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perf script: Fix documented const'ness of perf_dlfilter_fns

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perf_dlfilter_fns must not be const, because it is not.

Declaring it const can result in it being mapped read-only, causing a
segfaullt when it is written. Update documentation accordingly.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Fixes: 8defa7147d5572 ("perf script Add API for filtering via dynamically loaded shared object")
Link: https //lore.kernel.org/r/20210811101036.17986-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2021-08-11 13:10:31 +03:00 • committed by Arnaldo Carvalho de Melo
parent c4ad8fabd0
commit 988db17932
1 changed files with 2 additions and 2 deletions
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4
tools/perf/Documentation/perf-dlfilter.txt
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@ -32,7 +32,7 @@ The API for filtering consists of the following:
----
#include <perf/perf_dlfilter.h>
const struct perf_dlfilter_fns perf_dlfilter_fns;
struct perf_dlfilter_fns perf_dlfilter_fns;
int start(void **data, void *ctx);
int stop(void *data, void *ctx);
@ -214,7 +214,7 @@ Filter out everything except branches from "foo" to "bar":
#include <perf/perf_dlfilter.h>
#include <string.h>
const struct perf_dlfilter_fns perf_dlfilter_fns;
struct perf_dlfilter_fns perf_dlfilter_fns;
int filter_event(void *data, const struct perf_dlfilter_sample *sample, void *ctx)
{