Searched hist:31343 (Results 1 - 2 of 2) sorted by relevance
| /linux-master/arch/x86/kernel/ | ||
| H A D | setup.c | diff 31343d8a Fri Aug 08 01:15:57 MDT 2008 Alok Kataria <akataria@vmware.com> x86: Fix broken VMI in 2.6.27-rc.. The lowmem mapping table created by VMI need not depend on max_low_pfn at all. Instead we now create an extra large mapping which covers all possible lowmem instead of the physical ram that is actually available. This allows the vmi initialization to be done before max_low_pfn could be computed. We also move the vmi_init code very early in the boot process so that nobody accidentally breaks the fixmap dependancy. Signed-off-by: Alok N Kataria <akataria@vmware.com> Acked-by: Zachary Amsden <zach@vmware.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> |
| /linux-master/kernel/sched/ | ||
| H A D | fair.c | diff 56cf515b Tue Aug 06 02:36:43 MDT 2013 Joonsoo Kim <iamjoonsoo.kim@lge.com> sched: Clean-up struct sd_lb_stat There is no reason to maintain separate variables for this_group and busiest_group in sd_lb_stat, except saving some space. But this structure is always allocated in stack, so this saving isn't really benificial [peterz: reducing stack space is good; in this case readability increases enough that I think its still beneficial] This patch unify these variables, so IMO, readability may be improved. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> [ Rename this to local -- avoids confusion between this_cpu and the C++ this pointer. ] Reviewed-by: Paul Turner <pjt@google.com> [ Lots of style edits, a few fixes and a rename. ] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1375778203-31343-4-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Ingo Molnar <mingo@kernel.org> diff 23f0d209 Tue Aug 06 02:36:42 MDT 2013 Joonsoo Kim <iamjoonsoo.kim@lge.com> sched: Factor out code to should_we_balance() Now checking whether this cpu is appropriate to balance or not is embedded into update_sg_lb_stats() and this checking has no direct relationship to this function. There is not enough reason to place this checking at update_sg_lb_stats(), except saving one iteration for sched_group_cpus. In this patch, I factor out this checking to should_we_balance() function. And before doing actual work for load_balancing, check whether this cpu is appropriate to balance via should_we_balance(). If this cpu is not a candidate for balancing, it quit the work immediately. With this change, we can save two memset cost and can expect better compiler optimization. Below is result of this patch. * Vanilla * text data bss dec hex filename 34499 1136 116 35751 8ba7 kernel/sched/fair.o * Patched * text data bss dec hex filename 34243 1136 116 35495 8aa7 kernel/sched/fair.o In addition, rename @balance to @continue_balancing in order to represent its purpose more clearly. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> [ s/should_balance/continue_balancing/g ] Reviewed-by: Paul Turner <pjt@google.com> [ Made style changes and a fix in should_we_balance(). ] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1375778203-31343-3-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Ingo Molnar <mingo@kernel.org> diff 95a79b80 Tue Aug 06 02:36:41 MDT 2013 Joonsoo Kim <iamjoonsoo.kim@lge.com> sched: Remove one division operation in find_busiest_queue() Remove one division operation in find_busiest_queue() by using crosswise multiplication: wl_i / power_i > wl_j / power_j := wl_i * power_j > wl_j * power_i Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> [ Expanded the changelog. ] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1375778203-31343-2-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Ingo Molnar <mingo@kernel.org> diff 56cf515b Tue Aug 06 02:36:43 MDT 2013 Joonsoo Kim <iamjoonsoo.kim@lge.com> sched: Clean-up struct sd_lb_stat There is no reason to maintain separate variables for this_group and busiest_group in sd_lb_stat, except saving some space. But this structure is always allocated in stack, so this saving isn't really benificial [peterz: reducing stack space is good; in this case readability increases enough that I think its still beneficial] This patch unify these variables, so IMO, readability may be improved. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> [ Rename this to local -- avoids confusion between this_cpu and the C++ this pointer. ] Reviewed-by: Paul Turner <pjt@google.com> [ Lots of style edits, a few fixes and a rename. ] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1375778203-31343-4-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Ingo Molnar <mingo@kernel.org> diff 23f0d209 Tue Aug 06 02:36:42 MDT 2013 Joonsoo Kim <iamjoonsoo.kim@lge.com> sched: Factor out code to should_we_balance() Now checking whether this cpu is appropriate to balance or not is embedded into update_sg_lb_stats() and this checking has no direct relationship to this function. There is not enough reason to place this checking at update_sg_lb_stats(), except saving one iteration for sched_group_cpus. In this patch, I factor out this checking to should_we_balance() function. And before doing actual work for load_balancing, check whether this cpu is appropriate to balance via should_we_balance(). If this cpu is not a candidate for balancing, it quit the work immediately. With this change, we can save two memset cost and can expect better compiler optimization. Below is result of this patch. * Vanilla * text data bss dec hex filename 34499 1136 116 35751 8ba7 kernel/sched/fair.o * Patched * text data bss dec hex filename 34243 1136 116 35495 8aa7 kernel/sched/fair.o In addition, rename @balance to @continue_balancing in order to represent its purpose more clearly. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> [ s/should_balance/continue_balancing/g ] Reviewed-by: Paul Turner <pjt@google.com> [ Made style changes and a fix in should_we_balance(). ] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1375778203-31343-3-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Ingo Molnar <mingo@kernel.org> diff 95a79b80 Tue Aug 06 02:36:41 MDT 2013 Joonsoo Kim <iamjoonsoo.kim@lge.com> sched: Remove one division operation in find_busiest_queue() Remove one division operation in find_busiest_queue() by using crosswise multiplication: wl_i / power_i > wl_j / power_j := wl_i * power_j > wl_j * power_i Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> [ Expanded the changelog. ] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1375778203-31343-2-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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