Commit-ID: 2a08c3ec4f7d6058a450d2d4bc6e366955872707 Gitweb: http://git.kernel.org/tip/2a08c3ec4f7d6058a450d2d4bc6e366955872707 Author: Jiri Olsa <[email protected]> AuthorDate: Wed, 17 Jul 2013 19:49:47 +0200 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Wed, 17 Jul 2013 17:04:00 -0300
perf header: Recognize version number for perf data file Keep the recognized data file version within 'struct perf_header'. Signed-off-by: Jiri Olsa <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Corey Ashford <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/header.c | 2 ++ tools/perf/util/header.h | 16 +++++++++++----- 2 files changed, 13 insertions(+), 5 deletions(-) diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index eefb052..f558f83 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2480,6 +2480,7 @@ static int check_magic_endian(u64 magic, uint64_t hdr_sz, /* check for legacy format */ ret = memcmp(&magic, __perf_magic1, sizeof(magic)); if (ret == 0) { + ph->version = PERF_HEADER_VERSION_1; pr_debug("legacy perf.data format\n"); if (is_pipe) return try_all_pipe_abis(hdr_sz, ph); @@ -2501,6 +2502,7 @@ static int check_magic_endian(u64 magic, uint64_t hdr_sz, return -1; ph->needs_swap = true; + ph->version = PERF_HEADER_VERSION_2; return 0; } diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h index e6387dc..307c9ae 100644 --- a/tools/perf/util/header.h +++ b/tools/perf/util/header.h @@ -34,6 +34,11 @@ enum { HEADER_FEAT_BITS = 256, }; +enum perf_header_version { + PERF_HEADER_VERSION_1, + PERF_HEADER_VERSION_2, +}; + struct perf_file_section { u64 offset; u64 size; @@ -85,12 +90,13 @@ struct perf_session_env { }; struct perf_header { - bool needs_swap; - u64 data_offset; - u64 data_size; - u64 feat_offset; + enum perf_header_version version; + bool needs_swap; + u64 data_offset; + u64 data_size; + u64 feat_offset; DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); - struct perf_session_env env; + struct perf_session_env env; }; struct perf_evlist; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
