c9938a9dac
We have custom stack expansion checks that it turns out are extremely badly tested and contain bugs, surprise. So add some tests that exercise the code and capture the current boundary conditions. The signal test currently fails on 64-bit kernels because the 2048 byte allowance for the signal frame is too small, we will fix that in a subsequent patch. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724092528.1578671-1-mpe@ellerman.id.au
42 lines
961 B
C
42 lines
961 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright 2014, Michael Ellerman, IBM Corp.
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*/
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#ifndef __SELFTESTS_POWERPC_PMU_LIB_H
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#define __SELFTESTS_POWERPC_PMU_LIB_H
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <unistd.h>
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union pipe {
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struct {
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int read_fd;
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int write_fd;
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};
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int fds[2];
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};
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extern int bind_to_cpu(int cpu);
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extern int kill_child_and_wait(pid_t child_pid);
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extern int wait_for_child(pid_t child_pid);
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extern int sync_with_child(union pipe read_pipe, union pipe write_pipe);
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extern int wait_for_parent(union pipe read_pipe);
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extern int notify_parent(union pipe write_pipe);
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extern int notify_parent_of_error(union pipe write_pipe);
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extern pid_t eat_cpu(int (test_function)(void));
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extern bool require_paranoia_below(int level);
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struct addr_range {
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uint64_t first, last;
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};
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extern struct addr_range libc, vdso;
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int parse_proc_maps(void);
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#endif /* __SELFTESTS_POWERPC_PMU_LIB_H */
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