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| author | Steven Rostedt <srostedt@redhat.com> | 2012-04-25 07:45:26 +0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2012-05-17 03:58:45 +0400 |
| commit | 706c81f87f84adbcf1f6553b9e6b69b3e28fc35a (patch) | |
| tree | 0075a28af7df96962e5e292784f6ee50d456f23d /kernel/trace | |
| parent | 9fd49328fc2a1cbfea542bcbcf004b5c81dc495b (diff) | |
| download | linux-706c81f87f84adbcf1f6553b9e6b69b3e28fc35a.tar.xz | |
ftrace: Remove extra helper functions
The ftrace_record_ip() and ftrace_alloc_dyn_node() were from the
time of the ftrace daemon. Although they were still used, they
still make things a bit more complex than necessary.
Move the code into the one function that uses it, and remove the
helper functions.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/ftrace.c | 61 |
1 files changed, 24 insertions, 37 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 53ed01ed7aa7..e10f9e522c44 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1520,35 +1520,6 @@ static void ftrace_hash_rec_enable(struct ftrace_ops *ops, __ftrace_hash_rec_update(ops, filter_hash, 1); } -static struct dyn_ftrace *ftrace_alloc_dyn_node(unsigned long ip) -{ - if (ftrace_pages->index == ftrace_pages->size) { - /* We should have allocated enough */ - if (WARN_ON(!ftrace_pages->next)) - return NULL; - ftrace_pages = ftrace_pages->next; - } - - return &ftrace_pages->records[ftrace_pages->index++]; -} - -static struct dyn_ftrace * -ftrace_record_ip(unsigned long ip) -{ - struct dyn_ftrace *rec; - - if (ftrace_disabled) - return NULL; - - rec = ftrace_alloc_dyn_node(ip); - if (!rec) - return NULL; - - rec->ip = ip; - - return rec; -} - static void print_ip_ins(const char *fmt, unsigned char *p) { int i; @@ -3693,7 +3664,9 @@ static int ftrace_process_locs(struct module *mod, unsigned long *start, unsigned long *end) { + struct ftrace_page *start_pg; struct ftrace_page *pg; + struct dyn_ftrace *rec; unsigned long count; unsigned long *p; unsigned long addr; @@ -3708,8 +3681,8 @@ static int ftrace_process_locs(struct module *mod, sort(start, count, sizeof(*start), ftrace_cmp_ips, ftrace_swap_ips); - pg = ftrace_allocate_pages(count); - if (!pg) + start_pg = ftrace_allocate_pages(count); + if (!start_pg) return -ENOMEM; mutex_lock(&ftrace_lock); @@ -3722,7 +3695,7 @@ static int ftrace_process_locs(struct module *mod, if (!mod) { WARN_ON(ftrace_pages || ftrace_pages_start); /* First initialization */ - ftrace_pages = ftrace_pages_start = pg; + ftrace_pages = ftrace_pages_start = start_pg; } else { if (!ftrace_pages) goto out; @@ -3733,11 +3706,11 @@ static int ftrace_process_locs(struct module *mod, ftrace_pages = ftrace_pages->next; } - ftrace_pages->next = pg; - ftrace_pages = pg; + ftrace_pages->next = start_pg; } p = start; + pg = start_pg; while (p < end) { addr = ftrace_call_adjust(*p++); /* @@ -3748,12 +3721,26 @@ static int ftrace_process_locs(struct module *mod, */ if (!addr) continue; - if (!ftrace_record_ip(addr)) - break; + + if (pg->index == pg->size) { + /* We should have allocated enough */ + if (WARN_ON(!pg->next)) + break; + pg = pg->next; + } + + rec = &pg->records[pg->index++]; + rec->ip = addr; } + /* We should have used all pages */ + WARN_ON(pg->next); + + /* Assign the last page to ftrace_pages */ + ftrace_pages = pg; + /* These new locations need to be initialized */ - ftrace_new_pgs = pg; + ftrace_new_pgs = start_pg; /* * We only need to disable interrupts on start up |