Commit 42e6a0f6 authored by Thomas Richter's avatar Thomas Richter Committed by Heiko Carstens
Browse files

s390/pai_crypto: Add common pai_del() function 



To support one common PAI PMU device driver which handles
both PMUs pai_crypto and pai_ext, use a common naming scheme
for structures and variables suitable for both device drivers.
Add a common usable function pai_stop() for the event on a CPU.

Signed-off-by: default avatarThomas Richter <tmricht@linux.ibm.com>
Reviewed-by: default avatarJan Polensky <japo@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent ac03223f

arch/s390/kernel/perf_pai_crypto.c

+8 −2
Original line number Diff line number Diff line
@@ -460,18 +460,24 @@ static void paicrypt_stop(struct perf_event *event, int flags) 
	pai_stop(event, flags);

}



static void paicrypt_del(struct perf_event *event, int flags)

static void pai_del(struct perf_event *event, int flags)

{

	struct pai_mapptr *mp = this_cpu_ptr(pai_root.mapptr);

	struct pai_map *cpump = mp->mapptr;

	int idx = PAI_PMU_IDX(event);



	paicrypt_stop(event, PERF_EF_UPDATE);

	pai_pmu[idx].pmu->stop(event, PERF_EF_UPDATE);

	if (--cpump->active_events == 0) {

		local_ctl_clear_bit(0, CR0_CRYPTOGRAPHY_COUNTER_BIT);

		WRITE_ONCE(get_lowcore()->ccd, 0);

	}

}



static void paicrypt_del(struct perf_event *event, int flags)

{

	pai_del(event, flags);

}



/* Create raw data and save it in buffer. Calculate the delta for each

 * counter between this invocation and the last invocation.

 * Returns number of bytes copied.