Commit-ID: 9d612beff5089b89a295a2331883a8ce3fff08c1
Gitweb: http://git.kernel.org/tip/9d612beff5089b89a295a2331883a8ce3fff08c1
Author: Li Zefan <lizf@xxxxxxxxxxxxxx>
AuthorDate: Wed, 24 Jun 2009 17:33:15 +0800
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Wed, 24 Jun 2009 11:41:12 +0200
tracing: Fix trace_buf_size boot option
We should be able to specify [KMG] when setting trace_buf_size
boot option, as documented in kernel-parameters.txt
Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
LKML-Reference: <4A41F2DB.4020102@xxxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
Documentation/kernel-parameters.txt | 3 ++-
kernel/trace/trace.c | 5 ++---
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 92e1ab8..d3f41db 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2475,7 +2475,8 @@ and is between 256 and 4096 characters. It is defined in the file
tp720= [HW,PS2]
- trace_buf_size=nn[KMG] [ftrace] will set tracing buffer size.
+ trace_buf_size=nn[KMG]
+ [FTRACE] will set tracing buffer size.
trix= [HW,OSS] MediaTrix AudioTrix Pro
Format:
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 3bb3100..3aa0a0d 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -284,13 +284,12 @@ void trace_wake_up(void)
static int __init set_buf_size(char *str)
{
unsigned long buf_size;
- int ret;
if (!str)
return 0;
- ret = strict_strtoul(str, 0, &buf_size);
+ buf_size = memparse(str, &str);
/* nr_entries can not be zero */
- if (ret < 0 || buf_size == 0)
+ if (buf_size == 0)
return 0;
trace_buf_size = buf_size;
return 1;
--
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