diff options
| author | Chris Dearman <chris@mips.com> | 2007-05-24 22:24:20 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-06-14 18:25:15 +0100 |
| commit | ffe9ee4709cf513fb80e9b7e04d214dd8b76a10d (patch) | |
| tree | 07453e5644806b9c755159e5a4c1fe11dacfcab0 /arch/mips/oprofile | |
| parent | b72c05262298cc2ac92edb657f5ea3a97ad5ea3d (diff) | |
| download | lwn-ffe9ee4709cf513fb80e9b7e04d214dd8b76a10d.tar.gz lwn-ffe9ee4709cf513fb80e9b7e04d214dd8b76a10d.zip | |
[MIPS] Separate performance counter interrupts
Support for performance counter overflow interrupt that is on a separate
interrupt from the timer.
Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/oprofile')
| -rw-r--r-- | arch/mips/oprofile/op_model_mipsxx.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c index 4f94fa261aae..1ea5c9c1010b 100644 --- a/arch/mips/oprofile/op_model_mipsxx.c +++ b/arch/mips/oprofile/op_model_mipsxx.c @@ -177,7 +177,10 @@ static int mipsxx_perfcount_handler(void) unsigned int counters = op_model_mipsxx_ops.num_counters; unsigned int control; unsigned int counter; - int handled = 0; + int handled = IRQ_NONE; + + if (cpu_has_mips_r2 && !(read_c0_cause() & (1 << 26))) + return handled; switch (counters) { #define HANDLE_COUNTER(n) \ @@ -188,7 +191,7 @@ static int mipsxx_perfcount_handler(void) (counter & M_COUNTER_OVERFLOW)) { \ oprofile_add_sample(get_irq_regs(), n); \ w_c0_perfcntr ## n(reg.counter[n]); \ - handled = 1; \ + handled = IRQ_HANDLED; \ } HANDLE_COUNTER(3) HANDLE_COUNTER(2) |