linux-kernel - RE: [PATCH 39/52] tools/perf/build: Automatically build in parallel, based on number of CPUs in the syst

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Message-ID: <5253F4D4.7070402@draigBrady.com>
Date:	Tue, 08 Oct 2013 13:04:36 +0100
From:	Pádraig Brady <P@...igBrady.com>
To:	Ingo Molnar <mingo@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 39/52] tools/perf/build: Automatically build in parallel,
 based on number of CPUs in the syst

On 10/08/2013 10:02 AM, Ingo Molnar wrote:
> +ifeq ($(JOBS),)
> +  JOBS := $(shell grep -c ^processor /proc/cpuinfo 2>/dev/null)

nproc is probably ubiquitous enough to use now
(available since coreutils 8.1 (end of 2009))

As well as being more concise, it will take
account of offline CPUs etc.

> +  ifeq ($(JOBS),)
> +    JOBS := 1
> +  endif
> +endif
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