[PATCH] Allow tests/test-nonblocking-pipe.sh test to pass on PowerPC.

[Prerna Saxena]

From: Prerna Saxena <address@hidden>
Date: Mon, 12 Dec 2011 16:00:04 +0530
Subject: [PATCH] Allow tests/test-nonblocking-pipe.sh test to pass on
 PowerPC.

On PowerPC, pipe_max_size is 1048576 bytes.
At present, tests/test-nonblocking-pipe fails for a blocking write and
non-blocking read case. This is because the default data_block_size for
generic linux host is rather small and can be easily accommodated in
a single write operation.(The blocking write can empty all its data in
the pipe in one go.)
This fix adjusts the value of PIPE_DATA_BLOCK_SIZE to 1100000 (ie,
greater than pipe_max_size) for powerpc kernel so that test
case 2 (blocking pipe write, non-blocking read) passes on ppc64.

Signed-off-by: Prerna Saxena <address@hidden>
---
 tests/test-nonblocking-pipe.h |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/tests/test-nonblocking-pipe.h b/tests/test-nonblocking-pipe.h
index a7be063..187dbe3 100644
--- a/tests/test-nonblocking-pipe.h
+++ b/tests/test-nonblocking-pipe.h
@@ -23,6 +23,7 @@
      Linux                           >= 63489
      Linux/SPARC                     >= 126977
      Linux/IA-64, Linux/MIPS         >= 253953
+     Linux/PPC64                     >= 1048576
      FreeBSD, OpenBSD, MacOS X       >= 65537
      AIX                             >= 32769
      HP-UX                           >= 8193
@@ -37,6 +38,8 @@
 # define PIPE_DATA_BLOCK_SIZE 270000
 #elif defined __linux__ && defined __sparc__
 # define PIPE_DATA_BLOCK_SIZE 140000
+#elif defined __linux__ && defined __powerpc__
+# define PIPE_DATA_BLOCK_SIZE 1100000
 #else
 # define PIPE_DATA_BLOCK_SIZE 70000
 #endif
-- 
1.7.7



-- 
Prerna Saxena

Linux Technology Centre,
IBM Systems and Technology Lab,
Bangalore, India