oprofile 0.9.6
Copy in the rest of the oprofile 0.9.6 tree so we have a source
copy to match the prebuilt binaries that are checked into
external/.
Change-Id: Iaac327571d5d583594a4194973bf256569061048
diff --git a/module/compat22.h b/module/compat22.h
new file mode 100644
index 0000000..ac294d3
--- /dev/null
+++ b/module/compat22.h
@@ -0,0 +1,153 @@
+/**
+ * @file compat22.h
+ * Compatability functions for 2.2 kernels
+ *
+ * @remark Copyright 2002 OProfile authors
+ * @remark Read the file COPYING
+ *
+ * @author John Levon
+ * @author Philippe Elie
+ */
+
+#ifndef COMPAT22_H
+#define COMPAT22_H
+
+#include <linux/smp_lock.h>
+
+#define local_irq_disable() __cli()
+#define local_irq_enable() __sti()
+#define pte_page_address(a) pte_page(a)
+
+#define GET_VM_OFFSET(v) ((v)->vm_offset)
+#define MODULE_LICENSE(l)
+#define NEED_2_2_DENTRIES
+#define INC_USE_COUNT_MAYBE MOD_INC_USE_COUNT
+#define DEC_USE_COUNT_MAYBE MOD_DEC_USE_COUNT
+#define lock_execve lock_kernel
+#define unlock_execve unlock_kernel
+
+/* BKL-protected on 2.2 */
+#define lock_mmap(mm) do {} while (0)
+#define unlock_mmap(mm) do {} while (0)
+
+/* on 2.2 we use pid as tgid, thread seperation is possible but
+ * each thread is in its own thread group */
+static inline pid_t op_get_tgid(void)
+{
+ return current->pid;
+}
+
+/* the wake_up path doesn't disable interrupts for wait queue
+ * manipulation. So let's force it to.
+ */
+static inline void oprof_wake_up(struct wait_queue **q)
+{
+ unsigned long flags;
+ save_flags(flags);
+ cli();
+ wake_up(q);
+ restore_flags(flags);
+}
+
+extern int wind_dentries_2_2(struct dentry * dentry);
+extern uint do_path_hash_2_2(struct dentry * dentry);
+#define wind_dentries(d, v, r, m) wind_dentries_2_2(d)
+#define hash_path(f) do_path_hash_2_2((f)->f_dentry)
+
+static inline void lock_out_mmap(void)
+{
+ lock_kernel();
+ down(¤t->mm->mmap_sem);
+}
+
+static inline void unlock_out_mmap(void)
+{
+ unlock_kernel();
+ up(¤t->mm->mmap_sem);
+}
+
+/* different request_region */
+#define request_region_check compat_request_region
+void * compat_request_region (unsigned long start, unsigned long n, char const * name);
+
+#define __exit
+
+#define virt_to_page(va) MAP_NR(va)
+
+/* 2.2 has no cpu_number_map on UP */
+#ifdef CONFIG_SMP
+ #define op_cpu_id() cpu_number_map[smp_processor_id()]
+#else
+ #define op_cpu_id() smp_processor_id()
+#endif /* CONFIG_SMP */
+
+/* provide a working smp_call_function */
+#if !defined(CONFIG_SMP)
+
+ #undef smp_call_function
+ static int inline smp_call_function (void (*func) (void * info), void * info,
+ int retry, int wait)
+ {
+ return 0;
+ }
+
+#endif /* !CONFIG_SMP */
+
+#if V_BEFORE(2, 2, 18)
+
+ /* 2.2.18 introduced module_init */
+ /* Not sure what version aliases were introduced in, but certainly in 2.91.66. */
+ #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 91)
+ #define module_init(x) int init_module(void) __attribute__((alias(#x)));
+ #define module_exit(x) void cleanup_module(void) __attribute__((alias(#x)));
+ #else
+ #define module_init(x) int init_module(void) { return x(); }
+ #define module_exit(x) void cleanup_module(void) { x(); }
+ #endif
+
+ /* 2.2.18 introduced vmalloc_32 */
+ #define vmalloc_32 vmalloc
+
+ /* 2.2.18 add doubled linked list wait_queue and mutex */
+ #define DECLARE_WAIT_QUEUE_HEAD(q) struct wait_queue * q = NULL
+ #define DECLARE_MUTEX(foo) struct semaphore foo = MUTEX
+
+ /* 2.2.18 add THIS_MODULE */
+ #define THIS_MODULE (&__this_module)
+
+ /* 2.2.18 add BUG() FIXME: this is arch dependant would must use
+ * *(char *)0 = 0 instead ? */
+ #define BUG() __asm__ __volatile__("ud2\n");
+
+#endif /* V_BEFORE(2,2,18) */
+
+/* 2.2.18 introduced the rtc lock */
+#ifdef RTC_LOCK
+ #define lock_rtc(f) spin_lock_irqsave(&rtc_lock, f)
+ #define unlock_rtc(f) spin_unlock_irqrestore(&rtc_lock, f)
+#else
+ #define lock_rtc(f) do { save_flags(f); cli(); } while (0)
+ #define unlock_rtc(f) restore_flags(f)
+#endif /* RTC_LOCK */
+
+#if V_AT_LEAST(2, 2, 20)
+ #define PTRACE_OFF(t) ((t)->ptrace &= ~PT_DTRACE)
+#else
+ #define PTRACE_OFF(t) ((t)->flags &= ~PF_DTRACE)
+#endif
+
+/* 2.2.21 introduced cpuid_edx */
+#if V_BEFORE(2, 2, 21)
+static inline unsigned int cpuid_edx(unsigned int op)
+{
+ unsigned int eax, edx;
+
+ __asm__("cpuid"
+ : "=a" (eax), "=d" (edx)
+ : "0" (op)
+ : "bx", "cx");
+ return edx;
+}
+#endif
+
+#endif /* COMPAT22_H */