Yonghong Song 0ec9552b43 samples/bpf: add error checking for perf ioctl calls in bpf loader ... load_bpf_file() should fail if ioctl with command PERF_EVENT_IOC_ENABLE and PERF_EVENT_IOC_SET_BPF fails. When they do fail, proper error messages are printed. With this change, the below "syscall_tp" run shows that the maximum number of bpf progs attaching to the same perf tracepoint is indeed enforced. $ ./syscall_tp -i 64 prog #0: map ids 4 5 ... prog #63: map ids 382 383 $ ./syscall_tp -i 65 prog #0: map ids 4 5 ... prog #64: map ids 388 389 ioctl PERF_EVENT_IOC_SET_BPF failed err Argument list too long Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>		2017-12-01 02:59:21 +01:00
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auxdisplay	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blackfin	samples: move blackfin gptimers-example from Documentation	2016-10-10 07:12:02 -06:00
bpf	samples/bpf: add error checking for perf ioctl calls in bpf loader	2017-12-01 02:59:21 +01:00
configfs	configfs: make config_item_type const	2017-10-19 16:15:15 +02:00
connector	A relatively calm cycle for the docs tree again.	2017-11-13 08:25:06 -08:00
hidraw	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
hw_breakpoint
kdb
kfifo	kfifo: clean up example to not use page_link	2017-07-12 16:26:01 -07:00
kobject	samples/kobject: be explicit in the module license	2015-03-25 13:41:42 +01:00
kprobes	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-13 13:05:08 -08:00
livepatch	livepatch: add (un)patch callbacks	2017-10-19 10:08:56 +02:00
mei	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mic/mpssd	Merge branch 'linus' into locking/core, to resolve conflicts	2017-11-07 10:32:44 +01:00
pktgen	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-04 09:26:51 +09:00
rpmsg	rpmsg: Allow callback to return errors	2016-09-08 22:15:25 -07:00
seccomp	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sockmap	bpf: avoid preempt enable/disable in sockmap using tcp_skb_cb region	2017-10-20 13:01:29 +01:00
statx	statx: Include a mask for stx_attributes in struct statx	2017-04-03 01:06:00 -04:00
timers	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_events	Merge branch 'for-linus' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-11-15 10:14:11 -08:00
trace_printk	tracing: Add trace_printk sample code	2016-06-20 09:54:21 -04:00
uhid	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
v4l	[media] media: v4l2-pci-skeleton: Fix error handling path in 'skeleton_probe()'	2017-10-04 16:55:02 -03:00
vfio-mdev	vfio-mdev/samples: make mdev_fops const and static	2017-10-02 12:40:05 -06:00
watchdog	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kconfig	livepatch: introduce shadow variable API	2017-09-14 23:06:12 +02:00
Makefile	statx: Add a system call to make enhanced file info available	2017-03-02 20:51:15 -05:00