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From:   "Denys Zagorui -X (dzagorui - GLOBALLOGIC INC at Cisco)" 
        <dzagorui@cisco.com>
To:     Jiri Olsa <jolsa@redhat.com>
CC:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "peterz@infradead.org" <peterz@infradead.org>,
        "mingo@redhat.com" <mingo@redhat.com>,
        "acme@kernel.org" <acme@kernel.org>,
        "mark.rutland@arm.com" <mark.rutland@arm.com>,
        "alexander.shishkin@linux.intel.com" 
        <alexander.shishkin@linux.intel.com>,
        "namhyung@kernel.org" <namhyung@kernel.org>
Subject: Re: [PATCH v5 1/3] perf report: compile tips.txt in perf binary
Thread-Topic: [PATCH v5 1/3] perf report: compile tips.txt in perf binary
Thread-Index: AQHXTLJgj2yFOlZPtE2LzPWz23wBjKrtu4UW
Date:   Fri, 21 May 2021 10:24:28 +0000
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> that still does not solve that we set MAX_TIPS and have=0A=
> no way of checking that's still valid=0A=
> =0A=
> how about something like below (completely untested):=0A=
=0A=
Yes, looks good, i've tested it.=0A=
> =0A=
> =0A=
> static const char *perf_tip(void)=0A=
> {=0A=
>       char *start =3D _binary_Documentation_tips_txt_start;=0A=
>       char *tok, *tmp, *prev;=0A=
>       int pick, size;=0A=
>=0A=
>       size =3D _binary_Documentation_tips_txt_end - start;=0A=
>       pick =3D random() % size;=0A=
>=0A=
>       _binary_Documentation_tips_txt_start[size - 1] =3D 0;=0A=
>=0A=
>       for (tok =3D strtok_r(start, "\n", &tmp); tok;=0A=
>            tok =3D strtok_r(NULL, "\n", &tmp)) {=0A=
>               if (pick < (tok - start))=0A=
>                       return prev;=0A=
>               prev =3D tok;=0A=
>       }=0A=
>=0A=
>       return prev;=0A=
> }=0A=
> =0A=
> this way you wouldn't need array with MAX_TIPS defined=0A=