1 /** 2 * @file compat24.h 3 * Compatability functions for 2.4 kernels 4 * 5 * @remark Copyright 2002 OProfile authors 6 * @remark Read the file COPYING 7 * 8 * @author John Levon 9 * @author Philippe Elie 10 */ 11 12 #ifndef COMPAT24_H 13 #define COMPAT24_H 14 15 #include <linux/version.h> 16 17 static inline pid_t op_get_tgid(void) 18 { 19 return current->tgid; 20 } 21 22 #define pte_page_address(a) page_address(pte_page(a)) 23 #define oprof_wake_up(w) wake_up(w) 24 #define lock_rtc(f) spin_lock_irqsave(&rtc_lock, f) 25 #define unlock_rtc(f) spin_unlock_irqrestore(&rtc_lock, f) 26 #define wind_dentries(d, v, r, m) wind_dentries_2_4(d, v, r, m) 27 extern uint do_path_hash_2_4(struct dentry * dentry, struct vfsmount * vfsmnt); 28 #define hash_path(f) do_path_hash_2_4((f)->f_dentry, (f)->f_vfsmnt) 29 #define request_region_check request_region 30 #define op_cpu_id() cpu_number_map(smp_processor_id()) 31 #define GET_VM_OFFSET(v) ((v)->vm_pgoff << PAGE_SHIFT) 32 #define PTRACE_OFF(t) ((t)->ptrace &= ~PT_DTRACE) 33 #define lock_execve() do { } while (0) 34 #define unlock_execve() do { } while (0) 35 #define lock_out_mmap() do { } while (0) 36 #define unlock_out_mmap() do { } while (0) 37 #define HAVE_MMAP2 38 #define HAVE_FILE_OPERATIONS_OWNER 39 40 /* ->owner field in 2.4 */ 41 #define INC_USE_COUNT_MAYBE 42 #define DEC_USE_COUNT_MAYBE 43 44 /* no global waitqueue spinlock in 2.4 */ 45 #define wq_is_lockable() (1) 46 47 /* 2.4.3 introduced rw mmap semaphore */ 48 #if V_AT_LEAST(2, 4, 3) 49 #define lock_mmap(mm) down_read(&mm->mmap_sem) 50 #define unlock_mmap(mm) up_read(&mm->mmap_sem) 51 #else 52 #define lock_mmap(mm) down(&mm->mmap_sem) 53 #define unlock_mmap(mm) up(&mm->mmap_sem) 54 #endif 55 56 /* 2.4.26 exported the needed stuff for HT support */ 57 #if V_AT_LEAST(2, 4, 26) && defined(CONFIG_SMP) 58 #define HT_SUPPORT 59 #endif 60 61 #endif /* COMPAT24_H */ 62
