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| author | Cyrill Gorcunov <gorcunov@gmail.com> | 2008-05-12 14:02:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-13 08:02:25 -0700 |
| commit | e662e1cfd434aa234b72fbc781f1d70211cb785b (patch) | |
| tree | f733af13c469b185ba4b4eb192f2834936200e9b /init/main.c | |
| parent | 67d7671036e6cae24ded112e079926d55ffe9580 (diff) | |
| download | lwn-e662e1cfd434aa234b72fbc781f1d70211cb785b.tar.gz lwn-e662e1cfd434aa234b72fbc781f1d70211cb785b.zip | |
init: don't lose initcall return values
There is an ability to lose an initcall return value if it happened with irq
disabled or imbalanced preemption (and if we debug initcall).
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init/main.c')
| -rw-r--r-- | init/main.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/init/main.c b/init/main.c index ddada7acf363..f406fefa626c 100644 --- a/init/main.c +++ b/init/main.c @@ -702,7 +702,6 @@ static void __init do_initcalls(void) for (call = __initcall_start; call < __initcall_end; call++) { ktime_t t0, t1, delta; - char *msg = NULL; char msgbuf[40]; int result; @@ -724,22 +723,23 @@ static void __init do_initcalls(void) (unsigned long long) delta.tv64 >> 20); } - if (result && result != -ENODEV && initcall_debug) { - sprintf(msgbuf, "error code %d", result); - msg = msgbuf; - } + msgbuf[0] = 0; + + if (result && result != -ENODEV && initcall_debug) + sprintf(msgbuf, "error code %d ", result); + if (preempt_count() != count) { - msg = "preemption imbalance"; + strncat(msgbuf, "preemption imbalance ", sizeof(msgbuf)); preempt_count() = count; } if (irqs_disabled()) { - msg = "disabled interrupts"; + strncat(msgbuf, "disabled interrupts ", sizeof(msgbuf)); local_irq_enable(); } - if (msg) { + if (msgbuf[0]) { print_fn_descriptor_symbol(KERN_WARNING "initcall %s()", (unsigned long) *call); - printk(" returned with %s\n", msg); + printk(" returned with %s\n", msgbuf); } } |