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Subject[PATCH 2/3] perf intel-pt: Remove no_force_psb from documentation
From: Adrian Hunter <>

no_force_psb was dropped as a late change to the kernel driver.
Consequently, remove it from the documentation.

Signed-off-by: Adrian Hunter <>
Cc: Jiri Olsa <>
Signed-off-by: Arnaldo Carvalho de Melo <>
tools/perf/Documentation/intel-pt.txt | 15 ---------------
1 file changed, 15 deletions(-)

diff --git a/tools/perf/Documentation/intel-pt.txt b/tools/perf/Documentation/intel-pt.txt
index 4a0501d7a3b4..c94c9de3173e 100644
--- a/tools/perf/Documentation/intel-pt.txt
+++ b/tools/perf/Documentation/intel-pt.txt
@@ -364,21 +364,6 @@ cyc_thresh Specifies how frequently CYC packets are produced - see cyc

CYC packets are not requested by default.

-no_force_psb This is a driver option and is not in the IA32_RTIT_CTL MSR.
- It stops the driver resetting the byte count to zero whenever
- enabling the trace (for example on context switches) which in
- turn results in no PSB being forced. However some processors
- will produce a PSB anyway.
- In any case, there is still a PSB when the trace is enabled for
- the first time.
- no_force_psb can be used to slightly decrease the trace size but
- may make it harder for the decoder to recover from errors.
- no_force_psb is not selected by default.

new snapshot option

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