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powerpc/xmon: Fix disabling tracing while in xmon
Commited49f7fd64
("powerpc/xmon: Disable tracing when entering xmon") added code to disable recording trace entries while in xmon. The commit introduced a variable 'tracing_enabled' to record if tracing was enabled on xmon entry, and used this to conditionally enable tracing during exit from xmon. However, we are not checking the value of 'fromipi' variable in xmon_core() when setting 'tracing_enabled'. Due to this, when secondary cpus enter xmon, they will see tracing as being disabled already and tracing won't be re-enabled on exit. Fix the same. Fixes:ed49f7fd64
("powerpc/xmon: Disable tracing when entering xmon") Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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commit
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@ -469,8 +469,10 @@ static int xmon_core(struct pt_regs *regs, int fromipi)
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local_irq_save(flags);
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hard_irq_disable();
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tracing_enabled = tracing_is_on();
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tracing_off();
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if (!fromipi) {
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tracing_enabled = tracing_is_on();
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tracing_off();
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}
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bp = in_breakpoint_table(regs->nip, &offset);
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if (bp != NULL) {
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