Em Mon, Apr 27, 2015 at 08:41:20PM +0200, Jiri Olsa escreveu: > On Mon, Apr 27, 2015 at 03:39:53PM -0300, Arnaldo Carvalho de Melo wrote: > > Em Mon, Apr 27, 2015 at 07:49:06PM +0200, Jiri Olsa escreveu: > > > On Mon, Apr 27, 2015 at 02:40:17PM -0300, Arnaldo Carvalho de Melo wrote: > > > > Em Mon, Apr 27, 2015 at 11:13:02AM -0600, David Ahern escreveu: > > > > > > > > > > I think the right thing to do is to remove JOBS completely. > > > > > > > > That is up for discussion, Ingo, Jiri, Namhyung, others? > > > > > > > > > Barring that use of getconf with a fallback to grepping /proc/cpuinfo. > > > > > > > > Ok, but no patch so far doing that, right? 8-) > > > > > > heh, I've got the idea that you're preparing something ;-) > > > > > > as for me I've got used to the automatic -jX being added, > > > so I'd prefer we fix that JOBS setup for arm > > > > > > I'll try to send something ;-) > > > > [acme@ssdandy linux]$ (getconf _NPROCESSORS_ONLN || egrep -c > > '^processor|^CPU' /proc/cpuinfo) 2>/dev/null > > 8 > > [acme@ssdandy linux]$ (not-found-getconf _NPROCESSORS_ONLN || egrep -c > > '^processor|^CPU' /proc/cpuinfo) 2>/dev/null > > 8 > > [acme@ssdandy linux]$ > > > > how about this one
I came up with this one, that doesn't introduces a new file: >From e8155c06652a05f2307d53823a7937be5dad4e32 Mon Sep 17 00:00:00 2001 From: Will Deacon <will.dea...@arm.com> Date: Thu, 23 Apr 2015 15:00:16 +0100 Subject: [PATCH] tools perf: Use getconf to determine number of online CPUs Parsing /proc/cpuinfo is a fiddly, arch-dependent business anda recent change to get it working for Sparc broke arm and arm64 platforms. Use sysconf to determine the number of online CPUs only parsing /proc/cpuinfo when sysconf is not available. Signed-off-by: Will Deacon <will.dea...@arm.com> Cc: David Ahern <david.ah...@oracle.com> Cc: Jiri Olsa <jo...@kernel.org> Cc: Mark Rutland <mark.rutl...@arm.com> Cc: Namhyung Kim <namhy...@kernel.org> Link: http://lkml.kernel.org/r/20150423140454.gj1...@arm.com [ Made it fall back to parsing /proc when getconf not found ] Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/Makefile b/tools/perf/Makefile index c699dc35eef9..bc846b83c295 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -24,7 +24,7 @@ unexport MAKEFLAGS # (To override it, run 'make JOBS=1' and similar.) # ifeq ($(JOBS),) - JOBS := $(shell egrep -c '^processor|^CPU' /proc/cpuinfo 2>/dev/null) + JOBS := $(shell (getconf _NPROCESSORS_ONLN || egrep -c '^processor|^CPU' /proc/cpuinfo) 2>/dev/null) ifeq ($(JOBS),0) JOBS := 1 endif -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
