From: Josh Triplett <josh@joshtriplett.org>
To: Len Brown <len.brown@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH] turbostat: Increase output buffer size to accommodate C8-C10
Date: Wed, 12 Jun 2013 17:26:37 -0700 [thread overview]
Message-ID: <20130613002635.GA14920@jtriplet-mobl1> (raw)
On platforms with C8-C10 support, the additional C-states cause
turbostat to overrun its output buffer of 128 bytes per CPU. Increase
this to 256 bytes per CPU.
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
---
As a bugfix, this should go into 3.10; however, since the C8-C10 support
didn't go in until after 3.9, this need not go into any stable kernel.
tools/power/x86/turbostat/turbostat.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 9e9d348..fe70207 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -2191,7 +2191,7 @@ int initialize_counters(int cpu_id)
void allocate_output_buffer()
{
- output_buffer = calloc(1, (1 + topo.num_cpus) * 128);
+ output_buffer = calloc(1, (1 + topo.num_cpus) * 256);
outp = output_buffer;
if (outp == NULL) {
perror("calloc");
--
1.8.3.1
reply other threads:[~2013-06-13 0:27 UTC|newest]
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