Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
104 lines
2.2 KiB
C
104 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* VPA support
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*/
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#include <errno.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include "../../util/evlist.h"
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#include "../../util/debug.h"
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#include "../../util/auxtrace.h"
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#include "../../util/powerpc-vpadtl.h"
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#include "../../util/record.h"
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#include <internal/lib.h> // page_size
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#define KiB(x) ((x) * 1024)
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static int
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powerpc_vpadtl_recording_options(struct auxtrace_record *ar __maybe_unused,
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struct evlist *evlist __maybe_unused,
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struct record_opts *opts)
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{
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opts->full_auxtrace = true;
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/*
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* Set auxtrace_mmap_pages to minimum
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* two pages
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*/
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if (!opts->auxtrace_mmap_pages) {
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opts->auxtrace_mmap_pages = KiB(128) / page_size;
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if (opts->mmap_pages == UINT_MAX)
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opts->mmap_pages = KiB(256) / page_size;
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}
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return 0;
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}
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static size_t powerpc_vpadtl_info_priv_size(struct auxtrace_record *itr __maybe_unused,
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struct evlist *evlist __maybe_unused)
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{
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return VPADTL_AUXTRACE_PRIV_SIZE;
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}
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static int
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powerpc_vpadtl_info_fill(struct auxtrace_record *itr __maybe_unused,
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struct perf_session *session __maybe_unused,
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struct perf_record_auxtrace_info *auxtrace_info,
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size_t priv_size __maybe_unused)
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{
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auxtrace_info->type = PERF_AUXTRACE_VPA_DTL;
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return 0;
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}
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static void powerpc_vpadtl_free(struct auxtrace_record *itr)
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{
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free(itr);
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}
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static u64 powerpc_vpadtl_reference(struct auxtrace_record *itr __maybe_unused)
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{
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return 0;
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}
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struct auxtrace_record *auxtrace_record__init(struct evlist *evlist,
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int *err)
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{
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struct auxtrace_record *aux;
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struct evsel *pos;
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int found = 0;
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evlist__for_each_entry(evlist, pos) {
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if (strstarts(pos->name, "vpa_dtl")) {
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found = 1;
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pos->needs_auxtrace_mmap = true;
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break;
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}
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}
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if (!found)
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return NULL;
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/*
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* To obtain the auxtrace buffer file descriptor, the auxtrace event
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* must come first.
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*/
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evlist__to_front(pos->evlist, pos);
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aux = zalloc(sizeof(*aux));
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if (aux == NULL) {
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pr_debug("aux record is NULL\n");
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*err = -ENOMEM;
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return NULL;
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}
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aux->recording_options = powerpc_vpadtl_recording_options;
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aux->info_priv_size = powerpc_vpadtl_info_priv_size;
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aux->info_fill = powerpc_vpadtl_info_fill;
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aux->free = powerpc_vpadtl_free;
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aux->reference = powerpc_vpadtl_reference;
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return aux;
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}
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