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| author |   Leo Yan <leo.yan@linaro.org> | 2021-08-09 19:27:25 +0800 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-08-09 17:11:18 -0300 |
| commit | 7c0223e1ddd7d1c16b76adf8c9c352771856c632 (patch) | |
| tree | c619a4ac8582c12432df5c65937a2badde57da97 /tools/perf/util/env.h | |
| parent | tools: Remove feature-sync-compare-and-swap feature detection (diff) | |
| download | linux-dev-7c0223e1ddd7d1c16b76adf8c9c352771856c632.tar.xz linux-dev-7c0223e1ddd7d1c16b76adf8c9c352771856c632.zip | |
perf env: Track kernel 64-bit mode in environment
It's useful to know that the kernel is running in 32-bit or 64-bit mode.
E.g. We can decide if perf tool is running in compat mode based on the
info.
This patch adds an item "kernel_is_64_bit" into session's environment
structure perf_env, its value is initialized based on the architecture
string.
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Li Huafei <lihuafei1@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: russell king <linux@armlinux.org.uk>
Link: http://lore.kernel.org/lkml/20210809112727.596876-2-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/env.h')
| -rw-r--r-- | tools/perf/util/env.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h index 6824a7423a2d..1f5175820a05 100644 --- a/tools/perf/util/env.h +++ b/tools/perf/util/env.h @@ -61,6 +61,7 @@ struct perf_env { unsigned long long total_mem; unsigned int msr_pmu_type; unsigned int max_branches; + int kernel_is_64_bit; int nr_cmdline; int nr_sibling_cores; @@ -143,6 +144,8 @@ extern struct perf_env perf_env; void perf_env__exit(struct perf_env *env); +int perf_env__kernel_is_64_bit(struct perf_env *env); + int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[]); int perf_env__read_cpuid(struct perf_env *env); |