mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 08:46:43 +07:00
e477f3f01a
perf tools copy VDSO out of memory. However, on 64-bit machines there may be 32-bit compatibility VDOs also. To copy those requires separate 32-bit executables. This patch adds to the build additional programs perf-read-vdso32 and perf-read-vdsox32 for 32-bit and x32 respectively. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com>, Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1414061124-26830-15-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
35 lines
510 B
C
35 lines
510 B
C
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#define VDSO__MAP_NAME "[vdso]"
|
|
|
|
/*
|
|
* Include definition of find_vdso_map() also used in util/vdso.c for
|
|
* building perf.
|
|
*/
|
|
#include "util/find-vdso-map.c"
|
|
|
|
int main(void)
|
|
{
|
|
void *start, *end;
|
|
size_t size, written;
|
|
|
|
if (find_vdso_map(&start, &end))
|
|
return 1;
|
|
|
|
size = end - start;
|
|
|
|
while (size) {
|
|
written = fwrite(start, 1, size, stdout);
|
|
if (!written)
|
|
return 1;
|
|
start += written;
|
|
size -= written;
|
|
}
|
|
|
|
if (fflush(stdout))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|