mtk-20170518/package/devel/perf/Makefile, branch master MTK 20170518 : Mediatek SDK based on OpenWRT Barrier Breaker perf: remove linux 4.4 workarounds 2018-07-07T12:53:26+00:00 Felix Fietkau nbd@nbd.name 2018-07-05T13:11:07+00:00 bf136c637c02c154c14bbf48ac2c07467d948ac7 Signed-off-by: Felix Fietkau <nbd@nbd.name> 
Signed-off-by: Felix Fietkau <nbd@nbd.name>
perf: restrict libunwind dependency to archs that actually support libunwind 2018-02-25T16:03:42+00:00 Matthias Schiffer mschiffer@universe-factory.net 2018-02-23T15:17:57+00:00 9bf440fcd9481ee8d20c4b9bccbe6d5cac6bd6e9 Allow building perf on uncommon targets again. Depending on the kernel version, not all of these archs will actually use libunwind in perf. Still, it seems simpler and less error-prone to use the same list that is defined in the libunwind package. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> 
Allow building perf on uncommon targets again.

Depending on the kernel version, not all of these archs will actually use
libunwind in perf. Still, it seems simpler and less error-prone to use the
same list that is defined in the libunwind package.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
perf: use libunwind 2018-01-27T15:46:45+00:00 Maxim Gorbachyov maxim.gorbachyov@gmail.com 2018-01-12T17:54:41+00:00 006a8a063cbcc4395d9bb72f1bb85a9411e384ea Without libunwind perf does not show userspace stack frames. Tested on mvebu. Signed-off-by: Maxim Gorbachyov <maxim.gorbachyov@gmail.com> 
Without libunwind perf does not show userspace stack frames.
Tested on mvebu.

Signed-off-by: Maxim Gorbachyov <maxim.gorbachyov@gmail.com>
perf: Depend on KERNEL_PERF_EVENTS 2017-06-05T19:30:05+00:00 Florian Fainelli f.fainelli@gmail.com 2017-05-22T23:50:47+00:00 f50079985c97404d62a208f2937ad6afd3f07f0f The kernel needs to have PERF_EVENTS built otherwise we will run into the following: root@(none):/# perf top perf_event_open(..., PERF_FLAG_FD_CLOEXEC) failed with unexpected error 89 (Function not implemented) perf_event_open(..., 0) failed unexpectedly with error 89 (Function not implemented) Error: The sys_perf_event_open() syscall returned with 89 (Function not implemented) for event (cycles). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? Make sure this functional dependency is captured. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> 
The kernel needs to have PERF_EVENTS built otherwise we will run into
the following:

root@(none):/# perf top
perf_event_open(..., PERF_FLAG_FD_CLOEXEC) failed with unexpected error
89 (Function not implemented)
perf_event_open(..., 0) failed unexpectedly with error 89 (Function not
implemented)
Error:
The sys_perf_event_open() syscall returned with 89 (Function not
implemented) for event (cycles).
/bin/dmesg may provide additional information.
No CONFIG_PERF_EVENTS=y kernel support configured?

Make sure this functional dependency is captured.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
perf: Disable perf for ARC770 only, enable for ARC HS38 2017-05-10T22:53:05+00:00 Alexey Brodkin Alexey.Brodkin@synopsys.com 2017-05-03T08:46:19+00:00 5dc76a4258f6f73a07b12deda73b3e5b085a7e54 Toolchain built for ARCv1 (read for ARC700 cores) by default has disabled atomic ops (-mno-atomic). When we build Linux kernel for ARC770 which has LL/SC instructions and thus may handle normally atomic ops we explicitly add "-matomic" in CFLAGS. But since user-space perf utility has no way to extract CPU config options from Kconfig/defconfig it uses compiler default settings. In case of ARCv2 (read ARC HS38) atomics are enabled by default and so perf builds perfectly fine thus reenabling perf for ARC HS38 (actually for non-ARC700 targets). Signed-off-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com> 
Toolchain built for ARCv1 (read for ARC700 cores) by default has
disabled atomic ops (-mno-atomic). When we build Linux kernel for ARC770
which has LL/SC instructions and thus may handle normally atomic ops we
explicitly add "-matomic" in CFLAGS. But since user-space perf utility has
no way to extract CPU config options from Kconfig/defconfig it uses
compiler default settings.

In case of ARCv2 (read ARC HS38) atomics are enabled by default and so
perf builds perfectly fine thus reenabling perf for ARC HS38 (actually
for non-ARC700 targets).

Signed-off-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
perf: disable build for ARC, it is currently broken 2017-05-02T13:17:29+00:00 Felix Fietkau nbd@nbd.name 2017-05-02T13:03:59+00:00 c13f943d2a917fb1b4abe1cdde7f090285efd7a9 Signed-off-by: Felix Fietkau <nbd@nbd.name> 
Signed-off-by: Felix Fietkau <nbd@nbd.name>
perf: fix build with kernel 4.9 2017-03-17T07:58:50+00:00 Mathias Kresin dev@kresin.me 2017-03-17T07:29:42+00:00 66146a223e78b03388ebb308a0e93503b3216384 The musl workaround isn't required anymore and causes build errors with kernel 4.9 when applied. Signed-off-by: Mathias Kresin <dev@kresin.me> 
The musl workaround isn't required anymore and causes build errors with
kernel 4.9 when applied.

Signed-off-by: Mathias Kresin <dev@kresin.me>
perf: avoid picking up a dependency on libunwind 2017-02-11T17:07:37+00:00 Felix Fietkau nbd@nbd.name 2017-02-11T16:46:46+00:00 412e0bbf25cf30b4e11706f5ffea3b0925e6fa61 Signed-off-by: Felix Fietkau <nbd@nbd.name> 
Signed-off-by: Felix Fietkau <nbd@nbd.name>
perf: prevent build from within the sdk and mark as nonshared 2016-07-31T10:25:25+00:00 Felix Fietkau nbd@nbd.name 2016-07-31T10:15:07+00:00 5e41c1d447ec4e064b3151d9b88f5a4aaeecbfd2 Signed-off-by: Felix Fietkau <nbd@nbd.name> 
Signed-off-by: Felix Fietkau <nbd@nbd.name>
treewide: replace nbd@openwrt.org with nbd@nbd.name 2016-06-07T06:58:42+00:00 Felix Fietkau nbd@nbd.name 2016-06-07T06:58:31+00:00 7eeb254cc49c4e9f837c980826ec112b9404f341 Signed-off-by: Felix Fietkau <nbd@nbd.name> 
Signed-off-by: Felix Fietkau <nbd@nbd.name>