mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 16:07:11 +07:00
7639dad93a
1) I forgot that I had another selftest to stress test the ftrace instance creation. It was actually suppose to go into the 4.6 merge window, but I never committed it. I almost forgot about it again, but noticed it was missing from your tree. 2) Soumya PN sent me a clean up patch to not disable interrupts when taking the tasklist_lock for read, as it's unnecessary because that lock is never taken for write in irq context. 3) Newer gcc's can cause the jump in the function_graph code to the global ftrace_stub label to be a short jump instead of a long one. As that jump is dynamically converted to jump to the trace code to do function graph tracing, and that conversion expects a long jump it can corrupt the ftrace_stub itself (it's directly after that call). One way to prevent gcc from using a short jump is to declare the ftrace_stub as a weak function, which we do here to keep gcc from optimizing too much. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJXQhYQAAoJEKKk/i67LK/82pAH/3XzRCP366HqWnKdvluPB8vX UnVoXGAX1Eh2ZpvlPIJBXNYOZlnGRMMMAoeI+su31FoJHrzTzfGXvRynTkZPFZtd XakvHfACjtGtvi2MuCN1t9/d1ty/ob2o05KB9qc+JRlzHM09qTL/HX8hwZeEsMQ4 NYgEY4Y727LOSCrJieLktchpwtie77q8Wq25oiWIVWOyDjpCsPnZyaOqaQSANot9 Gd00cixbMam7Ba1BjoRsRQZaT2pYZ8vt7HDXDBfAOW1oOjalWARLhRg/zww1V3WD DEptuEeyAgMJS3v76Z6Sbk/QM7hyGUWCcmC2qaN1yc2n1Sh+zBOiN1eyiiUh/2U= =ERxv -----END PGP SIGNATURE----- Merge tag 'trace-v4.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull motr tracing updates from Steven Rostedt: "Three more changes. - I forgot that I had another selftest to stress test the ftrace instance creation. It was actually suppose to go into the 4.6 merge window, but I never committed it. I almost forgot about it again, but noticed it was missing from your tree. - Soumya PN sent me a clean up patch to not disable interrupts when taking the tasklist_lock for read, as it's unnecessary because that lock is never taken for write in irq context. - Newer gcc's can cause the jump in the function_graph code to the global ftrace_stub label to be a short jump instead of a long one. As that jump is dynamically converted to jump to the trace code to do function graph tracing, and that conversion expects a long jump it can corrupt the ftrace_stub itself (it's directly after that call). One way to prevent gcc from using a short jump is to declare the ftrace_stub as a weak function, which we do here to keep gcc from optimizing too much" * tag 'trace-v4.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace/x86: Set ftrace_stub to weak to prevent gcc from using short jumps to it ftrace: Don't disable irqs when taking the tasklist_lock read_lock ftracetest: Add instance created, delete, read and enable event test |
||
---|---|---|
.. | ||
arch | ||
build | ||
cgroup | ||
firewire | ||
gpio | ||
hv | ||
iio | ||
include | ||
laptop/freefall | ||
lguest | ||
lib | ||
net | ||
nfsd | ||
objtool | ||
perf | ||
power | ||
scripts | ||
spi | ||
testing | ||
thermal/tmon | ||
time | ||
usb | ||
virtio | ||
vm | ||
Makefile |