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Tue, 21 May 2019 06:28:50 -0700 (PDT) From: Arnaldo Carvalho de Melo X-Google-Original-From: Arnaldo Carvalho de Melo Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id C6117404A1; Tue, 21 May 2019 10:28:38 -0300 (-03) Date: Tue, 21 May 2019 10:28:38 -0300 To: Vitaly Chikunov Cc: Peter Zijlstra , Ingo Molnar , linux-kernel@vger.kernel.org, Alexander Shishkin , Hendrik Brueckner , Jiri Olsa , Kim Phillips , Namhyung Kim , Ravi Bangoria Subject: Re: [PATCH] perf arm64: Fix mksyscalltbl when system kernel headers are ahead of the kernel Message-ID: <20190521132838.GB26253@kernel.org> References: <20190521030203.1447-1-vt@altlinux.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190521030203.1447-1-vt@altlinux.org> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.11.3 (2019-02-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Tue, May 21, 2019 at 06:02:03AM +0300, Vitaly Chikunov escreveu: > When a host system has kernel headers that are newer than a compiling > kernel, mksyscalltbl fails with errors such as: > > : In function 'main': > :271:44: error: '__NR_kexec_file_load' undeclared (first use in this function) > :271:44: note: each undeclared identifier is reported only once for each function it appears in > :272:46: error: '__NR_pidfd_send_signal' undeclared (first use in this function) > :273:43: error: '__NR_io_uring_setup' undeclared (first use in this function) > :274:43: error: '__NR_io_uring_enter' undeclared (first use in this function) > :275:46: error: '__NR_io_uring_register' undeclared (first use in this function) > tools/perf/arch/arm64/entry/syscalls//mksyscalltbl: line 48: /tmp/create-table-xvUQdD: Permission denied > > mksyscalltbl is compiled with default host includes, but run with It shouldn't :-\ So with this you're making it use the ones shipped in tools/include? Good, I'll test it, thanks! - Arnaldo > compiling kernel tree includes, causing some syscall numbers being > undeclared. > > Signed-off-by: Vitaly Chikunov > Cc: Alexander Shishkin > Cc: Arnaldo Carvalho de Melo > Cc: Hendrik Brueckner > Cc: Ingo Molnar > Cc: Jiri Olsa > Cc: Kim Phillips > Cc: Namhyung Kim > Cc: Peter Zijlstra > Cc: Ravi Bangoria > --- > tools/perf/arch/arm64/entry/syscalls/mksyscalltbl | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl b/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl > index c88fd32563eb..459469b7222c 100755 > --- a/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl > +++ b/tools/perf/arch/arm64/entry/syscalls/mksyscalltbl > @@ -56,7 +56,7 @@ create_table() > echo "};" > } > > -$gcc -E -dM -x c $input \ > +$gcc -E -dM -x c -I $incpath/include/uapi $input \ > |sed -ne 's/^#define __NR_//p' \ > |sort -t' ' -k2 -nu \ > |create_table > -- > 2.11.0 -- - Arnaldo