FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-29 21:05:13 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

powerpc/perf: Set PPC_FEATURE2_EBB when we register the power8 PMU

Browse Source 
The presence or absence of EBB is advertised to userspace via the presence
or absence of PPC_FEATURE2_EBB in cpu_user_features2.

Because the kernel can be built without PMU support, we should only add
PPC_FEATURE2_EBB to cpu_user_features2 when we successfully register the
power8 PMU support.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman 2013-07-13 12:53:40 +10:00 committed by Benjamin Herrenschmidt
parent 97645154a9
commit 5d7ead0039
1 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/powerpc/perf/power8-pmu.c
View File

@ -621,10 +621,19 @@ static struct power_pmu power8_pmu = {
static int __init init_power8_pmu(void)
{
int rc;
if (!cur_cpu_spec->oprofile_cpu_type ||
strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power8"))
return -ENODEV;
return register_power_pmu(&power8_pmu);
rc = register_power_pmu(&power8_pmu);
if (rc)
return rc;
/* Tell userspace that EBB is supported */
cur_cpu_spec->cpu_user_features2 |= PPC_FEATURE2_EBB;
return 0;
}
early_initcall(init_power8_pmu);