tools/vm/slabinfo: add option to sort by partial slabs
We would like to get a better view of the level of fragmentation within the SLUB allocator. Total number of partial slabs is an indicator of fragmentation. Add a command line option (-P | --partial) to sort the slab list by total number of partial slabs. Link: http://lkml.kernel.org/r/20190426022622.4089-4-tobin@kernel.org Signed-off-by: Tobin C. Harding <tobin@kernel.org> Cc: Alexander Duyck <alexander.duyck@gmail.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com>, Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Michal Hocko <mhocko@kernel.org> Cc: Pekka Enberg <penberg@iki.fi> Cc: Qian Cai <cai@lca.pw> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>alistair/sunxi64-5.4-dsi
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1106b205a3
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53a83f9766
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@ -111,7 +111,7 @@ static void fatal(const char *x, ...)
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static void usage(void)
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static void usage(void)
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{
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{
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printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n"
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printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n"
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"slabinfo [-aABDefhilLnorsStTUvXz1] [N=K] [-dafzput] [slab-regexp]\n"
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"slabinfo [-aABDefhilLnoPrsStTUvXz1] [N=K] [-dafzput] [slab-regexp]\n"
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"-a|--aliases Show aliases\n"
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"-a|--aliases Show aliases\n"
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"-A|--activity Most active slabs first\n"
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"-A|--activity Most active slabs first\n"
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"-B|--Bytes Show size in bytes\n"
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"-B|--Bytes Show size in bytes\n"
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@ -125,6 +125,7 @@ static void usage(void)
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"-n|--numa Show NUMA information\n"
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"-n|--numa Show NUMA information\n"
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"-N|--lines=K Show the first K slabs\n"
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"-N|--lines=K Show the first K slabs\n"
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"-o|--ops Show kmem_cache_ops\n"
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"-o|--ops Show kmem_cache_ops\n"
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"-P|--partial Sort by number of partial slabs\n"
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"-r|--report Detailed report on single slabs\n"
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"-r|--report Detailed report on single slabs\n"
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"-s|--shrink Shrink slabs\n"
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"-s|--shrink Shrink slabs\n"
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"-S|--Size Sort by size\n"
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"-S|--Size Sort by size\n"
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@ -1361,6 +1362,7 @@ struct option opts[] = {
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{ "numa", no_argument, NULL, 'n' },
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{ "numa", no_argument, NULL, 'n' },
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{ "lines", required_argument, NULL, 'N'},
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{ "lines", required_argument, NULL, 'N'},
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{ "ops", no_argument, NULL, 'o' },
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{ "ops", no_argument, NULL, 'o' },
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{ "partial", no_argument, NULL, 'p'},
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{ "report", no_argument, NULL, 'r' },
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{ "report", no_argument, NULL, 'r' },
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{ "shrink", no_argument, NULL, 's' },
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{ "shrink", no_argument, NULL, 's' },
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{ "Size", no_argument, NULL, 'S'},
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{ "Size", no_argument, NULL, 'S'},
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@ -1382,7 +1384,7 @@ int main(int argc, char *argv[])
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page_size = getpagesize();
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page_size = getpagesize();
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while ((c = getopt_long(argc, argv, "aABd::DefhilLnN:orsStTUvXz1",
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while ((c = getopt_long(argc, argv, "aABd::DefhilLnN:oPrsStTUvXz1",
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opts, NULL)) != -1)
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opts, NULL)) != -1)
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switch (c) {
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switch (c) {
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case 'a':
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case 'a':
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@ -1436,6 +1438,9 @@ int main(int argc, char *argv[])
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case 'r':
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case 'r':
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show_report = 1;
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show_report = 1;
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break;
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break;
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case 'P':
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sort_partial = 1;
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break;
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case 's':
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case 's':
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shrink = 1;
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shrink = 1;
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break;
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break;
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