From: Dave Hansen <[email protected]> This begins the work of moving the percpu pageset sysctl code out of page_alloc.c. update_all_zone_pageset_limits() is the now the only interface that the sysctl code *really* needs out of page_alloc.c.
This helps make it very clear what the interactions are between the actual sysctl code and the core page alloc code. Signed-off-by: Dave Hansen <[email protected]> --- linux.git-davehans/mm/page_alloc.c | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) diff -puN mm/page_alloc.c~separate-pageset-code-from-sysctl mm/page_alloc.c --- linux.git/mm/page_alloc.c~separate-pageset-code-from-sysctl 2013-10-15 09:57:06.415636275 -0700 +++ linux.git-davehans/mm/page_alloc.c 2013-10-15 09:57:06.421636541 -0700 @@ -5768,6 +5768,19 @@ int lowmem_reserve_ratio_sysctl_handler( return 0; } +void update_all_zone_pageset_limits(void) +{ + struct zone *zone; + unsigned int cpu; + + mutex_lock(&pcp_batch_high_lock); + for_each_populated_zone(zone) + for_each_possible_cpu(cpu) + pageset_set_high_and_batch(zone, + per_cpu_ptr(zone->pageset, cpu)); + mutex_unlock(&pcp_batch_high_lock); +} + /* * percpu_pagelist_fraction - changes the pcp->high for each zone on each * cpu. It is the fraction of total pages in each zone that a hot per cpu @@ -5776,20 +5789,12 @@ int lowmem_reserve_ratio_sysctl_handler( int percpu_pagelist_fraction_sysctl_handler(ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { - struct zone *zone; - unsigned int cpu; - int ret; - - ret = proc_dointvec_minmax(table, write, buffer, length, ppos); + int ret = proc_dointvec_minmax(table, write, buffer, length, ppos); if (!write || (ret < 0)) return ret; - mutex_lock(&pcp_batch_high_lock); - for_each_populated_zone(zone) - for_each_possible_cpu(cpu) - pageset_set_high_and_batch(zone, - per_cpu_ptr(zone->pageset, cpu)); - mutex_unlock(&pcp_batch_high_lock); + update_all_zone_pageset_limits(); + return 0; } _ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
