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Date: Thu, 6 Jun 2019 10:38:38 -0300
From: Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To: Leo Yan <leo.yan@...aro.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Martin KaFai Lau <kafai@...com>,
Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
Adrian Hunter <adrian.hunter@...el.com>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Mike Leach <mike.leach@...aro.org>,
Suzuki K Poulose <suzuki.poulose@....com>,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
bpf@...r.kernel.org
Subject: Re: [PATCH v2 3/4] perf augmented_raw_syscalls: Support arm64 raw
syscalls
Em Thu, Jun 06, 2019 at 05:48:44PM +0800, Leo Yan escreveu:
> This patch adds support for arm64 raw syscall numbers so that we can use
> it on arm64 platform.
>
> After applied this patch, we need to specify macro -D__aarch64__ or
> -D__x86_64__ in compilation option so Clang can use the corresponding
> syscall numbers for arm64 or x86_64 respectively, other architectures
> will report failure when compilation.
So, please check what I have in my perf/core branch, I've completely
removed arch specific stuff from augmented_raw_syscalls.c.
What is done now is use a map to specify what to copy, that same map
that is used to state which syscalls should be traced.
It uses that tools/perf/arch/arm64/entry/syscalls/mksyscalltbl to figure
out the mapping of syscall names to ids, just like is done for x86_64
and other arches, falling back to audit-libs when that syscalltbl thing
is not present.
- Arnaldo
> Signed-off-by: Leo Yan <leo.yan@...aro.org>
> ---
> .../examples/bpf/augmented_raw_syscalls.c | 81 +++++++++++++++++++
> 1 file changed, 81 insertions(+)
>
> diff --git a/tools/perf/examples/bpf/augmented_raw_syscalls.c b/tools/perf/examples/bpf/augmented_raw_syscalls.c
> index 5c4a4e715ae6..a3701a4daf2e 100644
> --- a/tools/perf/examples/bpf/augmented_raw_syscalls.c
> +++ b/tools/perf/examples/bpf/augmented_raw_syscalls.c
> @@ -45,6 +45,83 @@ struct augmented_filename {
> char value[PATH_MAX];
> };
>
> +#if defined(__aarch64__)
> +
> +/* syscalls where the first arg is a string */
> +#define SYS_OPEN 1024
> +#define SYS_STAT 1038
> +#define SYS_LSTAT 1039
> +#define SYS_ACCESS 1033
> +#define SYS_EXECVE 221
> +#define SYS_TRUNCATE 45
> +#define SYS_CHDIR 49
> +#define SYS_RENAME 1034
> +#define SYS_MKDIR 1030
> +#define SYS_RMDIR 1031
> +#define SYS_CREAT 1064
> +#define SYS_LINK 1025
> +#define SYS_UNLINK 1026
> +#define SYS_SYMLINK 1036
> +#define SYS_READLINK 1035
> +#define SYS_CHMOD 1028
> +#define SYS_CHOWN 1029
> +#define SYS_LCHOWN 1032
> +#define SYS_MKNOD 1027
> +#define SYS_STATFS 1056
> +#define SYS_PIVOT_ROOT 41
> +#define SYS_CHROOT 51
> +#define SYS_ACCT 89
> +#define SYS_SWAPON 224
> +#define SYS_SWAPOFF 225
> +#define SYS_DELETE_MODULE 106
> +#define SYS_SETXATTR 5
> +#define SYS_LSETXATTR 6
> +#define SYS_GETXATTR 8
> +#define SYS_LGETXATTR 9
> +#define SYS_LISTXATTR 11
> +#define SYS_LLISTXATTR 12
> +#define SYS_REMOVEXATTR 14
> +#define SYS_LREMOVEXATTR 15
> +#define SYS_MQ_OPEN 180
> +#define SYS_MQ_UNLINK 181
> +#define SYS_ADD_KEY 217
> +#define SYS_REQUEST_KEY 218
> +#define SYS_SYMLINKAT 36
> +#define SYS_MEMFD_CREATE 279
> +
> +/* syscalls where the second arg is a string */
> +#define SYS_PWRITE64 68
> +#define SYS_RENAME 1034
> +#define SYS_QUOTACTL 60
> +#define SYS_FSETXATTR 7
> +#define SYS_FGETXATTR 10
> +#define SYS_FREMOVEXATTR 16
> +#define SYS_MQ_TIMEDSEND 182
> +#define SYS_REQUEST_KEY 218
> +#define SYS_INOTIFY_ADD_WATCH 27
> +#define SYS_OPENAT 56
> +#define SYS_MKDIRAT 34
> +#define SYS_MKNODAT 33
> +#define SYS_FCHOWNAT 54
> +#define SYS_FUTIMESAT 1066
> +#define SYS_NEWFSTATAT 1054
> +#define SYS_UNLINKAT 35
> +#define SYS_RENAMEAT 38
> +#define SYS_LINKAT 37
> +#define SYS_READLINKAT 78
> +#define SYS_FCHMODAT 53
> +#define SYS_FACCESSAT 48
> +#define SYS_UTIMENSAT 88
> +#define SYS_NAME_TO_HANDLE_AT 264
> +#define SYS_FINIT_MODULE 273
> +#define SYS_RENAMEAT2 276
> +#define SYS_EXECVEAT 281
> +#define SYS_STATX 291
> +#define SYS_MOVE_MOUNT 429
> +#define SYS_FSPICK 433
> +
> +#elif defined(__x86_64__)
> +
> /* syscalls where the first arg is a string */
> #define SYS_OPEN 2
> #define SYS_STAT 4
> @@ -119,6 +196,10 @@ struct augmented_filename {
> #define SYS_MOVE_MOUNT 429
> #define SYS_FSPICK 433
>
> +#else
> +#error "unsupported architecture"
> +#endif
> +
> pid_filter(pids_filtered);
>
> struct augmented_args_filename {
> --
> 2.17.1
--
- Arnaldo
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