GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-03-28 18:05:00 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Urgent perf ARC fix

Browse source 
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEOXpuCuR6hedrdLCJadfx3eKKwl4FAl+SNO0ACgkQadfx3eKK
 wl4VgA//d79Bt3a78eDpXhK12g8UImgUM99AxKKx3nd/pt9mP0pjB0DILnWGmPq4
 kaqpt4jgkOfezAdPFjNCLs8ghNswQWmeKfh57f5sZcLt4OPBlpzFhauaIauYAdCW
 /9xmN2CVSr8EOfXK+S4VxjSG8FIFdtaiw4B+zYaZ9O684Cnp6it2Izk9EMDwfHbB
 kP70plt5yIohnec0ByHpgbQvoXGUpxR3raTHFAOh3RTl35Dh1IyvFlv9/C5h7qrJ
 KIwsTO7OfnnQZ+TfqN9fNXTh4ybZ4ogfAU59TtKkzMyVDERdMIwWMR+Jb+WVo4HV
 NPobwmzrAkJFephnJjvlvZ+0UIcBQ8fZqk4H+P0z2Cv6dyAlaJEE8L4XEQolm96l
 exNT/tcmCyysLqWmpYJ6NRVJnfK6iU5UT34nLun8mucWCJYA3FdmhCciss2MgmYi
 a6ZDV4XLFihglnbRAFfqYELfhdSQi4llkFRAJ/R4yH2gzX4Bhyt4nE/JJxElyxNb
 E1e4UT6fKnlKqi5yNEt2elF+n/u+RXlH6GhWJ4QDQk73gkiJYksq0uDnso+60KKJ
 y6KoUVlHzSZM8rc4qRCPcX1OwrsYRJvGEk1vJc0RXVBL0i8/EkGK9w4r/Ty3PqOg
 r46LDlruGpL4yTFnZMKNyJqt2gk2eZgUhYdhAEfdnMYq47yqTnY=
 =OtSA
 -----END PGP SIGNATURE-----

Merge tag 'arc-5.10-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fix from Vineet Gupta:
 "I found a snafu in perf driver which made it into 5.9-rc4 and the fix
  should go in now than wait"

* tag 'arc-5.10-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: perf: redo the pct irq missing in device-tree handling
This commit is contained in:
Linus Torvalds 2020-10-23 09:59:25 -07:00
commit 0a14d76498
1 changed files with 18 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
arch/arc/kernel/perf_event.c
View file

@ -562,7 +562,7 @@ static int arc_pmu_device_probe(struct platform_device *pdev)
{ {
struct arc_reg_pct_build pct_bcr; struct arc_reg_pct_build pct_bcr;
struct arc_reg_cc_build cc_bcr; struct arc_reg_cc_build cc_bcr;
int i, has_interrupts, irq; int i, has_interrupts, irq = -1;
int counter_size; /* in bits */ int counter_size; /* in bits */
union cc_name { union cc_name {
@ -637,19 +637,28 @@ static int arc_pmu_device_probe(struct platform_device *pdev)
.attr_groups = arc_pmu->attr_groups, .attr_groups = arc_pmu->attr_groups,
}; };
if (has_interrupts && (irq = platform_get_irq(pdev, 0) >= 0)) { if (has_interrupts) {
irq = platform_get_irq(pdev, 0);
if (irq >= 0) {
int ret;
arc_pmu->irq = irq; arc_pmu->irq = irq;
/* intc map function ensures irq_set_percpu_devid() called */ /* intc map function ensures irq_set_percpu_devid() called */
request_percpu_irq(irq, arc_pmu_intr, "ARC perf counters", ret = request_percpu_irq(irq, arc_pmu_intr, "ARC perf counters",
this_cpu_ptr(&arc_pmu_cpu)); this_cpu_ptr(&arc_pmu_cpu));
if (!ret)
on_each_cpu(arc_cpu_pmu_irq_init, &irq, 1);
else
irq = -1;
}
on_each_cpu(arc_cpu_pmu_irq_init, &irq, 1);
} else {
arc_pmu->pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT;
} }
if (irq == -1)
arc_pmu->pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT;
/* /*
* perf parser doesn't really like '-' symbol in events name, so let's * perf parser doesn't really like '-' symbol in events name, so let's
* use '_' in arc pct name as it goes to kernel PMU event prefix. * use '_' in arc pct name as it goes to kernel PMU event prefix.