[Bug nptl/19313] New: Wrong __cpu_mask for x32

["hjl.tools at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=19313

            Bug ID: 19313
           Summary: Wrong __cpu_mask for x32
           Product: glibc
           Version: 2.23
            Status: NEW
          Severity: normal
          Priority: P2
         Component: nptl
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

Since x86-64 and x32 use the same set of sched_XXX system call interface:

[hjl@gnu-6 linux-stable]$ grep sched_ arch/x86/entry/syscalls/syscall_64.tbl 
24      common  sched_yield             sys_sched_yield
142     common  sched_setparam          sys_sched_setparam
143     common  sched_getparam          sys_sched_getparam
144     common  sched_setscheduler      sys_sched_setscheduler
145     common  sched_getscheduler      sys_sched_getscheduler
146     common  sched_get_priority_max  sys_sched_get_priority_max
147     common  sched_get_priority_min  sys_sched_get_priority_min
148     common  sched_rr_get_interval   sys_sched_rr_get_interval
203     common  sched_setaffinity       sys_sched_setaffinity
204     common  sched_getaffinity       sys_sched_getaffinity
314     common  sched_setattr           sys_sched_setattr
315     common  sched_getattr           sys_sched_getattr
[hjl@gnu-6 linux-stable]$ 

__cpu_mask should be __syscall_ulong_t for x86-64 and x32.  Using

typedef unsigned long int __cpu_mask;

leads to

FAIL: nptl/tst-thread-affinity-pthread
FAIL: nptl/tst-thread-affinity-pthread2
FAIL: nptl/tst-thread-affinity-sched
FAIL: posix/tst-affinity
FAIL: posix/tst-affinity-pid

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