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https://github.com/followmsi/android_kernel_google_msm.git
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7fa22bd546
If an ARM system has multiple cpus in the same socket and the kernel is booted with maxcpus=1, secondary cpus are possible but not present due to how platform_smp_prepare_cpus() is called. Since most typical ARM processors don't actually support physical hotplug, initialize the present map to be equal to the possible map in generic ARM SMP code. Also, always call platform_smp_prepare_cpus() as long as max_cpus is non-zero (0 means no SMP) to allow platform code to do any SMP setup. After applying this patch it's possible to boot an ARM system with maxcpus=1 on the command line and then hotplug in secondary cpus via sysfs. This is more in line with how x86 does things. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: David Brown <davidb@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> |
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| .. | ||
| boot | ||
| common | ||
| configs | ||
| include/asm | ||
| kernel | ||
| lib | ||
| mach-at91 | ||
| mach-bcmring | ||
| mach-clps711x | ||
| mach-cns3xxx | ||
| mach-davinci | ||
| mach-dove | ||
| mach-ebsa110 | ||
| mach-ep93xx | ||
| mach-exynos4 | ||
| mach-footbridge | ||
| mach-gemini | ||
| mach-h720x | ||
| mach-imx | ||
| mach-integrator | ||
| mach-iop13xx | ||
| mach-iop32x | ||
| mach-iop33x | ||
| mach-ixp4xx | ||
| mach-ixp23xx | ||
| mach-ixp2000 | ||
| mach-kirkwood | ||
| mach-ks8695 | ||
| mach-l7200/include/mach | ||
| mach-loki | ||
| mach-lpc32xx | ||
| mach-mmp | ||
| mach-msm | ||
| mach-mv78xx0 | ||
| mach-mx5 | ||
| mach-mxs | ||
| mach-netx | ||
| mach-nomadik | ||
| mach-nuc93x | ||
| mach-omap1 | ||
| mach-omap2 | ||
| mach-orion5x | ||
| mach-pnx4008 | ||
| mach-pxa | ||
| mach-realview | ||
| mach-rpc | ||
| mach-s3c24a0/include/mach | ||
| mach-s3c64xx | ||
| mach-s3c2400 | ||
| mach-s3c2410 | ||
| mach-s3c2412 | ||
| mach-s3c2416 | ||
| mach-s3c2440 | ||
| mach-s3c2443 | ||
| mach-s5p64x0 | ||
| mach-s5pc100 | ||
| mach-s5pv210 | ||
| mach-sa1100 | ||
| mach-shark | ||
| mach-shmobile | ||
| mach-spear3xx | ||
| mach-spear6xx | ||
| mach-tcc8k | ||
| mach-tegra | ||
| mach-u300 | ||
| mach-ux500 | ||
| mach-versatile | ||
| mach-vexpress | ||
| mach-vt8500 | ||
| mach-w90x900 | ||
| mm | ||
| nwfpe | ||
| oprofile | ||
| plat-iop | ||
| plat-mxc | ||
| plat-nomadik | ||
| plat-omap | ||
| plat-orion | ||
| plat-pxa | ||
| plat-s3c24xx | ||
| plat-s5p | ||
| plat-samsung | ||
| plat-spear | ||
| plat-tcc | ||
| plat-versatile | ||
| tools | ||
| vfp | ||
| Kconfig | ||
| Kconfig-nommu | ||
| Kconfig.debug | ||
| Makefile | ||