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| author | Gavin Shan <gshan@redhat.com> | 2019-12-10 15:48:29 +1100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-01-23 09:51:06 +0100 |
| commit | 5fcf3a55a62afb0760ccb6f391d62f20bce4a42f (patch) | |
| tree | 9bbbe56779358a6aa5bdc6db988ffcd2453a7d3a /tools/kvm/kvm_stat | |
| parent | 56871d444bc4d7ea66708775e62e2e0926384dbc (diff) | |
| download | linux-stable-5fcf3a55a62afb0760ccb6f391d62f20bce4a42f.tar.gz linux-stable-5fcf3a55a62afb0760ccb6f391d62f20bce4a42f.tar.bz2 linux-stable-5fcf3a55a62afb0760ccb6f391d62f20bce4a42f.zip | |
tools/kvm_stat: Fix kvm_exit filter name
The filter name is fixed to "exit_reason" for some kvm_exit events, no
matter what architect we have. Actually, the filter name ("exit_reason")
is only applicable to x86, meaning it's broken on other architects
including aarch64.
This fixes the issue by providing various kvm_exit filter names, depending
on architect we're on. Afterwards, the variable filter name is picked and
applied through ioctl(fd, SET_FILTER).
Reported-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Gavin Shan <gshan@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/kvm/kvm_stat')
| -rwxr-xr-x | tools/kvm/kvm_stat/kvm_stat | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat index ad1b9e646c49..4cf93110c259 100755 --- a/tools/kvm/kvm_stat/kvm_stat +++ b/tools/kvm/kvm_stat/kvm_stat @@ -270,6 +270,7 @@ class ArchX86(Arch): def __init__(self, exit_reasons): self.sc_perf_evt_open = 298 self.ioctl_numbers = IOCTL_NUMBERS + self.exit_reason_field = 'exit_reason' self.exit_reasons = exit_reasons def debugfs_is_child(self, field): @@ -289,6 +290,7 @@ class ArchPPC(Arch): # numbers depend on the wordsize. char_ptr_size = ctypes.sizeof(ctypes.c_char_p) self.ioctl_numbers['SET_FILTER'] = 0x80002406 | char_ptr_size << 16 + self.exit_reason_field = 'exit_nr' self.exit_reasons = {} def debugfs_is_child(self, field): @@ -300,6 +302,7 @@ class ArchA64(Arch): def __init__(self): self.sc_perf_evt_open = 241 self.ioctl_numbers = IOCTL_NUMBERS + self.exit_reason_field = 'esr_ec' self.exit_reasons = AARCH64_EXIT_REASONS def debugfs_is_child(self, field): @@ -311,6 +314,7 @@ class ArchS390(Arch): def __init__(self): self.sc_perf_evt_open = 331 self.ioctl_numbers = IOCTL_NUMBERS + self.exit_reason_field = None self.exit_reasons = None def debugfs_is_child(self, field): @@ -541,8 +545,8 @@ class TracepointProvider(Provider): """ filters = {} filters['kvm_userspace_exit'] = ('reason', USERSPACE_EXIT_REASONS) - if ARCH.exit_reasons: - filters['kvm_exit'] = ('exit_reason', ARCH.exit_reasons) + if ARCH.exit_reason_field and ARCH.exit_reasons: + filters['kvm_exit'] = (ARCH.exit_reason_field, ARCH.exit_reasons) return filters def _get_available_fields(self): |