aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/auxdisplay
diff options
context:
space:
mode:
authorNathan Fontenot <nfont@austin.ibm.com>2010-08-18 09:58:46 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-09-02 10:07:38 +1000
commit93f68f1ef787d97ab688f78a01f446e85bb9a496 (patch)
tree48686ab3564991aba66e47f1a6048ff8a4cbe4c2 /Documentation/auxdisplay
parenta28dec2f26013aad89446b1f708f948617bc28a2 (diff)
downloadkernel_samsung_smdk4412-93f68f1ef787d97ab688f78a01f446e85bb9a496.zip
kernel_samsung_smdk4412-93f68f1ef787d97ab688f78a01f446e85bb9a496.tar.gz
kernel_samsung_smdk4412-93f68f1ef787d97ab688f78a01f446e85bb9a496.tar.bz2
powerpc/pseries: Correct rtas_data_buf locking in dlpar code
The dlpar code can cause a deadlock to occur when making the RTAS configure-connector call. This occurs because we make kmalloc calls, which can block, while parsing the rtas_data_buf and holding the rtas_data_buf_lock. This an cause issues if someone else attempts to grab the rtas_data_bug_lock. This patch alleviates this issue by copying the contents of the rtas_data_buf to a local buffer before parsing. This allows us to only hold the rtas_data_buf_lock around the RTAS configure-connector calls. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'Documentation/auxdisplay')
0 files changed, 0 insertions, 0 deletions