109 lines
3.5 KiB
C
109 lines
3.5 KiB
C
/*
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* Copyright (c) 2014, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include "memory_prof.h"
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#include "memory_prof_util.h"
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#include "memory_prof_module.h"
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#include "alloc_profiles.h"
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struct alloc_pages_op {
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unsigned int order;
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uint64_t gfp;
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char gfp_string[MAX_FLAGS_STRING_LEN];
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};
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static int memory_prof_fd;
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static int op_simple_alloc_global_setup(
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struct alloc_profile_entry entries[] __unused)
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{
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memory_prof_fd = open(MEMORY_PROF_DEV, O_RDONLY);
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if (memory_prof_fd < 0)
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err(1, "couldn't open " MEMORY_PROF_DEV);
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return 0;
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}
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static void op_simple_alloc_global_teardown(void)
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{
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if (ioctl(memory_prof_fd, MEMORY_PROF_IOC_CLEANUP_ALLOC_PAGES)) {
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warn("Couldn't do MEMORY_PROF_IOC_CLEANUP_ALLOC_PAGES");
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}
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close(memory_prof_fd);
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}
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enum alloc_pages_op_line_idx {
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LINE_IDX_ORDER = 1,
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LINE_IDX_GFP,
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};
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static int op_alloc_pages_parse(struct alloc_profile_entry *entry,
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struct line_info *li)
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{
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struct alloc_pages_op *op = (struct alloc_pages_op *) entry->priv;
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STRTOL(op->order, li->words[LINE_IDX_ORDER], 0);
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op->gfp = parse_flags(li->words[LINE_IDX_GFP]);
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STRNCPY_SAFE(op->gfp_string, li->words[LINE_IDX_GFP],
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MAX_FLAGS_STRING_LEN);
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return 0;
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}
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static int op_alloc_pages_run(struct alloc_profile_entry *entry)
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{
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struct alloc_pages_op *op = (struct alloc_pages_op *) entry->priv;
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struct mp_alloc_pages_args args = {
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.order = op->order,
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.gfp = op->gfp,
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};
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if (ioctl(memory_prof_fd, MEMORY_PROF_IOC_TEST_ALLOC_PAGES, &args)) {
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warn("Couldn't do MEMORY_PROF_IOC_TEST_ALLOC_PAGES");
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return 1;
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}
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printf(ST_PREFIX_DATA_ROW " alloc_pages took %llu ms order:%d gfp:%s\n",
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args.time_elapsed_us / 1000, op->order, op->gfp_string);
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return 0;
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}
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static struct alloc_profile_ops alloc_pages_ops = {
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.parse = op_alloc_pages_parse,
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.run = op_alloc_pages_run,
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.global_setup = op_simple_alloc_global_setup,
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.global_teardown = op_simple_alloc_global_teardown,
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};
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ALLOC_PROFILE_OP_SIZED(&alloc_pages_ops, alloc_pages,
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sizeof(struct alloc_pages_op));
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