linux-kernel - error: 'subbuf_idx' undeclared after enabling CONFIG_LTT_RELAY

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Date:	Mon, 22 Feb 2010 19:31:41 +0530
From:	naresh kamboju <naresh.kernel@...il.com>
To:	ltt-dev@...ts.casi.polymtl.ca
Cc:	linux-kernel@...r.kernel.org, mathieu.desnoyers@...icios.com,
	Thomas Gleixner <tglx@...utronix.de>
Subject: error: 'subbuf_idx' undeclared after enabling CONFIG_LTT_RELAY_LOCKED=y

Hi,

I have noticed below error after enabling CONFIG_LTT_RELAY_LOCKED=y

  CC      ltt/ltt-relay-locked.o
In file included from ltt/ltt-relay-locked.c:56:
ltt/ltt-relay-locked.h: In function 'ltt_check_deliver':
ltt/ltt-relay-locked.h:167:  (first use in this function)
ltt/ltt-relay-locked.h:167: error: (Each undeclared identifier is
reported only once
ltt/ltt-relay-locked.h:167: error: for each function it appears in.)

After my work around I have found error is caused from the
lttng-relay-locked-writer-use-noref-flag.patch

Below patch will fix the compilation issues.
Please review this patch.

---
 ltt/ltt-relay-locked.h |    2  1 +     1 -     0 !
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: b/ltt/ltt-relay-locked.h
===================================================================
--- a/ltt/ltt-relay-locked.h
+++ b/ltt/ltt-relay-locked.h
@@ -164,7 +164,7 @@ static __inline__ void ltt_check_deliver
                 */
                ltt_set_noref_flag(rchan, buf, idx);
 #ifdef CONFIG_LTT_VMCORE
-               ltt_buf->commit_seq[subbuf_idx] = commit_count;
+               ltt_buf->commit_seq[idx] = commit_count;
 #endif
                ltt_buf->wakeup_readers = 1;
        }

For your information LTTng configuration. dotconfig


CONFIG_LTT=y
CONFIG_LTT_FILTER=m
CONFIG_HAVE_LTT_DUMP_TABLES=y
CONFIG_LTT_RELAY_ALLOC=y
# CONFIG_LTT_RELAY_LOCKLESS is not set
# CONFIG_LTT_RELAY_IRQOFF is not set
CONFIG_LTT_RELAY_LOCKED=y
CONFIG_LTT_SERIALIZE=y
CONFIG_LTT_FAST_SERIALIZE=y
CONFIG_LTT_TRACEPROBES=m
CONFIG_LTT_TRACE_CONTROL=y
CONFIG_LTT_TRACER=y
CONFIG_LTT_ALIGNMENT=y
CONFIG_LTT_CHECK_ARCH_EFFICIENT_UNALIGNED_ACCESS=y
# CONFIG_LTT_DEBUG_EVENT_SIZE is not set
CONFIG_LTT_USERSPACE_EVENT=m
CONFIG_LTT_VMCORE=y
CONFIG_LTT_STATEDUMP=m
CONFIG_LTT_KPROBES=m

Please review the patch and provide your comments.

Kernel: 2.6.29-RT
Lttng: 0.158
ARCH: ARM

Best regards
Naresh Kamboju
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