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| author | Ashok Raj <ashok.raj@intel.com> | 2005-06-25 14:54:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-25 16:24:29 -0700 |
| commit | 67664c8f7e74def5adf66298a1245d82af72db2c (patch) | |
| tree | c98657d833d3ca61322a8ae54023814ebc36a480 /arch/i386/kernel/smpboot.c | |
| parent | f370513640492641b4046bfd9a6e4714f6ae530d (diff) | |
| download | lwn-67664c8f7e74def5adf66298a1245d82af72db2c.tar.gz lwn-67664c8f7e74def5adf66298a1245d82af72db2c.zip | |
[PATCH] i386: Dont use IPI broadcast when using cpu hotplug.
This patch introduces a startup parameter no_broadcast. When we enable
CONFIG_HOTPLUG_CPU, we dont want to use broadcast shortcut as it has ill
effects on a offline cpu. If we issue broadcast, the IPI is also delivered
to offline cpus, or partially up cpu causing stale IPI's to be handled,
which is a problem and can cause undesirable effects.
Introduces a new startup cmdline option no_ipi_broadcast, that can be
switched at cmdline if necessary.
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Acked-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/smpboot.c')
0 files changed, 0 insertions, 0 deletions