev/null
-/* Copyright (C) 2009 Pierre-Marc Fournier
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef KERNELCOMPAT_H
-#define KERNELCOMPAT_H
-
-#include <ust/kcompat/kcompat.h>
-#include <urcu/list.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); \
- (type *)( (char *)__mptr - offsetof(type,member) );})
-
-/* ERROR OPS */
-#define MAX_ERRNO 4095
-
-#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
-
-static inline void *ERR_PTR(long error)
-{
- return (void *) error;
-}
-
-static inline long PTR_ERR(const void *ptr)
-{
- return (long) ptr;
-}
-
-static inline long IS_ERR(const void *ptr)
-{
- return IS_ERR_VALUE((unsigned long)ptr);
-}
-
-
-/* Min / Max */
-
-#define min_t(type, x, y) ({ \
- type __min1 = (x); \
- type __min2 = (y); \
- __min1 < __min2 ? __min1: __min2; })
-
-#define max_t(type, x, y) ({ \
- type __max1 = (x); \
- type __max2 = (y); \
- __max1 > __max2 ? __max1: __max2; })
-
-
-/* MUTEXES */
-
-#include <pthread.h>
-
-#define DEFINE_MUTEX(m) pthread_mutex_t (m) = PTHREAD_MUTEX_INITIALIZER;
-#define DECLARE_MUTEX(m) extern pthread_mutex_t (m);
-
-#define mutex_lock(m) pthread_mutex_lock(m)
-
-#define mutex_unlock(m) pthread_mutex_unlock(m)
-
-
-/* MALLOCATION */
-
-#define zmalloc(s) calloc(1, s)
-
-/* ATTRIBUTES */
-
-/* FIXME: define this */
-#define ____cacheline_aligned
-
-/* MATH */
-
-#include <ust/processor.h>
-static inline unsigned int hweight32(unsigned int w)
-{
- unsigned int res = w - ((w >> 1) & 0x55555555);
- res = (res & 0x33333333) + ((res >> 2) & 0x33333333);
- res = (res + (res >> 4)) & 0x0F0F0F0F;
- res = res + (res >> 8);
- return (res + (res >> 16)) & 0x000000FF;
-}
-
-static __inline__ int get_count_order(unsigned int count)
-{
- int order;
-
- order = fls(count) - 1;
- if (count & (count - 1))
- order++;
- return order;
-}
-
-
-
-
-#include <unistd.h>
-
-#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
-#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))
-
-
-
-
-/* ARRAYS */
-
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
-
-/* 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)
-{
- uint32_t low;
- uint32_t high;
- uint64_t retval;
- __asm__ volatile ("rdtsc\n" : "=a" (low), "=d" (high));
-
- retval = high;
- retval <<= 32;
- return retval | low;
-}
-#endif
-
-#include <sys/time.h>
-
-static inline u64 trace_clock_read64(void)
-{
- struct timeval tv;
- u64 retval;
-
- gettimeofday(&tv, NULL);
- retval = tv.tv_sec;
- retval *= 1000000;
- retval += tv.tv_usec;
-
- return retval;
-}
-
-static inline u64 trace_clock_frequency(void)
-{
- return 1000000LL;
-}
-
-static inline u32 trace_clock_freq_scale(void)
-{
- return 1;
-}
-
-#endif /* KERNELCOMPAT_H */
projects / ust.git / blobdiff