b=10466

[fs/lustre-release.git] / lnet / libcfs / tracefile.h

diff --git a/lnet/libcfs/tracefile.h b/lnet/libcfs/tracefile.h
index 1b6e7a0..4e7fdde 100644 (file)
--- a/lnet/libcfs/tracefile.h
+++ b/lnet/libcfs/tracefile.h
@@ -1,5 +1,7 @@
-#ifndef __PORTALS_TRACEFILE_H
-#define __PORTALS_TRACEFILE_H
+#ifndef __LIBCFS_TRACEFILE_H__
+#define __LIBCFS_TRACEFILE_H__
+
+#include <libcfs/libcfs.h>
 
 int tracefile_dump_all_pages(char *filename);
 void trace_debug_print(void);
@@ -12,11 +14,83 @@ int trace_write_daemon_file(struct file *file, const char *buffer,
                            unsigned long count, void *data);
 int trace_read_daemon_file(char *page, char **start, off_t off, int count,
                           int *eof, void *data);
-int trace_write_debug_size(struct file *file, const char *buffer,
-                           unsigned long count, void *data);
-int trace_read_debug_size(char *page, char **start, off_t off, int count,
-                          int *eof, void *data);
+int trace_write_debug_mb(struct file *file, const char *buffer,
+                        unsigned long count, void *data);
+int trace_read_debug_mb(char *page, char **start, off_t off, int count,
+                       int *eof, void *data);
 int trace_dk(struct file *file, const char *buffer, unsigned long count,
              void *data);
 
+#ifdef LUSTRE_TRACEFILE_PRIVATE
+/*
+ * Private declare for tracefile
+ */
+#define TCD_MAX_PAGES (5 << (20 - PAGE_SHIFT))
+
+#define TRACEFILE_SIZE (500 << 20)
+
+union trace_data_union {
+       struct trace_cpu_data {
+               struct list_head        tcd_pages;
+               unsigned long           tcd_cur_pages;
+
+               struct list_head        tcd_daemon_pages;
+               unsigned long           tcd_cur_daemon_pages;
+
+               unsigned long           tcd_max_pages;
+               int                     tcd_shutting_down;
+       } tcd;
+       char __pad[SMP_CACHE_BYTES];
+};
+
+struct page_collection {
+       struct list_head        pc_pages;
+       spinlock_t              pc_lock;
+       int                     pc_want_daemon_pages;
+};
+
+struct tracefiled_ctl {
+       struct completion       tctl_start;
+       struct completion       tctl_stop;
+       cfs_waitq_t             tctl_waitq; 
+       pid_t                   tctl_pid;
+       atomic_t                tctl_shutdown;
+};
+
+/*
+ * small data-structure for each page owned by tracefiled.
+ */
+struct trace_page {
+       /*
+        * page itself
+        */
+       cfs_page_t      *page;
+       /*
+        * linkage into one of the lists in trace_data_union or
+        * page_collection
+        */
+       struct list_head linkage;
+       /*
+        * number of bytes used within this page
+        */
+       unsigned int     used;
+       /*
+        * cpu that owns this page
+        */
+       int              cpu;
+};
+
+extern void set_ptldebug_header(struct ptldebug_header *header,
+                          int subsys, int mask, const int line,
+                          unsigned long stack);
+extern void print_to_console(struct ptldebug_header *hdr, int mask,
+                            char *buf, int len, char *file, const char *fn);
+extern struct trace_cpu_data * __trace_get_tcd (unsigned long *flags);
+extern void __trace_put_tcd (struct trace_cpu_data *tcd, unsigned long flags);
+
+#define trace_get_tcd(f)       __trace_get_tcd(&(f))
+#define trace_put_tcd(t, f)    __trace_put_tcd(t, f)
+
+#endif /* LUSTRE_TRACEFILE_PRIVATE */
+
 #endif /* __PORTALS_TRACEFILE_H */