From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH 1/1] stress-ng: Depend on kernel headers >= 3.3
Date: Fri, 11 Sep 2015 19:59:28 +0200 [thread overview]
Message-ID: <20150911195928.51c339dc@free-electrons.com> (raw)
In-Reply-To: <1441988351-9923-1-git-send-email-corjon.j@ecagroup.com>
Julien,
On Fri, 11 Sep 2015 18:19:11 +0200, Julien Corjon wrote:
> perf.c need PERF_COUNT_HW_REF_CPU_CYCLES instruction which is available
> only since 3.3 kernel version
>
> Signed-off-by: Julien Corjon <corjon.j@ecagroup.com>
> ---
> package/stress-ng/Config.in | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/package/stress-ng/Config.in b/package/stress-ng/Config.in
> index cdf9984..1e475b1 100644
> --- a/package/stress-ng/Config.in
> +++ b/package/stress-ng/Config.in
> @@ -4,8 +4,8 @@ config BR2_PACKAGE_STRESS_NG
> # disabled on musl: stress-malloc.c needs mallopt() and M_MMAP_THRESHOLD
> # disabled on uClibc: stress-aio.c needs aio.h
> depends on BR2_TOOLCHAIN_USES_GLIBC
> - # perf.c needs PERF_COUNT_HW_STALLED_CYCLES_FRONTEND
> - depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
> + # perf.c needs PERF_COUNT_HW_REF_CPU_CYCLES
> + depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
This seems wrong, because stress-ng.h has the definitions for all the
PERF_COUNT_* values:
#if defined(__linux__) && defined(__NR_perf_event_open)
#define STRESS_PERF_STATS (1)
#define STRESS_PERF_INVALID (~0ULL)
enum {
STRESS_PERF_HW_CPU_CYCLES = 0,
STRESS_PERF_HW_INSTRUCTIONS,
STRESS_PERF_HW_CACHE_REFERENCES,
STRESS_PERF_HW_CACHE_MISSES,
STRESS_PERF_HW_BRANCH_INSTRUCTIONS,
STRESS_PERF_HW_BRANCH_MISSES,
STRESS_PERF_HW_BUS_CYCLES,
STRESS_PERF_HW_REF_CPU_CYCLES,
STRESS_PERF_HW_STALLED_CYCLES_FRONTEND,
STRESS_PERF_HW_STALLED_CYCLES_BACKEND,
STRESS_PERF_SW_PAGE_FAULTS_MIN,
STRESS_PERF_SW_PAGE_FAULTS_MAJ,
STRESS_PERF_SW_CONTEXT_SWITCHES,
STRESS_PERF_SW_CPU_MIGRATIONS,
STRESS_PERF_SW_ALIGNMENT_FAULTS,
Can you figure out why it doesn't get used?
Thanks,
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next prev parent reply other threads:[~2015-09-11 17:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-11 16:19 [Buildroot] [PATCH 1/1] stress-ng: Depend on kernel headers >= 3.3 Julien Corjon
2015-09-11 17:59 ` Thomas Petazzoni [this message]
2015-09-12 10:26 ` Romain Naour
2015-09-13 14:27 ` Romain Naour
2015-09-12 10:19 ` Vicente Olivert Riera
2015-09-14 7:43 ` [Buildroot] [PATCH v2] " Julien Corjon
2015-09-14 8:59 ` Vicente Olivert Riera
2015-09-14 12:36 ` Peter Korsgaard
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