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powerpc/pseries: Generalize hcall_vphn()

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H_HOME_NODE_ASSOCIATIVITY hcall can take two different flags and return
different associativity information in each case. Generalize the
existing hcall_vphn() function to take flags as an argument and to
return the result. Update the only existing user to pass the proper
arguments.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Naveen N. Rao
2019-07-03 22:33:58 +05:30
committed by Michael Ellerman
parent 06220d78f2
commit ef34e0efa2
2 changed files with 21 additions and 14 deletions
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27
arch/powerpc/mm/numa.c
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@@ -1087,6 +1087,17 @@ static void reset_topology_timer(void);
static int topology_timer_secs = 1;
static int topology_inited;
static long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity)
{
long rc;
long retbuf[PLPAR_HCALL9_BUFSIZE] = {0};
rc = plpar_hcall9(H_HOME_NODE_ASSOCIATIVITY, retbuf, flags, cpu);
vphn_unpack_associativity(retbuf, associativity);
return rc;
}
/*
* Change polling interval for associativity changes.
*/
@@ -1165,25 +1176,13 @@ static int update_cpu_associativity_changes_mask(void)
* Retrieve the new associativity information for a virtual processor's
* home node.
*/
static long hcall_vphn(unsigned long cpu, __be32 *associativity)
{
long rc;
long retbuf[PLPAR_HCALL9_BUFSIZE] = {0};
u64 flags = 1;
int hwcpu = get_hard_smp_processor_id(cpu);
rc = plpar_hcall9(H_HOME_NODE_ASSOCIATIVITY, retbuf, flags, hwcpu);
vphn_unpack_associativity(retbuf, associativity);
return rc;
}
static long vphn_get_associativity(unsigned long cpu,
__be32 *associativity)
{
long rc;
rc = hcall_vphn(cpu, associativity);
rc = hcall_vphn(get_hard_smp_processor_id(cpu),
VPHN_FLAG_VCPU, associativity);
switch (rc) {
case H_FUNCTION: