Athira Rajeev 299687e18a perf bench: Fix epoll bench to correct usage of affinity for machines with #CPUs > 1K ... The 'perf bench epoll' testcase fails on systems with more than 1K CPUs. Testcase: perf bench epoll all Result snippet: <<>> Run summary [PID 106497]: 1399 threads monitoring on 64 file-descriptors for 8 secs. perf: pthread_create: No such file or directory <<>> In epoll benchmarks (ctl, wait) pthread_create is invoked in do_threads from respective bench_epoll_* function. Though the logs shows direct failure from pthread_create, the actual failure is from "sched_setaffinity" returning EINVAL (invalid argument). This happens because the default mask size in glibc is 1024. To overcome this 1024 CPUs mask size limitation of cpu_set_t, change the mask size using the CPU_*_S macros. Patch addresses this by fixing all the epoll benchmarks to use CPU_ALLOC to allocate cpumask, CPU_ALLOC_SIZE for size, and CPU_SET_S to set the mask. Reported-by: Disha Goel <disgoel@linux.vnet.ibm.com> Signed-off-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Tested-by: Disha Goel <disgoel@linux.vnet.ibm.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nageswara R Sastry <rnsastry@linux.ibm.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20220406175113.87881-3-atrajeev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2022-04-09 12:34:29 -03:00
..
accounting	delayacct: track delays from memory compact	2022-01-20 08:52:55 +02:00
arch	tools headers arm64: Sync arm64's cputype.h with the kernel sources	2022-04-09 12:34:29 -03:00
bootconfig
bpf	Networking fixes for 5.18-rc2, including fixes from bpf and netfilter	2022-04-07 19:01:47 -10:00
build	tools build: Filter out options and warnings not supported by clang	2022-04-09 12:34:16 -03:00
cgroup	tools/cgroup/slabinfo: update to work with struct slab	2022-02-21 11:34:49 +01:00
counter	kbuild: replace $(if A,A,B) with $(or A,B)	2022-02-15 12:25:56 +09:00
debugging
edid
firewire
firmware
gpio	kbuild: replace $(if A,A,B) with $(or A,B)	2022-02-15 12:25:56 +09:00
hv	kbuild: replace $(if A,A,B) with $(or A,B)	2022-02-15 12:25:56 +09:00
iio	Kbuild updates for v5.18	2022-03-31 11:59:03 -07:00
include	tools include UAPI: Sync linux/vhost.h with the kernel sources	2022-04-09 11:42:33 -03:00
io_uring
kvm/kvm_stat
laptop
leds
lib	perf cpumap: More cpu map reuse by merge.	2022-04-01 16:19:35 -03:00
memory-model	tools/memory-model: Explain syntactic and semantic dependencies	2022-02-01 17:32:30 -08:00
objtool	Kbuild updates for v5.18	2022-03-31 11:59:03 -07:00
pci	kbuild: replace $(if A,A,B) with $(or A,B)	2022-02-15 12:25:56 +09:00
pcmcia
perf	perf bench: Fix epoll bench to correct usage of affinity for machines with #CPUs > 1K	2022-04-09 12:34:29 -03:00
power	Kbuild updates for v5.18	2022-03-31 11:59:03 -07:00
rcu
scripts	Kbuild updates for v5.18	2022-03-31 11:59:03 -07:00
spi	kbuild: replace $(if A,A,B) with $(or A,B)	2022-02-15 12:25:56 +09:00
testing	linux-kselftest-fixes-5.18-rc2	2022-04-08 14:48:35 -10:00
thermal/tmon	thermal: tools: tmon: remove unneeded local variable	2021-11-24 17:26:13 +01:00
time
tracing	Kbuild updates for v5.18	2022-03-31 11:59:03 -07:00
usb	kbuild: replace $(if A,A,B) with $(or A,B)	2022-02-15 12:25:56 +09:00
virtio	tools/virtio: compile with -pthread	2022-03-28 16:52:59 -04:00
vm	tools/vm/page_owner_sort.c: remove -c option	2022-04-01 11:46:09 -07:00
wmi
Makefile	tools/lib/lockdep: drop liblockdep	2021-11-12 11:07:17 -08:00