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s390/time: remove ETR support

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The External-Time-Reference (ETR) clock synchronization interface has
been superseded by Server-Time-Protocol (STP). Remove the outdated
ETR interface.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2016-05-31 15:06:51 +02:00
parent 936cc855ff
commit fd5ada0403
5 changed files with 55 additions and 1229 deletions
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13
arch/s390/kernel/nmi.c
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@@ -16,7 +16,7 @@
#include <linux/module.h>
#include <asm/lowcore.h>
#include <asm/smp.h>
#include <asm/etr.h>
#include <asm/stp.h>
#include <asm/cputime.h>
#include <asm/nmi.h>
#include <asm/crw.h>
@@ -27,7 +27,6 @@ struct mcck_struct {
unsigned int kill_task : 1;
unsigned int channel_report : 1;
unsigned int warning : 1;
unsigned int etr_queue : 1;
unsigned int stp_queue : 1;
unsigned long mcck_code;
};
@@ -82,8 +81,6 @@ void s390_handle_mcck(void)
if (xchg(&mchchk_wng_posted, 1) == 0)
kill_cad_pid(SIGPWR, 1);
}
if (mcck.etr_queue)
etr_queue_work();
if (mcck.stp_queue)
stp_queue_work();
if (mcck.kill_task) {
@@ -241,8 +238,6 @@ static int notrace s390_validate_registers(union mci mci)
#define ED_STP_ISLAND 6 /* External damage STP island check */
#define ED_STP_SYNC 7 /* External damage STP sync check */
#define ED_ETR_SYNC 12 /* External damage ETR sync check */
#define ED_ETR_SWITCH 13 /* External damage ETR switch to local */
/*
* machine check handler.
@@ -325,15 +320,11 @@ void notrace s390_do_machine_check(struct pt_regs *regs)
}
if (mci.ed && mci.ec) {
/* External damage */
if (S390_lowcore.external_damage_code & (1U << ED_ETR_SYNC))
mcck->etr_queue |= etr_sync_check();
if (S390_lowcore.external_damage_code & (1U << ED_ETR_SWITCH))
mcck->etr_queue |= etr_switch_to_local();
if (S390_lowcore.external_damage_code & (1U << ED_STP_SYNC))
mcck->stp_queue |= stp_sync_check();
if (S390_lowcore.external_damage_code & (1U << ED_STP_ISLAND))
mcck->stp_queue |= stp_island_check();
if (mcck->etr_queue || mcck->stp_queue)
if (mcck->stp_queue)
set_cpu_flag(CIF_MCCK_PENDING);
}
if (mci.se)