Add gtod_cpu option for pinning gettimeofday() to a single CPU

[fio.git] / os / os-linux.h

diff --git a/os/os-linux.h b/os/os-linux.h
index a4f7b244172d2dbefc0b24ac754df9327640cc4a..6812acd25cb56a14a0095818627113a77ec673fd 100644 (file)
--- a/os/os-linux.h
+++ b/os/os-linux.h
@@ -10,6 +10,8 @@
 #include <linux/raw.h>
 #include <linux/major.h>
 
+#include "indirect.h"
+
 #define FIO_HAVE_LIBAIO
 #define FIO_HAVE_POSIXAIO
 #define FIO_HAVE_FADVISE
@@ -22,22 +24,49 @@
 #define FIO_HAVE_ODIRECT
 #define FIO_HAVE_HUGETLB
 #define FIO_HAVE_RAWBIND
+#define FIO_HAVE_BLKTRACE
+#define FIO_HAVE_STRSEP
+#define FIO_HAVE_FALLOCATE
+#define FIO_HAVE_POSIXAIO_FSYNC
+
+#define OS_MAP_ANON            MAP_ANONYMOUS
 
-#define OS_MAP_ANON            (MAP_ANONYMOUS)
+#ifndef CLOCK_MONOTONIC
+#define CLOCK_MONOTONIC 1
+#endif
 
+#ifdef FIO_HAVE_CPU_AFFINITY
 typedef cpu_set_t os_cpu_mask_t;
+#else
+typedef int os_cpu_mask_t;
+#endif
 typedef struct drand48_data os_random_state_t;
 
 /*
  * we want fadvise64 really, but it's so tangled... later
  */
+#ifdef FIO_HAVE_FADVISE
 #define fadvise(fd, off, len, advice)  \
        posix_fadvise((fd), (off_t)(off), (len), (advice))
+#endif
 
+/*
+ * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
+ * the affinity helpers to work.
+ */
+#ifndef GLIBC_2_3_2
 #define fio_setaffinity(td)            \
        sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask)
 #define fio_getaffinity(pid, ptr)      \
        sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
+#else
+#define fio_setaffinity(td)            \
+       sched_setaffinity((td)->pid, &(td)->o.cpumask)
+#define fio_getaffinity(pid, ptr)      \
+       sched_getaffinity((pid), (ptr))
+#endif
+
+#define fio_cpu_clear(mask, cpu)       CPU_CLR((cpu), (mask))
 
 static inline int ioprio_set(int which, int who, int ioprio)
 {
@@ -57,7 +86,7 @@ static inline int ioprio_set(int which, int who, int ioprio)
 #define SPLICE_F_GIFT   (0x08)  /* pages passed in are a gift */
 
 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
-                        size_t len, unsigned long flags)
+                        size_t len, unsigned int flags)
 {
        return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
 }
@@ -87,7 +116,7 @@ struct async_head_user;
 static inline struct syslet_uatom *
 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
 {
-       return (void *) syscall(__NR_async_exec, atom, ahu);
+       return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu);
 }
 
 static inline long
@@ -171,14 +200,6 @@ static inline long os_random_long(os_random_state_t *rs)
        return val;
 }
 
-static inline double os_random_double(os_random_state_t *rs)
-{
-       double val;
-
-       drand48_r(rs, &val);
-       return val;
-}
-
 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
 {
        struct raw_config_request rq;
@@ -209,4 +230,10 @@ static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
        return 0;
 }
 
+#ifdef O_NOATIME
+#define FIO_O_NOATIME  O_NOATIME
+#else
+#define FIO_O_NOATIME  0
+#endif
+
 #endif