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| author |   Steven Rostedt <srostedt@redhat.com> | 2011-08-08 21:39:39 -0400 |
|---|---|---|
| committer |   Steven Rostedt <rostedt@goodmis.org> | 2011-08-10 20:36:32 -0400 |
| commit | 3a301d7c1c68fd96bbcf82db82d9508918e0dc22 (patch) | |
| tree | c1fc544070e5b85bbdabe7a0bdd4b5859378e7a3 /kernel/trace | |
| parent | Linux 3.1-rc1 (diff) | |
| download | linux-dev-3a301d7c1c68fd96bbcf82db82d9508918e0dc22.tar.xz linux-dev-3a301d7c1c68fd96bbcf82db82d9508918e0dc22.zip | |
tracing: Clean up tb_fmt to not give faulty compile warning
gcc incorrectly states that the variable "fmt" is uninitialized when
CC_OPITMIZE_FOR_SIZE is set.
Instead of just blindly setting fmt to NULL, the code is cleaned up
a little to be a bit easier for humans to follow, as well as gcc
to know the variables are initialized.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace_printk.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/kernel/trace/trace_printk.c b/kernel/trace/trace_printk.c index 1f06468a10d7..6fd4ffd042f9 100644 --- a/kernel/trace/trace_printk.c +++ b/kernel/trace/trace_printk.c @@ -59,18 +59,19 @@ void hold_module_trace_bprintk_format(const char **start, const char **end) continue; } + fmt = NULL; tb_fmt = kmalloc(sizeof(*tb_fmt), GFP_KERNEL); - if (tb_fmt) + if (tb_fmt) { fmt = kmalloc(strlen(*iter) + 1, GFP_KERNEL); - if (tb_fmt && fmt) { - list_add_tail(&tb_fmt->list, &trace_bprintk_fmt_list); - strcpy(fmt, *iter); - tb_fmt->fmt = fmt; - *iter = tb_fmt->fmt; - } else { - kfree(tb_fmt); - *iter = NULL; + if (fmt) { + list_add_tail(&tb_fmt->list, &trace_bprintk_fmt_list); + strcpy(fmt, *iter); + tb_fmt->fmt = fmt; + } else + kfree(tb_fmt); } + *iter = fmt; + } mutex_unlock(&btrace_mutex); } |