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From: Ken Brown <kbrown@sourceware.org>
To: cygwin-cvs@sourceware.org
Subject: [newlib-cygwin] fhandler_proc.cc(format_proc_cpuinfo): fix AMD physical cores count
Date: Mon, 07 Oct 2019 19:55:00 -0000	[thread overview]
Message-ID: <20191007195520.109827.qmail@sourceware.org> (raw)

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=7a0496f78f60d43cf9545a794cbf8c00d7bb8e02

commit 7a0496f78f60d43cf9545a794cbf8c00d7bb8e02
Author: Brian Inglis <Brian.Inglis@SystematicSW.ab.ca>
Date:   Mon Oct 7 10:23:00 2019 -0600

    fhandler_proc.cc(format_proc_cpuinfo): fix AMD physical cores count
    
    Fix AMD physical cores count documented as core_info low byte + 1.

Diff:
---
 winsup/cygwin/fhandler_proc.cc | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
index 78518ba..c94cde9 100644
--- a/winsup/cygwin/fhandler_proc.cc
+++ b/winsup/cygwin/fhandler_proc.cc
@@ -885,11 +885,10 @@ format_proc_cpuinfo (void *, char *&destbuf)
 
 		  cpuid (&unused, &unused, &core_info, &unused, 0x80000008);
 		  cpuid (&unused, &cus, &unused, &unused, 0x8000001e);
-		  siblings = (core_info & 0xff) + 1;
+		  siblings = cpu_cores = (core_info & 0xff) + 1;
 		  logical_bits = (core_info >> 12) & 0xf;
 		  cus = ((cus >> 8) & 0x3) + 1;
 		  ht_bits = mask_bits (cus);
-		  cpu_cores = siblings >> ht_bits;
 		}
 	      else if (maxe >= 0x80000008)
 		{


                 reply	other threads:[~2019-10-07 19:55 UTC|newest]

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