src/patches/suse-2.6.27.25/patches.trace/tracepoints-use-table-size-macro.patch

   1 From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
   2 Subject: Tracepoints use TABLE_SIZE macro
   3
   4 Steven Rostedt <rostedt@goodmis.org> :
   5
   6 Wouldn't it look nicer to have: (TRACEPOINT_TABLE_SIZE - 1) ?
   7
   8 me :
   9
  10 Sure,
  11
  12 Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
  13 CC: Steven Rostedt <rostedt@goodmis.org>
  14 CC: akpm@linux-foundation.org
  15 CC: Ingo Molnar <mingo@elte.hu>
  16 CC: Peter Zijlstra <peterz@infradead.org>
  17 CC: Masami Hiramatsu <mhiramat@redhat.com>
  18 CC: "Frank Ch. Eigler" <fche@redhat.com>
  19 CC: Hideo AOKI <haoki@redhat.com>
  20 CC: Takashi Nishiie <t-nishiie@np.css.fujitsu.com>
  21 CC: Alexander Viro <viro@zeniv.linux.org.uk>
  22 CC: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
  23 Acked-by: Jan Blunck <jblunck@suse.de>
  24 ---
  25  kernel/tracepoint.c |    6 +++---
  26  1 file changed, 3 insertions(+), 3 deletions(-)
  27
  28 Index: linux-2.6-lttng/kernel/tracepoint.c
  29 ===================================================================
  30 --- linux-2.6-lttng.orig/kernel/tracepoint.c    2008-07-24 16:33:52.000000000 -0400
  31 +++ linux-2.6-lttng/kernel/tracepoint.c 2008-07-24 16:34:57.000000000 -0400
  32 @@ -177,7 +177,7 @@ static struct tracepoint_entry *get_trac
  33         struct tracepoint_entry *e;
  34         u32 hash = jhash(name, strlen(name), 0);
  35
  36 -       head = &tracepoint_table[hash & ((1 << TRACEPOINT_HASH_BITS)-1)];
  37 +       head = &tracepoint_table[hash & (TRACEPOINT_TABLE_SIZE - 1)];
  38         hlist_for_each_entry(e, node, head, hlist) {
  39                 if (!strcmp(name, e->name))
  40                         return e;
  41 @@ -197,7 +197,7 @@ static struct tracepoint_entry *add_trac
  42         size_t name_len = strlen(name) + 1;
  43         u32 hash = jhash(name, name_len-1, 0);
  44
  45 -       head = &tracepoint_table[hash & ((1 << TRACEPOINT_HASH_BITS)-1)];
  46 +       head = &tracepoint_table[hash & (TRACEPOINT_TABLE_SIZE - 1)];
  47         hlist_for_each_entry(e, node, head, hlist) {
  48                 if (!strcmp(name, e->name)) {
  49                         printk(KERN_NOTICE
  50 @@ -233,7 +233,7 @@ static int remove_tracepoint(const char
  51         size_t len = strlen(name) + 1;
  52         u32 hash = jhash(name, len-1, 0);
  53
  54 -       head = &tracepoint_table[hash & ((1 << TRACEPOINT_HASH_BITS)-1)];
  55 +       head = &tracepoint_table[hash & (TRACEPOINT_TABLE_SIZE - 1)];
  56         hlist_for_each_entry(e, node, head, hlist) {
  57                 if (!strcmp(name, e->name)) {
  58                         found = 1;