Commit-ID: f95d050cdc5d34f9a4417e06c392ccbf146037bb Gitweb: https://git.kernel.org/tip/f95d050cdc5d34f9a4417e06c392ccbf146037bb Author: Vitaly Chikunov <vt@xxxxxxxxxxxx> AuthorDate: Tue, 21 May 2019 06:02:03 +0300 Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> CommitDate: Tue, 28 May 2019 09:49:03 -0300 perf arm64: Fix mksyscalltbl when system kernel headers are ahead of the kernel When a host system has kernel headers that are newer than a compiling kernel, mksyscalltbl fails with errors such as: <stdin>: In function 'main': <stdin>:271:44: error: '__NR_kexec_file_load' undeclared (first use in this function) <stdin>:271:44: note: each undeclared identifier is reported only once for each function it appears in <stdin>:272:46: error: '__NR_pidfd_send_signal' undeclared (first use in this function) <stdin>:273:43: error: '__NR_io_uring_setup' undeclared (first use in this function) <stdin>:274:43: error: '__NR_io_uring_enter' undeclared (first use in this function) <stdin>: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 compiling kernel tree includes, causing some syscall numbers to being undeclared. Committer testing: Before this patch, in my cross build environment, no build problems, but these new syscalls were not in the syscalls.c generated from the unistd.h file, which is a bug, this patch fixes it: perfbuilder@6e20056ed532:/git/perf$ tail /tmp/build/perf/arch/arm64/include/generated/asm/syscalls.c [292] = "io_pgetevents", [293] = "rseq", [294] = "kexec_file_load", [424] = "pidfd_send_signal", [425] = "io_uring_setup", [426] = "io_uring_enter", [427] = "io_uring_register", [428] = "syscalls", }; perfbuilder@6e20056ed532:/git/perf$ strings /tmp/build/perf/perf | egrep '^(io_uring_|pidfd_|kexec_file)' kexec_file_load pidfd_send_signal io_uring_setup io_uring_enter io_uring_register perfbuilder@6e20056ed532:/git/perf$ $ Well, there is that last "syscalls" thing, but that looks like some other bug. Signed-off-by: Vitaly Chikunov <vt@xxxxxxxxxxxx> Tested-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Tested-by: Michael Petlan <mpetlan@xxxxxxxxxx> Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx> Cc: Hendrik Brueckner <brueckner@xxxxxxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Kim Phillips <kim.phillips@xxxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Ravi Bangoria <ravi.bangoria@xxxxxxxxxxxxxxxxxx> Link: http://lkml.kernel.org/r/20190521030203.1447-1-vt@xxxxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- 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
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