Revision 9aba0adae8c773ba0c0adc7c4d97768e044166cb authored by Ian Rogers on 11 November 2021, 00:21:09 UTC, committed by Arnaldo Carvalho de Melo on 13 November 2021, 21:11:50 UTC
Events like uncore_imc/cas_count_read/ on Skylake open multiple events
and then aggregate in the metric leader. To determine the average value
per event the number of these events is needed. Add a source_count
function that returns this value by counting the number of events with
the given metric leader. For most events the value is 1 but for
uncore_imc/cas_count_read/ it can yield values like 6.

Add a generic test, but manually tested with a test metric that uses
the function.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul A . Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Song Liu <song@kernel.org>
Cc: Wan Jiabing <wanjiabing@vivo.com>
Cc: Yury Norov <yury.norov@gmail.com>
Link: https://lore.kernel.org/r/20211111002109.194172-9-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 parent 1e7ab82
Raw File
compress.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Cryptographic API.
 *
 * Compression operations.
 *
 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
 */
#include <linux/crypto.h>
#include "internal.h"

int crypto_comp_compress(struct crypto_comp *comp,
			 const u8 *src, unsigned int slen,
			 u8 *dst, unsigned int *dlen)
{
	struct crypto_tfm *tfm = crypto_comp_tfm(comp);

	return tfm->__crt_alg->cra_compress.coa_compress(tfm, src, slen, dst,
	                                                 dlen);
}
EXPORT_SYMBOL_GPL(crypto_comp_compress);

int crypto_comp_decompress(struct crypto_comp *comp,
			   const u8 *src, unsigned int slen,
			   u8 *dst, unsigned int *dlen)
{
	struct crypto_tfm *tfm = crypto_comp_tfm(comp);

	return tfm->__crt_alg->cra_compress.coa_decompress(tfm, src, slen, dst,
	                                                   dlen);
}
EXPORT_SYMBOL_GPL(crypto_comp_decompress);
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