Roderick Colenbrander : ntdll: Fix parsing thread_siblings bitmaps on high core count systems.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b9af36933fdf47cbbe139626e98750da72142dce
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=b9af36933fdf47cbbe139626e...

Author: Roderick Colenbrander 
Date:   Sun Dec  2 22:53:16 2018 -0800

ntdll: Fix parsing thread_siblings bitmaps on high core count systems.

Linux compiled for a high number of CPU cores, the bitmap is broken
into sections of 32-bit by commas. Handle parsing this.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=45453
Signed-off-by: Roderick Colenbrander 
Signed-off-by: Alexandre Julliard

---

dlls/ntdll/nt.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/dlls/ntdll/nt.c b/dlls/ntdll/nt.c
index 0e11e0e..db51a98 100644
--- a/dlls/ntdll/nt.c
+++ b/dlls/ntdll/nt.c
@@ -1704,13 +1704,8 @@ static NTSTATUS create_logical_proc_info(SYSTEM_LOGICAL_PROCESSOR_INFORMATION **

/* Mask of logical threads sharing same physical core in kernel core numbering. */
             sprintf(name, core_info, i, "thread_siblings");
-            f = fopen(name, "r");
-            if(f)
-            {
-                fscanf(f, "%lx", &thread_mask);
-                fclose(f);
-            }
-            else thread_mask = 1<<i;
+            if(!sysfs_parse_bitmap(name, &thread_mask))
+                thread_mask = 1<<i;
             if(!logical_proc_info_add_by_id(data, dataex, &len, max_len, RelationProcessorCore, phys_core, thread_mask))
             {
                 fclose(fcpu_list);