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011532379b
In preparation for checking that the vectors page on the ARM architecture, refactor the find_vdso_map() function to accept finding an arbitrary string and create a dedicated helper function for that under util/find-map.c and update the filename to find-map.c and all references to it: perf-read-vdso.c and util/vdso.c. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Chris Healy <cphealy@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: http://lkml.kernel.org/r/20181221034337.26663-2-f.fainelli@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
36 lines
547 B
C
36 lines
547 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <stdio.h>
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#include <string.h>
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#define VDSO__MAP_NAME "[vdso]"
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/*
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* Include definition of find_map() also used in util/vdso.c for
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* building perf.
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*/
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#include "util/find-map.c"
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int main(void)
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{
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void *start, *end;
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size_t size, written;
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if (find_map(&start, &end, VDSO__MAP_NAME))
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return 1;
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size = end - start;
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while (size) {
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written = fwrite(start, 1, size, stdout);
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if (!written)
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return 1;
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start += written;
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size -= written;
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}
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if (fflush(stdout))
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return 1;
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return 0;
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}
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